JPH01103064A - Telecontrol receiver - Google Patents

Abstract

PURPOSE:To allow the sender to recognize the presence of a VTR tape or the propriety of video recording by outputting a reproduction command and a set command for switching channel based on a monitor mode command from the sender to a VTR and giving an audio signal to a telephone line from the VTR. CONSTITUTION:The monitor mode monitoring the state of the VTR is provided. Then a reproduction command and a set command for channel switching are outputted to the VTR based on a monitor mode command from the telecontrol (sender) and an audio signal 620 of the VTR is given to a telephone line 500 from the VTR while switching the channel by a channel switching control means 570. Thus, the presence of a tape or whether or not the video recording is enabled is confirmed by listening to the output content of the audio signal.

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention relates to a telecontrol receiving device that telecontrols household equipment using a telephone line, and particularly relates to a VT
The present invention relates to a telecontrol receiving device for telecontrolling an R (video tape recorder).

(Prior Art) In recent years, the systemization of home appliances has progressed, and at the same time, telecontrol functions have been enhanced. When performing telecontrol using the public telephone network from outside the home, it is common to input telecontrol data using a button telephone. In this case, first a dialing operation is performed to connect the line, a response (voice response) indicating that the line is connected is obtained, and data requesting the start of the telecontrol operation is transmitted. Upon receiving this data, the controlled party requests the transmission of the PIN number,
By sending the correct password from the telecontroller, telecontrol for each device becomes possible.

By the way, until now the controlled devices were air conditioners,
It was mainly used for environmental equipment such as lighting equipment and security equipment such as gas detectors, but it is gradually being used for audio video equipment as well.

FIG. 6 is a block diagram of a conventional telecontrol receiver. This system uses a button signal (hereinafter referred to as P).
B double signal or DTM F (Dual Tone M
This is a receiving device for VTR control that is controlled by a multiple frequency signal. First, call signals from the telephone lines L1 and 12 are detected by the incoming call detection circuit 1, and the detection signals are passed through the inspection input section 2 to the C.
Sent to PU bus 3. CPU bus 3 is data bus 4.
Address bus 5. Consists of control bus 6, CP
It is connected to tJ (central processing S! location) 7. CPU7
is connected to the RAM 8. via the buses 4, 5.6. ROM9. It is connected to timer 10. Based on the above incoming call detection
The PU 7 amplifies the signal from the data bus 4 using the control signal from the l10 (input/output unit) 11 with the amplifier 12 and supplies the amplified signal to the coil of the hook switch relay 13. This turns on the relay 13 and connects the line to automatic fishing. When the lines are connected, the DTMF signals from lines Ll and L2 are transferred to transformer 14. The signal is supplied to a DTMF decoder 17 via a capacitor 15° filter 16. The DTMF decoder 17 decodes the DTMF signal using the control signal from the l1018, and based on this decoded signal, the CPtJ
7 determines the start of telecontrol and keywords, generates a voice signal in the voice synthesis circuit 20 using the control signal from 11019 according to each communication step, and buffer amplifier 21.7. Trance 14. Line L1 via relay 13
．． A voice response is made from L2 to the calling side. Further, CPtJ7 operates the LED drive circuit 23 using the control signal from 11022 based on the decoded signal, and drives the LED (infrared light emitting diode) 24 in accordance with the VTR format to emit light.

Therefore, the light from the LED 24 is transmitted over the air to the light receiving section (control section) of the VTR.

FIG. 7 shows an operation sequence for performing telecontrol using the device configured as shown in FIG. 6.

First, when dialing is performed from a PB telephone that issues a telecontrol command (step S1), the telephone office sends out an incoming call signal several times (step 82), which causes the telecontrol receiving device to detect the ring tone several times. S3), the hook is closed (step S4), and the line between the telecontrol receiver and the PB telephone 1llII is connected (step 85).

Then, the telecontrol receiver synthesizes the answer message (step 86), and sends the synthesized voice message to the PB telephone (step 87). At the next stage, you can enter telecontrol by entering your PIN number. For example, when the recording start is set to 0 and the dial key is input (step S8), the receiving device detects 0 (step 89). Also, when the command execution key is enclosed and the enclosure is input (step 510), the receiving device detects the enclosure (step 511), the recording code is emitted by the LED in the format of an infrared remote control (step 512),
Upon receiving the infrared rays, the VTR starts recording (step 513). At this time, a voice synthesis response is simultaneously performed (step 514), and a synthesized voice message is sent to the transmitting side (step 815).

A series of operations are performed in the above sequence.
There are various ways to use the symbols in the box and the numbers in (9).

By the way, the above-mentioned conventional device transmits commands to the VTR in the air without recognizing the VTR status in advance.
Since the R is placed in a recording state, it is impossible for the sending side to recognize the presence or absence of a VTR tape or whether it is in a recording-enabled state, making it impossible to confirm correct operation in response to control commands or malfunctions. There was a problem.

