Method and system for video monitoring using mobile terminal

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to video monitoring means. The method involves a mobile client sending a request, at the request of an external control device, to a multimedia transcoder; the multimedia transcoder receiving said request; requesting an encoded multimedia stream of said external control device from a fixed streaming media network server; transcoding the obtained encoded multimedia stream; the multimedia transcoder outputting a transcoded encoded multimedia stream to the mobile client or mobile streaming media network server, where the multimedia transcoder sets video transcoding parameters corresponding to various mobile network standards.

EFFECT: enabling a user to perform video monitoring of a control point using a mobile terminal.

10 cl, 4 dwg

 

The technical field

The present invention relates to the field of video surveillance, in particular to a method and system for implementing video monitoring by the mobile terminal on the basis of the convergence of fixed networks and mobile networks.

The level of technology

In recent years the technology of Internet Protocol (IP) has become a common network element different telecommunication networks and the convergence of fixed networks and mobile networks has also become a definite element of service new service experience. Video surveillance fixed network received the appropriate development and surveillance fixed network is used extensively. The mobile surveillance refers to the service is completely mobile digital packet data, by means of which the user is directly connected to the public networks/wireless networks, such as PSTN/2.5G/2.75G/3G/4G, etc. through a variety of mobile or wired terminals (such as supporting streaming media mobile phone, personal digital assistants (PDA) and a personal computer (PC), etc. and then can carry out surveillance in real time places or areas that are of interest to the user or to which the user pays attention, it is mainly applicable for areas where the hospital is the first network does not provide coverage, and a certain number of services require mobility of the terminal.

As for modern mobile networks, despite the enactment of the mobile network of new generation technologies, such as 3G/4G, etc., their frequency range is still less than the frequency range of the network. Regarding typical of the encoded video stream, which is relatively easily accomplished in a fixed network, for example 512 kilobits per second or common intermediate format (CIF), to obtain encoded video streams for mobile network also requires reducing the coding rate and rate of resolution. In order for the mobile terminal network could directly control the video-controlled devices fixed network multimedia transcoders device must be added between the fixed network and mobile network for the implementation of changes in the encoded media stream with a high bit rate and high rate of resolution in the encoded media stream with a low encoding speed and low resolution, which may be accepted by the mobile network. However, since there are now quite a few mobile networks such as GPRS/TD-SCDMA/CDMA 1X/WCDMA/WIFI etc. and ranges network frequencies different network standards that are otklyuchatsa to the network, differ, for example, the frequency bands of the multiple network standards are above and others below, there is the technical problem of providing support changes different encoded multimedia streams to mobile terminals of different network standards through media transcoding device, which requires a solution at the present time. Moreover, since real users of mobile networks do not know the exact conditions of the frequency range of the network you use, or might not know many of the technical concepts of metric resolution encoding speed and format, resolution, etc. also arises the problem of automatic adaptation to the frequency ranges of different network standards, amendments and receiving the encoded stream, the corresponding network standard, through media transcoding device that requires a decision in the case, if the user of the mobile network does not provide the appropriate parameters such as the rate of resolution and encoding speed, etc.

The technical problem which is solved in the present invention is to provide a method and system for implementing video monitoring by the mobile terminal, which extend the surveillance in the fixed network to mobile video, thus p is dostavlyaya customers of different standards in the mobile network to watch videos from a checkpoint at any time and in any place.

To solve the above technical problem, the present invention uses the following technical scheme.

The present invention provides a method of conducting surveillance via the mobile terminal, the method includes:

i. sending the mobile client on-demand request by the external monitoring device to multimedia transcoders device;

ii. receiving multimedia transcoder device specified query and then querying the encoded media stream to the specified external monitoring device from the stationary network streaming media server, transcoding the received encoded media stream; and

iii. the output of the multimedia transcoder device transcoded encoded media stream to the mobile client or mobile streaming media server, where

ask media transcoders device settings transcoding video that correspond to the various standards for mobile networks;

thus, carrying out the surveillance of mobile terminals of different standards.

Furthermore, the method further includes: when receiving a request for termination on demand, stopping the media transcoders device receiving encoded in the eye of the media from the stationary network streaming media server, as well as stopping transcoding and output.

In addition, phase i includes the relay specified mobile client to the specified on-demand request to the external controller via mobile streaming media server.

