JP3318898B2 - Playback device for recording media - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium reproducing apparatus.

[0002]

2. Description of the Related Art An inexpensive soft tape may be provided by recording a commercial advertisement video signal together with a program video signal of a movie or the like on a tape.

[0003]

When such a soft tape is played on a VTR by a purchaser, the soft tape can be played in an FF (fast-forward) mode or a CUE (cue playback) mode.
There is a possibility that the recording part of the commercial advertisement video signal is skipped and only the part of the program video signal is reproduced. In this case, the commercial advertisement provider loses the meaning of paying the commercial advertisement on the soft tape.

In view of the above, the present invention is to fast forward a portion of a recording medium on which a commercial advertisement video signal is recorded in a recording medium reproducing apparatus in which a program video signal and a commercial advertisement video signal are recorded on recording tracks. In this case, a commercial advertisement video signal is always reproduced normally.

[0005]

According to the present invention, a program video signal and a commercial advertisement video signal are respectively recorded on a recording track, and a sub-code signal portion of the recording track on which the commercial advertisement video signal is recorded has a forward direction. A recording medium reproducing device that reproduces a recording medium on which a fast-forward prohibition signal is recorded, the recording-medium driving device, a control unit that controls the recording-medium driving device, and the presence or absence of a forward fast-forward prohibition signal, Signal detection means for supplying a detection signal to the control means. When the signal detection means detects the forward fast-forward prohibition signal, the control means controls the forward fast-forward mode in the recording medium driving device to the normal mode. This is a recording medium reproducing apparatus adapted to change to a reproducing mode.

[0006]

[0007]

According to the present invention, when the forward fast forward prohibition signal is detected by the signal detecting means, the forward fast forward mode in the recording medium driving device is changed to the normal reproduction mode by the control of the control means. The advertisement video signal is always reproduced normally.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a soft magnetic tape (soft video tape) to which the present invention is applied and a VTR for reproducing the same will be described below in detail with reference to the drawings. First, a soft magnetic tape will be described with reference to FIG. FIG.
Regarding (A), the track pattern of the magnetic tape TP will be described. TRS is an inclined track formed at the center of the magnetic tape TP, and a video signal including an audio signal is recorded on the inclined track TRS. This video signal comprises the program video signals P1, P2, P3,... And the commercial advertisement video signals C1, C2,. TRL1 and TRL2 are longitudinal tracks respectively formed on both side edges of the magnetic tape TP.

As shown in FIG. 1B, a subcode recording area is provided at one end of the inclined track TRS excluding the video / audio recording area, and a part of the subcode signal is provided in that area. The FF (fast-forward) prohibition signal is recorded. A 1-bit specific signal portion is provided in the sub-code signal, and when the signal portion is "1", this is a FF prohibition signal. Therefore, when the signal portion is "0", there is no FF prohibition signal. Then, "0" is recorded in the specific signal of the sub-code signal of the inclined track TRS on which the program video signal of a movie or the like is recorded, and the sub-code signal of the inclined track TRS on which the commercial advertisement video signal is recorded is recorded. Records "1".

Next, a circuit configuration of a reproduction system of a digital VTR for reproducing the soft magnetic tape will be described with reference to FIG. Reproduction signals from the rotary magnetic heads HA and HB mounted on the rotary drum of the tape guiding drum device comprising a fixed drum and a rotary drum at an angle of 180 degrees are provided with a demodulation circuit (decoder) through a changeover switch SW and a reproduction amplifier 1. 2), pulse code demodulation and D / A conversion to obtain a video signal including an audio signal.

The video signal obtained from the demodulation circuit 2 is
It is supplied to the video signal processing circuit 3 and the subcode separation circuit 4. Then, the subcode signal from the subcode separation circuit 4 is supplied to the subcode decoder 5 and decoded, and then supplied to the FF inhibition signal detection circuit 6.

System control circuit (with CPU)
Reference numeral 7 controls a controlled unit such as the tape drive 9, each circuit, and a switch. Then, the system control circuit 7 responds to a key input from the keyboard 8 to operate the tape drive 9,
By controlling the controlled part, the operation mode of the VTR is set to PB mode (normal reproduction mode), REC mode (recording mode),
CUE mode (fast forward playback mode for search), R
EV mode (reverse playback mode for search), FF
The mode is switched to a fast forward mode, a REW mode (rewind mode), an STP mode (stop mode), and a PS mode (pause mode).

Next, referring to the flowchart of FIG.
The operation of the reproduction system of the VTR and the function of the CPU of the control circuit 7 will be described. In the case of the soft magnetic tape TP, the recording mode is excluded. When the magnetic tape TP is stopped or temporarily stopped, the determination in the flowchart is omitted. Therefore, the flowchart is limited to the case where the magnetic tape TP is running.

