JPH05282737A - Magnetic recorder - Google Patents

Abstract

PURPOSE:To obtain the device capable of automatically selecting and recording a part of contents specified arbitrarily by the user out of a video sound source to be served for recording. CONSTITUTION:Data of a sound signal in a fixed time is stored in memories 13 and 14. Data specifically stored in the memories 13 and 14 in advance by the user and data of a sound signal to be inputted are collated in turn by a comparator 16, and the commencement and interruption of recording is controlled by a microcomputer 17 for controlling a system of a VTR to be supplied with an output signal of this comparator 16. By this method, desired contents specified autonomically by the user can be recorded without depending upon a discriminating signal of bilingual or stero broadcasting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording device capable of recording information on a magnetic recording medium by selecting it from arbitrary video / audio sources or TV broadcast program contents.

[0002]

2. Description of the Related Art Conventionally, when a user records desired contents from a video / audio source on a VTR, the user can repeatedly monitor the video and audio while repeatedly suspending and resuming the recording to obtain a desired content. The contents were recorded on magnetic tape.

In addition, during bilingual broadcasting (or stereo broadcasting), a detection signal that the broadcasting is bilingual (or stereo) is used to monitor the signal during recording and automatically. There was a method to start and stop the recording of information on magnetic tape. That is, for example, in order to remove and record the commercial part (generally stereo broadcast) included in a bilingual broadcast movie program, the bilingual identification signal of the broadcast is monitored, and the signal is interrupted during the commercial broadcast. There was a system in which the recording was temporarily stopped, and the broadcast content was restarted again, and the recording was started when the signal was received.

FIG. 4 shows an example of a magnetic recording / reproducing apparatus including a conventional magnetic recording apparatus. In FIG. 4, 1 is an antenna,
2 is a tuner section, 3 is an audio multiplex demodulation section, 4 and 5 are external input terminals, 6 and 7 are switches, 8 is a video signal processing circuit,
Reference numeral 9 is an audio signal processing circuit, 10 is a video head, 11 is an audio head, 12 is a magnetic tape, 17 is a microcomputer (hereinafter referred to as a microcomputer), 18 is a key matrix portion, and 19 and 20 are recording and reproducing switches. ..

Next, the main part of the operation of the conventional device will be described.
From the antenna 1, a television broadcast signal is input to the tuner unit 2, and a voice multiplexed signal is input. The sub-channel is FM-modulated with 31.5KHz, which is about twice the horizontal synchronizing frequency, as the carrier. In the case of bilingual broadcasting, the main channel is Japanese, in which the sub-channel is foreign language, and in the case of stereo broadcasting the main channel The left and right sum signals and the sub-channel are difference signals.

As the two kinds of identification signals, a carrier having a frequency of 55.125 KHz which is 3.5 times the horizontal synchronizing signal, 98.25 Hz for stereo broadcasting and 922.5 Hz for bilingual broadcasting. It is FM modulated. Therefore, the audio multiplex demodulator 3 discriminates the stereo / bilingual broadcasting from these identification signals and outputs the identification signals.

Here, the bilingual broadcast identification signal from the audio multiplex demodulation unit 3 is named BI and is a signal which becomes "H" level (hereinafter referred to as "H") during bilingual broadcasting. This is input to the microcomputer 17, and the bilingual broadcasting is monitored by this microcomputer 17. Further, the microcomputer 17 is a part of a microcomputer for controlling the VTR system, and in the key matrix section 18, the recording switch 19,
The reproduction switch 20 is pressed to control recording / reproduction.

In the case of a bilingual broadcast of a movie or the like, an audio multiplex signal from a broadcasting station outputs a bilingual identification signal, so that the BI signal is input as "H" to the microcomputer 17. Also, during commercials, it becomes a stereo or monaural broadcast, the bilingual identification signal is interrupted,
The BI signal to the microcomputer 17 is at the “L” level (hereinafter,
It is called "L". ). Therefore, by monitoring "H" and "L" of the BI signal and controlling the recording, the commercial portion can be removed from the recording.