In addition, the parameter transcoding video provides an indicator of the resolution, bit rate, encoding format, and the refresh period of a frame with internal encoding.

Moreover, the query sent to the specified mobile client, contains the identification information (ID) of the specified external monitoring device and the network standard of the specified mobile client.

Furthermore, the method further includes:

preliminary preservation of relevant information specified by the external monitoring device and the specified transcoding video service platform, where the relevant information specified by the external monitoring device contains one or two identification numbers (ID) of the specified external monitoring device, the number of channels specified by the external monitoring device and the address of the fixed network streaming media server, which is specified by the external monitoring device.

In addition, after the step of obtaining the specified mult the media transcoders device specified query, phase ii further includes:

check the specified media transcoders device addresses stationary network streaming media server, which is specified by the external monitoring device, with the service platform, and the querying of the encoded media stream from the stationary network streaming media server based on the specified address;

querying the specified fixed network server streaming media encoded media stream from the specified external monitoring device and sending the encoded media stream is returned through the specified external monitoring device to the specified media transcoders device; and

check the specified media transcoders device parameter transcoding video in accordance with the network standard of the specified mobile client from the service platform in such a way as to convert the received encoded media in accordance with the specified parameter transcoding video.

The present invention also uses the following technical scheme.

The present invention also provides a delivery system for video surveillance via the mobile terminal, the system contains:

the player is dia transcoders device, configured to process the request according to the request from the mobile client, retrieving the encoded media stream from the fixed network server streaming media, and implementation of multimedia transcoding the received encoded media stream for output.

service platform configured to register and manage information specified media transcoding device, the external controlling device, a stationary network streaming media server or a desktop client network;

fixed network streaming media server that is configured to request and receive encoded multimedia stream specified by the external monitoring device, and the direction of the received encoded media stream;

the external control device configured for encoding input video data through the controller and the response to the request to send the encoded media stream from the specified fixed network streaming media server; and

a mobile client configured to initiate the request on-demand video, receiving the encoded media stream is received as response from the media transcoding or mobile streaming server mult the media;

where the specified service platform respectively connected with the specified media transcoders device specified fixed network streaming media server and the specified external monitoring device, and the specified media transcoders device is additionally connected with the specified external monitoring device through the fixed network server streaming media;

thus, carrying out the surveillance of mobile terminals of different standards.

In addition, the system of the present invention further comprises:

mobile portal that is configured to receive information of various external controlling devices from the specified service platform to test and logon to the specified mobile client; and

mobile streaming media server configured to distribute and store the encoded media stream is transcoded and output by the specified media transcoding device.

In addition, the mobile client is supporting streaming mobile phone, or a network terminal of the third generation (3G), or personal digital assistants (PDA).

Compared with the prior art method and system of the present invention have a trace is either the predominant technical effects can be provided by the implementation upon request by the external monitoring device fixed network streaming media server mobile client mobile network standards and surveillance fixed network can be extended to mobile video, which corresponds to the trend of convergence of fixed networks and mobile networks and meets a critical need in the development of multimedia services based on the convergence of fixed network and mobile network built-in Manager of the telecommunications device. Mobile clients various network standards can watch videos from a checkpoint at any time and in any place.

A brief description of graphic materials

Figure 1 presents a schematic diagram of the structure of system support mobile terminals of different standards for the implementation of video surveillance and networking between them in accordance with the embodiment of the present invention;

figure 2 shows the sequence of operations to support mobile terminals of different standards for the implementation of surveillance in accordance with the embodiment of the present invention;

figure 3 presents a scheme of the sequence of video on demand in the presence of a mobile streaming media server provided in the embodiment of the present invention;

figure 4 shows the sequence of video on demand clause and the lack of a mobile streaming media server, provided in the embodiment of the present invention.

Preferred embodiments of the present invention

The following is a detailed description of the present invention with reference to the figures and the preferred options for implementation.

In the present invention, the parameters for transcoding various video standards for mobile networks are configured through media transcoding device in accordance with the query video mobile client the encoded media stream to the external control device is verified from the fixed network server streaming media, and transcoding is carried out in accordance with standard network mobile client, and displays the media stream corresponding to the standard network client that allows a mobile client to control the video data of different control points at any time, in any place.

As shown in figure 1, the support system of mobile terminals of different standards for the implementation of surveillance in accordance with the present invention contains media transcoders device 1, the service platform 2, the stationary network streaming media server 3, the external control unit 4, the mobile client 5, the mobile portal mobile 6 and the streaming media server 7.

