JPH07118145B2 - 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. Secondary audio is assigned to foreign languages and explanations, etc. There is primary / secondary audio broadcasting. 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 only on the A mode television, the 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 timer 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 explain the problems as described above, and a terrestrial broadcasting television receiving circuit for receiving terrestrial television broadcasting and this terrestrial broadcasting television receiving. The circuit has a satellite broadcast television receiving circuit that is integrated with the circuit to receive a television broadcast from a satellite, and a video signal selecting circuit that selects a video signal from the terrestrial broadcasting television receiving circuit and the satellite broadcast television receiving circuit. From a magnetic recording / reproducing apparatus for video 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 satellite broadcasting television receiving circuit It has a PCM recording circuit and recording track, an FM modulation recording circuit and a linear track to support the audio program of The audio magnetic recording / reproducing apparatus for recording / reproducing data and a system control circuit for controlling the entire apparatus are provided. The system control circuit includes a CPU for arithmetic control and reception of a satellite broadcast television receiving circuit. An input unit for inputting the conditions for selecting the station and the broadcast reception mode, a memory for storing the conditions input from this input unit, and a start signal for reservation recording according to the time condition input from the input unit. A timer reservation circuit input to the CPU and a display unit for displaying the input condition, the stored condition and the timer reservation content, and the satellite broadcast television receiving circuit was reserved according to the condition stored in the memory. It is controlled so as to switch to a channel, and also to switch the video signal selection circuit and the audio signal selection circuit according to the broadcast receiving circuit for recording. That.

"Operation" Input the program of terrestrial broadcasting or satellite broadcasting from the input section and reserve the recording. The input condition is stored in the memory, and when the time condition is satisfied, the timer reservation circuit inputs a recording start signal to the CPU to start control for recording the program.
Then, the system control circuit controls the satellite broadcasting television receiving circuit to switch to the reserved channel according to the condition stored in the memory, and switches the video signal selecting circuit and the audio signal selecting circuit to the satellite broadcasting television receiving circuit side. The satellite broadcasting is recorded by the video magnetic recording / reproducing apparatus and the audio magnetic recording / reproducing apparatus.

Also, when the recorded signal is reproduced, video and audio are output as in the conventional case. Next, the audio signals are PCM and FM (Hi-Fi
And linear) are separately recorded on tape. Further, when reproducing a tape on which only audio signals are recorded, both audio signals by PCM and audio signals by FM (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 broadcasting television receiving circuit (hereinafter, referred to as BC tuner) for receiving terrestrial television broadcasting, and (2) is built in the BC tuner (1) and is integrated with satellite television broadcasting. It is a satellite broadcasting television receiving circuit (2) (hereinafter referred to as a BS tuner) for receiving.

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 (24) P
It is composed of a CM output terminal (25), an FM voice recording and reproducing process section (26) (27), a recording and reproducing amplifier (28), a voice head (29), and an FM output terminal (30).

The system control circuit (13) includes an arithmetic control CPU (31), R
An OM (32), an input section (33) for designating a channel combination mode of a receiving station and an audio signal, a RAM (34) for storing an input condition, and a reservation record according to a time condition input from the input section. A timer reservation circuit (35) for inputting a start signal to the CPU, a display section (36) for displaying input conditions, storage conditions and timer reservation, and an I / O circuit (37) for input / output to / from an external circuit.

As shown in FIG. 2, the video signal selection circuit (14) has a BC
A first switch (38) having a tuner terminal (BC) and a BS tuner (BS), a Hi-Fi terminal (Hi-Fi) and a PCM terminal (P
And a second switch (39) having a CM). The audio signal selection circuit (20) has third, fourth and fifth switches (40) (41) each having a BC tuner terminal (BC), a television audio terminal (TV sound) and an independent audio terminal (independent sound). (42)
Consists of.

The operation of the above configuration will be described.

A command signal from the input section (33) of the system control circuit (13) is output via the CPU (31) and the input / output I / O circuit (37). Then, the BC tuner (1), the BS tuner (2), the video signal selection circuit (14), and the audio signal selection circuit (20) are controlled by the command.

When a program with satellite broadcast is reserved and recorded, the broadcast type (satellite broadcast) of the desired program, the receiving station, and the start / end time conditions are input from the input unit (33). Then, the broadcast type and the condition of the receiving station are stored in the RAM (34), and the conditions of the start / end time are stored in the timer reservation circuit (35) and displayed on the display unit (36). Then, at a predetermined time, a signal is output from the timer reservation circuit (35) to the CPU (31),
A system control circuit (13) starts control for recording a program.

