JPH07118147B2 - Magnetic recording / reproducing device - Google Patents

Description

The present invention relates to a magnetic recording / reproducing apparatus capable of recording / reproducing terrestrial broadcasting and satellite broadcasting.

"Prior art" With the start of SHF band satellite broadcasting using geostationary satellites, satellite broadcasting can be received even on ordinary TV receivers by adding a parabolic antenna and adapter. . In this satellite broadcasting, the audio signal is converted into a PCM signal so that high quality reproduced audio can be obtained. The A mode having four channels with a frequency band of 15 kHz and the B mode having two channels with a frequency band of 20 kHz. There are two modes.

Furthermore, there are TV audio, independent audio, and main-sub audio depending on how the channels are assigned. Assuming that each channel is the first, second, third, and fourth channels, for example, in the case of A mode, in addition to the realistic 4-channel stereo broadcast in which all the first to fourth channels are assigned, And assign the second and second channels to stereo TV audio,
Broadcasts in which the third and fourth channels are assigned as stereo independent voices to the second voice or BGM, or the first or third channel is assigned to the monaural main voice, and the second or fourth channel is assigned to the monaural voice. There are primary and secondary audio broadcasts assigned to foreign languages and commentary as secondary audio. In the B mode, a stereo music program that emphasizes sound quality using a wide band is mainly broadcast. Therefore, unlike in the A mode described above, channels are rarely divided, but broadcasting is performed with main and sub audio. You can also The channel combination mode of audio signals can be set with a BS (broad satellite: satellite broadcasting) tuner.

An example of the channel combination mode of this audio signal will be given.

(1) In the case of 4-channel stereo broadcasting in A mode Play back in 4-channel stereo.

Play only the front two channels on the first and second channels.

The front two channels and the rear two channels are combined and reproduced on the first and second channels.

(2) In the case of broadcasting by A mode TV sound and independent sound TV sound is reproduced on the first and second channels.

Independent audio is played on the first and second channels.

The TV sound and the independent sound are combined and reproduced on the first and second channels.

Television sound is reproduced on the first and second channels, and independent sound is reproduced on the third and fourth channels.

(3) In the case of broadcasting by A mode television sound only Television sound is reproduced on the first and second channels.

(4) In the case of A-mode and B-mode main-sub audio broadcasting, the main audio is reproduced on the first and second channels.

The sub audio is reproduced on the first and second channels.

The main voice and the sub voice are synthesized and reproduced on the first and second channels.

(5) In the case of B mode stereo broadcasting, it is played back in 2 channel stereo.

Note that when playing back only on the first and second channels, the third
And the same signal may be reproduced on the fourth channel. When the first and second channels are stereo audio signals, they may be combined and reproduced as monaural audio.

In a conventional magnetic recording / reproducing apparatus compatible with satellite broadcasting, when a broadcasting station is selected by a BS tuner, a video signal and an audio signal output from the BS tuner are recorded. However, for audio signals, the BS tuner decodes satellite broadcast audio signals sent as PCM signals into 4-channel or 2-channel audio signals according to the broadcast mode (A or B), but magnetic recording is performed. The channel combination mode of the audio signals output to the playback device was determined by the combination set by the BS tuner.

"Problems to be solved by the invention" Since the conventional magnetic recording / reproducing apparatus does not have a built-in BS tuner, control of satellite broadcast recording by selecting the channel combination mode of the receiving station and the audio signal from the magnetic recording / reproducing apparatus side. I can't. In other words, when attempting to make time reservations for multiple programs continuously with tire recording, it is limited to the channel combination mode of the receiving station and audio signal that was initially set, and audio recording and playback of various combinations cannot be performed, and I could not take advantage of satellite broadcasting.

It is an object of the present invention to obtain a magnetic recording / reproducing device capable of reproducing an audio signal in any channel combination mode when reproducing a program.

