JPH04134655A - Automatic repeating controller - Google Patents

Abstract

PURPOSE:To reproduce only recorded information part repeatedly by providing a memory and the like storing the counter value of a counter means, and by storing the start position and the finish position of a recorded information signal. CONSTITUTION:In a memory control part 12, when a signal indicating that a recording start position is detected is transmitted from a signal detecting part 20, the value of a counter 11 at that time is inputted in a memory 13. Thus, in the memory 13 the counter value of the recording start position is stored. And the value of the counter 11 when the signal indicating that an unrecorded position is detected is transmitted from the detecting part 20 to the control part 12 is inputted to the memory 13. Thus, the counter at the record finishing is stored in the memory 13. And only the section between the counter values of the recording start position and the recording finish position of the recorded information part is reproduced. And, when a deviation is generated between the counter values of the recording start position and the recording finish position and the actual information recording position of a tape, the counter value is corrected. Therefore only the information signal can be always reproduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an auto-repeat control device for a video tape recorder having a counter function.

(Prior art) The auto-repeat operation in conventional video tape recorders consists of a method that uses the VISS detection function to repeat playback and rewinding within a specified range using a remote control, etc., and a method that uses a tape start detection function and a tape end detection function. A method using this function is to play the tape from the beginning to the end regardless of the position stored on the tape, detect the end of the tape using the tape end detection function, and then play the end of the tape until the beginning of the tape after the detection. A repeat method in which the tape start detection function detects the end of rewinding and rewinding, and after the detection, the tape is played again.
A method that utilizes a detection means that detects a position where information is stored and a position where information is not stored on the tape, and the detection means detects the recording start position of the information signal while rapidly forwarding the tape from its starting end. The tape is normally run from the detected recording start position, and the reproduction means reproduces the information signal, and the recording end position of the information signal is detected by the detection means for detecting a position where the information is not stored. the tape is fast-forwarded for about 5 seconds from the detected recording end position to confirm that the recording of the information signal has been completed by the detection means, and after the confirmation is completed, the tape is rewound. was.

The method using the VISS detection function has the disadvantage that the rewinding range must be specified using a remote control or the like, and the specifying operation is cumbersome. Further, even in a method that combines the repeat function and the method using the detection means, it is necessary to search for the start and end positions of the recorded portion each time after rewinding is completed.

(Problems to be Solved by the Invention) As described above, in the conventional method, there was no means for automatically reproducing only the recorded information portion over and over again.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and the first reproduction is performed using a detection means that detects the position where the above-mentioned information is stored and the position where the information is not stored. The purpose of the present invention is to provide an auto-repeat control device that includes a method of storing counter values of the position and end position, and repeats playback and rewinding between the counter values stored during the first playback after the second playback. .

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a tape running drive means for controlling the running direction and speed of the tape, a counter means for measuring the running distance of the tape, and a counter for the counter means. a memory for storing values; a reproducing means for reproducing information signals stored on the tape; and a position where information is stored and a position where information is not stored on the tape based on a reproduction output from the reproducing means. a detection means for detecting the information signal; and a control means for controlling the respective means, the detection means receiving the auto-repeat mode setting signal and causing the tape running drive means to rapidly advance the tape from its starting end while the detection means detects the information signal. Detecting a recording start position and storing a first value, which is a counter value of the counter means at that time, in a previous memory, and causing the tape to run normally from the detected recording start position and outputting an information signal by the reproducing means. While playing, the detecting means detects a recording end position of the information signal, and the tape is fast-forwarded for a predetermined time from the detected recording end position, and the detecting means confirms that recording of the information signal has ended. and confirmation registration control for storing a second value, which is a counter value of the counter means at the detected recording end position, in the memory and rewinding the tape after the confirmation is completed; When the counter value of the counter reaches the first counter value during the rewinding, the video signal is played back by the playback means while the tape is normally run until the counter value reaches the second value. , a repeat playback control for controlling the video signal to be rewound again when the counter value reaches a second value, and to repeat the playback for a target number of times between the first and second counter values; At the time of return reproduction, the detection means detects the first
, determines whether there is a deviation between the second counter value and the actual information recording position on the tape, and when a deviation occurs, the first,
The present invention is equipped with a correction control for controlling to correct the second counter value, a control means for controlling the following, and enables auto-repeat control for repeatedly reproducing only the recorded information portion.

(Operation) In the present invention, counter values of the recording start position and recording end position of the recorded information portion are stored, and only the portion between these values is reproduced. Further, when a discrepancy occurs between the counter values at the recording start position and recording end position and the actual information recording position on the tape, the counter value is corrected.

The above operation enables auto-repeat control in which only the recorded information portion is repeatedly reproduced.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings. FIG. 1 is a block diagram showing one embodiment of an auto-repeat control device.

When a signal indicating that the auto-repeat function has been selected from the keyboard 15 is input to the operation signal output section 17, the operation signal output section 17 instructs the tape operation section 10 to perform a playback operation. One of the image signals extracted by the image extracting section 18 during the playback operation is subjected to processing such as amplification in the image signal processing section 19, and then output to the CRT side and displayed as an image on the screen, and the other is The signal is input to the signal detection section 20. The signal input to the signal detection section 20 is determined whether it is a recorded information signal or not, and the determination result is input to the operation signal output section 17 and the memory control section 12. Here, if the determination result of the signal detection section 20 is not recorded information, the operation signal output section 17 instructs the tape operation section 10 to perform fast-forward playback, and while performing this fast-forward playback, the Wait until the detection unit 20 detects the recorded information signal.

