JPH04109481A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To inform a reproducing time required up to the end of a program by providing this magnetic recording and reproducing device with a circuit for periodically recording data indicating the residual time of group image recording on a tape and a display part for displaying the residual time of a program based upon read data. CONSTITUTION:The magnetic recording and reproducing device is provided with a timer circuit 1 capable of setting up image recording end time, a data recording circuit 4 for periodically recording data indicating a residual time on a tape, a data reproducing circuit 7 for reading out the data recorded on the tape at the time of reproducing, and a display part 9 for displaying the residual time of the program based upon the data read out from the circuit 7. In the case of timer recording, a time required up to the end of the program is periodically recorded on the tape based upon current time and recording end time, and at the time of reproducing the program, the recorded contents are displayed, so that the time required up to the end of the program can be quickly displayed even when the program is reproduced from any position.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording and reproducing apparatus such as a video tape recorder (hereinafter referred to as VTR).

BACKGROUND OF THE INVENTION When playing back a program recorded on a conventional VTR, it is often desired to know how long it will take to watch the program. For example, you have 30'yJ left until the TV broadcast you want to watch, and you want to use that time to watch a video you previously recorded and watched halfway, but you don't want to watch the video for too long than you have free time and miss the TV broadcast. do not have. If you know the playback time until the end of a program, you can decide whether you can finish watching it in your free time.

In such cases, the conventional method is to know the total time of the program empirically from the program being played, so you can measure the time from the beginning of the program to the playback position, or remember the time when it was played previously. Calculate the remaining time and decide whether to finish watching it in your free time or where to sit.

Problems to be Solved by the Invention However, with the conventional method, there is the trouble of having to remember the time when the program was previously played, and if the program cannot be remembered, the time must be measured from the beginning of the program, The problem was that time was running out. There is a way to judge by checking the video counter, but if you turn off the power or replace the tape with another tape, the counter value will become different and cannot be used. Another problem was that the user played the program without knowing how long it was until the end, and was so absorbed in the program that the next program was delayed.

In view of the problems mentioned in section 2, the present invention calculates the remaining time of the program from the current time and recording end time when the recording time is set with a timer, records the calculated value on the tape, and when playing back. To provide a magnetic recording/reproducing device which can notify the reproduction time to the end of the program from any tape position at any time by reading and displaying the recorded data value.

Means for Solving the Problems - J - In order to solve the Node on the Record, the magnetic recording and reproducing device of the present invention includes a timer circuit that can set the recording end time,
A data recording circuit that inputs the current time and the end time of the program being recorded from the timer circuit into the recording mode in which the recording end time is set, and periodically records data indicating the remaining time in recording the program on the tape. and a data playback circuit that reads data recorded on the tape during playback.
The apparatus is equipped with a display section that displays the remaining time of the program based on the data read by the data reproducing circuit.

Operation The present invention allows a program to end at any position on the tape with the above-described configuration! , you can immediately check how long it will take to view.

Example Below, regarding a magnetic recording and reproducing device according to an example of the present invention,
This will be explained with reference to the drawings.

FIG. 1 shows a block diagram of an embodiment of the present invention. In FIG. 1, 1 is a timer circuit, 2 is a system control circuit that controls each circuit and motor of the VTR, 3 is a recording remaining time calculation circuit, 4 is a data recording circuit, and 5 is a system control circuit that controls each circuit and motor of the VTR.
1 is a control head, 6 is a tape, 7 is a data reproducing circuit, 8 is a display control circuit, and 9 is a display section.

The operation of the magnetic recording/reproducing apparatus constructed as shown in FIG. 2 will be explained using FIGS. 1, 2, and 3 above.

FIG. 2 shows the remaining recording time calculation circuit 3, the data recording circuit 4, and the data recording circuit 4 shown in FIG. It is a flowchart showing the operation when the data reproducing circuit 7 and the display control circuit 8 are configured by a microcomputer-10.

First, the remaining recording time calculation circuit 3 determines whether it is timer recording based on the information from the timer circuit 1 in step 31, and if it is timer recording, the current time and timer recording end time are input from the timer circuit 1 in step 32. Calculate the remaining recording time from the difference. And data recording circuit 4
stores the calculated remaining recording time on the tape 6 via the control signal 5 in steps 33 and 34. This method can be easily carried out using, for example, the Cositroll Signal Cope Ink system that is included in the VHS format VTR standard. This is a standard that allows information to be recorded on the control track by changing the duty ratio of the control signal, and if time code recording and user data are used, data can be recorded every two seconds. Using this method, recording is performed for 2 seconds in steps 33 and 34, and then the process returns to step 31 to input the current time again and record the remaining recording time at that time. By repeating this until the end of recording, data is periodically recorded on the recorded tape.

Next, a case in which the tape is played will be explained.

The data reproducing circuit 7 determines whether or not reproduction is to be performed in step 35 based on information from the system control circuit 2, and if reproducing, reads the recorded remaining time from the control signal from the control head 5 in steps 36 and 37.

Then, the information is sent to the display control circuit 8, and step 3
8, the remaining time of the program being played back is displayed on the display section 9. In this embodiment, the display unit 9 is configured to display the remaining time of the program in a nouver-imposed manner on the video signal (detailed configuration diagram is omitted).

FIG. S is a diagram showing an example of the screen of a television receiver when the present invention is used, 50 is the screen of the television receiver, 51 is a character superimposed on the screen. be. By superimposing the remaining time of a program on the screen you are watching during playback, as shown in this screen, you can see at a glance how much time it will take to finish watching the program.

As mentioned above, according to this embodiment, when recording with a timer, the time from the current time and recording end time to the end of the program is periodically recorded on the tape and displayed during playback. , the time until the end of the program can be immediately displayed no matter where the program is played back.

In this embodiment, data was recorded using the control signal, but data may also be recorded using the vertical blanking period of the video signal.

Furthermore, although the data to be recorded is the remaining time of the program, the present time and the end time of the program may be recorded and the remaining time may be calculated during playback.

Although an example has been shown in which the display is superimposed on the screen, a fluorescent display tube, liquid crystal display, LED, etc. may also be used.

Effects of the Invention As described above, according to the present invention, the time until the end of the program can be immediately displayed no matter where it is played back from on the recorded terra, and it is possible to immediately decide whether to finish watching it in free time. ,
You can get even better results if you don't delay doing the next thing.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a flowchart showing the operation of the embodiment, and Fig. 3 is a diagram showing an example of the screen of a television receiver when the present invention is used. be. 1... Timer circuit, 2 ・SONUTEMCON 1~
Roll circuit, 3... Remaining recording time calculation circuit, 4.
・Data recording circuit, 5 ・To control, C, 6.
. . . tape, 7-. data reproducing circuit, 811 display control circuit, 9 . . . display unit.

Claims (1)

[Claims] A magnetic recording/reproducing device is equipped with a timer circuit that can set the recording end time, and when in a recording mode in which the recording end time is set, the current time and the end time of the program being recorded are input from the timer circuit, and the remaining time in the program recording is inputted from the timer circuit. a data recording circuit that periodically records time-determining data on the tape; a data playback circuit that reads the data recorded on the tape during playback; and a data playback circuit that determines the remaining time of the program from the data read by the data playback circuit. 1. A magnetic recording and reproducing device comprising: a display section for displaying information.