The device diskriminirovaniya television signal
(57) Abstract:The inventive device diskriminirovaniya television signal contains a printed circuit Board, the coaxial socket, the plug and the General case. Coaxial socket and plug set of orthogonal, their outer conductors are made in the form of a single l-shaped plate with cylindrical contacts at the ends, and their inner conductors are spring-loaded terminals for connection with the contacts of the PCB. Printed circuit Board provided with an additional sealed enclosure with cut-out for contact with napravlenii interacting with grooves made in the General case. 1 C.p. f-crystals, 2 Il. The invention relates to electrical engineering and can be used in pay-TV systems.It is known device diskriminirovaniya television signal, comprising a housing that is located in it's circuit Board, on which are fixed tailpiece extending from the housing and having terminals for connection fees. Part of the payment is included in the connector, and the protruding portion of the circuit Board coated with plastics .This device is inconvenient to use, since when installing or replacing a card, you need access to the inside flat-screen television is offered to the device, taken as a prototype, and containing the circuit Board, the coaxial socket, the plug and the General case. Socket and plug are located on the same axis, and the contacts of the plug have a galvanic connection to the contacts of the PCB .As in the prototype coaxial socket and plug are located on the same axis, the connection to the device prototype antenna cables and devices to the antenna socket of the television receiver can be performed only in the horizontal direction. And this creates additional bending load on the antenna socket and reduces the reliability of connection of the prototype with the television receiver. In addition, when the change cipher TV signal requires replacement of the PCB together with the bearing structure or a relatively time-consuming operation of soldering the circuit Board in the connector.The purpose of the invention is to enhance reliability and convenience in operation.This is achieved by the fact that the device diskriminirovaniya television signal containing the circuit Board, the coaxial socket, the plug and the General case, the coaxial socket and the plug is installed in the orthogonal case, the outer conductor is made e contacts for connection with the contacts of the PCB. This printed circuit Board is provided with an additional sealed enclosure with cutout for contacts and guides interacting with grooves made in the General case.In Fig.1 shows the proposed device, the sectional view of Fig.2 - section a-a in Fig.1.The proposed device comprises a circuit Board 1 made in the form of a card with notch filter 2, closed two sealed covers 3 through the rubber seal 4. The lid 3 has holes 5, which are placed in contact 6-8 Board 1, and the guide ribs 9 for engagement with the slots 10, embodied in a common plastic housing 11. In the housing 11 orthogonal installed coaxial socket 12 and the plug 13. Their external conductor is made in the form of l-shaped plate 14, for example from solid brass with a thickness of 0.4 mm, with the cylinders 15 and 16 at the ends. The internal conductors 7 and 8 are installed in the insulating plastic sleeves 19 and 20 and have spring contacts 21 and 22 for connection with the contacts 6 and 8 Board 1. To ground pin 7-card 1 has a contact spring 23 to l-shaped plate 14.The proposed device operates as follows.The housing 11 by means of a plug 13 set n is denaut antenna cable. Then in the casing 11 is inserted is made in the form of a removable card PCB 1, moving it to the guide ribs 9 and the grooves 10 to the interaction of the contacts 6 and 8 Board 1 with spring contacts 21 and 22 of the inner conductors 17 and 18 and pin 7 with pin 23 of the outer conductor.Scrambled signal through a coaxial outlet 12 of the PCB 1, descramblers and through the plug 13 is received by the television receiver. When you change cipher television broadcast signal using a removable card with the corresponding circuit Board 1, for which it is easy to replace in the same housing 11. High-quality reproduction descrambling television signal in the proposed device with each of the corresponding replacement card is provided by selection of the dimensions of the inner conductors 17 and 18 and outer conductor, made in the form of l-shaped plate 14, on the basis of the conditions for obtaining the resistance at the input and output 75 Ohms.Because the coaxial socket and plug are orthogonal relative to each other, and the outer conductor is made in the form of l-shaped plate antenna cable inserted from below into the outlet, has a small consolizing receiver, providing a reliable contact in the long run. In addition, the implementation of the proposed device with replaceable card increases the usability, as if changing the cipher does not require replacement of the entire body, and required only a simple reinstall of the PCB. 1. The DEVICE DISKRIMINIROVANIYA TELEVISION SIGNAL containing the circuit Board, the coaxial socket, plug and shared housing, characterized in that the coaxial socket and plug set of orthogonal, their outer conductors are made in the form of a single l-shaped plate cylinders at the ends, and on one of the inner conductors placed spring-loaded terminals for connection with the contacts of the PCB.2. The device under item 1, characterized in that the printed circuit Board is provided with an additional case with a cutout for contacts and guides interacting with grooves made in the General case.
FIELD: information technologies.
SUBSTANCE: method consists in generation of a noise signal and its mixing with an additional signal with subsequent use of a signal produced as a result of mixing as a masking signal, an additional signal is a clock signal of the information processing system (IPS). The device comprises a noise signal generator, an amplifier, a signal frequency converter, such as a unit of the information processing system clock frequency, and a signal frequency converter is a mixer of a noise signal and a signal of the information processing system clock frequency.
EFFECT: reduced capacity of a masking noise signal with coverage of radiation level and frequency spectrum.
6 cl, 2 dwg
FIELD: physics, computer engineering.
