JPH06311468A - Video floppy recording system - Google Patents

Abstract

PURPOSE:To perform editing even at the time of recording (at the time of photographing) by sending a recordable track set at a recording mode to a next free track by pushing an empty key. CONSTITUTION:In a state where a head 29 is positioned at the recordable track, whether or not the empty key 10f is pressed is judged next. Then, when the empty key 10f is pressed, a driving circuit 18 is controlled and the head 29 is moved to the next empty track. Also, when the empty key 10f is not pressed, whether or not a dubbing key 10c is turned ON is judged next. Then, when the dubbing key 10c is turned ON, the contents are read from the track of a video floppy 26 on a reproducing side selected by operating a forward feeding key 10a or a backward feeding key 10b beforehand by an RF signal reproducing circuit 2 and recorded in the empty track of the video floppy 27 on a picture recording side through a dubbing circuit 5 and a recording circuit 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording system capable of preventing an empty track from being recorded when a video signal is recorded on a video floppy disk, more specifically, when a video image captured by an electronic still camera is edited. The present invention relates to a video floppy recording system that can be suitably used.

[0002]

2. Description of the Related Art Conventionally, a video floppy recording method for shooting with an electronic still camera is an empty track order recording method, and there is a special skip mode recording method. The former is a method of packing empty tracks in order and recording. For example, as shown in FIG.
When 3 tracks and 3 tracks have been recorded and 1, 4 and 5 tracks are empty tracks, 1, 4 and 5 tracks are sequentially packed and recorded. The latter is a method of recording every other space, for example, if all tracks from 1 track to 6 tracks are vacant as shown in FIG. 3 (b), 1, 3 and 5 tracks are recorded and 2, 4 and 6 tracks are vacant. It is something to do.

[0003]

Since the above-mentioned recording methods cannot intentionally change the recording order indiscriminately, if the user wants to change the recording order to take a picture, once recording on a video floppy, dubbing or the like is performed. It is necessary to replace with. Further, when dubbing and editing from a plurality of floppies, the video floppies on the recording side are recorded in the order of recording, so that the reproduced video floppies are frequently replaced. Figure 3
(c) has two video floppies to be dubbed,
Dubbing 2, 5 and 6 tracks of Video Floppy A onto 1, 4 and 15 tracks of Video Floppy C and 1 of the other Video Floppy B
FIG. 7 is a diagram for explaining a dubbing method in the case where recording of 3 tracks and 2 tracks of video floppy C are recorded respectively. In such a case, it is necessary to replace the video floppies A and B with each other four times each time the video floppies C are dubbed onto tracks 2, 4, 10 and 15.

The object of the present invention is to solve the above-mentioned drawbacks of the prior art, and it is possible to intentionally change the recording order at the time of shooting, and it is not necessary to frequently replace the reproduction floppy during dubbing. To provide a good video floppy recording system.

[0005]

In order to achieve the above object, the video floppy recording system according to the present invention is designed such that an empty key for skipping recording of one track and a magnetic head automatically move to a recordable empty track position. When the empty key is operated in the recording mode state, the control means for sending the magnetic head to the next vacant track is included, and the vacant track in which recording is not performed can be arbitrarily selected.

[0006]

The present invention will be described in more detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a circuit of a player and a recorder adopting a video floppy recording system according to the present invention. This embodiment can be configured by connecting a video floppy recording / reproducing apparatus having one floppy disk drive and an electronic still camera having only a recording function. The reproducing device is only a circuit part related to reproduction, and the recorder is only a circuit part related to recording. Is described. In addition, even if one floppy disk drive of the video floppy recording / reproducing apparatus having two floppy disk drives is set to the reproduction mode and the other is set to the recording mode, the circuit as in the embodiment can be configured.