(Problems to be Solved by the Invention) As mentioned above, in the past, it was impossible for the telecontroller to recognize the presence or absence of a VTR tape and whether or not recording was possible, which caused erroneous operations. The invention is intended to eliminate the above-mentioned problems, and provides a telecontrol receiving device that can accurately recognize the presence or absence of a VTR tape and whether recording is permitted, and can prevent errors in recording onto a VTR tape. The purpose is to provide the following.

[Structure of the Invention] (Means for Solving the Problems) The present invention detects an incoming call, automatically connects the receiving device to the telephone line, and connects the receiving device to the telephone line based on the command from the telecontrol side.
In a telecontrol receiving device for remotely controlling R,
A voice synthesizing means for generating a voice message in response to a control command from the transmitting side, a decoding means for decoding the control command from the transmitting side, and a decoding means for decoding the command from the telecontrol side to determine whether or not it is a monitor mode command. monitor mode determining means; audio switching means for switching the audio signal from the voice synthesizing means to the telephone line to an audio signal from the VTR based on a command from the monitor mode determining means; playback command output means for outputting a command; channel switching control means for sending a channel setting command several times while changing the channel number to the VTR after outputting the playback command; and playback commands from the playback command output means and channel switching control. (Function) In the present invention, a monitor mode is provided for monitoring the status of the VTR, and the telecontrol side Based on the monitor mode command from the transmitting side, playback commands and setting commands for channel switching are output to the VTR, and the audio signal from the VTR is sent from the VTR to the telephone line while switching channels. You can check the presence and whether recording is possible by listening to the output content of the audio signal.

(Example) The present invention will be described below based on the example shown in the drawings.

FIG. 1 is a block diagram showing an embodiment of a telecontrol receiver according to the present invention.

In this figure, a telephone line 500 is connected to an incoming call detection means 510.
and a line connection means 530, and the detection signal generated in the incoming call detection means 510 by the dial operation on the telecontrol side is supplied to the incoming call detection counting/judgment means 520, and the number of detections and the count value are automatically answered. It is determined whether the desired number of times has been reached, and if the predetermined number of times has been reached, the line connecting means 530 is closed, the telephone line 500 is connected to the DTMF decoding means 540, and at the same time the voice switching means 600 is connected to the voice synthesizing means 610. A voice response is possible through the line connection means 530.

The DTMF decoding means 540 receives the DTM from the line 500.
The F signal is decoded and sent to monitor mode determining means 550. Monitor mode determining means 550 detects a monitor mode command for monitoring the VTR tape state, and based on the detection signal, switches audio switching means 600 to terminal 620 for inputting audio signals from the VTR.

In addition, the reproduction command output means 560 outputs a reproduction command according to the instruction execution command following the monitor mode command, and the reproduction command is converted into an infrared remote control format by the LED drive means 580 and transmitted from the LED light emitting means 590 to a VTR (not shown). and causes the VTR to perform playback operations. As a result, the audio signal recorded on the VTR tape is input to the terminal 620 and sent to the telephone line 500 via the audio switching means 600. Furthermore, after outputting the reproduction command, the reproduction command output means 560 activates the channel switching control means 570, and sends the channel setting command several times while changing the channel number at a certain time interval. This allows audio signals corresponding to several channels recorded on the VTR to be sequentially transmitted.
0 to the sending side. After the end of this channel switching control, the voice synthesizing means 610 is driven with a signal indicating the end, and the voice switching means 600 is switched to send a voice message to the line 500. In addition, in the figure, a part 700 indicated by a dashed line is a control part that performs judgment and control, and in the figure, thin solid lines indicate lines through which data for control flows, and thick solid lines indicate voice and tone sounds. It shows the line through which the signal flows.

FIG. 2 is a block diagram showing a specific circuit configuration of FIG. 1.

In this figure, the same parts as those in the circuit shown in Fig. 6 are given the same reference numerals, and in terms of hardware, the circuit in Fig. 6 includes an audio switching means consisting of a relay drive circuit 25 and relays 26 and 27. , audio input terminal 2 connected to relay 26
8, and an audio cable 29 for connecting the terminal 28 and the VTR 30. 31 is LE
This is a terminal for connecting D24 to the LED drive circuit 23. The other parts are the same as the hardware configuration shown in FIG.

FIG. 3 shows a circuit example of the incoming call detection circuit 1 in FIG. 2, and FIG. 4 is a time chart of the circuit operation.

In FIG. 3, a capacitor 210. is connected between telephone lines 11 and 12. Resistance 211. A diode bridge consisting of diodes 2oO to 203 is connected in parallel. A Zener diode 204 and a light emitting diode portion of a photocoupler 205 are connected in series to the diode bridge. One end of the light-receiving transistor section of the photocoupler 205 is connected to the DC power supply +B, and the other end (output end) is connected to the reference potential point via the resistor 206, while the resistor 207 and capacitor 2
08, and its integral output is shaped into a square wave through a Schmitt trigger inverter circuit 209 and output. Here, the incoming signal between lines L1 and 12 is a, and the output signal of the photocoupler 205 is b,
When the integrating circuit output is C and the Schmitt trigger inverter circuit output is d, each signal waveform becomes as shown in FIG.