When the signal detection section 20 detects the recorded information signal, the signal detection section 20 indicates to the operation signal output section 17 and the memory control section 12 that a recording start position has been detected. A signal is sent, and in response to this signal, the operation signal output section 17 issues an instruction to the tape operation section 10 to shift the tape operation from fast-forward playback to playback.
The running distance of the tape measured by is inputted at any time, and when a signal indicating that the recording start position has been detected is sent from the signal detection section 20, the value of the counter 11 at that time is stored in the memory 13. Enter. As a result, the counter value of the recording start position is stored in the memory 13.

At the end of recording, the signal detection section 20 detects an unrecorded position, and the signal detection section 20 detects an unrecorded position for the operation signal output section 17 and the memory control section 12. A signal indicating this is sent out, and in response to this signal, the operation signal output section 17 issues an instruction to the tape operation section 10 to shift from playback to fast-forward playback. After the unrecorded position is detected by the signal detecting section 20, fast-forward playback is performed for about 5 seconds to confirm that there is no information signal recorded after the unrecorded position was detected. Note that this 5-second count is performed by a timer 16. When this confirmation is completed, the operation signal output section 17 issues an instruction to the tape operation section 10 to shift from fast forward playback to rewind playback, and when an information signal recorded during the confirmation is detected, , play again.

From the signal detection unit 20 to the memory control unit 12,
The value of the counter 11 at the time when a signal indicating that an unrecorded position has been detected is stored in the memory 13.
Enter. As a result, the counter value at the end of recording is stored in the memory 13.

The value of the counter 11 when the tape is rewound is input to the count comparison section 14, and is compared with the recording start value stored in the memory 13.
It is compared in. If the two compared count values match, the count comparison section 14 sends a signal to the operation signal output section 17 indicating that the two count values match, and the operation signal output section 17 outputs this signal. When the signal is received, it issues an instruction to the tape operating section 10 to shift from rewinding to playback. As a result, the data is reproduced again from the recording start position.

Even when the information signal is being reproduced, the value of the counter 11 is input to the count comparison section 14, and the value at the end of recording stored in the memory 13 is compared with the count comparison section 1.
4 for comparison. If the two compared count values match, the count comparison section 14 sends a signal to the operation signal output section 17 indicating that the two count values match, and the operation signal output section 17 outputs this signal. When the signal is received, an instruction is issued to the tape operation unit 10 to shift from playback to rewinding, whereby the tape is played back to the recording end position and then rewound again. After this, the above-described playback and rewinding are repeated the desired number of times.

FIG. 2 diagrammatically represents the above operation.

It should be noted that since it is possible that the counter values of the start and end positions of recording stored in the memory 11 and the tape positions of the start and end of the information signal may deviate, the signal detection may occur during the process of repeating playback and rewinding. The image signal is always detected in the section 20, and if the counter value and the tape position are out of alignment, the counter value and the tape position stored in the memory 11 are corrected, so that only the information signal is always detected. can be played.

[Effects of the Invention] As explained above, according to the present invention, by storing the counter values of the start position and end position of the recorded information signal, there is no unnecessary operation in the subsequent repeat operation, making it easy to use. It is possible to perform an auto-repeat operation.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of an auto-repeat control device for a video tape recorder according to the present invention, and FIG. 2 is an operational diagram showing the auto-repeat control operation in FIG. 1. O... Tape production unit 1... Counter 2, Memory control unit 3... Memory 4... Count comparison unit 5... Keyboard 16 Timer 17... Operation signal output unit 18, Image extraction unit 19 ...Signal processing section 20...Signal detection section

Claims (1)

[Scope of Claims] Tape running drive means for controlling the running direction and speed of the tape; counter means for measuring the running distance of this tape; a memory for storing a counter value of this counter means; a reproducing means for reproducing an information signal stored in the tape; a detecting means for detecting a position where information is stored and a position where information is not stored on the tape based on a reproducing output from the reproducing means; and a detecting means for controlling each of the above-mentioned means. The control means receives an auto-repeat mode setting signal and causes the tape running drive means to rapidly advance the tape from its starting edge, while the detection means detects a recording start position of the information signal, and the counter means at that time detects the recording start position of the information signal. A first value, which is a counter value, is stored in the memory, the tape is normally run from the detected recording start position, the reproduction means reproduces the information signal, and the detection means detects the recording end of the information signal. detecting the position, fast-forwarding the tape for a predetermined period of time from the detected recording end position, confirming that recording of the information signal has been completed by the detecting means, and after completing the confirmation, detecting the detected recording end position; confirmation registration control for storing a second value, which is a counter value of the counter means at the position, in the memory and controlling the tape to be rewound; When the counter value reaches the second value, the video signal is reproduced by the reproducing means while the tape is normally run until the counter value reaches the second value, and when the counter value reaches the second value, the video signal is reproduced again. repeat playback control for controlling the video signal to be played repeatedly by rewinding and repeating the playback for a target number of times between first and second counter values;
, determines whether there is a deviation between the second counter value and the actual information recording position on the tape, and when a deviation occurs, the first,
An auto-repeat control device comprising: a correction control for controlling to correct a second counter value; a control means for controlling;