JPH06311513A - Catv reception terminal equipment - Google Patents

Abstract

PURPOSE:To surely inform the emergency to a viewer by demodulating data relating to an outgoing signal from a reception signal and discriminating whether or not a specific signal is included in the demodulated data so as to send specific information such as occurrence of an emergency in voice. CONSTITUTION:A CATV signal S1 is inputted to an FSK demodulation section 2 and a television signal demodulation section 6, and the demodulation section 2 demodulates outgoing signal data and the demodulation section 6 demodulates a television signal comprising a video signal and an audio signal. The outgoing signal data demodulated by the demodulation section 2 are fed to a microcomputer 3. Then the memory section 3a of the microcomputer 3 stores data relating to a specific signal. A control section 3b allows a discrimination section 3c to discriminate whether or not data relating to the specific signal are included in the demodulated outgoing data based on memory data in the memory section 3a. When the presence of the data relating to the specific signal is confirmed through the discrimination, the control section 3b sends a specific voice signal from a voice generating section 4 to provide a voice signal output from a speaker 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAT that, when a specific signal is received, such as an emergency broadcast such as an earthquake warning, the information corresponding to the specific signal is emitted by voice.
The present invention relates to a V receiving terminal device.

[0002]

2. Description of the Related Art An emergency broadcast regarding a fire, a tsunami, an earthquake or the like will be described below as an example. For example, interactive CATV (Cabl
e Television), in addition to the original television signal, a downlink signal of a predetermined modulation (eg, FSK) for transmitting a control signal from the broadcasting center to the subscriber side and a request signal from the subscriber are broadcast. Predetermined modulation for transmission to the center (eg P
(SK, telephone line, etc.) upstream signal is transmitted. This C
The conventional emergency broadcast in ATV is designed to function as follows. At the time of emergency broadcast, a specific signal is transmitted by the downlink signal. When the receiving device receives this specific signal, it automatically turns on the television receiver and selects a predetermined channel for emergency broadcasting. further,
The dedicated LED is turned on to notify the viewer that an emergency broadcast will be performed.

[0003]

Therefore, the presence of a television receiver is a prerequisite for knowing an emergency alarm. Also,
There is a possibility that the warning by lighting the LED may go unnoticed during sleep at night. The present invention is a unidirectional or bidirectional C
It is an object of the present invention to provide a CATV receiving terminal device which utilizes an ATV downlink signal to audibly output specific information in addition to the occurrence of the emergency and to notify the viewer more reliably.

[0004]

According to the present invention, in the bidirectional or unidirectional CATV, the downlink signal includes data relating to a specific signal only at a specific time and is transmitted, and the CATV provided on the subscriber side is provided. In the receiving terminal device, demodulation means for the data related to the downlink signal, determination means for determining the presence or absence of data related to the specific signal from the data related to the demodulated downlink signal, control means based on the determination means, and the control means And a voice generating means for emitting a predetermined voice on the basis of the above, and a CATV receiving terminal device for emitting a predetermined voice when the specific signal is received is provided.

[0005]

[Operation] Demodulating the data related to the downlink signal from the received signal,
It is determined whether or not the demodulated data includes a specific signal. If a specific signal is included in this determination, a voice corresponding to the specific signal is emitted from a speaker or the like.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENT A CATV according to the present invention will be described below with reference to the drawings.
The receiving terminal device will be described. FIG. 1 shows a CATV according to the present invention.
It is a principal part block diagram which shows one Example of a receiving terminal device.
In the figure, S1 is a CATV signal composed of a television signal and a downlink signal (FSK system), 1 is a CATV receiving terminal device, 2 is a demodulation unit (FSK demodulation unit), 3 is a memory unit 3a,
A microcomputer provided with a controller 3b and a discriminator 3c, 4 is a voice generator, 5 is a speaker, and 6 is a television signal demodulator. It should be noted that in the present embodiment, the downlink signal is converted to FSK (Frequency).
It is assumed that the shift keying) method is used and the data related to the specific signal is transmitted only in the specific time in the bit array forming the downlink signal data by the FSK signal.

Next, the operation of the present invention will be described. C
The ATV signal S1 is input to the FSK demodulation unit 2 and the television signal demodulation unit 6, and the FSK demodulation unit 2 demodulates downlink signal data and the television signal demodulation unit 6 demodulates a television signal composed of a video signal and an audio signal. The downlink signal data demodulated by the FSK demodulation unit 2 is sent to the microcomputer 3 (control unit 3
b). Then, data relating to the specific signal is stored in the memory unit 3a of the microcomputer 3. The control unit 3b causes the discriminating unit 3c to discriminate whether or not the demodulated downlink signal data includes data relating to the specific signal, based on the memory data of the memory unit 3a. When it is confirmed by this determination that the data related to the specific signal exists, the control unit 3b causes the sound generation unit 4 to emit a specific sound signal in response to the control signal, and causes the speaker 5 to output sound.

The voice generating unit 4 is prepared in advance so as to emit a voice signal having a specific content only when the specific signal is received. For example, an audio signal having a specific content (such as that there is an emergency broadcast) is recorded on the cassette tape, and the reproduction operation is started under the control of the control unit 3c.
Alternatively, it may be a card memory that stores specific contents. This specific voice signal is not limited to an alarm such as an earthquake or tsunami, but may be other information. Also, by changing the data of the specific signal transmitted as the downlink signal, it is possible to transmit a plurality of types of information. In this case, the corresponding data is stored in the memory unit 3a and the voice generation unit 4 is also supported. Prepare an audio signal to be used (such as the card memory above). As described above, when the specific signal is transmitted, the content (type) of the specific signal can be discriminated, and the information corresponding thereto can be emitted by voice.

[0009]

As described above, according to the present invention, it is possible to notify the viewer of specific information by voice by utilizing the bidirectional or unidirectional CATV down signal, and the information can be given even during sleep at night. The certainty of transmission can be improved. Further, the present invention can be used not only for emergency warnings such as earthquakes and tsunamis but also for various information transmissions, and can improve the function as a terminal device for CATV reception.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts of an embodiment of a CATV receiving terminal device according to the present invention.

[Explanation of symbols]

 S1 CATV signal 1 CATV receiving terminal device 2 Demodulation unit 3 Microcomputer 3a Memory unit 3b Control unit 3c Discrimination unit 4 Audio generation unit 6 Television signal demodulation unit

Claims (1)

[Claims] 1. A two-way CATV configured to transmit a television broadcast signal, a downlink signal for transmitting a control signal from a broadcast center, and an upstream signal for transmitting a request signal from a subscriber. Or unidirectional CATV
In the above, the CATV receiving terminal device, which transmits the downlink signal including the data relating to the particular signal only at a specific time, is provided to the subscriber side, and the demodulating means for demodulating the data relating to the downlink signal, and the demodulated downlink signal. When the specific signal is received, it is provided with a determining unit for determining the presence / absence of data related to the specific signal from the data according to the above, a control unit based on the determining unit, and a voice generating unit that emits a predetermined voice based on the control unit. C characterized by producing a predetermined voice
ATV receiving terminal device.