JPH07162794A - Multiple-channel recording video system - Google Patents

Abstract

PURPOSE:To simultaneously record the programs of plural channels with one video deck by providing a tuner for simultaneously receiving multiple channels, a selector for selecting the channel, a channel block for recording pictures and sound corresponding to the channel and a head for recording the pictures and the sound in a prescribed order. CONSTITUTION:The multiple channels are simultaneously received by the turner 1 of one video deck, the required pictures and sound of the plural channels are selected by a channel selector 2 and sent to the channel block 3 and the pictures of short time allocated corresponding to a channel number and the time-compressed sound are recorded on one magnetic tape by a recording head 5 in the prescribed order. At the time of reproduction, only the pictures and sound of a desired channel are selected by a read head 5. Thus, the sound is expanded so as to be the original time and prevented from being offensive to the ear even though the continuity of the pictures is degraded a little.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-channel recording video system capable of simultaneously receiving two or more channels and recording two or more images and sounds on one magnetic tape.

[0002]

2. Description of the Related Art Conventionally, one VCR can record only one channel of a program, and cannot simultaneously record programs of a plurality of channels in the same time zone.
Therefore, if the programs to be watched overlap in the same time zone, two VCRs must be prepared. Much less 3
When the above programs overlap, a plurality of VCRs corresponding to the number of the programs are required. In addition, a so-called G code must be used for reserved recording of a television program, and a number of digits attached to the program must be input in advance. However, not only is it troublesome to enter each G-code number, but sometimes the user forgets to enter it, and if an incorrect number is entered, correct recording cannot be performed. Therefore, there is a method that simplifies the G code input work by using a bar code reader, but in this case as well, the reading operation may be forgotten, and if the bar code is dirty or wrinkled. , There is an inconvenience that a reading error of the barcode reader occurs.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve all the above-mentioned conventional problems, and one VCR can record programs on a plurality of channels in the same time zone.
Multi-channel recording video that can be recorded on two magnetic tapes at the same time, and can be reserved without inputting G code or reading with a bar code reader, and can select any desired program for playback. The challenge is to provide a system.

[0004]

As a means for technically solving the above-mentioned problems, the present invention corresponds to a tuner for simultaneously receiving multiple channels, a channel selector for selecting a channel to be recorded, and a channel. Channel block for temporarily recording images and audio,
A gist of a multi-channel recording video system including at least a head for recording images and sounds in a channel block on a magnetic tape in a predetermined order.

[0005]

[Operation] A single VCR tuner receives multiple channels at the same time, the channel selector selects the required images and audio for multiple channels, sends them to the channel block, and the short time is allocated according to the number of channels. The image and the time-compressed sound are temporarily recorded, and the image and the sound are repeatedly recorded on one magnetic tape by the recording head in a predetermined order. At the time of reproduction, only the image and sound of one desired channel need be selected by the reading head. The continuity of the image is somewhat inferior, but the sound is stretched according to the original time so it is not unpleasant to hear.

[0006]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a VCR tuner, which can receive images and sounds of all channels of a connected TV receiver.

Reference numeral 2 is a channel selector connected to the tuner 1, and selects only some of the required channels (4 in the illustrated example) from all the channels received by the tuner 1, and selects a channel block corresponding to each channel. The image and the audio signal are transmitted to 3 respectively.

The channel block 3 is composed of an image memory 3a capable of recording at least one image and a compressed voice memory 3b capable of temporally compressing and recording voice, and has a resolution of 30 images per second, for example. When the number of selected channels is 4, as described above, an image of 1/30 seconds is recorded every 4/30 seconds, and the audio for 4/30 seconds is time-compressed to 1/30 seconds. To record. This recording is repeatedly performed in order over time.

Reference numeral 4 denotes a block selector connected to each channel block 3, which repeatedly selects each channel block 3 to record information recorded in each image memory 3a and compressed audio memory 3b with a head (recording head) 5. Through one magnetic tape 6 as shown in FIG.
Are recorded in the required areas.

That is, in the illustrated example, the image recording area recorded in one second is divided into 30 equal parts, and one image signal recording area 6a, that is, an image recording area of 1/30 second, has a channel ch.
The image signal of 1 (1), the image signal of channel ch3 (3), the image signal of channel ch4 (4), and the image signal of channel ch6 (6) are repeatedly recorded in this order,
In the audio signal recording area 6b corresponding to this, an audio signal compressed for 1/30 seconds is recorded by a rotary audio head (not shown) in an overlapping manner with the image signal.

In this way, it is possible to record a plurality of channels of image and audio signals on one magnetic tape. Therefore, one VCR can simultaneously record programs of a plurality of channels in the same time zone on one magnetic tape. Further, it is not necessary to input a G code number or read with a barcode reader when recording, and it is possible to prevent reservation mistakes and reservation forgetting.

On the other hand, when reproducing the recording, for example, when it is desired to watch the channel ch1, the head (reading head) 5
The magnetic tape 6 is read and reproduced by, and the frame switcher picks up and monitors only the image signal (1) of the channel ch1 and the audio signal corresponding thereto from the reproduced. However, the image of 1/30 second is 4 /
Since the same image is reproduced every 30 seconds and the same image is monitored for 4/30 seconds, the resolution becomes 7.5 / second. Also, the voice is 1 /
It sounds normal because what was compressed to 30 seconds is stretched to 4/30 seconds. Therefore, although the resolution is somewhat inferior, the sound is normal and can be sufficiently used as a video. Of course, the reproduction is not limited to the channel ch1, and a desired channel can be arbitrarily selected from the recorded ones.

By using the video system according to the present invention, one VCR can simultaneously record programs of a plurality of stations in the same time zone on one magnetic tape, so that the so-called golden hour where the programs to be watched are concentrated. Demonstrate the power. Also, when programs that one does not want to see are likely to be mixed, the channel selector 2 may be switched to select another channel to change the combination.

[0014]

As described above, according to the present invention,
It is very convenient because one VCR can record multiple channels of TV programs at the same time on one magnetic tape at the same time. In addition, reproduction has an excellent effect that only a desired program can be arbitrarily selected without inputting a G code or reading with a barcode reader at the time of recording.

[Brief description of drawings]

FIG. 1 is a configuration block diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a recording state of an image and an audio signal on a magnetic tape.

[Explanation of symbols]

1 ... Tuner 2 ... Channel selector 3 ...
Channel block 3a ... Image memory 3b ... Compressed audio memory 4
... Block selector 5 ... Head 6 ... Magnetic tape 6a ... Image signal recording area 6b ... Audio signal recording area

Claims (1)

[Claims] 1. A tuner for simultaneously receiving multiple channels, a channel selector for selecting a channel to be recorded, a channel block for temporarily recording an image and audio corresponding to the channel, and an image in the channel block. And a head for recording audio on a magnetic tape according to a predetermined order, and a multi-channel recording video system.