Media transcoders device 1 that performs the function server mobile client is configured to process the request on-demand video mobile client 5, scan the appropriate information to the external control device 4 with service platform 2, retrieve the encoded media stream to the external control device 4 from the fixed network streaming media server 3 and the implementation of multimedia transcoding the received encoded media stream to send to the mobile client 5.

Service platform 2 is configured to register and manage information media transcoding device 1, the external control device 4, the stationary network streaming media server 3 or stationary network client.

Fixed network streaming media server 3 is configured for retrieving the encoded media stream from the external control device 4, receiving the encoded media stream to the external control device 4 and the direction of the encoded media stream to the media transcoders device 1 or the fixed network to the client; or, if necessary, fixed network streaming media server 3 may store the coded stream the player is Eeyore.

The external control device 4, which may contain a built-in camera or that the camera can be externally connected, configured to encode the input video information from the camera to send to the stationary network streaming media server 3. The encoding format supported by the external control device 4 may be a format 11.264 or a common format, such as MPEG4, etc. To an external monitoring device 4 can be connected a certain number of cameras placed in various locations to monitor multiple control points.

Mobile client 5 is configured to initiate the request on-demand video, receiving the media stream is sent to the media transcoders device 1 or the mobile streaming media server 7, and decoding the encoded media stream to display a visual image. Mobile client 5 may be a mobile client, such as supporting streaming media mobile phone, 3G network terminal, PDA and so on

Mobile portal 6 is configured to obtain information such as an identification number (ID), etc. various external controlling devices from different service platforms, so that the mobile client was tested and WMO is in the system.

Mobile streaming media server 7 is an optional device that is configured for distributing and storing the transcoded output the encoded media stream via the media transcoding device 1. When a relatively large number of mobile clients and with a relatively large number of mobile clients, providing on-demand request of the same external controlling device, mobile network streaming media server 6 may distribute the encoded media stream to reduce the load on the media transcoders device 1.

Figure 1 shows the state of the network system in accordance with the embodiment of the present invention. In figure 1 you can see the position of the media transcoding devices throughout the system and the direction of passage of the encoded media stream. As shown in figure 1, the service platform 2 has a connection with media transcoders device 1, the stationary network streaming media server 3 and the external control device 4, and thus, information about the parameters of different network standards, relevant information fixed network server streaming media and all forms of external kontroliruyusch the device can be registered with the service platform 2 via the network or may be a signaling interaction with the service platform, necessary for reading information.

Media transcoders device 1 and an external control device 4 is connected via a fixed network streaming media server 3 for the formation of the mobile channel encoded media stream. Mobile portal 6 may receive information such as a list of control devices, etc. from the service platform 2, and the mobile client 5 and mobile streaming media server 7 can perform signaling interaction with the service platform 6, which will allow mobile client 5 to get a list of monitoring devices as a source of information request on demand. The external control device 4 sends the encoded notes media attached to the stationary network streaming media server 3 after receiving the on-demand request. Media transcoders device 1 receives the encoded media stream from the stationary network streaming media server 3 and then performs transcoding on the basis of the requirements, and outputs the encoded media stream to the mobile client 5, or a mobile streaming media server 7 then sends the encoded media stream to the mobile client 5.

Figure 2 shows the process of the way to support mobile the terminals of different standards for the implementation of surveillance in accordance with the present invention. It shows only parts related to the present invention, in order to simplify the description.

At step S201, multimedia transcoders device independently adjusts the information used to interact with the service platform, and then configures the settings for transcoding video in accordance with different standards for mobile networks and registers settings transcoding video on the service platform. Parameters transcoding video contain information such as the rate of resolution, speed of encoding, the encoding format and the update period of a frame with internal coding, etc.