Servo circuits 8 and 14, drive circuits 4 and 16, motors 3 and 1 as circuits relating to the floppy disk drive on both the reproducing side and the recording side.
7. A loop circuit including the head drive circuits 1 and 18 and the PG pickup sensors 24 and 25 is provided. The servo circuit 8 sends a control signal to the drive circuit 4 based on the sync signal from the sync signal separation circuit 7. The drive circuit 4 drives the motor 3 to rotate the video floppy 26. The servo circuit 8 obtains a PG signal sent from the PG pickup sensor 24 as the video floppy 26 rotates, and drives the drive circuit 4 so that the video floppy has a predetermined rotation and phase. . The loop circuit including the servo circuit 14, drive circuit 16, motor 17, and PG pickup sensor 25 on the recording side also operates so as to be synchronized with the drive section on the reproducing side.

The head drive circuit 1 drives the head 28 and positions it on the track to be reproduced of 1 to 50 tracks of the video floppy 26. The head drive circuit 18 also positions the head 29 on the track to be recorded on tracks 1 to 50 of the video floppy 27. Servo circuit 8
The head drive circuit 1 is activated by a command from the main CPU 9, and the servo circuit 14 and the head drive circuit 1 are activated.
8 is activated by an instruction from the sub CPU 15. The main CPU 9 and the sub CPU 15 exchange information necessary for dubbing control with each other.

On the reproducing side, when the floppy disk drive is driven and the head 28 is positioned on a predetermined track, the FM-modulated baseband video signal is read by the RF signal reproducing circuit 2. The FM-modulated baseband video signal is corrected for distortion and the like by the dubbing circuit 5 and sent to the recording circuit 13 on the recording side. The recording circuit 13 records the FM-modulated baseband video signal on a predetermined track of the video floppy 27 which is synchronously rotated.

The RF signal (FM-modulated baseband video signal) output from the RF signal reproducing circuit 2 is simultaneously sent to the video signal processing circuit 16 and demodulated into a baseband video signal. This baseband video signal is sent to the monitor 21 via the sync signal separation circuit 7 and the video output terminal.
Is supplied to. A dubbing image is displayed on the monitor 21. On the other hand, the sync signal separation circuit 7 separates the sync signal from the baseband video signal and sends the separated sync signals to the servo circuits 8 and 14, respectively.

The main CPU 9 has a forward key 10a for sending the reproduction side track in the forward direction, a reverse direction key 10b for returning the reproduction side track in the reverse direction, and a predetermined track of the reproduction side floppy disk and a recording side. Dubbing key 10 for dubbing the signal when there is a head on each unrecorded track of the floppy disk
c, a cursor key 10d used for designating a frame in the case of multi-display, a recording key 10e for designating a recording mode, an empty key 10f for skipping one track, a recording track for sending one frame at a time A key input circuit 10 having a recording frame feed key 10g, a recording frame return key 10h for feeding a recording track backward by frame, and other keys is connected. Main CPU 9
Performs each process according to the input instruction from the key input circuit 10.

The video floppies 26 and 27 are provided with floppy presence / absence detection units 11 and 19 and erroneous erasure nail breakage detection units 12 and 20 at the drive portions thereof. The floppy presence detection units 11 and 19 are video floppy 2
Switches and the like for detecting whether or not 6 and 27 are attached. When the video floppies 26 and 27 are attached, the switches or the like are turned on and the information is notified to the main CPU 9 or the sub CPU 15. The erroneous erasure nail breakage detection units 12 and 20 are for detecting whether or not the attached video floppy has a nail breakage, and when it is a nail breakage, the detection signal is sent to the main CPU 9 or the sub CPU 15. Recording is blocked to prevent accidental erasure.

Next, the operation procedure of the recording method according to the present invention will be described with reference to FIG. When a power source (not shown) is turned on (step 1), the main CPU 9 and the sub CPU 15 determine whether or not a video floppy is mounted by signals from the floppy presence / absence detecting units 11 and 19 (step 2). If the video floppy is not loaded, a warning process to that effect is performed. If it is attached, the operation proceeds to auto pre-search (step 3). In the automatic pre-search, the heads 28 and 29 are video floppies 1 to 5
The presence or absence of the signal of each track is detected by scanning up to 0 tracks, and the presence or absence of the signal of each track is recorded in the main CPU 9. This allows the main CPU 9 to know which track of the video floppy the signal is recorded on and which track the signal is not recorded on.

