JPS63128880A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To know easily a recording date and time by including the data of the recording date and time of a program in an information code such as a video program system (VPS) signal, and displaying the result at a displaying means. CONSTITUTION:A reproducing signal processing circuit 1 inputs a reproducing signal from a head, executes other signal processing, supplies it to a monitor as a video signal and feeds to a 16H slicer 2. The 16H slicer 2 slices a VPS signal part overlapped to a 16th horizontal scanning period 16H of the vertical fly-back line period of a video signal and feeds to a data detecting device 3. The code in it is detected, discriminated and a necessary VPS code is impressed to a displaying control circuit 4. The circuit 4 supplies the date and time of a VPS code as an information code to a displaying part 5 and displays visibly them.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a method for making use of the information code when reproducing a recording medium such as a magnetic tape on which a video signal superimposed with an information code indicating the contents of a broadcast program is recorded. [Prior art] An information code such as the content of the program and the broadcast time is superimposed on the video signal of a broadcast program, and the receiving side uses this information code to transmit the information to the video equipment. , VPs (Video Progr.
am System (video programming system) is known.

vPS is German Published Patent Specification No. 2614188.

As disclosed in Japanese Patent No. 2661055, Japanese Patent No. 1!2950432, etc., the 16' of the vertical retrace period of the video signal
The information code is multiplexed and transmitted during the fourth horizontal scanning period (16H), and is a VTR reservation system developed mainly by West German broadcasting stations.

FIG. 2 is an explanatory diagram of the vPS signal, and shows the 161st vertical retrace period in which the vPS signal in the video signal is superimposed.

In the figure, Hs is a horizontal synchronization signal + Dv is a vPS signal, B is a color burst, and the superimposed signal is a level change of bit "1" from high to low and bit 10 from low to high according to the PE code. expressed.

As shown in the figure, the VPS signal configuration consists of 15 words, each word consisting of an 8-bit binary code, and the 4 words from the 11th word to the 14th word are transmitted to the VTR. I am using it as a vPS signal for.

The code contents of the VPS signal for VTR include the broadcast date, broadcast time, and minute of the broadcast program, as shown in an enlarged view in Figure 2.
It consists of the nationality code of the broadcasting station, a program source code assigned to each broadcasting station, and an address code.

FIG. 3 is a block diagram showing a schematic configuration of a VPS compatible VTR, in which 10 is a tuner section, 11 is an amplification/detection section, 1
2 is a decoder section, and 13 is a scheduled recording control section.

14 is a reservation input section, 15 is a recording/playback control section, which includes a recording signal processing section 16, a playback signal processing section 17, and a tape running control section 18.
It consists of

In the figure, a broadcast program signal received by an antenna is applied to an amplification/detection 1@S 11 via a tuner section 10. The video signal which is the detection output from the amplification/detection section 11 is superimposed with the 16th HI (:VPS signal) of the vertical retrace period. The data is detected. The VPS data from the decoder unit 12 is given to the scheduled recording control unit 13, and this v
The PS data start times 9 and dates are compared, and when they match, a recording start signal is given to the recording/playback control section 15, the tape running control section 18 is operated, and the recording signal processing section 16 starts the amplification/detection section 11. ) starts recording the video signals from the other devices. Note that the scheduled recording control section 13 may be configured with a microcomputer or the like, and can be configured to control the entire V'l'R(1) operation.

FIG. 4 is a block diagram showing details of the vPS data decoding section, in which 20 is a 16H slicer, 21 is a data detector, 22 is a comparator, and the reservation input section 14. The scheduled recording control unit 16 corresponds to those with the same reference numerals in FIG. This is given to the data detector 21 and vP
Detect S data. The output of the data detector 21 is compared with the reservation data set in the reservation recording control section 13 in the comparator 22, and the comparison result is given to the reservation recording control section 13 as a vPS discrimination signal, and the recording/playback is performed via this. The control section 15 is supplied with recording control.

[Problem that the invention seeks to solve]

In the above conventional technology, in order to know at a later date when a program recorded on a tape was recorded,
It is necessary to paste a piece of paper with the recording date written on it on a part of the tape cassette, etc., and if this is forgotten, there is a problem that the recording date and time of the tape cannot be known.

When playing back a tape recording a video signal on which an information code such as a vPS signal is superimposed, the present invention extracts the information code such as the vPS signal superimposed on the video signal during playback and reproduces the video signal. An object of the present invention is to provide a magnetic recording/reproducing device that displays and allows the user to know the broadcast date, time, etc. of a program.

[Means for solving problems]

The above purpose is to provide a means for extracting information codes such as PS signals superimposed on 48 vertical periods from a reproduced video signal during tape playback, and to extract at least the date and time of the extracted information codes such as VPS signals. This is achieved by providing means for displaying the information.

[Effect]

The information code, such as the vPS signal, extracted from the reproduced video signal includes data on the recording date and time of the program, and by displaying this on the display means, it is possible to easily know the recording time.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a magnetic recording and reproducing apparatus according to the present invention, in which 1 is a reproduction signal processing circuit for processing a reproduction signal from a head, 2 is a 16H slicer, 3 is a data detector, and 4 is a reproduction signal processing circuit for processing a reproduction signal from a head. 5 is a display control section, and 5 is a display section.

In the figure, the playback signal processing circuit inputs the playback signal from the head, performs frequency conversion and other signal processing, and supplies it to a monitor (not shown) as a video signal.
The 016H slicer 2 slices the vPS signal portion superimposed on the 16th H of the vertical retrace period of the video signal, supplies it to the data detector 5, detects the code therein, and discriminates it. , applies a PS code to the display control circuit 4 if necessary. The display control circuit 4 displays the date and time of the vPS code as an information code on the display unit 5.
and is visually displayed on the display section 5.

The display section 5 may be an appropriate display device such as a fluorescent display tube, an LED, or a liquid crystal provided in the vTER.

Instead of displaying the vPS code on the display device as described above, the vPS code may be displayed on the monitor screen together with the video image. In that case, they can be displayed simultaneously on the same screen using known screen compositing techniques.

It goes without saying that the extraction and detection of the VPSA number can be configured to use a function for extracting and detecting the VPS from the broadcast signal during VTR recording.In addition, in the above embodiment, the VPS signal is not superimposed. Although the explanation has been made assuming that the video signal is symmetrical, the invention is not limited to this.
Using other forms of information code superimposed on the video signal,
A similar effect can be obtained by using the date and time in the information code.

〔Effect of the invention〕

As explained above, according to the present invention, when playing back a tape recording a video signal on which information codes such as date and time are superimposed, it is possible to determine when video number 1148 (program, etc.) of the tape was recorded. To provide a highly user-friendly magnetic recording and reproducing device that allows you to easily know the date and time when each program was recorded, even when multiple programs are recorded on the same tape. can do.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the invention, Fig. 2 is an explanatory diagram of a vPS signal, Fig. 3 is a block diagram showing a schematic configuration of a vPS compatible VTR, and Fig. 4 is a block diagram of a VPS data decoding section. It is a block diagram showing details. 1... Reproduction signal processing circuit

Claims (1)

[Claims] 1. In a magnetic recording and reproducing device that reproduces a recording medium such as a magnetic tape on which a video signal superimposed with an information code indicating the content of a broadcast program is recorded, and makes the information code available,
An extraction detection means for extracting and detecting the information code from the reproduced video signal and a display means for visually displaying the information code obtained by the extraction detection means are provided, and at least the recording date of the program recorded on the tape is provided. , a magnetic recording and reproducing device characterized in that it is configured to be able to display time.