JPS60242570A - Information signal editing method - Google Patents

Abstract

PURPOSE:To edit an information signal in a short time through easy operation by applying jumping pulses so that two signal converting means of two discoid record carriers are scanned in a phase-locked state, and placing the 2nd signal converting means in a recording state when the 2nd converting means is at a specific position and also stopping the application of jumping pulses. CONSTITUTION:A desired position on a recorded disk 40 is reproduced by a reproducing circuit 44 and track jump pulses (TJP) froma controller 48 are applied to a tracking servo circuit 43 to hold a heat at the desired position. Then, a disk to be recorded is read by a reproducing circuit 53 and pulses TJP are applied from the controller 48 to a tracking servo circuit 52 to hold the head at a desired position. A recording command signal is applied to a laser control circuit 50 and pulse TJP are cut off, and then recording from the disk 40 to the disk 57 is started. Consequently, the information signal is edited in a short time through the easy operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a first disk-shaped record carrier (hereinafter referred to as a disk).
This method relates to a method of recording a playback signal from a playback device using a second disk recording device, for example, a method of recording a video signal from a disk on which a video signal has been recorded to a recordable disk, and is particularly suitable for use in an editing device. Regarding recording methods.

Conventional configuration and its problems Conventionally, VTRs have been used to edit video signals.

In the case of a VTR, since magnetic tape is used, it usually takes a few seconds for the VTR to start up properly, and even during editing operations, VTRs first locate the beginning of the playback signal and then send out the playback signal. After the recording VTR performs rewinding (called pre-roll), they start at the same time, and after a desired signal is stably reproduced, editing and recording operation begins. Therefore, cueing the editing position took a long time and was inefficient.

OBJECTS OF THE INVENTION The present invention provides an information recording method that simplifies editing and recording operations and allows editing of video signals and the like in a very short time.

Structure of the Invention The information signal editing method of the present invention comprises: reproducing information signals from a first position of a first disc-shaped record carrier on which an information signal has been recorded along a spiral recording track; When recording from a second position of a second disk-shaped record carrier having A jumping pulse is applied to each of the first and second signal converting means of the shaped record carrier in a reproducing state so as to scan all the same recording trunks repeatedly and in phase synchronization starting at the first and second positions, respectively. After that, when the second signal converting means is located at the second position, the second signal converting means is changed to a recording state, and application of each jumping pulse is stopped. It is.

DESCRIPTION OF THE EMBODIMENTS One embodiment of the present invention will be fully described below with reference to the drawings. FIG. 1 shows a disc on which a video signal has been recorded. 1 is a disk, and 2 is a track on which a signal is recorded. Along the direction of arrow 3, the first frame is on the track @) between point A and point B, the second frame is on the track (b) between point B and 0, and the second frame is on the track from point 0 to point D along the direction of arrow 3. The third frame is continuously recorded on the track (c) between the two. When reproducing this disc, the recorded video signal can be reproduced by tracking the laser beam rack 2, which is a signal converting means, along the arrow 3 using a well-known method. Further, track from point A in Figure 1 (
It is also possible to play back the entire first frame of the video signal recorded on the track (B) and jump the laser beam from point B to point A. (It's called a jump.)

Next, in FIG. 2, reference numeral 20 is a recordable disk, and a spiral trunk 21 called a pre-group is provided in advance, so that a video signal can be recorded along a track 21 from a point P. 23 is a mark called a V mark indicating the rotational phase of the disk. 1st
FIG. 3 shows a timing chart when the video signal shown in the figure is recorded and the video signal is edited and recorded from the disk to the recordable disk shown in FIG. 2.

In FIG. 3, 3-1 indicates a video signal recorded on the disc 1. Di name 1 is scanned from point A to point B, and frame (a) is repeatedly reproduced between times t1 and t3. For this reason, a trunk jump pulse shown in 3-2 is given to the laser beam scanning the disk 1,
This shows that the track jumps from point B in Figure 1 to the mermaid. This track jump pulse occurs at time t4.
When it is no longer applied at t5, the laser beam reproduces track 2 continuously from point A.

Now, a case will be described in which the video signals of frames ((), (b), (c)) recorded on the disc of FIG. 1 are recorded from point P on the recordable disc of FIG. 2 in the direction shown by arrow 22. The disk 20 is rotated in synchronization with the disk 1, so that the point large on the disk 1 and the point P on the disk 20 are at the same position at the same time with respect to the respective reproduction laser beams and recording laser beams. controlled to pass.

Between times t and t3 shown in 3-3.3-4 in FIG. 3, the laser beam scanning the track 21 of the disk 20 is not a recording laser beam, but 3-3
Recording is started from the point in time when the pulse shown in FIG. is recorded on the trunk of the disc 20. With this configuration, editing and recording can be performed from the disc on which signals are recorded to the recordable disc in a desired order.