Next, when the recording key 10e is pressed to set the recording mode (step 4), the main CPU 9 has the video floppy 2 mounted via the sub CPU 15.
Whether or not 7 is recordable is determined by taking in the result of the above auto-presearch and the signal from the erroneous erasing nail fold detection unit 20 (step 5). If all the tracks of the video floppy 27 have already been recorded or the nail is broken, it cannot be recorded. In such a case, the warning process is performed. When there is at least one recordable track instead of a broken nail, it is indicated that recording is possible by turning on an indicator lamp (not shown) (step 6). And the head 29
Is determined to be a recordable track (step 7). If not positioned, the head drive circuit 18 is controlled to the recordable track to move the head 29 to that position (step 8).

With the head 29 positioned up to the recordable track in this way, the empty key 10 is next.
It is determined whether or not f has been pushed down (step 9).
When the empty key 10f is pressed down, the drive circuit 18 is controlled to move the head 29 to the next empty track (step 10). When the empty key 10f is not pushed down, it is next determined whether or not the dubbing key 10c is turned on (step 11). When the dubbing key 10c is turned on, the contents of the track of the video floppy 26 on the reproducing side, which has been selected by operating the forward key 10a or the backward key 10b in advance, are RF-selected.
The signal reproducing circuit 2 records on the empty track of the video floppy 27 on the recording side through the read dubbing circuit 5 and the recording circuit 13 (step 12). Dubbing key 1
When 0c is not pressed, the state returns to the state before step 9.

After the empty key 10f is pressed to send the head to the next empty track, or the dubbing key 1
After it is determined that 0c has not been pressed, it is again determined whether the empty key 10f has been pressed. As a result, it is possible to send any number of recordable empty tracks. In this embodiment, the case where the main CPU is provided on the reproducing side has been described, but it goes without saying that this main CPU can be similarly implemented even if it is provided on the recording side.

[0017]

As described above, in the video floppy recording method according to the present invention, for example, when shooting with an electronic still camera, the recording mode is set in consideration of the change of the shooting order afterward. By pressing the empty key, the available tracks can be sent to the next empty track, enabling editing even during recording (at the time of shooting). For example, when another image is to be recorded later on the empty track of track number 9, only the empty track of track number 9 can be skipped at the time of shooting in the conventional recording method. According to this, it becomes possible to suspend recording of any recordable track.

When dubbing a large number of video floppies onto one video floppy, the recorded contents of each track of a certain video floppy to be dubbed should be dubbed to all desired tracks of the recording-side floppy and then dubbed. Since the recorded contents of each track of other video floppies can be dubbed to other desired tracks on the recording side, the number of times to replace multiple video floppies to be dubbed can be minimized, and the number of operations during dubbing can be reduced. be able to. For example, if there are three video floppies to be dubbed, it can be edited by replacing them twice.

[Brief description of drawings]

FIG. 1 is a circuit block diagram showing an embodiment of circuits of a reproducing device and a recording device to which a video floppy recording system according to the present invention is applied.

FIG. 2 is a flow chart for explaining the method of the present invention.

FIG. 3 is a diagram for explaining a conventional recording method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Head drive circuit 2 ... RF signal reproduction circuit 3 ... Motor 4 ... Drive circuit 5 ... Dubbing circuit 6 ... Video signal processing circuit 7 ... Synchronous signal separation circuit 8 ... Servo circuit 9 ... Main CPU 10 ... Key input circuit 15 ... Sub CPU 21 ... Monitor 10f ... Empty key

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[Procedure amendment]

[Submission date] December 27, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

Claims (1)

[Claims] 1. An empty key for skipping recording of one track and a next empty space when the empty key is operated in a recording mode in which the magnetic head is automatically brought to a recordable empty track position. A video floppy recording system characterized by including a control means for sending the magnetic head to a track so that an empty track on which recording is not performed can be arbitrarily selected.