On the market there are many types of standards for mobile networks such as GPRS/TD-SCDMA/CDMA 1X/EVDO/WCDMA/WIFI etc. Different standards for mobile networks differ resolution index and encoding speed, while mobile clients can only receive the encoded media stream with a low bit rate and low resolution, and therefore requires media transcoders a device for converting the encoded media stream with a high bit rate and a high resolution fixed network in accordance with the state of the frequency range of different network standards. For example, network standard WCDMA tributylamine encoding in H.264 with the rate of resolution standard QVGA and encoding speed of 256 kilobits per second; network standard EVDO requires changing the encoding in H.264 with the rate of resolution standard QCIF and speed of 128 kilobits per second; these parameters transcoding video can be registered to the service platform via step S201 and provide baseline values for multimedia transcoding device that converts the encoded media stream. Information for interaction with the service platform can be the IP address of the service platform, and multimedia transcoders device can send a request to the service platform via the IP address for information about the video settings of the mobile client or the relevant information external controlling device, etc.

At step S202, the mobile client initiates a request to require a specific external controlling device directly or through a mobile relay streaming media to the media transcoders device, and the request contains the identification number (ID) of the external controlling device and the network standard of the mobile client.

In the embodiment of the present invention, the request but require a specific external controlling device, initiated by the mobile client must contain the network standard of the mobile is the customer, which is used to confirm settings transcoding video in accordance with the network standard from the service platform. Network standard may be specified by a number, for example, 1 is used to denote a CDMA 1X, 2 for an EVDO standard, 3 - to refer to the WCDMA standard, and 4 to denote the standard TD-SCDMA, it is clear that other numbers or symbols can also be used to refer to network standards contained in the request. The request should also contain the identification number (ID) of the external control device on demand, which is used to confirm relevant information external controlling device from a database external controlling device service platform.

At step S203, multimedia transcoders device receives the request and then checks the appropriate information to the external control device of the service platform, and makes a request for a stationary network streaming media server on the encoded media stream to the external controlling device.

Service platform stores the corresponding information to the external control device, which contains one or two identification numbers (ID) of the external control device, the number of channels external con is raerowdege device and the address of the fixed network streaming media server, applies to the external control device, etc. Media transcoders the device can check the address of the fixed network server streaming media refers to the external controlling device, in accordance with the identification number (ID) of the external control device, which is contained in the query. After retrieving the address of the fixed network server streaming media, multimedia transcoders device makes a request for a stationary network streaming media server on the encoded media stream to the external control device through the address. After a certain number of interactions via RTSP stationary network streaming media server sends the encoded media stream is returned from the external control device to multimedia transcoders device.

At step S204, multimedia transcoders device reads the parameter transcoding video network standard used by the mobile client, after receiving the encoded media stream, and sends the encoded media stream to the mobile client or mobile streaming media server after the implementation of transcoding.

Due to the fact that the service platform stores the parameter t is anadyomene video in accordance with a variety of mobile network standards, media transcoders the device can check the parameter transcoding video, the corresponding network standard in the service platform, according to the network standard mobile client contained in the query at step S202, and then the operation transcoding corresponding to the mobile client, the encoded media stream in accordance with the parameter transcode a video to provide a mobile client to perform the decoding and reconstruction in accordance with their own setup after receiving transcoded coded stream.

At step S205, upon receipt of request on request on termination, multimedia transcoders device stops receiving the encoded stream from the stationary network streaming media server and stops transcoding and output.

If the mobile client does not want to look at controlling video, mobile client initiates a request on the request to terminate directly or via mobile streaming media server to the media transcoders device. Request on request on termination contains the identification number (ID) of the external control devices required for termination, and the network standard of the mobile client. According to p is receiving request on request on termination of multimedia transcoders the device performs the operation disconnected from the fixed network server streaming media, and the connection is disconnected after making a certain number of interactions for RTSP. At this time media transcoders device responds to the remote mobile streaming media server or the mobile client, and, by this time, the mobile client terminates the broadcast control video on demand external controlling device.

In the method of the present invention, the mobile client can obtain information such as the list of external monitoring devices, etc. from the service platform via the mobile portal in order to have a free choice of a particular external controlling device, which should be controlled in accordance with video on demand to achieve the objectives of the control. The on-demand request initiated by the mobile client of the present invention, can be directed to a mobile streaming media server, or can be directly sent to the media transcoders device via the mobile client, instead of being directed via mobile streaming media server. Mobile streaming media server is an optional device, and video on demand mobile client will be respectively described in more detail neither the e in the presence and absence of mobile streaming media server.

