JPS59147583A - Method and apparatus of automatic editing and picture recording of television broadcast - Google Patents

Abstract

PURPOSE:To eliminate automatically an unnecessary part, to improve the performance of easy-to-see at reproduction and to save amount of tape in use by stopping temporarily the picture recording operation at a point where contents of receiving are main sound only in the sound multiplex broadcast. CONSTITUTION:It is detected for a program part (Prog) by the existence of subcarrier for sub-sound channel and for control channel in an objective program that the sound multiplex broadcast is under receiving. On the other hand, as to the CM part, since the CM part is transmitted by main sound only in most cases, it is possible to identify the program part from the CM part base on this as an index. Thus, they are detected by a detecting circuit, and the picture recording is stopped temporarily for the CM part by operating a temporary stop control circuit with the detected output. Thus, the picture recording pattern excluding the unnecessary parts is obtained in this way.

Description

[Detailed Description of the Invention] The present invention relates to a method for automatically removing (automatically editing) unnecessary parts such as advertising parts when recording television broadcasts, and a device therefor for recording one program in commercial broadcasting, etc. If you record the entire program from the start time to the end time, there will often be advertisements (hereinafter referred to as C, M) in the middle, making it difficult to see during playback, and there will still be C, M, However, since the recording tape is also recorded, the amount of recording tape increases more than necessary, which is uneconomical.

To avoid this, you can either re-edit the recorded tape while dubbing it, or artificially distinguish the C, M, and program parts during recording, and then record only in the C and M parts. (3) A work process such as temporarily stopping the image operation became necessary. However, the former method has many inconveniences such as poor image quality due to dubbing, wasting time due to duplication, wasting tape, and requiring two decks. The latter method is often adopted. However, even with this method, it is necessary for a person to continue monitoring during recording, so it cannot be applied to recording using a timer (so-called answering machine), and furthermore, the clumsy human actions are cumbersome, making it difficult to make mistakes. It had many drawbacks, such as being easy to trigger and leading to the loss of the content that should have been recorded.

The inventor believes that even in the audio multiplex broadcast programs that are currently being implemented, C, M, parts, etc. are almost always sent only in the conventional main audio. Since many of the programs that require special broadcasting, such as dramas and movies, are being broadcast as multiplex broadcasts, even if one program is being recorded, the intended program content may be stereo or This method focuses on the fact that if it is a two-sided broadcast, unnecessary parts such as the C, M, and other parts can be easily removed.

The present invention has been proposed in order to eliminate the above-mentioned drawbacks from this viewpoint, and its purpose is to automatically remove unnecessary parts during recording without relying on artificial procedures. It is an object of the present invention to provide a recording method which can thereby improve visibility during playback and reduce the amount of tape used.

Another object of the present invention is to provide a video recording device that can selectively record only the necessary portion (5) during recording.

Still another object of the present invention is to provide a recording control add-on device which can be connected to conventional video decks and the like to control them and achieve the above object.

The present invention described above is applied when the program to be recorded is an audio multiplex broadcast, and includes a recording control method in which the recording operation is temporarily stopped when the received (input) content is only the main audio. and achieved by the device.

Next, the present invention will be explained in more detail based on the drawings.

FIG. 1 shows an example of the structure of one program.

When trying to record this program, the program start time (ts
) to the program end time (t8).
M, Ω~ Imo is recorded together as it is. Therefore, in order to remove these unnecessary parts and record on the tape in the form shown in FIG. , 1. ~t3
It is sufficient to temporarily stop the recording operation from T tl to t5stA-te, but if the target program is audio multiplex broadcasting such as stereo or two-door broadcasting, then the program shown in Figure 1 In the part (Prog,),
It is well known that it is possible to detect that an audio multiplex broadcast is being received based on the presence of a sub carrier for a sub audio channel, the presence of a sub carrier for a control channel, and the like. On the other hand, the C and M parts are currently C.