As shown in FIG. 4, the incoming signal a has a maximum amplitude of 16H2° and 200 V p-11, and is sent out from the telephone office by repeating 1 second on and 2 seconds off. This signal a is TTL-transformed by the diode bridge (200 to 203) and the photocoupler 205.
It is converted into an intermittent signal of the level (for example, 5V), which is then integrated to obtain a signal C, and finally the mark is detected as a 1-second mark and a 2-second space like the Schmitt trigger inverter circuit output d. , is an incoming call detection signal.

Ring the incoming bell during the mark period.

-Next, the operation sequence of FIG. 2 will be explained with reference to FIG.

First, dial on the PB phone (step 5).
21), the central office sends an incoming signal to the telecontrol receiver several times (step 522). This allows the receiving device to detect the bell tone several times in step 3.
23), closes the hook (step 824), and connects the line to the sending side (step 525). After the line is connected, the relay 27 is closed (step 826), the voice synthesizing circuit synthesizes an absent response message (step 527), and the synthesized voice message is sent to the transmitting side through the line (step 828). Next, you can enter telecontrol by inputting your PIN number, etc. Monitor command command (9)
In this case, when the dial key (9) is input (step 529), the receiving side detects the mouth (step 530).
). If the command execution command is a diagram, when the command execution key diagram is input (step 531), the receiving side detects the diagram (step 532), opens the relay 27 (step 333), and closes the relay 26. (Step 53
4) A playback command is sent to the VTR by infrared rays (step 535).

This causes the VTR to operate for playback (step 336).
), the audio output of the VTR is output as audio from the teleconverter 1-roll receiving device to the calling party through the line (
step 537). The receiving device then moves to step 338. In step 838, after a time interval (of the order of several seconds) in which the transmitting side can listen to the sound to some extent (step 339), change the channel value setting (step 840), and send an infrared channel setting command signal to the VTR. (step 541), and channel setting is performed several times (for example, three times for the first channel, the fourth channel, and the sixth channel).

Thereafter, the relay 26 is opened (and the relay 27 is closed at the same time) (step 542), and a message response using the speech synthesis circuit output is started (step 543). by this,
A message is sent to the sending side to prompt the end of the control or the next input (step 544).

In the above sequence, when a reproduction command is given to the VTR, the audio output content from the VTR varies depending on the tape status (1) to (2) of the VTR, as shown in FIG.

(Left below) As shown in the upper table of Table 1, the content of the sound flowing to the transmitting side is determined. For example, if the audio signal received by the tuner of the VTR is output, there is no tape in the VTR or the tape is not recording. If you can see that the tape is in a state where recording is possible (recording prohibited) and the tape playback sound is output, it can be determined that there is a recorded tape in it and the tape is ready for recording, and even if the tape playback sound is silent You can see that there is an unrecorded tape in it and that it is ready for recording.

In the above description, only the part relating to the reproduction of a VTR tape is described.However, it is possible to turn on and off the VTR11 source in the conventional manner while listening to the voice response by conventional telecontrol operation.

[Effects of the Invention] As described above, according to the present invention, when telecontrolling a VTR, it is possible to monitor the state of the VTR in advance. That is, the sending side can recognize the presence or absence of a VTR tape and whether recording is possible or not, and erroneous operations can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the telecontrol receiving device of the present invention, FIG. 2 is a block diagram showing a specific circuit configuration of FIG. 1, and FIG. 3 is a block diagram of the incoming call detection circuit of FIG. 2. A circuit diagram showing an example, FIG. 4 is a waveform diagram explaining the operation of FIG. 3, FIG. 5 is an explanatory diagram explaining the operation sequence of FIG. 2, and FIG. 6 shows a conventional example of a telecontrol receiver. The block diagram, FIG. 7, is an explanatory diagram illustrating the operation sequence of FIG. 6. 500...Telephone line, 510...Incoming call detection means, 5
20... Incoming call detection counting/determination means, 530... Line connection means, 540... DTMF decoding means 550... Monitor mode judgment means 560... Playback command output means, 570... Channel switching control Means, 580...L
ED drive means, 590... Light emitting means, 600... Audio switching means, 6
10...Speech synthesis means, 620...VTR audio signal input terminal. Figure 3

Claims (1)

[Scope of Claims] A line connecting means for detecting an incoming call from a telephone line and connecting a receiving device to the telephone line; a voice synthesizing means for generating a voice message in response to a control command from a transmitting side; a decoding means for decoding a control command; a monitor mode determining means for determining whether or not the command is a monitor mode command for checking the status of the VTR after being decoded by the decoding means; audio switching means for switching the audio signal from the audio synthesis means to the audio signal from the VTR to the telephone line; playback command output means for outputting a playback command to the VTR after determining a monitor mode; after outputting the playback command; Channel switching control means for sending a channel setting command to the VTR multiple times while changing the channel number; and sending the playback command from the playback command output means and the channel setting command from the channel switching control means to the control unit of the VTR. A telecontrol device characterized by comprising a transmitting means.