In the presence of a mobile streaming media server, as shown in figure 3, the mobile client selects the external controlling device on the requirement that a mobile client wants to view, and contains the identification number (ID) of the external controlling device and the network standard of the external controlling device, and then the mobile client makes a request to send the encoded stream to the mobile streaming media server. Mobile streaming media server after receiving the request evaluates whether a connection has been established with the media transcoders device, and, if not, the mobile streaming media server initiates a request to the mobile transcoders device. The following is an example request:

rtsp://172.16.162.38/service?PUID-ChannelNo=320101000200000001-1 &Raum cthod=0&StreamingType=1

The process of the communication request in accordance with the embodiment of the present invention uses a generic at the moment, RTSP, PUID field-ChannelNO in the example query indicates the identification number (ID) of the external control device and the channel number field StreamingType indicates a mobile client. The above example indicates that the encoded media stream on demand is encoded media stream is PE is the first channel external control device with a value 320101000200000001; as in the embodiment, use figure 1 to indicate CDMA IX, 2 for an EVDO standard, 3 - to denote the WCDMA standard and 4 to denote the standard TD-SCDMA, StreamingType=l from the above example indicates that the network standard of the mobile client is a CDMA IX.

Mobile transcoders device checks the information of the external controlling device on demand from the service platform after receiving the request, for example checks the address information of the stationary network streaming media server to which the external controlling device. Service platform receives a request for confirmation of the information by the external monitoring device, and then responds and returns information about the address of a stationary network streaming media server to the media transcoders device. Media transcoders the device asks for the encoded media stream from the stationary network streaming media server, and then after a certain number of interactions via RTSP media transcoders device receives the encoded media stream sent by the fixed network server streaming media.

At this time media transcoders device which learns what mobile client needs in an encoded multimedia stream network CDMA IX in accordance with the value of the previous field StreamingType and checks the parameter transcode a video corresponding to the CDMA IX with a service platform, and performs operations such as encoding, decoding, etc. for the received encoded media stream; for example, if you have determined that the encoded media stream from the network CDMA IX requires transcoders in frame with internal encoding multimedia format H.264, bit rate of 64 kilobits per second, with a rate of resolution standard QCIF and update period of a frame with internal encoding in 2 seconds, media transcoders the device performs a certain number of operations, including decoding, compression, encoding, packaging, etc. in accordance with the specified information parameter and then sends the processed encoded media stream to the mobile streaming media server.

Mobile streaming media server, in this case, is responsible for distributing the encoded media stream to the mobile client. The mobile client receives the encoded media stream and then performs decoding and recovery, and displays the image thus Khujand is stlaa view video control points where the external control device is located on the mobile client.

As shown in figure 4, in the absence of a mobile streaming media server mobile client sends a request on demand for a specific external controlling device directly to the media transcoders device, and the request contains the identification number (ID) of the external controlling device and the network standard of the mobile client. Process media transcoding device requesting the coded stream, and transcoding the media stream after receiving the request are the same as the process shown in figure 3. In the absence of a mobile streaming media server, media transcoders the device performs a certain number of operations, decoding, compression, coding, and packaging over the encoded media stream in accordance with the parameter transcode the video and then sends the processed encoded media stream directly to the mobile client.

As shown in figure 3 and figure 4, if the mobile client does not wish to browse, mobile client initiates a request on the request to terminate the broadcast of the encoded stream directly or through mobile is a streaming media server to the media transcoders device. Media transcoders device receives the request and then forwards the request to the fixed network streaming media server. Then the stationary network streaming media server sends a request to an external controlling device. External controlling device responds and then stops transcoding the encoded video stream. Media transcoders device removes originally established connection and responds to the remote mobile streaming media server or the mobile client at the same time. By this time the mobile client stops broadcasting on demand.

Summarizing the above, the method of support of mobile terminals of different standards for the implementation of surveillance provided in the present invention can support a variety of standards for mobile networks, and mobile clients take advantage of the mobile network, and thus a convenient way to broadcast on-demand multimedia information points of the video at any time and in any place, while video surveillance is no longer limited to a certain stationary location or fixed network that meets the requirements of the free control of the user in different places.

Finally, it should be noted that the above in the ways of implementation used only to describe the technical scheme of the present invention, and not limitations. Although the present invention is described with references to preferred embodiments of, the average expert in the field of technology should be understood that the present invention can be implemented modifications, changes or equivalent replacements without deviating from the scope and essence of the present invention and claims.