SUBSTANCE: invention relates to radio engineering and electronics and can be used to protect information of computer equipment, automated workstations and wire lines from information leakage as a result of stray electromagnetic radiation and cross talk. The noise signal generator has two outputs which are controlled based on signal strength. The additional noise signal generator used is an impact avalanche transit time noise diode with an amplifier and a variable resistor for controlling the additional noise signal strength, and the emitting low-frequency element used is an inductance coil with distributed parameters, which enables to generate the low-frequency part of the magnetic component o the electromagnetic field of the noise signal.
EFFECT: wider spectrum of the output noise signal in the region of low and high frequencies, high uniformity of spectral power density of the noise signal, enabling control of noise signal strength.
4 cl, 1 dwg
FIELD: radio engineering, communication.
SUBSTANCE: analogue speech signal is sampled with a standard frequency of 8000 Hz. The sampled speech signal is transmitted to the input of a bandpass filter with cut-off bands of 0.3 kHz and 3.4 kHz. Discrete Fourier transform is performed over the filtered signal to obtain expansion coefficients. Further, the expansion coefficients are rearranged in reverse order. Inverse discrete Fourier transform is then performed, after which the spectrum of the speech signal becomes inverted with respect to the initial spectrum. The disclosed transformation is characterised by that the signal becomes inverted on time.
EFFECT: faster transformation.
SUBSTANCE: method of block encryption with a private key, including partitioning messages into the transmitter on a separate set of k-bit data blocks in the number (N≥2), carrying out initialization of the private key before sending the message (when i=0) in the transmitter and the receiver with the same value of the private key, forming subkey sequences from the private key, followed by their decryption in the transmitter of the corresponding transmitted data blocks, block-by-block transmitting the data generated in the communication channel and the subsequent decryption of the transmitted data blocks at the receiver through the mentioned sunkey, including various modifications, at first the service information block that contains the modifier of the (i+1)-th closed subkey is attached to the (i)-th data block in the transmitter, and then the data block and service information are encrypted with the (i)-th subkey of the plurality of the sunkeys, and then the control bits are formed and added to the i-th transmitted block, then the (i)-th block with the control bits is sent to the receiver, where the correctness of the (i)-th received block is controlled by the control bits, then the (i)-th received block is encrypted with the (i)-th closed subkey and separated into the i-th data block and (i)-th service information block, the value of the next (i+1)-th closed subkey is formed with the possibility of decrypting the next (i+1)-th block by it in the receiver of the (i)-th subkey and the (i+1)-th modifier; moreover, after transmitting, receiving and controlling the correctness of each of the i-th transmitted block in the transmitter and the receiver, synchronously a new value of the closed subkey is set from the plurality of subkeys of the private encryption key, then the transmission of the next (i+1)-th data block is resumed with the (i+2)-th modifier private subkey in the transmitter, and the received message is formed in the receiver from the correctly received data blocks. The data blocks are mixed with the blocks containing random numbers in the transmitter, then, after encryption, the blocks are transmitted at different frequencies, wherein a block number is transmitted in the service information block, which indicates that the block contains random numbers, as well as the code specifying the transmission frequency for the next block, and the blocks are received at different frequencies in the receiver, after the decryption, the blocks containing random numbers are separated from the blocks containing the data, then the data blocks are ordered by numbers, and a message is formed from them, the receiver generates a receipt on each correctly received data block and transmits it by radio to the transmitter.
EFFECT: increased crypticity.
3 cl, 3 dwg
FIELD: advertising engineering using cable television systems.
SUBSTANCE: user multimedia terminal saves preset identification number of target group of viewers in its memory. Cable signal being transmitted incorporates identification numbers of target groups of viewers apart from video item presented in the form of digital video signal and accompanying primary audio signal. Application program of user multimedia terminal finds out if alternative audio accompaniment signal is present in cable signal and compares preset identification number with those contained in cable signal to determine audio accompaniment signal to be reproduced in given video item.
EFFECT: provision for saving preset number of target group of viewers in user multimedia terminal memory.
8 cl, 3 dwg
FIELD: access control systems.
SUBSTANCE: proposed signal processing method involves reception of digital input signal incorporating first component of scrambled signal and second component of scrambled signal; binding of input signal with detachable intelligent card unit for processing first scrambled signal component and generation of first descrambled signal which is internal with respect to intelligent card unit and for processing second scrambled signal component in case of response to first descrambled signal to generate second descrambled signal and to integrate first scrambled signal component of input signal and second descrambled signal so as to produce output signal; reception of output signal from intelligent card unit and processing of second descrambled signal to shape signal adapted for display.
EFFECT: improved control of access.
1 cl, 9 dwg
SUBSTANCE: television add-on is provided with inner software, allowing to observe interesting events, and allowing other peripheral devices to connect thereto. In particular, add-on has three components, necessary for dispensing its basic functions: hardware, operating system and resident application. Each component provides separate set of application interfaces, which allow the application to query and direct hardware for performing certain functions, determine events observed by operating system, observe events taking place in resident program.
EFFECT: broader functional capabilities.
10 cl, 12 dwg
SUBSTANCE: device converts signals to digital video information. Compression device is made in such a way, that it receives digital video data, coming from source data generator, and compresses digital images. Encoding device receives compressed digital video data coming from compression device and encodes compressed digital video data. Recording device stores encoded compressed digital audio data at data carrier.
EFFECT: higher data transfer speed.
3 cl, 17 dwg
FIELD: broadcasting systems.
SUBSTANCE: method includes broadcasting of message, including text portion intended to reach user, while said message is transferred in form of conditional access message.
EFFECT: broader functional capabilities.
5 cl, 7 dwg