KR19990061652A - Scart Connector Automatic Switching Device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a SCART connector automatic switching device, and more particularly, to receive priority data of each set skat from a controller initially, and to compare the detected scat control signals with scat priority data and prioritize them. Will automatically switch the scat control signal of the highest scat, the audio signal and the video signal, and if the signal output operation of the high priority scot is finished, the corresponding signal of the scatter with the next lowest priority is automatically switched and output. By doing so, the present invention relates to an automatic switching device for a skat connector that reduces the load on the control unit and improves the performance of the switching device.

Description

Scart Connector Automatic Switching Device

The present invention relates to a system having a plurality of connectors capable of inputting and outputting audio / video signals. In particular, the present invention relates to a plurality of SCART connectors capable of inputting and outputting audio / video signals. The present invention relates to an automatic switching device for a scart connector to be switched.

Generally, in a system using two or more skat connectors for audio / video input / output, such as a satellite broadcasting receiver or a digital video disc player, the priority is set for each skat to input / output the audio / video signal of the skat according to the priority. do. Such a skat connector can input and output signals using a single line, and can distinguish input and output of signals by a set signal level.

FIG. 1 is a block diagram of a scart connector switching device of a set-top box having two or more scart connectors.

As shown, the satellite signal receiving module 16 is connected to the antenna 20 for receiving satellite broadcast signals; A scart interface (11) connected to a video tape recorder (hereinafter referred to as VTR) 30 to output a scart control signal for controlling the video signal and the video signal input / output; Another scat interface 12 which is connected to an audio / video device (hereinafter referred to as an A / V device) 40 and outputs a scart control signal for controlling the input / output of the audio / video signal and the audio / video signal; A controller 14 for monitoring the skat control signals output from the skat interfaces 11 and 12 and generating a switching control signal so that an audio / video signal corresponding to the input scat control signal is switched according to the set scat priority. )Wow; A switch (15) for switching audio / video signals output from the skat interface (11) and the satellite signal receiving module (16) according to a switching control signal generated from the controller (14); It consists of a skat interface 13 for outputting the audio / video signal switched by the switch 15 to the TV (50).

Referring to the operation of the scat connector switching device of the set-top box having two or more scat connectors in general configured as follows.

First, when the scat control signal and the audio / video signal are output from the skat interface 11 connected to the VTR 30, the control unit 14 monitors the scat control signals output from the respective skat interfaces 11 and 12. Then, the skat control signal of the skat interface 11 is detected and the switching control signal is transmitted to the switch 15 so that the audio / video signal corresponding to the skat control signal is output to the TV 50.

The switch 15 then switches the audio / video signal from the VTR 30 in accordance with this switching control signal and transfers it to the TV 50 via the skat interface 13.

Then, when the audio / video signal from the A / V device 40 is transferred together with the scat control signal through the skat interface 12, the controller 14 detects the scat control signal from the A / V device 40. The switching control signal is transmitted to the switch 15 so that the audio / video signal from the A / V device 40 is transmitted to the TV 50. Here, it is assumed that the skat connected to the VTR 30 has a lower priority than the skat connected to the A / V device 40.

Thus, the switch 15 stops the transmission of the audio / video signal from the VTR 30 in accordance with the switching control signal of the control unit 14, switches the audio / video signal from the A / V device 40, and changes the TV 50. Will be delivered.

However, in the conventional SCAT connector switching device having two or more SCART connectors, the control unit continuously monitors the SCART control signal of each SCART interface, and each time the SCART control signal is detected, the SCART connector switching device is set according to the set SCART priority. By outputting a switching control signal so that the audio / video signal corresponding to the scat control signal is switched, the switch only performs an operation of switching the audio / video signal according to the control of the controller, resulting in an excessive load of the controller.

An object of the present invention is to solve the conventional problems as described above, in particular, by detecting the scat I / O control signal output from each skat interface corresponding to the scat I / O control signal according to the scat priority transmitted initially from the control unit The present invention provides a scat connector automatic switching device that automatically switches audio / video signals.

The present invention to achieve the above object,

A controller for initially generating priority of each skat; A plurality of scart interfaces connected to a device capable of inputting / outputting audio / video signals and outputting a scart control signal and an audio signal and a video signal, respectively; The scat selector receives the skat control signal, the audio signal and the video signal from each skat interface, and outputs the scat control signal, the audio signal and the video signal according to the scat priority transmitted from the controller. do.

1 is a block diagram of a conventional skat connector switching device,

2 is a block diagram of an automatic switching device for a skat connector according to the present invention;

FIG. 3 is a block diagram illustrating the scart selection unit of FIG. 2; FIG.

4 is a block diagram illustrating the scat priority processing unit of FIG. 3;

Explanation of symbols for the main parts of the drawings

100: control unit 200, 300, 400: skate interface

500: Skat selector 510: Control interface

520: Skate priority processing unit 530: Audio / video switching unit

521: Scat control signal detection unit 522: Priority data storage unit

523: comparator 524: switch control signal generator

Hereinafter, the configuration and operation of an embodiment according to the technical spirit of the present invention SCART connector (CONNECTOR) automatic switching device will be described in detail with reference to the accompanying drawings.

Example

First, as shown in FIG. 2, the configuration of the SCART connector automatic switching device includes: a controller 100 which initially generates priority of each skat; A plurality of skat interfaces (200, 300, 400) connected to a device capable of inputting / outputting audio / video signals to output a scat control signal and an audio signal and a video signal, respectively; The skat control signal, the audio signal and the video signal are received from the skat interface 200, 300 and 400, and the scat control signal, the audio signal and the video signal are output according to the scat priority transmitted from the controller 100. It is composed of a scart selector (500).