Industrial applicability

The way the video through the mobile terminal provided in the present invention can support a variety of standards for mobile networks, and mobile clients take advantage of the mobile network, and thus a convenient way to broadcast on-demand multimedia information points of the video at any time and in any place, while video surveillance is no longer limited to a certain stationary location or fixed network that meets the requirements of the free control of the user in different places.

1. The way the video through a mobile terminal, including:
i. sending the mobile client on-demand request by the external monitoring device to multimedia transcoders device;
ii. receiving multimedia transcoder device specified query, then the requesting encoded sweat the ka multimedia specified external monitoring device from the fixed network server streaming media, transcoding the received encoded media stream; and
iii. the output of the multimedia transcoder device transcoded encoded media stream to the mobile client or mobile streaming media server, where the media transcoders device settings transcoding video that correspond to the various standards for mobile networks.

2. The method according to p. 1, further comprising: receiving a request for the termination of the on-demand media termination transcoders device receiving the encoded media stream from the fixed network server streaming media and termination transcoding and output.

3. The method according to p. 1, where the phase i includes the relay specified mobile client to the specified on-demand request to the external controller via mobile streaming media server.

4. The method according to p. 1, or 2, or 3, where the parameter transcoding video provides an indicator of the resolution, bit rate, encoding format, and the refresh period of a frame with internal encoding.

5. The method according to p. 4, where the specified request is sent to the specified mobile client, contains the identification information (ID) of the specified external monitoring device and network standard specified mobile Kli the NTA.

6. The method according to p. 1 or 5, further includes: a preliminary preservation of relevant information specified by the external monitoring device and the specified transcoding video service platform, where the relevant information specified by the external monitoring device contains one or two identification numbers (ID) of the specified external monitoring device, the number of channels specified by the external monitoring device and the address of the fixed network streaming media server, which is specified by the external monitoring device.

7. The method according to p. 1 or 5, where after the step of obtaining the specified media transcoders device specified query phase ii further includes: checking the specified external monitoring device addresses stationary network streaming media server, which is specified by the external monitoring device with a service platform, and the querying of the encoded media stream from the stationary network streaming media server based on the specified address; querying the specified fixed network server streaming media encoded media stream from the specified external monitoring device and sending the encoded photocathode, returned by the specified external monitoring device to the specified media transcoders device; and verifying the specified media transcoders device parameter transcoding video in accordance with the network standard of the specified mobile client from the service platform in such a way as to convert the received encoded media stream in accordance with the specified parameter transcoding video.

8. System implementation of video monitoring by a mobile terminal, comprising: a media transcoders device (1)configured to process the request according to the request from the mobile client (5), retrieve the encoded media stream from the fixed network server streaming media (3), the implementation of multimedia transcoding the received encoded media stream for output and set transcoding video corresponding to the different standards of mobile networks; service platform (2)that is configured to register and manage information specified media transcoding device (1), the external control device (4), stationary network streaming media server (3) or stationary client network; a stationary network streaming media server (3, configured to request and receive encoded multimedia stream specified by the external monitoring device (4), and direction of the received encoded media stream; external controlling device (4)configured to encode the input video data by the controlling device, and the response to the request to send the encoded media stream from the specified fixed network streaming media server (3); and a mobile client (5)that is configured to initiate the request on-demand video, receiving the encoded media stream is received in response from the media transcoding device (1) or a mobile streaming media server (7); where the specified service platform (2) respectively connected with the specified media transcoders device (1), the specified fixed network streaming media server (3) and the specified external monitoring device (4), and the specified media transcoders device (1) is additionally connected with the specified external monitoring device (4) through the fixed network server streaming media (3).

9. The system under item 8, further comprising: a mobile portal (6), configured to receive information of various external controlling devices from the data service platform (2) to test and logon to the specified mobile client (5); and mobile streaming media server (7)that is configured to distribute and store the encoded media stream is transcoded and output by the specified media transcoding device (1).

10. The system under item 8 or 9, where the specified mobile client (5) is supporting streaming media mobile phone, or a network terminal of the third generation (3G), or personal digital assistants (PDA).



 

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SUBSTANCE: method includes steps of: method involves receiving a reference signal from an access point; obtaining a rank indicator, a codebook subset selection indicator and a precoding matrix index based on the obtained reference signal; sending a first return link message, which transmits the rank indicator and the codebook subset selection indicator, and sending second return link message which transmits the precoding matrix index to the access point; receiving from the access point, data that are precoded using a matrix obtained based on the rank indicator, codebook subset selection indicator and precoding matrix index.

