JP3033794B2 - Recording transition time measuring device and recording information editing device - 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 transition for measuring a recording start transition time for accurately recording a reproduced image from a desired track output from a reproducing apparatus on a desired track of a recording apparatus. The present invention relates to a time measuring device and an editing device for performing editing so as to accurately record a reproduced image from a desired track output from a reproducing device on a desired track of a recording device using the recording transition time.

[0002]

2. Description of the Related Art Conventionally, when editing a video tape, the timing of a control signal transmitted to a recording device is adjusted to externally control a recording start time and a recording end time. By performing such control, the desired track address of the reproducing apparatus and the track address of the recording apparatus are made to coincide with each other, so that the editing points are exactly coincident.

For this purpose, it is necessary to precisely control the transmission timing of the control signal of the recording device. Conventionally, when a predetermined program is edited, the timing is adjusted by the following method. (A) Specify an editing start point and an editing end point for several cuts. (B) Edit the program. (C) Playback the recorded (edited) tape to see the deviation at the editing start point and the editing end point. (D) Manually input the deviation at the editing start point and the editing end point. (E) Re-edit the program and check if it has been adjusted correctly.

[0004]

However, in such a conventional apparatus, after actually performing the editing operation, the recorded video is advanced by frames, and the image position at which the recording is started and the recording are completed. It is necessary to manually adjust the timing after confirming how much the shifted image position deviates from the target image position.

[0005] In addition, when the timing is adjusted in this manner, there is a problem that a considerable amount of time must be spent on the adjustment because of trial and error.

The present invention has been made in view of such circumstances, and a first object of the present invention is to measure a transition time in a short time, thereby simplifying editing. The purpose is to use this measured transition time for accurate editing.

According to a first aspect of the present invention, a recording start transition time from a transmission of a suspension release command of a recording apparatus for recording information on a recording medium by transitioning from a paused state to a recording state until transitioning to the recording state. Or a recording transition time measuring device that measures a recording stop transition time from when a pause command is transmitted until recording stops .
The first display state and the second display state are repeated at predetermined intervals.
The playback device of the playback recording medium on which the adjustment signal is recorded
Device control means for controlling playback by an apparatus, and a playback device
Of the adjustment signal reproduced from the recording medium for reproduction by
A detection method for detecting a change point between the first display state and the second display state.
A first display based on the detection result of the output unit and the detection unit;
The recording device is synchronized with the change of the state and the second display state.
To output the pause release command, and
For the adjustment signal reproduced from the recording medium for reproduction
The first recording device control means for recording the
The first display state and the second display state based on the output result.
A pause command is sent to the recording device in synchronization with the change.
Output and recording medium for reproduction with respect to recording medium for recording
To pause the recording of the adjustment signal reproduced from the second
Recording device control means, and a recording device for controlling the recording device for reproduction.
The recording signal on which the adjustment signal reproduced from the recording medium is recorded.
A third recording device control means for reproducing the recording medium;
From the recording medium for recording by the control of the recording device control means of
First display state and second display state of reproduced adjustment signal
From the length of the state, the recording start transition time and recording stop transition time
Recording transition time calculating means for calculating the interval.
Sign.

According to a second aspect of the present invention, a recording transition according to the first aspect is provided.
Calculated by the recording transition time calculation means of the time measuring device
Record the recording start transition time and recording stop transition time
Storage means and a predetermined reproduction side image after the recording start transition time has elapsed.
Track address and recording start track address of the recording device
The pause release command to the recording device when the
Command for sending a command to send a pause
After the recording stop transition time has elapsed, the specified track
Address and recording stop track address of the recording device match.
To send a pause command to the recording device
And a pause command sending means.
You.

[0009]

According to the first aspect of the present invention, the reproducing apparatus uses
Display state of the adjustment signal reproduced from the recording medium of FIG.
In synchronization with the change point of the second display state
Command or pause command is output to the recording device,
Recording start transition time from the recorded result
And the recording stop transition time are calculated.

[0010] In a second aspect, the present invention provides the first aspect.
Recording start transition time and recording stop transition time
When the recording device is paused and unpaused,
It is controlled according to memory.

