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 [1].

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 [2].

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.

 

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