"Means for Solving Problems" The present invention has been made to solve the above-mentioned problems, and includes a terrestrial broadcasting television receiving circuit for receiving terrestrial television broadcasting, and this terrestrial broadcasting television receiving. A satellite broadcast television receiving circuit for receiving television broadcast from a satellite provided outside the device housing the circuit, and a video signal selecting circuit for selecting a video signal from the terrestrial broadcast television receiving circuit and the satellite broadcast television receiving circuit. A video magnetic recording / reproducing apparatus for recording / reproducing any video signal, an audio signal selecting circuit for selecting an audio signal from the terrestrial broadcasting television receiving circuit and the satellite broadcasting television receiving circuit, and a PCM recording A magnetic recording / reproducing apparatus for audio having two magnetic recording / reproducing systems, a reproducing system and an FM recording / reproducing system, for recording / reproducing an audio signal of either terrestrial broadcasting or satellite broadcasting. A system control circuit for controlling the entire apparatus, wherein the satellite broadcast television receiving circuit receives a satellite broadcast tuner and a control signal sent from the system control circuit via a serial or parallel transmission line. And a control unit for decoding the received signal and controlling the satellite broadcast tuner unit. The system control circuit includes a CPU for arithmetic control, a receiving station and a broadcast receiving mode of the satellite broadcast television receiving circuit. An input unit for inputting the conditions for selecting, a memory for storing the conditions input from the input unit, a display unit for displaying the input conditions and the stored conditions, and the satellite broadcast. A satellite broadcasting television receiving circuit is reserved according to the conditions stored in the memory, which comprises a transmitting portion for transmitting a control signal for controlling the television receiving circuit. Control so as to switch to a receiving station, and switch the video signal selecting circuit and the audio signal selecting circuit in accordance with the receiving circuit of the broadcast for recording, and the control signal by the transmission line is the power source of the satellite broadcasting television receiving circuit. Power on / off, which is a non-forced command to turn on / off, a force command on, which is a force command to prevent the satellite broadcast television receiving circuit from accepting anything other than a force command Forced command release that is a forced command to be accepted, direct reception station command command that is a non-forced command that directly selects and selects the receiving station of the satellite broadcasting TV receiving circuit, and receiving station of the satellite broadcasting TV receiving circuit is set up. Or the receiving station command up / down command, which is a non-forced command to shift to the receiving station below, A television voice command which is a non-forced command to switch the voice reproduced by the television receiving circuit to a television voice, an independent voice command which is a non-forced command which switches the voice reproduced by the satellite broadcast television receiving circuit to an independent voice, the satellite broadcast television reception It has nine commands, a main-sub voice command which is a non-compulsory command for switching the voice reproduced by the circuit to the main-sub voice,
At the start of recording, the power is turned on, other commands, and the forced command is turned on.
Other commands including power-off are sent in order, power-on other than recording, other commands are sent, and only power-off command is sent at the end, and forced command-on is performed at the control signal receiver. When this command is received, this command is given the highest priority, commands other than the forced command are not accepted, and when a forced command cancellation is received, the normal routine that accepts commands other than the forced command is returned.

"Operation" Input the conditions of a desired program of terrestrial broadcasting or satellite broadcasting from the input section to reserve recording. The input condition is stored in the memory and the control for recording the program is started when the time condition is satisfied. Then, the system control circuit outputs a control signal (command) necessary for recording the reserved program in the terrestrial broadcasting television receiving circuit or the satellite broadcasting television receiving circuit according to the condition stored in the memory.

This command includes a power-on to turn on the power of the BS tuner, a power-off to turn off the power as well, and a command other than the command release other than forcibly canceling the forced command. Forced command release to return to normal routine that accepts commands other than cancellation, selection of receiving station to select receiving station of BS tuner section, TV audio with BS tuner audio output as TV audio, and independent output of BS tuner audio output Independent voice, and L and R independently output 9 commands of main-sub voice. These commands are received by the receiving section of the satellite broadcast television receiving circuit, and are decoded to control the tuner to select the target broadcasting station.

On the other hand, the video signal selection circuit and the audio signal selection circuit are switched to the terrestrial broadcasting television receiving circuit side for terrestrial broadcasting program recording and to the satellite broadcasting television receiving circuit side for satellite broadcasting program recording. The program is recorded by the magnetic recording / reproducing apparatus for audio and the magnetic recording / reproducing apparatus for audio.

The video signal and the Hi-Fi audio signal are recorded on the video tape in the magnetic recording / reproducing circuit for the video signal. Also, when the recorded video signal is reproduced, video and audio are output as in the conventional case. Next, in the audio magnetic recording / reproducing circuit, both are separately recorded on the tape by the two magnetic recording / reproducing systems of the PCM recording / reproducing system and the FM recording (Hi-Fi and linear) reproducing system. When reproducing the recorded audio signal, both the audio signal by PCM recording and the audio signal by FM recording (Hi-Fi and linear) are reproduced and selectively output.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, (1) is a terrestrial broadcast television receiving circuit (hereinafter, referred to as a BC tuner) for receiving a terrestrial television broadcast, and (2) is provided outside the device accommodating the BC tuner (1), Satellite broadcasting TV receiving circuit for receiving satellite TV broadcasting, BS tuner (2a) for receiving satellite broadcasting, receiving unit (2c) for receiving control signal, decoding reception control signal at this receiving unit (2c) Shi said BS tuner (2a)
The control unit (2b) for controlling the.