[0011]

FIG. 1 is a block diagram showing an embodiment of the present invention, in which an image signal is supplied from a reproducing apparatus 1 to a recording apparatus 2 and supplied to the recording apparatus 2. The image signal or the image signal reproduced by the recording device 2 can be monitored by the monitor 3. Both the recording-side device 2 and the reproduction-side device 1 are controlled by being supplied with a later-described timing signal from the editing device 4.

The reproducing apparatus 1 includes an external control signal communication apparatus 1a for transmitting and receiving signals to and from the editing apparatus 4, a mechanical control section 1b for driving a motor and a mechanical section, and a counter value generating section 1c for generating a signal indicating a tape running position. , Heads 1d and 1e, and an amplifier 1f.

The recording device 2 includes an external control signal communication device 2a for transmitting and receiving signals to and from the editing device 4, a mechanical control portion 2b for driving a motor and a mechanical portion, a head portion 2c,
System control unit 2 that switches amplification units 2d and 2e, switching units 2f and 2g, and switching units 2f and 2g according to a signal supplied from external control signal communication device 2a.
h.

The monitor 3 outputs a signal corresponding to the brightness of the screen by an optical sensor 3a attached to the screen, for example, a phototransistor or the like.
The signal supplied to the monitor 3 may be supplied directly from the recording device 2 to the binarizing section 4b of the editing device 4.

The editing device 4 comprises an editing microcomputer 4a, a binarizing section 4b for binarizing a signal supplied from the optical sensor 3a, and a memory 4c. The editing microcomputer 4a generates a control signal for measuring a recording start transition time and a recording stop transition time, a control signal for controlling editing, and the like, and the control signal and a signal from the binarization unit 4b. The recording start transition time and the recording stop transition time are measured based on the signal. The memory 4c stores the measured result, and the editing microcomputer 4
a performs editing based on this storage result.

As shown in FIG. 2A, in the apparatus configured as described above, as shown in FIG. 2A, an adjustment signal in which a white level and a black level are repeated every 90 frames (every 3 seconds) is recorded. The adjusted video tape is attached, and the recording video tape is attached to the recording device 2.

When a measurement start button (not shown) is pressed, the editing device 4 rewinds the video tape of the recording device 2 to the beginning. In this embodiment, it is assumed that the reproducing apparatus 1 and the recording apparatus 2 perform bidirectional communication with the editing apparatus 4. For this reason, the editing device 4 can know the rewinding state. However, if the recording device 2 is a one-way communication using infrared rays or the like, the editing device 4 cannot know the rewinding state. Rewind the tape manually.

After that, the editing device 4 puts the recording-side device 2 into the recording state, and further transitions to the recording pause state,
The reproduction side device 1 is controlled to a reproduction state. At this time, since the switching unit 2g of the recording device 2 is in the state shown in FIG. 1, the contents of the adjustment video tape shown in FIG.

The editing device 4 includes an optical sensor 3a on the monitor 3.
By reading the signal from the monitor and confirming that the level changes every 90 frames, it is possible to confirm that the signal of the adjusting tape is being reproduced on the monitor 3. Then, when the screen changes from white to black as shown in FIG. 2B, a temporary stop release command is transmitted to the recording device 2.

After the pause release command is transmitted, and a while after the screen display turns black, in this example, the pause command is transmitted to the recording side device 2 at a time 150 frames after the transmission of the pause release command. Send. This process is performed every time the display on the monitor 3 changes from white to black, and is performed five or six times. When the above processing is completed, the editing device 4 stops the reproducing device 1 and the recording device 2.

When the temporary stop release command is transmitted, the recording-side device 2 enters the recording state, but the recording is not immediately performed, but the recording start transition time Tre as shown in FIG.
The recording status is entered after c hours. Therefore, the black level is shown in FIG.
As shown in (d), the recording is started after the elapse of the recording start transition time Trec from the transmission of the pause release command. For this reason, although the black level is originally recorded in 90 frames, the recording start transition time Trec is shortened.
90-Trec) time.

