KR100214117B1 - Apparatus for multi-data distribution using time switch - Google Patents

Abstract

The present invention relates to a multiple data distribution apparatus using a time switch, comprising: a plurality of ADCs for receiving a video source or an audio source of an analog signal from a plurality of sources and converting the signal into pulse code modulation data of a digital signal; A time switch that is switched and outputted in a TDM manner by receiving pulse code modulation data of a digital signal from a plurality of ADCs, and storing and reading the same in a memory; A channel controller which controls the time switch to switch the pulse code modulation data of the digital signal transmitted from the ADC for each channel; A plurality of DACs receiving PCM data of a digital signal switched in a TDM manner from a time switch to a video source or an audio source of an analog signal; It includes multiple terminals that receive video or audio sources of analog signals from multiple DACs and output different broadcasts at the same time, so that PCM data of analog or video sources and audio sources are converted to each other, and time-switched. By classifying and assigning PCM data for each channel, different broadcasts can be output simultaneously for a plurality of terminals.

Description

Multiple Data Distribution Device Using Time Switch

The present invention relates to a multiple data distribution device, and more particularly, to a multiple data distribution device that can simultaneously transmit data after distributing data using a time switch.

In general, data output from a conventional time division modulation (hereinafter, abbreviated as TDM) scheme is simultaneously supplied through a plurality of terminals, that is, a plurality of speakers when the source is an audio source, and the source is a video source. The case is fed simultaneously through the monitor.

That is, the multiple data supply apparatus includes first and second sources 1 and 2, a time division modulator 3, and first, second, third and fourth terminals 4 and 5 as shown in FIG. It consists of (6) (7).

The first and second sources 1 and 2 output the audio source or the video source necessary for broadcasting to the time division modulator 3.

In this case, since the first and second sources 1 and 2 cannot simultaneously output analog signals to the time division modulator 3, broadcast output is possible by only one source.

The time division modulator 3 receives the analog signals transmitted from the first and second sources 1 and 2 and binds the audio source or the video source into multiples, and then the first, second, third and fourth terminals 4 and 5 6) distributes analog signals equally.

Then, the first, second, third and fourth terminals 4, 5, 6 and 7 receive analog signals in the same way and then broadcast them.

In the conventional multiple data supply apparatus configured as described above, all analog signals output from the time division modulator 3 are simultaneously transmitted to all terminals connected to the time division modulator 3.

However, the conventional multiple data supply apparatus as described above has a problem that only the same broadcast output by one source is possible, and multiple broadcast outputs cannot be simultaneously transmitted and broadcast to multiple terminals.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to convert a plurality of analog signals into digital signals in a TDM scheme and then transmit them to a plurality of designated terminals, thereby transmitting different broadcast data for each channel. It is to provide multiple data distribution device using one time switch to output.

The present invention for achieving the above object relates to a multiple data distribution device using a time switch, a plurality of ADCs for receiving a video source or an audio source of an analog signal from a plurality of sources and converts it into pulse code modulation data of a digital signal; ; A time switch that is switched and outputted in a TDM manner by receiving pulse code modulation data of a digital signal from a plurality of ADCs, and storing and reading the same in a memory; A channel controller which controls the time switch to switch the pulse code modulation data of the digital signal transmitted from the ADC for each channel; A plurality of DACs receiving PCM data of a digital signal switched in a TDM manner from a time switch to a video source or an audio source of an analog signal; It includes a plurality of terminals receiving video sources or audio sources of analog signals from a plurality of DACs and outputting different broadcasts at the same time.

1 is a block diagram of a conventional multiple data supply apparatus;

2 is a block diagram of a multiple data distribution apparatus using a time switch according to the present invention;

3 is a detailed block diagram of the TDM scheme shown in FIG. 2;

Explanation of symbols for main parts of the drawings

10, 13, 17, 20: 1, 2, 3, 4 source 30: time division modulator

31,32,33,34: 1st, 2, 3, 4 ADC36: Time switch

38: channel controller 40, 50, 60, 70: 1, 2, 3, 4 DAC

80,90,100,110: 1st, 2, 3, 4 terminal

Hereinafter, the objects and features of the present invention will be described in more detail with reference to the accompanying drawings so that the objects and features of the present invention can be more clearly understood.

2 is a block diagram of a multiple data distribution apparatus using a time switch according to the present invention, wherein the first, second, third, and fourth sources 10, 13, 17, 20, and the time division modulator 30 are used. And first, second, third and fourth digital analog converters 40, 50, 60 and 70, and first, second, third and fourth terminals 80 It consists of (90), (100) and (110).