The video signal output terminals (3) and (4) of the BC tuner (1) and the BS tuner (2) are connected to a video magnetic recording / reproducing device (5) for recording / reproducing the video signal. Also, the audio signal output terminal (6) of the BC tuner (1)
(7) and the TV audio signal output terminals (8) and (9) and the independent audio signal output terminals (10) and (11) of the BS tuner (2)
Is coupled to an audio magnetic recording / reproducing device (12).

Further, (13) is a system control circuit for controlling the entire apparatus.

The video magnetic recording / reproducing apparatus (5) includes a video signal selection circuit (14), a video recording and reproducing process section (15) (1).
6), recording and playback amplifier (17), video head (1
8), video output terminal (19).

The audio magnetic recording / reproducing apparatus (12) includes an audio signal selection circuit (20), a PCM recording and reproducing process section (21) (2).
2), recording and playback amplifier (23), voice head (2
4), PCM output terminal (25), FM voice recording and playback process section (26) (27), recording and playback amplifier (28), voice head (29), FM output terminal (30).

The system control circuit (13) includes an arithmetic control CPU (31), R
OM (32), input unit (33) for specifying the channel combination mode of reception and audio signals, RAM (34) for storing input conditions, start of reservation recording according to the time condition input from the input unit Timer reservation circuit (35) for inputting signals to CPU, display section (36) for displaying input conditions, storage conditions and timer reservation, I / O circuit for input / output to external circuit (37), satellite broadcasting TV receiver circuit (2)
It is composed of a transmission section (37a) for transmitting a control signal for controlling, and is coupled to the reception section (2c) via a serial or parallel transmission line (37b).

As shown in FIG. 2, the video signal selection circuit (14) has a BC
It is composed of a first switch (38) having a tuner terminal (BC) and a BS tuner terminal (BS), and a second switch (39) having a Hi-Fi terminal (Hi-Fi) and a PCM terminal (PCM). .
The audio signal selection circuit (20) is a BC tuner terminal (BC),
Third, fourth and fifth switches (40) (41) each having a TV audio terminal (TV sound) and an independent audio terminal (independent sound)
It consists of (42).

The operation of the above configuration will be described.

When conditions such as the reception and start / end time of the desired program are input from the input section (33) of the system control circuit (13), the CPU
These conditions are stored in the RAM (34) via (31). Then, when the condition of the start time is satisfied, a signal is output from the timer reservation circuit (35) to the CPU (31), and a control signal (command) necessary for recording a designated program is sent to the CPU (3
1) Input / output I / O circuit (37), transmitter (37a), serial or parallel transmission line (37b), and video signal selection circuit via I / O circuit (37) Control signals are sent to the audio signal selection circuit (20) (14). The control signal transmitted from the transmitter (37a) is received by the receiver (2c), decodes the received signal and sends it to the controller (2b), and the controller (2b) uses the BS tuner (2a). Is controlled.

Then, the BS tuner section (2a) starts reception of the designated broadcasting station, and outputs a video signal to the video signal selection circuit (14) and an audio signal to the audio signal selection circuit (20).

There are nine types of commands for controlling the BS tuner section (2a) as follows.

(1) Power on the BS tuner (2a) "power on" (non-forced command) (2) Similarly "power off" (non-forced command) (3) After that, "forced command (on and release)""Forced command on" that prioritizes satellite broadcasting recording without accepting commands other than "(Used when the tuner status such as the receiving station does not change during recording) (4) After that," Forced command Return to the normal routine that accepts commands other than (ON and release) "Forced command release" (forced command) (5) "Direct receiving station command" (non-forced command) that commands the receiving station of the BS tuner (2a) (6) "Receive station command up / down" (non-compulsory command) that also raises / decreases the position of the receiving station (7) "TV that uses the audio output of the BS tuner (2a) in A mode as TV audio" (Voice) (non-forced command) (8) Similarly, "independent voice" (non-forced command) which is also independent voice (9) "main-sub" (non-forced command) in which L and R voices are independently output The transmission order of the command signals (1) to (9) of the types is as follows.

(A) At the start of recording, a command such as (1) → (5) is sent in the order of → (3).