Similarly, even if a temporary stop command is transmitted to the recording-side apparatus 2 during recording, the apparatus enters a temporary stop state after a recording stop transition time Tpse shown in FIG. 2C. Since the pause command was sent after the time corresponding to 150 frames has elapsed after the transmission of the pause release command, the white level is 6
0 frames are to be recorded. However, the black level is recorded longer by this time since the recording stop transition time Tpse time has elapsed since the transmission of the pause command to actually enter the pause state. Then, recording is performed for the time of (T60 + Tpse).

The recording videotape is thus:
Since the video as shown in FIG. 2E is recorded, the editing device 4 controls the recording-side device 2 to a reproducing state, reproduces the recording video tape, and reads the white level (from the signal read from the monitor 3). Measure the time of (T90-Trec) and black level (T60 + Tpse). And subtract these values from T90
Or T60 is subtracted to obtain the Trec and tpsE, and stores it in the memory 4c.

The above is the description of the method of measuring the recording transition time according to the first invention. Next, the operation of the editing apparatus for editing using the transition time thus obtained will be described with reference to FIG. I do.

In step 100, the recording start transition time Trec and the recording stop transition time Tpse measured as described above are stored, and in step 101, the recording-side apparatus 2 is set to the recording pause state. Then, in step 102, the reproduction side device 1 is operated (reproduced) directly or via the editing device 4 to determine the image at the editing start point, and the reproduction is paused.

Next, in step 103, the counter value of the editing start point in the reproduction pause state is stored, and further in step 1
In step 04, the reproduction-side apparatus 1 is operated (reproduced) to determine an editing end point, and the reproduction is paused.

In step 105, the editing device 4 stores the counter value in the reproduction pause state at the determined editing end point.

Thereafter, as shown in step 106, the editing device 4 winds the reproducing device 1 to about 10 seconds before the editing start point (a tape position passing the editing start point about 10 seconds after the reproduction is started). Return to playback state, step 1
As indicated by reference numeral 07, the editing apparatus 4 sets the recording start transition time Trec to be shorter than the time when the reproducing apparatus 2 is to pass the editing start point.
Just before, the recording-side device 2 that is in the recording paused state
Send a pause release command to

Then, as shown in step 108, the editing device 4 sets the recording device in the recording state before the recording stop transition time Tpse before the time when the reproducing device 1 is expected to pass the image at the editing end point. 1 is transmitted to the temporary stop command. Further, as shown in step 109, the editing device 4 confirms from the counter of the reproducing device 1 that the reproducing device 1 has passed the editing end point, and then temporarily suspends the reproduction of the reproducing device 1.

Since a series of processing is completed, when editing the next cut, step 110 determines this and the flow returns to step 102. When editing is completed, as shown in step 111. Then, the reproducing apparatus 1 and the recording apparatus 2 are stopped.

FIG. 4 is a timing chart showing the relationship between the time change of the recording apparatus 2 and the change in the tape running position when the editing is repeatedly performed. Recording is performed before time t1, and the recording pause state is continued. When the next editing point is determined, the information is supplied from the reproducing apparatus 1, and the editing apparatus 4 can know the tape position L1, which is the editing start position, based on the signal.

On the other hand, the editing device 4 manages the address of the tape position on which the reproducing device 1 is running. Therefore, it is possible to know at what time the tape position L1 can be made coincident with the editing start point by transmitting the temporary stop release command to the recording side device 2. For this reason, the editing device 4 transmits a temporary stop release command to the recording-side device 2 at the time point t2 which is earlier than the scheduled recording start time t3 by the recording start transition time Trec.

As a result, the pause state continues for a predetermined period of time, after which the state transits to a state called pre-roll reproduction, and continuity with the already formed track is ensured. Then, the time t when the recording start transition time Trec has elapsed.
From 3 the recording state is set. That is, the editing device 4 manages the track address of the reproducing device 1 and the track address of the recording device 2, and performs recording more than the scheduled recording start time so that recording is performed from the time when both track addresses match. At time t2 before the start transition time Trec,
A temporary stop release command is transmitted to the recording device 2.

Further, the editing device 4 determines the tape position L2 based on the signal (counter value) supplied from the reproducing device 1.
Is a editing end point, a pause command is transmitted to the recording-side apparatus 2 at time t4, which is earlier than the time by the recording stop transition time Tpse. Even after the time t5 when the transition time Tpse has elapsed, the video tape slightly advances and the recording state slightly continues. However, the recording stop transition time Tpse
Is the tape position at which recording is started next.