As a program in the timer recording mode, the presence or absence of a BI signal is discriminated, and when the end time comes, recording is interrupted, and the BI signal during timer recording is the microcomputer 17
When it is input to, the BI signal is monitored to become “L” next time, recording is interrupted when the BI signal becomes “L”, and B is again recorded.
Wait until the I signal becomes "H", restart recording after becoming "H". Due to the above, when the bilingual broadcasting is interrupted by commercial during timer recording, the commercial part can be removed from the recording. is there.

[0010]

Since the conventional apparatus is configured as described above, since it is controlled by the identification signal of the bilingual or stereo broadcast added by the broadcasting station, the desired program content can be obtained. When both the commercial and the bilingual (or stereo) broadcast, there was a problem that the commercial part could not be removed and recorded. For example, when the program is a stereo broadcast and the commercial is also a stereo broadcast, or when the commercial insertion portion in a bilingual broadcast movie program is not a stereo broadcast and the program is a bilingual broadcast, the two cannot be separated.

Further, in the case of editing and recording the magnetic tape software by the connection using the external input terminal such as the video,
There is a problem that the above identification signal cannot be used.

The present invention has been made to solve the above problems, and an object thereof is to obtain a magnetic recording device capable of recording arbitrary program information designated by a user.

[0013]

A magnetic recording apparatus according to the present invention allows data program information to be registered in a memory in advance so as to specify an arbitrary program part and freely record or remove the specified part. It is a thing.

[0014]

In the magnetic recording apparatus according to the present invention, the recording is started or paused when it coincides with the audio or video signal arbitrarily designated, so that desired contents can be freely selected from the broadcast program and recorded on the magnetic tape. You can do it.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals.

Example 1. In FIG. 1, 1 is an antenna,
2 is a tuner unit whose input unit is connected to the antenna 1, 3
Is an audio multiplex demodulator for demodulating an audio multiplex signal from the tuner unit 2, 4 and 5 are external input terminals for inputting video and audio signals from the outside, and 6 is a video signal from the tuner unit 2 and an external input terminal 4 Is a switch for switching and outputting the video signal from, and 7 is a switch for switching and outputting the audio signal from the audio multiplex demodulator 3 and the audio signal from the external input terminal 5.

Reference numeral 8 is a video signal processing circuit for processing the video signal from the switch 6 for recording, 9 is an audio signal processing circuit for processing the audio signal from the switch 7 for recording, and 10 is an output of the video signal processing circuit 8. Video head connected to the terminal,
Reference numeral 11 is an audio head connected to the output terminal of the audio signal processing circuit 9, and 12 is a magnetic tape run by a drive mechanism (not shown).

Reference numerals 13 and 14 are memories, and 15 is a switch 7.
An A / D converter for converting an analog voice signal from the A / D converter into digital voice signal data, 16 compares the voice signal data stored in advance in the memories 13 and 14 with the output of the A / D converter 15, and It is a comparator that outputs the comparison result to the microcomputer 17. Reference numeral 18 is a key matrix portion connected to the microcomputer 17, 19 is a recording switch thereof, and 20 is a reproduction switch thereof. It should be noted that the microcomputer 17 can control a VTR system such as a tape running mechanism to control recording start and stop.

Next, the operation of the first embodiment will be described with reference to FIG. The signal of the television broadcast input from the antenna 1 is detected by the tuner unit 2 and a video signal and an audio signal are output. This video signal is supplied to the switch 6,
This voice signal is supplied to the switch 7 via the multiple voice demodulation unit 3.

On the other hand, the video signals and audio signals input from the external input terminals 4 and 5 are also supplied to the switches 6 and 7, and the video signals and audio signals from one of the tuner section 2 and the external input terminals 4 and 5 are supplied. Is selected by switches 6 and 7,
The signals are processed for recording by the video signal processing circuit 8 and the audio signal processing circuit 9, respectively, and recorded on the magnetic tape 12 via the video head 10 and the audio head 11.