FIG. 4 shows an embodiment of a device for realizing the information signal editing method of the present invention. 40 is a disk on which a video signal is recorded, 41 is a motor that controls the full rotation of the disk 4o. 42 is a The signal from the disk 4o is detected by pink-up, and the signal is reproduced by a reproduction circuit 44. 46 is a synchronization signal separation circuit, which is synchronized with the reproduction synchronization signal of the disk 4o from which the synchronous separation circuit 46 comes out. Signal generator 5
The reference synchronization signal, which is the output of 8, is phase-compared by the disc motor servo circuit 45, and
: Control and operate with constant phase.

43 is a tracking servo circuit, and pickup 4
When the controller 48 track jump pulse output is input to the tracking servo circuit 43, the pickup 42 performs a track jump operation.

The video signal which is the output of the reproduction circuit 44 is sent to the modulation circuit 49.
and is input to the laser control circuit at 5o. 51
The head at the end records all the signals on the recording disk 57,
It is possible to play. That is, when a recording command signal is input from the controller 48 to the terminal 48-2 of the laser control circuit 5o, the output of the laser beam irradiated from the optical head 51 to the recording disk 57 is modulated and the output is increased. , the signal is recorded on the track of the recording disk 5. A tracking servo circuit 52 controls the optical head 51 to record and reproduce signals on the trunk of the recording disk 57. 53 is a reproducing circuit, which is an amplification circuit for the detection signal of the optical head 51. 5
Reference numeral 9 denotes a V mark sensor for detecting the circuit phase of the recording disk, which detects a rotation synchronizing signal called V mark 23 in the disk shown in FIG. 54 shapes the waveform of the output of the V mark sensor 59;
A disk motor servo circuit 65 controls the disk motor 56 to keep the phase of the output of the synchronizing signal generator 68 and the output of the V mark sensor 59 constant.

By configuring as described above, the recorded disc 40
The recording disk 6 and the recording disk 6 rotate in synchronization, and editing and recording operations can be performed according to the timing chart shown in FIG. That is, 3-1 in FIG. 3 is the output of the reproducing circuit 44 in FIG. 4, and 3-2 below is the output 48-
1, 3-3 corresponds to 48-2, and 3-4 corresponds to 48-3.

Next, to explain the operation, first, the recorded disc 40
The reproducing circuit 44 reproduces the address information, etc. recorded at the desired position of the
48-1 is applied to the tracking servo circuit 43 at a desired position, and the signal is put on standby. Next, the address information recorded on the track to be recorded on the recording disk No. 67 is read out using the reproducing circuit 53, and the track jump output No. 48-3 is applied to the tracking servo circuit 52 at a desired position. The system will be placed on standby. Next, when the full recording command signal is applied to 48-2 and the track jump pulse output of 48.-1° 48-3 is cut off, recording of signals from the recorded disk 40 to the recording disk 57 is started. After locating the beginning of both the recorded disc and the recording disc, signal recording can be started immediately.
Unlike a VTR, there is no need to take time to cue up or take into account pre-roll time. Furthermore, the ``2'' cueing operation can be performed automatically by searching address information prerecorded on the disc, making it even more efficient.

Effects of the Invention As described above, according to the present invention, it is possible to easily edit and record signal cues, standby operations, start recording, etc. without considering the pre-roll time as in the case of a VTR, which greatly improves the efficiency of editing operations. can be increased to

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a recorded disc on which a video signal is recorded, Fig. 2 is a schematic diagram of a recordable disc for recording, and Fig. 3 is a schematic diagram of a recordable disc for recording.
The figure is a timing chart of the editing and recording operation according to the present invention.
FIG. 4 is a block diagram of an embodiment of an editing device comprising a disk playback device and a disk recording/playback device according to the present invention.
6...Motor, 42.61...Big amplifier, 43.62...Tracking servo circuit,
44...Reproduction circuit, 48...Controller, 49...Modulation circuit, 50...Laser control circuit. Figure 2 Figure 3

Claims (1)

[Claims] A reproduced information signal from a first position of a first disc-shaped record carrier, in which the information signal was recorded along a spiral recording trunk, is reproduced from a second position of a second disc-shaped record carrier having a spiral recording track. When recording from the position, the first and second disc-shaped record carriers are rotated in phase synchronization, and the first and second signal conversion means of the first and second disc-shaped record carriers are After applying and holding a jumping pulse to repeatedly scan the same recording track starting at the first and second positions in a reproducing state in a phase-synchronized manner, the second signal converting means moves to the second position. At the same time as changing the second signal converting means to a recording state from the time of positioning,
An information signal editing method characterized by stopping application of each jumping pulse.