FIG. 3 shows the transmission unit (37a) to the reception unit (2
The command signal to c) and the waveform example of the recording mode are shown. The command signal includes a "header" indicating the beginning of the command, a "device code" indicating which device the command is for, and a "command" indicating the command. There is a code.
The power of the BS tuner (2a) is turned on by the command of "power on", and the reception is switched to a predetermined broadcasting station by the command of "direct receiving station command". Then, the command of "forced command on" is made not to accept any command other than "forced command release", and the recording of the program is started by the video magnetic recording / reproducing apparatus and the audio magnetic recording / reproducing apparatus.

(B) At the end of recording, other commands including (4) → (2) are sent in order.

When the condition for the recording end time is met, a signal is output from the timer reservation circuit (35) to the CPU (31), and the video magnetic recording / reproducing apparatus and audio magnetic recording / reproducing apparatus end recording. When recording is completed, use the command "forced command release" to execute a normal routine, that is, "forced command release".
"Power off" by accepting commands other than
Turn off the power of the BS tuner (2a).

(C) In modes other than recording (1) → Send in the order of other commands.

(D) At the end of use of the signal from the receiver, only (2) is sent out.

Next, switching of the first to fifth switches (38) to (42) will be described. When making a reservation recording of a program with terrestrial broadcasting, the CPU (31) inputs a control signal to the video signal selection circuit (14) and the audio signal selection circuit (20) via the I / O circuit (37). Control to record the broadcast. That is,
In the video signal selection circuit (14), use the first switch (38)
Select the BC tuner terminal (BC) and select the second switch (39).
The Hi-Fi terminal (Hi-Fi) is selected by and the video signal from the BC tuner (1) is recorded on the tape via the video recording process section (15), recording amplifier (17) and head (18).

In the audio magnetic recording / reproducing apparatus (12), the third switch (4
0) selects the BC tuner terminal (BC), encodes the audio signal from the BC tuner (1) into a PCM signal by the PCM recording process unit (21), and passes through the recording amplifier (23) and head (24) to tape. To record. Also, the fourth and fifth
Select the BC tuner terminal (BC) with the switches (41) (42), FM-modulate the audio signal from the BC tuner (1) by the FM audio recording process section (21), and record amplifier (28), head (29) ) And record it on the tape.

CPU (31) to reserve and record programs with satellite broadcasting
Controls a video signal selection circuit (14) and an audio signal selection circuit (20) via an I / O circuit (37) so as to record a satellite broadcast. That is, in the video signal selection circuit (14), the first switch (38) selects the BS tuner terminal (BS), and the second switch (39) selects the Hi-Fi terminal (Hi-Fi). A video signal from the BS tuner (2) is recorded on a tape via a video recording process section (15), a recording amplifier (17) and a head (18).

In the audio magnetic recording / reproducing apparatus (12), the third switch (4
Select the TV audio terminal (TV sound) or independent audio terminal (independent sound) with 0) and record the TV audio signal or the independent audio signal from the BS tuner (2) by PCM modulation with the PCM recording process unit (21). The tape is recorded via the amplifier (23) and the head (24).

Also, select the TV audio terminal (TV sound) or independent audio terminal (independent sound) with the 4th and 5th switches (41) (42) to select the TV audio signal or the independent audio signal from the BS tuner (2). FM
FM is modulated by a voice recording process section (21) and recorded on a tape via a recording amplifier (28) and a head (29).

In addition, when the PCM terminal (PCM) is selected by the second switch (39), regardless of which the first switch (38) selects.
Only PCM audio is recorded on the video tape.

The video signal recorded as described above is reproduced by the amplifier (1
7), video playback process section (16), video output terminal (19)
It is output from and played. For the audio signal, regardless of whether you select PCM, Hi-Fi, or linear, each playback amplifier (2
3) or (28), regeneration process section (22) or (27)
And then output and played.

Although the timer reservation circuit (35) is composed of an independent circuit in the above embodiment, it may be composed of a part of the ROM (32) and a part of the RAM (34).

In the above-described embodiment, the "device code" included in the command signal indicates which device the command is for (BC tuner, BS tuner, etc.).
The command may be output only to the device to be controlled. However, in this case, a hardware gate circuit is required.

"Effects of the Invention" Since the present invention is configured as described above, it is possible to record and reproduce not only terrestrial television broadcasting but also satellite television broadcasting. In particular, satellite broadcasting has a 2-channel independent audio signal in addition to a video signal and 2-channel television audio signal. The audio magnetic recording / reproducing apparatus has two systems, a PCM recording / reproducing system and an FM recording / reproducing system. Since it has a magnetic recording / reproducing system, all audio signals can be recorded, and it is possible to select TV audio, independent audio, main / sub audio, etc. during reproduction.