The CPU (31) is connected to the BS tuner (2) via the I / O circuit (37).
The condition of the receiving station is output to and the start of satellite broadcasting reception is instructed. Then, the BS tuner (2) starts receiving the command from the receiving station from the CPU (31), and sends the video signal to the video signal selection circuit (14) and the TV audio signal and the independent audio to the audio signal selection circuit (20). Output a signal.

On the other hand, the CPU (31) inputs control signals to the video signal selection circuit (14) and the audio signal selection circuit (20) via the I / O circuit (37) to control to record satellite broadcast. . That is, in the video signal selection circuit (14), the first switch (3
Select the BS tuner terminal (BS) with 8) and select the Hi-Fi terminal (Hi-Fi) with the second switch (39) to transfer the video signal from the BS tuner (2) to the video recording process section (15). ), A recording amplifier (17), and a head (18) to record on a tape.

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, the fourth and fifth switches (41) (42)
Select the TV audio terminal (TV sound) or independent audio terminal (independent sound) with, and FM-modulate the TV audio signal or the independent audio signal from the BS tuner (2) by the FM audio recording process section (21) and record amplifier. (28), Head (29) to record on tape.

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).

[Advantages of the Invention] Satellite broadcasting has an independent audio signal of two channels in addition to a video signal and a television audio signal of two channels. However, the present invention, as described above, uses a satellite for a magnetic recording and reproducing apparatus for audio. Since it has a PCM recording circuit, a recording track, an FM modulation recording circuit, and a linear track for supporting the audio program of the broadcast television receiving circuit, the TV audio and the independent audio of the satellite broadcasting same channel audio program are independent from each other. It can be recorded and played back, and at the time of playback, TV audio, independent audio, main-sub audio, etc. can be selected. Also,
It is possible to input a recording reservation condition for time shift from the input unit, store the contents, and record a specified satellite broadcast program when the condition is satisfied.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a magnetic recording / reproducing apparatus according to the present invention, and FIG. 2 is a concrete circuit diagram of a video / audio signal selection circuit. (1) ... Terrestrial broadcast television receiver circuit (BC tuner), (2) ... Satellite broadcast television receiver circuit (BS tuner), (5) ... Magnetic recording and reproducing device for video, (12) ... Magnetic for audio Recording / playback device, (13) …… System control circuit.

Claims (1)

[Claims] 1. A terrestrial broadcast television receiving circuit for receiving a terrestrial television broadcast, a satellite broadcast television receiving circuit built in the terrestrial broadcast television receiving circuit for receiving a television broadcast from a satellite, and these. It has a video signal selection circuit for selecting a video signal from the terrestrial broadcasting television receiving circuit and the satellite broadcasting television receiving circuit,
A video magnetic recording / reproducing apparatus for 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, and a satellite broadcasting television receiving circuit In order to correspond to the sound program of, the PCM recording circuit and the recording track connected to the TV sound signal output of the BS tuner through one output of the sound signal selection circuit at the time of recording the satellite broadcast signal, and the satellite broadcast signal. At the time of recording, it has an FM modulation recording circuit and a linear track connected to the independent audio signal output of the BS tuner through the other output of the audio signal selection circuit, and outputs an audio signal of either terrestrial broadcasting or satellite broadcasting. It is equipped with an audio magnetic recording / reproducing apparatus for recording / reproducing, and a system control circuit for controlling the entire apparatus. CPU, an input section for inputting conditions for selecting a receiving station and a broadcast receiving mode of a satellite broadcast television receiving circuit, a memory for storing the conditions input from this input section, and an input from the input section Schedule recording start signal according to the specified time conditions
A timer reservation circuit input to the CPU and a display unit for displaying the input condition, the stored condition and the timer reservation content, and the satellite broadcast television receiving circuit was reserved according to the condition stored in the memory. It controls to switch to a channel, and also switches the video signal selection circuit and the audio signal selection circuit according to the receiving circuit of the broadcast for recording, and selects the TV sound and the independent sound of the sound program of the same channel of satellite broadcasting. A magnetic recording / reproducing apparatus characterized in that the PCM recording circuit and the FM modulation recording circuit are independently recorded and reproduced.