As shown in FIG. 3, the skat selector 500 includes a control unit interface 510 for latching initial skat priority data transmitted from the control unit 100, and each skat interface 200. The audio / video switching unit 530 is controlled to detect the scat control signal from the 300 and 400 and switch the audio signal and the video signal according to the initial scat priority data of the controller interface 510. The scat priority processing unit 520 and the audio / video switching unit 530 outputting the audio signal and the video signal to the scat interface under the control of the scat priority processing unit 520.

The scat priority processing unit 520 may include a scat control signal detecting unit 521 for detecting a scat control signal from each scat interface 200, 300, and 400, and an initial latched by the control unit interface 510. The priority data storage unit 522 for storing the priority data of the skat, and the scat control signal detected by the scat control signal detector 521 and the priority data output from the priority data storage 522 are compared. The comparator 523 outputs the scart number having the highest priority, and the switch control signal generator 524 decodes the scart number output from the comparator 523 and outputs it as a switching control signal.

Referring to the operation of the SCART connector (CONNECTOR) automatic switching device according to the present invention configured as described above are as follows.

First, the controller 100 sets priority for a plurality of scarts and initially transfers the scart priority data to the scart selector 500. Then, the controller interface 510 in the skat selector 500 latches the initial priority data from the controller 100 and transfers the initial priority data to the priority data storage 522 in the scat priority processor 520. The priority data storage unit 522 then stores the scart priority data.

Thereafter, when the scat control signal, the audio signal, and the video signal are input to the skat selector 500 through the skat interface 200, 300, 400, the scat control signal detector 521 in the skat selector 500. Detects a skat control signal, and the audio / video switching unit 530 receives an audio signal and a video signal. Here, the skat connector is a connector that can input and output audio / video signals.If the signal of pin 8 of the skat interface is 0 V, the skat connector indicates the input signal, and if it is 12 V, the scat control signal controls the input / output direction. Is a signal. When the scat control signal is detected, the input / output state of each skat can be recognized, and each scat should be output with priority over a signal input from another scat, so that the priority data is sent to the scat selector 500 from the controller 100. Will be recorded.

Then, the comparator 523 compares the sensed control signal with the priority data drawn from the priority data storage unit 522 and outputs the scart number having the highest priority to the switch control signal generator 524. The switch control signal generator 524 decodes the skat number to transfer the switching control signal to the audio / video switching unit 530. Then, the audio / video switching unit 530 outputs the corresponding audio signal and the video signal to the corresponding scat interface by the switching control signal transmitted from the switch control signal generator 524.

After the scat priority of the scat control signal detected by the scat control signal detection unit 521 is lower than the scat priority of the scat control signal currently output to the corresponding scat interface, the current operation state is maintained.

Then, when the scat control signal of the skat which is higher than the scat priority of the scat control signal currently being output is detected, the scat control signal of the high scat and the audio signal and the video signal are switched. In this way, when the transmission of the scat control signal and the audio signal and the video signal of the high priority skat ends, the switching control signal is generated again so that the scat control signal, the audio signal and the video signal of the low priority scat are output. . Thus, the audio / video switching unit 530 switches the corresponding audio signal and the video signal according to the switching control signal. In this operation, the scat control signal, the audio signal, and the video signal of the scat are automatically switched by the scat priority data transmitted from the controller 100 initially.

As described above, the present invention SCART connector automatic switching device, in particular, the scat I / O control according to the scat priority transmitted from the control unit initially detects the scat I / O control signal output from each scat interface There is an effect of automatically switching the signal, the audio signal and the video signal.

In addition, it is possible to reduce the load of the controller by providing only the initially set scat priority data instead of monitoring the scat I / O control signals of each scat.

Claims (3)

In a system having a plurality of scart connectors for inputting and outputting audio / video signals, A controller 100 for initially generating priority data of each skat; A plurality of skat interfaces (200, 300, 400) connected to a device capable of inputting / outputting audio / video signals to output a scat control signal and an audio signal and a video signal, respectively; The skat control signal, the audio signal and the video signal are received from the skat interface 200, 300 and 400, and the scat control signal, the audio signal and the video signal are output according to the scat priority transmitted from the controller 100. SCART connector (CONNECTOR) automatic switching device, characterized in that consisting of a scart selector (500). The method of claim 1, wherein the skat selector 500, The controller interface 510 for latching initial scat priority data transmitted from the controller 100 and the skat control signals from the skat interfaces 200, 300, and 400 are detected to control the controller interface. Scat priority processing unit 520 for controlling the audio / video switching unit 530 so that the audio signal and the video signal is switched according to the initial scat priority data of 510, and the scat priority processing unit 520 Scat connector automatic switching device, characterized in that consisting of the audio / video switching unit 530 for outputting an audio signal and a video signal to the corresponding scat interface under the control of. The method of claim 2, wherein the scat priority processing unit 520, Priority data for storing the scat control signal detection unit 521 for detecting the scat control signal from each scat interface (200, 300, 400) and the initial scat priority data latched by the control unit interface (510) The scat control signal detected by the storage unit 522, the scat control signal detection unit 521 and the priority data output from the priority data storage unit 522 are compared to output the scat number having the highest priority. Scatter connector automatic switching device comprising a comparator (523), and a switch control signal generator (524) for decoding the scat number output from the comparator (523) and outputs it as a switching control signal.