The recording device 2 is in a pause state. When the recording state is completed, the tape is rewound and wound in the recording direction by a small amount, and then the recording is paused at the tape position L3. . This tape position is determined such that the next time the pause is released, the tape position after a lapse of Trec from that time becomes L2.

Also, at the time of rewinding, since the rewinding amount is detected by the editing device 4, the editing device 4 transmits a pause release command at time t6 in consideration of the rewinding amount.
At the time t7 after the elapse of the recording start transition time Trec, the recording starts at the tape position immediately after the tape position L2 where the recording has been stopped earlier, and the continuity of the recording can be secured.

[0037]

As described above, the first aspect of the present invention relates to a playback apparatus.
The first state and the second state are reproduced,
Since the adjustment signal is recorded in the recording device and the recording start transition time and the recording stop transition time are obtained from the recording result at that time, there is an effect that the measurement can be accurately completed in a short time.

According to a second aspect of the present invention, there is provided a method according to the first aspect, wherein
The recorded recording start transition time and recording stop transition time are stored and recorded.
The pause and unpause of the recording device correspond to the memory
Control is performed, recording (editing) can be performed from a desired position, and accurate and rapid editing can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a waveform diagram showing an adjustment signal and its recording state.

FIG. 3 is a flowchart showing an operation at the time of editing.

FIG. 4 is a timing chart showing the operation timing of the recording apparatus.

[Explanation of symbols]

 Reference Signs List 1 playback side device 1a external control signal communication device 1b mechanical control unit 1c counter value generation unit 1d, 1e head unit 1f amplifier 2 recording side device 2a external control signal communication device 2b mechanical control unit 2c head unit 2d, 2e amplifier 2f, 2g Switching unit 2h System control unit 3 Monitor 3a Optical sensor 4 Editing device 4a Editing microcomputer 4b Binarization unit 4c Memory

Claims (2)

(57) [Claims] 1. A recording start transition time from a transmission of a pause release command of a recording apparatus for recording information on a recording medium by transitioning from a pause state to a recording state until transition to a recording state, or a pause. In a recording transition time measuring device for measuring a recording stop transition time from when a command is transmitted to when recording is stopped, an adjustment signal in which a first display state and a second display state are repeated at predetermined intervals is recorded. Playback of recording media for playback
Playback device control means for controlling playback by the device; and playback from the recording medium for playback by the playback device.
The first display state and the second display of the adjustment signal
Detecting means for detecting a state change point; and the first display state based on a detection result of the detecting means.
In synchronization with the change of the display state and the second display state.
Outputs the pause release command to the
The recording medium is reproduced from the recording medium for reproduction.
A first recording device control means for recording the adjusted signal for adjustment
And the first display state based on the detection result of the detecting means.
In synchronization with the change of the display state and the second display state.
The pause command is output to the
For a recording medium, reproduced from the recording medium for reproduction
Second recording device for temporarily stopping recording of the adjustment signal
Controlling means for controlling the recording device and reproducing from the recording medium for reproduction;
The recording medium on which the adjusted adjustment signal is recorded.
A third recording device control means for reproducing a body, and the recording device under the control of the third recording device control means.
The first table of the adjustment signal reproduced from the recording medium
From the length of the display state and the length of the second display state, the recording start transition
At the time of recording transition to calculate the time and the recording stop transition time
Recording transit time measuring device which is characterized in that a between arithmetic means. 2. The recording transition time measurement according to claim 1,
The above calculated by the recording transition time calculating means of the device
The recording start transition time and the recording stop transition time are stored.
Storage means for storing predetermined reproduction time of the reproduction side image after the lapse of the recording start transition time.
Recording start track address of the Symbol recording device and Kkuadoresu
Paused by the recording device at the same time
And pause releasing command sending means for sending a command, predetermined tiger reproduction side image after the recording stop transition time
Track address and the recording stop track address of the recording device.
At the same time, the pause
And a pause command sending means for sending a command .