EFFECT: rank indicator coding efficiency.

18 cl, 19 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a cellular communication system which creates an aircraft-based Internet Protocol (IP) subnet in an airborne wireless cellular network. Disclosed is an aircraft IP subnet system, which provides wireless communication services to passengers located on-board an aircraft by storing data relating to individually identified passenger wireless devices that are located on-board the aircraft. The aircraft IP subnet system assigns an IP address to each point-to-point protocol link connecting the aircraft network to a ground-based communication network and creates an IP subnet on-board the aircraft. The subnet uses a plurality of IP addresses for each point-to-point link, thereby enabling each passenger wireless device to be uniquely identified with its own IP address, wherein both point-to-point protocol IPCP endpoints have pre-defined IP address pools and/or topology configured, so that each point-to-point protocol endpoint can use more than one IP address one per link.

EFFECT: controlling broadband connection to enable individual passenger identification by assigning unique individual IP addresses to each passenger wireless communication device.

16 cl, 10 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to wireless communication and specifically to setting up a wireless connection between proximate devices. The technical result is faster setup of a wireless connection between wireless communication devices. To this end, a device may send detection messages to detect other devices. The device may receive one or more messages in response to the detection message and may determine whether any of the received messages satisfies predefined response criteria. If the device determines that any of the received messages satisfies the response criteria, faster setup of a wireless connection between said device and the source device of each of the received messages which satisfy the response criteria may be facilitated. In a case when a communication setup mode can be activated when devices are converged, in the device receiving the message from at least another device, said device may determine whether that message satisfies the predefined criteria. If so, the device may facilitate faster setup of a wireless connection with another device.

EFFECT: device may facilitate faster setup of a wireless connection with another device.

15 cl, 11 dwg

FIELD: physics, computation hardware.

SUBSTANCE: invention relates to coding/decoding of picture signals. Method for variation of reference block (RFBL) with reference pixels in reference picture (I_REF) converts (TRF) reference block to first set of factors (REF (u, v,)). It changes the first set of factors (REF (u, v,)) with the help of one or several weights (TR (u, v,)) and executes the inversion (ITR) of changed. Note here that weights (TR (u, v,)) are defined by extra pixels in current picture (I_CUR) and extra reference pixels in reference picture. Application of extra pixels and extra reference pixels allows the determination of spectral weights so that they display the effects of attenuation. Particularly, if reference frame consists of two black-out frames one of which should be forecast with the help of reference frame, then assignment of weights in spectral band allows isolation of significant frame from two frames.

EFFECT: efficient coding in the case of attenuation.

10 cl, 3 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering. The method of transmitting a stream of unencrypted images involves encoding the stream of images and sending a compressed stream of images to at least one receiving device. Before encoding, images of the unencrypted stream of images are converted via a secure reversible conversion to obtain a converted stream of images which is encoded and transmitted in place of the unencrypted stream of images. The secure reversible conversion converts each image from a sequence of unencrypted images.

EFFECT: high security of a stream of unencrypted images.

12 cl, 9 dwg

FIELD: information technology.

SUBSTANCE: method of compressing images programmed in a controller of a device, comprising: partitioning an image into one or more blocks; applying gamma conversion to each pixel of the image to generate data with the same number of bits; computing prediction values for each pixel in each block of the one or more blocks using a plurality of prediction modes; applying quantisation to each pixel of each block of the one or more blocks using a plurality of quantisation numbers; computing differential pulse code modulation (DPCM) to generate residuals of the quantised values for each of the plurality of quantisation numbers, wherein the number of bits generated for each block of the one or more blocks is equal to the bit budget; computing pulse code modulation (PCM), which includes shifting each pixel value by a fixed number of bits; selecting for each block of said one or more blocks, DPCM with a quantisation number where the best quantisation accuracy is achieved; selecting an encoding method from the DPCM with said quantisation number and PCM; and generating a bit stream containing data encoded using the selected encoding method.

EFFECT: compression without visual losses.

14 cl, 17 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to means of digitising a frame image.

EFFECT: frame digitisation with not three converters in each matrix element but with one converter in each matrix element which, during the frame period, concurrently and synchronously performs three successive conversions of colours R, G, B with 15 bits each, and image digitisation ends at the end of the frame period.

4 dwg

FIELD: information technology.

