JPS5926706Y2 - Headend equipment for TV audio multiplex broadcasting - Google Patents

Description

[Detailed Description of the Invention] The present invention is a headend device for television audio multiplex broadcasting that allows simultaneous viewing of broadcasts in two languages without modifying a plurality of television receivers connected to a common listening line.

Since the start of TV audio multiplex broadcasting, it is no longer possible to view bilingual TV programs simultaneously broadcast using audio multiplex broadcasting on conventional television receivers.

Therefore, it was necessary to attach a multiplexing tuner with one amplifier and speaker to each conventionally installed TV receiver, or to replace the TV receiver with a multiplexing adapter and prepare a multiplexing adapter. .

For this reason, it would be extremely expensive to install the above-mentioned equipment on all of the television receivers installed in all the guest rooms in hotels, etc. that are frequently used by foreigners.

The purpose of the present invention is to use the existing public listening system to connect the headend device of the present invention to the public listening line without having to install a multiplex tuner with an amplifier and a single speaker to the TV receivers in all guest rooms as described above. It is an object of the present invention to provide a head end device for television audio multiplex broadcasting that allows one set to be provided to selectively view broadcasts in two languages.

Hereinafter, the present invention will be explained based on the illustrated embodiments.

The figure shows a circuit in which a TV audio multiplex broadcast head-end device is attached to a TV common viewing system in hotels, inns, etc.

A television signal received by an antenna 1 is distributed to two circuits by a distributor 2.

One of the output terminals of the distributor 2 is connected to a TV multiplex broadcast tuner 3 with video and audio outputs.

Further, the tuner 3 is connected to a modulator 4 for modulating the output signal of the tuner 3 to a frequency of one of the available channels of the television 7.

The modulator 4 is connected to one input terminal of the mixer 5.

The other output terminal of the distributor 2 is directly connected to the other input terminal of the mixer 5.

The output terminal of the mixer 5 and a television receiver 7 provided in each guest room are connected via a distributor 6.

Since the circuit of the present invention is connected as described above, when you want to watch a bilingual broadcast program on the television receiver in the guest room, for example, assuming that the bilingual broadcast program is being sent on the first channel, The television multiplex broadcast tuner 3 is tuned to the first channel, and the audio is set to be output from the subchannel (where foreign language broadcasts are being sent).

Furthermore, if one of the open channels of the television receiver 7, for example the second channel, is used, if the television receiver 7 is set to the first channel, the first channel will contain the TV image and the main and sub-audio. is received.

With conventional receivers, the subchannel audio cannot be heard.

Next, if you connect/remove the TV receiver 7 to the second channel,
The second channel originally receives the video of the first channel and the audio for the subchannel of the first channel.

Therefore, a person watching television can watch video and Japanese by setting the channel selection knob to the first channel.

If you set the selection knob to the second channel, you can watch videos and foreign languages.

As mentioned above, when you want to watch foreign language TV broadcasts for foreigners in hotels, inns, etc., it is a hassle to install a multiplex broadcast tuner (with one amplifier and speaker) for each TV receiver installed in each guest room. In addition, it is possible to avoid the unnecessary expense of replacing an expensive TV receiver with multiplex protection.

Furthermore, if the channels are programmed in advance to be switched depending on the broadcast program so that the channels are automatically broadcast, costs can be saved and services for customers can be improved.

Currently, hotels and inns charge a fee for video broadcasting systems using the Aki channel, but if such a system is used and the second channel in the example is charged, foreign language broadcasting will be charged. Something happens.

[Brief explanation of the drawing]

The figure shows the invention in block diagram form. 1...Antenna, 2...Distributor, 3.
...TV multiplex broadcast tuner, 4...
- Modulator, 5...Mixer, 6...Distributor, 7...TV receiver.

Claims (1)

[Scope of utility model registration request] A distributor that divides the television signal received by the antenna into two circuits, a mixer directly connected to one of the output terminals of the distributor, and a television video output connected to the other output terminal of the distributor. and a tuner for television multiplex broadcasting with an audio output, and a modulator connected between the tuner and the mixer to modulate the output signal of the tuner to the frequency of one of the empty television channels. Headend equipment for broadcasting.