Further, the outputs from the memories 13 and 14 in which the data of the audio signal for a certain fixed time designated by the user are stored in advance are sent to the comparator 16. The output signals from the memories 13 and 14 and the output signal from the switch 7 via the A / D converter 15 are input to the comparator 16, and the memory 13 and
The audio signal data stored in 14 and the audio signal data actually recorded are sequentially compared. Microcomputer 17
Is a part of a microcomputer that controls the VTR system, and the start and stop of recording are also controlled by the comparison result of the comparator 16.

Next, the operation example of the first embodiment will be described in more detail with reference to the flowchart of FIG. 2 showing the case of timer recording. First, the user prepares for timer recording,
The audio signal data m1 for starting recording and the audio signal data m2 for stopping recording are previously stored in the memory 13,
It is assumed that it is stored in 14. In the present embodiment, simplification is made such that m1 and m2 are each one data (i
= 1), an arbitrary number of data i may be prepared.

When a predetermined setting is made and the timer recording standby state is set (step 21), the start time is determined (step 22), and when the start time is reached, the data s of the audio signal to be input next is stored in the memory. 13 audio signal data m1
Is monitored (step 23), and if s matches m1, recording is started (step 26). If they do not match, it is judged whether or not it is the end time (step 24), and if it is the end time, recording is stopped (step 25), but if not, s is continuously monitored (step 23).

During recording, it is monitored whether the input audio signal data s matches the audio signal data m2 of the memory 14 (step 27). If s matches m2, the recording is interrupted (step 30). Return to step 23. If they do not match, it is judged whether it is the end time (step 28),
If it is the end time, recording is stopped (step 29), but if not, s is continuously monitored (step 27).

Example 2. 3, the difference from the first embodiment is that video signal data m1 and m2 are stored in the memories 13 and 14 instead of the audio signal data, and the A / D converter 15 converts the analog video signal from the switch 6 into a digital video. It is configured to convert into signal data s. Other configurations and operations are similar to those of the first embodiment, and FIG. 2 can be applied to the second embodiment. That is, in the second embodiment, the video signal data m1 and m2 are stored in the memories 13 and 14 in advance, the input video signal s is monitored and compared by the comparator 16, and the microcomputer 17 is controlled according to the comparison result. Start and stop recording.

[0026]

As described above, according to the present invention, since the information to be recorded is selected according to the data set in the memory in advance, the user can freely set only an arbitrary portion on the magnetic recording medium. Can be recorded in.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main part of a magnetic recording / reproducing apparatus including a magnetic recording apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation example of an embodiment of the present invention.

FIG. 3 is a block diagram showing a main part of a magnetic recording / reproducing apparatus including a magnetic recording apparatus according to another embodiment of the present invention.

FIG. 4 is a block diagram of a conventional device.

[Explanation of symbols]

 1 Antenna 2 Tuner Section 3 Audio Multiplexed Signal Demodulation Section 8 Video Signal Processing Circuit 9 Audio Signal Processing Circuit 10 Video Head 11 Audio Head 12 Magnetic Tape 13, 14 Memory 15 A / D Converter 16 Comparator 17 Microcomputer 18 Key Matrix Section

Claims (6)

[Claims] 1. A magnetic recording apparatus comprising a memory for storing voice signal data for a certain period of time, and a comparator for sequentially comparing the data stored in the memory with the input voice signal data. 2. The magnetic recording apparatus according to claim 1, wherein the recording is started when the data of the input audio signal and the data of the audio signal previously stored in the memory match each other. 3. The magnetic recording apparatus according to claim 1, wherein the recording is temporarily stopped when the data of the input audio signal and the data of the audio signal previously stored in the memory match each other. 4. A magnetic recording apparatus comprising a memory for storing data of a video signal for a certain period of time, and a comparator for sequentially comparing the data stored in the memory with the data of an input video signal. 5. The magnetic recording apparatus according to claim 4, wherein the recording is started when the data of the input video signal and the data of the video signal previously stored in the memory match each other. 6. The magnetic recording apparatus according to claim 4, wherein the recording is temporarily stopped when the data of the input video signal and the data of the video signal previously stored in the memory match each other.