SUBSTANCE: image compression method, based on excluding a certain portion of information, wherein the information is excluded from the space domain through numerical solution of Poisson or Laplace differential equations, and subsequent estimation of the difference between the obtained solution and actual values at discrete points of the image; generating an array of boundary conditions, which includes a considerable number of equal elements which is compressed, and the image is reconstructed by solving Poisson or Laplace partial differential equations using the array of boundary conditions.

EFFECT: eliminating loss of image integrity, high efficiency of compressing images having large areas of the same tone or gradient and maintaining contrast of boundaries between different objects of an image.

2 cl, 16 dwg

FIELD: information technology.

SUBSTANCE: method is carried out by realising automatic computer formation of a prediction procedure which is appropriately applied to an input image. The technical result is achieved by making an image encoding device for encoding images using a predicted pixel value generated by a predetermined procedure for generating a predicted value which predicts the value of a target encoding pixel using a pre-decoded pixel. The procedure for generating a predicted value, having the best estimate cost, is selected from procedures for generating a predicted value as parents and descendants, where the overall information content for displaying a tree structure and volume of code estimated by the predicted pixel value, obtained through the tree structure, is used as an estimate cost. The final procedure for generating a predicted value is formed by repeating the relevant operation.

EFFECT: high efficiency of encoding and decoding, and further reduction of the relevant volume of code.

12 cl, 14 dwg

FIELD: information technologies.

SUBSTANCE: in the method of processing of raster images, including compression of an image by the method of "cut block coding" or its modifications, before the procedure of compressing coding they perform digital filtration, which increases sharpness of the compressed image, and after the decoding procedure they perform smoothing digital filtration of the decoded image.

EFFECT: improved quality of decoded raster images when methods used for their compressing coding on the basis of cut block coding or their modifications, improved current formalised criteria.

3 cl, 8 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of encoding transform coefficients includes: encoding the position and value of a last non-zero coefficient of a block; encoding at least one coefficient in accordance with a first coding mode if the amplitude of said at least one coefficient is less than or equal to a threshold; and determining a cumulative sum of amplitudes of previously coded non-zero coefficients that are greater than the threshold; and if the cumulative sum is less than a cumulative threshold value, and the position of the last non-zero coefficient is less than a location threshold: coding a subsequent coefficient in accordance with the first coding mode; otherwise, coding a subsequent coefficient in accordance with a second coding mode.

EFFECT: high encoding efficiency.

22 cl, 8 dwg

FIELD: information technology.

SUBSTANCE: methods and systems for processing document object models (DOM) and processing video content are provided. Information content which is represented by a DOM and which includes a scripting language associated with the information content is received and original content of the DOM is stored after execution of the scripting language. Further, video content is adapted for client devices. The scripting language associated with the information content can be sent to client device along with a modified DOM and processed video content. Pre-processing of the scripting language is carried out to identify nodes related to video content and to maintain all other original nodes, for example.

EFFECT: easier processing of video data.

23 cl, 12 dwg

Video camera // 2473968

FIELD: information technology.

SUBSTANCE: video camera has a portable housing having a light focusing lens, a light-sensitive device which converts the focused light into source video data, a storage device installed in the housing, and an image processing system configured to introduce predistortions into the source video data and compression thereof, wherein the compressed source video data remain essentially visual without loss after decompression, and also configured to store compressed source video data in the storage device.

EFFECT: reduced loss of quality of a compressed image during decompression and display.

22 cl, 18 dwg

FIELD: systems for encoding and decoding video signals.

SUBSTANCE: method and system for statistical encoding are claimed, where parameters which represent the encoded signal are transformed to indexes of code words, so that decoder may restore the encoded signal from aforementioned indexes of code words. When the parameter space is limited in such a way that encoding becomes inefficient and code words are not positioned in ordered or continuous fashion in accordance with parameters, sorting is used to sort parameters into various groups with the goal of transformation of parameters from various groups into indexes of code words in different manner, so that assignment of code word indexes which correspond to parameters is performed in continuous and ordered fashion. Sorting may be based on absolute values of parameters relatively to selected value. In process of decoding, indexes of code words are also sorted into various groups on basis of code word index values relatively to selected value.

EFFECT: increased efficiency of compression, when encoding parameters are within limited range to ensure ordered transformation of code word indexes.

6 cl, 3 dwg

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