In most cases, the M1 part is sent only as the main audio, so using this as an indicator, it is possible to distinguish between the program part and the C, M, parts.
By "pausing" the recording, it is possible to automatically record in the recording pattern shown in FIG. It's a size.
Even if the unnecessary parts (C, M,...) are stereo broadcasts (or Ninohe broadcasting), if the target program part (Prog,) is Ninohe broadcasting (Kaketake stereo broadcasting), the control subcarrier A similar process can be performed by detecting the difference in A, M, and modulation frequency of .

FIG. 3 shows the video deck of the present invention in a block diagram of only relevant parts. The detection circuit can be easily configured using the method described above, and it goes without saying that the detection method may be any known method other than the method described above.

FIG. 4 shows an embodiment of an additional control device that can be connected to a conventional video deck to implement the present invention.

Here, the signal transmission lines (S, L,) may be transmitted by light or sound in addition to the method using current or voltage. f, "1. It is also possible to reuse.

FIG. 5 shows a more specific embodiment of this, in which an audio multiplex broadcast reception indicator (I) of an existing television, tuner, etc.
By receiving the light at the light receiving element (P), the detection circuit can be simplified, and by inputting the signal to the remote control circuit of the conventional video deck, the conventional video deck can be used without any modification. Furthermore, the present invention can be implemented with a control device having a very simple configuration.

(9) Although the present invention has an extremely simple structure, parts that are unnecessary during playback can be removed in advance during recording, which significantly improves the ease of viewing during playback and eliminates unnecessary use. This has the effect of saving the amount of tape.

However, for the same reason, it can also be used to record messages using a timer, such as voicemails, etc., without the need for any human operations and without the hassle of conventional editing.

Furthermore, as another effect of the trench, in Fig. 1, even if the timer recording time is set to tS~1e instead of t5~1°, only the necessary part can be recorded, which has the effect of compensating for the accuracy of the timer and to a certain extent. It has the ability to automatically respond to changes in program times, something that conventional video (10) video recording systems did not have at all.

4 Brief explanation of the drawings □ Figure 1 is an explanatory diagram showing the structure of one program, Figure 2 is an explanatory diagram showing the ideal recording state on a recording tape, and Figures 3 to 5 are each The embodiments of the present invention are shown in block diagrams of only relevant parts, of which Figure 3 shows the video deck of the present invention, and Figure 4 shows how it is connected to a conventional video deck, etc. A control device that controls the
Further, FIG. 5 shows more specific embodiments of the recording control addition device.

(C, M,.~3)... Unnecessary parts such as advertising parts (P
log, )... Program part (ts)... Program start time (11) (te)... Program end time (t)... Each intermediate time 1 to t (js)... Before the program start time (R)
... Time after the end of the program (V, D, ) ...
・ Video deck (S) of the present invention ... system (
signal (v, D, u) ・・・ Conventional video deck (S
, L, ) ... Control signal transmission line (I) ・
... Multiplex broadcast reception indicator (P) ... Light receiving element (RMT) - φ Remote control] Roll signal input circuit (12) (U)

Claims (1)

[Claims] 1. Presence or absence of sub-carrier for sub-audio channel (centered at 31,5 KHz) during audio multiplex broadcasting, presence or absence of control channel signal (sub-carrier of 55,125 KHz), or for this control Subcarrier A, M, modulation frequency difference (982°5Hz or 922.5) (z
) and controls the recording device based on this to select and record only the stereo or two-angle broadcast portion of the broadcast. 2. Selectively select only the stereo or two-way broadcast portion based on the presence or absence of a sub-carrier for a sub-audio channel during audio multiplex broadcasting, the presence or absence of a control channel signal, or the difference in A, M, and modulation frequencies. A video deck that is characterized by being capable of recording. 3. The video deck's "record-pause" operation is performed based on the presence or absence of sub-carriers for sub-audio channels during audio multiplex broadcasting, the presence or absence of control channel signals, or the differences in A, M, and modulation frequencies. Recording control device to control. 4. The apparatus according to claim 3, wherein the "recording-pause" operation is controlled by remote control (including wireless).