JPS60153684A - System and device for delayed rebroadcasting - Google Patents

Abstract

PURPOSE:To increase the number of degrees of freedom of channel selection by providing time differences to plural channels in the delay and rebroadcast system which gives time differences for plural channels and transmits pictures continuously. CONSTITUTION:A top of a tape recorded in a cable television broadcast real- time recorder VTR1 is pulled out without operation, inserted into a continuous tape buffer 2 with 1hr capacity and led to a reproducer VTR3. The tape enters a VTR5 passing through a reproducing head and a tape buffer 4 having the same constitution as that of the buffer 2, and in the same manner it is connected at an inlet of the VTR1 through a buffer 6 and a VTR7, thereby becoming endless. Thus four types of delayed image signals such as 1hr, 2hr, 3hr and 4hr are reproduced from the VTRs 1, 3, 5 and 7, respectively.

Description

[Detailed Description of the Invention] [Technical field to which the invention pertains] The present invention relates to a cable television broadcasting system (hereinafter referred to as CATV) and a device for increasing broadcast channels [Background of the invention] Background Part 1 , CATV is a system that broadcasts television video signals over wired lines without using radio waves for broadcasting. Therefore, it has a number of channels (more than 100 channels are in practical use in the United States). That is,
can.

Sending different images to a large number of channels requires a great deal of time and money to produce a true image, but it is
cA, on TV, the subscription rate is low unless independent programs are produced.
This is one of the factors that hinders the development of CA, T, and V. Conventional CATV mostly involves retransmission of broadcasts, making it difficult to operate outside of areas where viewing is difficult.

,Background 21 Normally T TV broadcasts may have overlapping broadcasts that you want to watch in the same time slot, restaurants, some shops, and other activities.1. There is a strong feeling that it is unfair from the public aspect of the public broadcasting of people who are unable to do so.

[Summary of the Invention] The present invention is directed to a plurality of video cheapres and coders (hereinafter referred to as V
TR is used to record real-time TV broadcasting on the first VTR for a set delay time (time to be delayed from the actual broadcast time), and the recorded tape is recorded a predetermined number of times (delayed broadcast time) for each set time. (equivalent to the number of broadcasting channels) will be recorded again.

At the same time as the first tape playback state is entered, recording for a set time is started on the second tape, and at the same time as the recording ends, playback a predetermined number of times is started.

Recording of No. 3 starts simultaneously with No. 2 playback. In this way, the necessary number of devices are connected in succession, and the chain is completed when the predetermined number of devices plus the longest number ends recording and starts playback, and then returns to number 1 and starts recording, resulting in an endless state.

Video signals delayed by a set time are obtained from the total number of VTRs (minus one) that are in playback mode, and delay time information is added to these signals and modulated into separate channels for CATV.
Send it to the line.

[Explanation based on examples]

FIG. 1 is a conceptual diagram for explaining an embodiment.

1. is a real-time TV broadcast recording VTR, and the tip of the recorded tape is pulled out as is; 2. Place the tip into a 1-hour continuous tape buffer indicated by '3. This will lead you to the VTR for playback.

The tape is 31. 2.
A tape buffer with the same structure as 4. Intermediate, 3rd exit 5. 6. buffer and 7. Increase the VTR by +1%, 1. The tapes are connected at the entrance to make it endless.・1.3.5.7. Each of the playback VTRs provides a playback output that is delayed in accordance with the buffer capacity time of one hour. □ Now, 1. The reproduction νTR of is delayed by 1 hour, and the V of 3.
2 hours late from TR, 5. There is a delay of 3 hours from the playback VTR, 7. There is a delay of 4 hours from the VTR playing back, and in this way, it is equivalent to the number of playing VTRs multiplied by 6 units of time.

Four types of delayed video signals are obtained.

The obtained video signals are modulated to different channel frequencies and CA
9. For the video signal sent to the TV line. These devices add letters or symbols to indicate the delay time so that the viewer knows how many hours the co-channel is delayed. °
Is there a method that does not include any mechanical parts and programs the recording and playback of VTRs? □Ai' If we use a 4-hour format, we will use 1.5 VT'Rs for each hour plus 1.5 units.
First, record on the first VTR and play it 3' times after the 14th screen.For the second VTR, start recording from 1 hour later, and play it 3 times in the same way as 1 from 1 hour later. In this way, I decided to start recording from the recording barrel, and at the same time as 1-1 entered the door, I started recording the 11th VTG again.
From the ``output'' of TIt', you can smell an output that is delayed by 1 time from the last ``recorded''.

□ With this method, it takes a time to rewind the VTR, but by using the 1st and 2 systems alternately, it is possible to output a day's work.This explanation is about the method using a VTR. However, it is also possible to use magnetic desks, digital storage devices, etc.' [Effects of the invention] If a device related to unreleased J is installed at a CATV transmitting station,
If we assume a 4-hour delay, a 1-channel, 1-time difference system, and that 6 channels are currently being displayed, we would have 28 channels, 8 channels, 8 systems, and 1. M1
, becomes.

In a system using
．． It becomes possible to listen to delayed broadcasts,
Each subscriber □ home □ only needs to receive 12 channels during the time slots of ``Nijiji'' and ``Kuwa''. Therefore, compared to ordinary households receiving direct broadcasting, the degree of freedom in channel selection is increased, making it a valuable CATV system. As a result, the number of subscribers will inevitably increase, and sound management can be expected.

Furthermore, the device of the present invention can be provided safely with its effects and contributes to the development of CAT, V, and the like.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of an embodiment of the present invention. l...VTR for recording, 2...tape stocker, 3
...Playback VTR14...Tape stocker, 5...
PaP Raw VTR 16... Tape stocker, 7...
Playback VTR 8...Video tape, 9...Delay time display. Patent applicant TID Co., Ltd. Representative Tatsuo Kanemaki

Claims (2)

[Claims] (1) In the video rebroadcast system of the cable television system, multiple channels are used without making any changes to the broadcast content.
,, 3 hours difference continues, , the delay of the method starts
broadcast system. (2) In the system described in (1) □, is it possible to display a female character or symbol ゛ to indicate delay time or pause on a part of the video screen? A delayed rebroadcast device with a characteristic feature.