The first, second, third, and fourth sources 10, 13, 17, and 20 are sources for supplying a video source or an audio source of an analog signal, and are supplied to the time division modulator 30 through a parallel line. Supply analog signals.

The time division modulator 30 performs pulse code modulation of a digital signal on a video source or an audio source of an analog signal supplied from the first, second, third, and fourth sources 10, 13, 17, and 20. After conversion to data, the data is distributed to each channel and sent to the first, second, third and fourth DACs 40, 50, 60 and 70.

The first, second, third, and fourth DACs 40, 50, 60, and 70 receive the PCM data of the digital signal output by the time division modulator 30 according to their channel, and then again convert the video source of the analog signal. After the conversion to the audio source, the first, second, third, fourth terminals 80, 90, 100, 110 are supplied to.

Accordingly, the first, second, third, and fourth terminals 80, 90, 100, and 110 are connected to their own channels from the first, second, third, and fourth DACs 40, 50, 60, and 70. Video or audio source of analog signal received properly is output through each terminal.

FIG. 3 is a detailed block diagram of the broadcasting device 30 shown in FIG. 2, wherein the first, second, third and fourth analog-to-digital converters (hereinafter, abbreviated as ADCs) 31 and 32 ( 33), the operation of the multiple data distribution device using the time switch composed of the time switch 36 and the channel controller 38 will be described in detail.

First, the first, second, third, and fourth analogue digital converters 31, 32, 33, 34 are obtained from the first, second, third, and fourth sources 10, 13, 17, and 20. The audio source or the video source of the supplied analog signal is received and converted into PCM data of the digital signal, and then transmitted to the time switch 36.

The time switch 36 stores and reads the PCM data of the digital signal transmitted from the first, second, third, and fourth ADCs 31, 32, 33, and 34 in a memory in the time switch 36. Through the time switching is performed, and the channel is changed according to the time switching is transmitted to the first, second, third, fourth terminals 80, 90, 100, 110.

That is, time switching is performed by changing the order of storing and reading data in the memory in the time switch 36, and selected and transmitted for each channel according to the time switch.

At this time, the channel controller 38 time-switches the PCM data of the digital signal transmitted from the first, second, third, and fourth ADCs 31, 32, 33, 34 for each channel by the time switch 36. The first, second, third, and fourth DACs 40, 50, 60, and 70 are controlled for each channel to be transmitted.

The first, second, third, and fourth DACs 40, 50, 60, and 70 convert the PCM data of the digital signal into a video source or an audio source of an analog signal to convert the first, second, third, and fourth terminals (80). 90, 100, 110 are transmitted.

The first, second, third, and fourth terminals 80, 90, 100, and 110 are video of analog signals supplied from the first, second, third, and fourth DACs 40, 50, 60, and 70. A plurality of different broadcast outputs, which are sources or audio sources, may be simultaneously transmitted to a plurality of terminals.

As a result, analog signals and digital signals are converted to each other according to the input source to output different broadcasts simultaneously for a plurality of terminals.

As described above, the present invention described above converts the video source or audio source of the analog signal and the PCM data of the digital signal to each other, and time-switched PCM data are classified and assigned to each channel, thereby simultaneously broadcasting different numbers of terminals. This has the effect of outputting.

Claims (3)

In the apparatus having a plurality of sources and a plurality of terminals, capable of supplying multiple data, A plurality of ADCs which receive video or audio sources of analog signals from the plurality of sources and convert them into pulse code modulated data of digital signals; A time switch that is switched and output in a TDM manner through a process of receiving pulse code modulation data of a digital signal from the plurality of ADCs, storing and reading the pulse code modulation data in a memory; A channel controller which controls the time switch to switch the pulse code modulation data of the digital signal transmitted from the ADC for each channel; A plurality of DACs receiving the PCM data of the digital signal switched by the TDM method for each channel from the time switch and converting the analog signal into a video source or an audio source of an analog signal; And a plurality of terminals receiving video sources or audio sources of analog signals from the plurality of DACs and outputting different broadcasts at the same time. The method of claim 1, And when the plurality of sources operate with video sources of analog signals, the plurality of terminals are converted to a plurality of monitors. The method of claim 1, And when the plurality of sources operate with an audio source of an analog signal, the plurality of terminals are converted into a plurality of speakers.

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