In addition, satellite broadcasting is "powered on" via the transmission line,
"Power off", "Forced command on", "Same release",
"Direct receiving station selection", "Receiving station command up / down",
The BS tuner section can be effectively controlled by a combination of nine command signals of "television voice", "independent voice", and "main-sub voice". That is, in the BS tuner provided outside,
There is a possibility that the receiving status of the receiving station etc. may be changed by the operating means provided in the BS tuner itself, and the operation from a system different from the system control circuit using "forced command on" and "release same" By prohibiting and permitting, there is an effect that it can be effectively controlled.

In addition, "TV sound", "independent sound",
By the command of "main-sub audio", one or both of the TV audio and the independent audio, or one or both of the main-auxiliary audio can be selectively recorded.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a magnetic recording / reproducing apparatus according to the present invention, FIG. 2 is a concrete circuit diagram of a video / audio signal selection circuit, and FIG. 3 is recording and command. It is an operation waveform diagram of a signal. (1) …… terrestrial broadcast television receiver circuit (BC tuner), (2) …… satellite broadcast television receiver circuit, (2a) …… BS tuner, (2b) …… control unit, (2c) …… receiver unit, (5) ... magnetic recording and reproducing device for video, (12) ... magnetic recording and reproducing device for audio, (13) ... system control circuit.

Claims (1)

[Claims] 1. A terrestrial broadcast television receiving circuit for receiving a terrestrial television broadcast, and a satellite broadcast television receiving for receiving a television broadcast from a satellite provided outside a device accommodating the terrestrial broadcast television receiving circuit. A circuit and a video signal selection circuit for selecting a video signal from the terrestrial broadcast television receiving circuit and the satellite broadcast television receiving circuit,
A magnetic recording / reproducing apparatus for video recording / reproducing any one of the video signals, an audio signal selecting circuit for selecting an audio signal from the terrestrial broadcasting television receiving circuit and the satellite broadcasting television receiving circuit, a PCM recording / reproducing system and FM. An audio magnetic recording / reproducing apparatus for recording / reproducing an audio signal of either terrestrial broadcasting or satellite broadcasting, and a system control for controlling the entire apparatus, which has two magnetic recording / reproducing systems including a recording / reproducing system. The satellite broadcast television receiving circuit comprises a satellite broadcast tuner, a receiver for receiving a control signal sent from the system control circuit via a serial or parallel transmission line, and a received signal. The system control circuit decodes and controls the satellite broadcast tuner unit. An input unit for inputting a condition for mode selection, and a display unit for displaying a memory for storing the input condition from the input unit, the input conditions and storage conditions,
And a control unit for transmitting a control signal for controlling the satellite broadcast television receiving circuit, controlling the satellite broadcast television receiving circuit to switch to a reserved receiving station according to the conditions stored in the memory, and The video signal selection circuit and the audio signal selection circuit are switched in accordance with the receiving circuit of the broadcast for recording, and the control signal by the transmission line is a non-compulsory command for turning on / off the power of the satellite broadcast television receiving circuit. ON, OFF, forced command which is a compulsory command that the satellite broadcasting TV receiving circuit does not accept other than compulsory commands ON, forced command which is a compulsory command which allows the satellite broadcasting TV receiving circuit to accept other than compulsory commands , A non-mandatory command that directly selects and selects the receiving station of the satellite television receiving circuit. Transfected receiving station command command, the satellite television receiver station command up a non-compulsory command to shift to a receiving station up or down the receiving station of the receiving circuit
/ down command, a TV voice command that is a non-forced command that switches the voice that the satellite broadcast television reception circuit plays back to TV voice, an independent voice that is a non-forced command that switches the voice that the satellite broadcast TV reception circuit plays back to independent voice There are nine commands, a main-sub audio command which is a non-compulsory command for switching the sound reproduced by the satellite broadcasting television receiving circuit to a main-sub audio, and a power-on at the start of recording, other commands, and a compulsory command on. In the order of, at the end of recording, forced command release,
Other commands including power-off are sent in order, power-on other than recording, other commands are sent, and only power-off command is sent at the end, and forced command-on is performed at the control signal receiver. Is received, the command other than the forced command is not accepted, and when the forced command release is received, the normal recording routine for accepting the command other than the forced command is returned to.