First, in step ST-1, it is determined whether an FF prohibition signal has been detected. If YES, the process proceeds to step ST-2, and if NO, the process proceeds to step ST-1.
Return to In step ST-2, it is determined whether or not the operation mode is the PB mode.
1 and if YES, the process proceeds to step ST-3. In step ST-3, it is determined whether or not the operation mode is the CUE mode.
The process proceeds to step ST-7 if YES. In step ST-7, after changing the operation mode to the PB mode, the process returns to step ST-1. Step ST-
In step 4, it is determined whether the operation mode is the REV mode. If NO, the process returns to step ST-1, and if YES, the process proceeds to step ST-5. In step ST-5, it is determined whether the operation mode is the FF mode,
If NO, the process proceeds to step ST-6, and if YES, the process proceeds to step ST-7. In step ST-6,
It is determined whether or not the operation mode is the REW mode.
Regardless of whether it is O or YES, the process returns to step ST-1.

Therefore, when the FF inhibition signal is detected, when the operation mode is the CUE mode or the FF mode,
The mode is changed from the CUE mode or the FF mode to the PB mode, respectively. Therefore, such a soft magnetic tape TP is
When played back on the VTR described with reference to FIG. 2, the commercial advertisement video signal recorded on the magnetic tape TP is always played back. In other words, unless the commercial advertisement video signal is reproduced, the subsequent program video signal cannot be reproduced.

When the VTR to which the present invention is applied is an 8 mm VTR, as shown in FIG. 1C, the video / audio recording area and PCM of the inclined track on which the commercial advertisement video signal is recorded. Voice recording area
The FF prohibition signal may be recorded as a part of the subcode signal or independently.

[0017]

In the above embodiment, the present invention has been described as applied to a video tape and a VTR for reproducing the same. However, the present invention can be applied to a magnetic disk, a magneto-optical disk, etc., and a recording / reproducing apparatus therefor. it can.

The VTR to which the present invention can be applied may be a digital VTR or an analog VTR.

[0020]

According to the present invention described above, the program video signal and the commercial advertisement video signal are respectively recorded on the recording track, and the forward direction is added to the subcode signal portion of the recording track on which the commercial advertisement video signal is recorded. A recording medium reproducing device that reproduces a recording medium on which a fast-forward prohibition signal is recorded, the recording-medium driving device, a control unit that controls the recording-medium driving device, and the presence or absence of a forward fast-forward prohibition signal, Signal detection means for supplying a detection signal to the control means. When the signal detection means detects the forward fast-forward prohibition signal, the control means controls the forward fast-forward mode in the recording medium driving device to the normal mode. Since the mode is changed to the playback mode, even if the commercial advertising video signal recorded on the recording medium is fast-forwarded, the commercial advertising video signal is not Usually it is possible to obtain a reproducing device for a recording medium to be reproduced without. Therefore, if the reproducing apparatus of the recording medium according to the present invention becomes widespread, by recording the commercial advertisement video signal together with the program video signal on the recording medium, the low-cost recording medium on which the program video signal is recorded is spread. This can provide a benefit to a consumer who uses a recording medium on which the program video signal is recorded, and for an advertiser who intends to give a commercial advertisement, the consumer is recorded on the recording medium. If the program video signal is repeatedly played and viewed, the commercial advertisement video signal will also be repeatedly played along with it, so that consumers can see it, and the advertising effect will increase,
In addition to conventional advertising media such as televisions, radios, newspapers, magazines, advertising signs inside cars and outdoors, etc., it is also possible to use advertising media using recording media, thereby expanding the types of advertising media available to advertisers. be able to.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a method of recording an FF inhibition signal according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a circuit configuration of the embodiment.

FIG. 3 is a flowchart for explaining the operation of the embodiment and the operation of the CPU of the system control circuit;

[Explanation of symbols]

 TP magnetic tape P1, P2, P3, {program video signal C1, C2,} commercial advertisement video signal TRS1 tilt track TRL1, TRL2 longitudinal track 4 subcode separation circuit 5 subcode decoder 6 FF prohibition signal detection circuit 7 System control circuit 8 Tape drive

Claims (1)

(57) [Claims] 1. A program video signal and a commercial advertisement video signal are respectively recorded on a recording track, and a forward fast-forward prohibition signal is recorded on a subcode signal portion of the recording track on which the commercial advertisement video signal is recorded. What is claimed is: 1. A recording medium reproducing apparatus for reproducing a recording medium, comprising: a recording medium driving device; control means for controlling the recording medium driving device; And a signal detecting means for supplying the signal to the recording medium driving device under the control of the control means when the signal fast detecting means detects the forward fast forward prohibition signal. A reproducing apparatus for a recording medium, wherein the mode is changed to a mode.