JPH01178185A - Re-editing device for still picture recorder - Google Patents

Abstract

PURPOSE:To perform the re-edit of an image by filling the image in sequence of track number by erasing the record content of a recorded track after storing the record content of the recorded track at the next position of a detected unrecorded track in a memory, and writing the storage content of the memory on the unrecorded track. CONSTITUTION:When the unrecorded track on a magnetic disk 1 is detected, the recorded track at the next position of the unrecorded track is detected, and the record content of the recorded track is read and transferred to the memory 16, then, it is stored in the memory transiently. And the record content of the recorded track is erased, and the storage content of the memory 16 is written and re-recorded on the unrecorded track. In such a way, it is possible to perform the re-editing of the image recorded on a recorded magnetic disk set in a state where a part of the disk becomes the unrecorded track by erasure, so-called a toothless state, by filling in sequence of the track number.

Description

Detailed Description of the Invention <Industrial Application Field> The present invention is installed in a still image recording device such as a still video camera for recording still images or a still video player for reproducing still images, and is used to record images on a magnetic disk. The present invention relates to a re-editing device that re-edits recorded tracks and recorded tracks.

<Prior art> In recent years, still video cameras that use solid-state imaging devices such as CCDs to process image signals from the solid-state imaging devices and record them on magnetic disks, and even read out image signals from recorded magnetic disks, have been developed. A still video player that reproduces images on a CRT display or the like has been commercialized (see Japanese Patent Application Laid-open No. 194677/1983).

A magnetic disk called a still video floppy has 50 concentric tracks for recording images, and one still image is recorded every two tracks in the case of frame recording, and one track in the case of field recording. Analog recording is possible, and a total of 25 to 50 still images can be recorded.

Incidentally, one of the advantages of a still video camera is that since the recording medium is a magnetic disk, the magnetic recording of the track can be erased for each image and the track can be reused.

Therefore, the still video camera itself or the still video player is equipped with an erasing circuit to provide an erasing function (see Japanese Patent Application No. 103611/1982).

<Problem to be solved by the invention> However, when unnecessary images on a magnetic disk are erased using such an erasing function, a non-recorded track is created on the magnetic disk, and this non-recorded track can be reused. However, there was a problem in that the image recordings were not arranged in the order of track numbers, causing inconvenience during playback.

The present invention has been made in view of these conventional problems, and it is possible to track images recorded on a recorded magnetic disk that has become partially unrecorded due to erasure, resulting in a so-called toothless state. The purpose of the present invention is to provide a re-editing device capable of re-editing in numerical order.

<Means for Solving the Problems> Therefore, as shown in FIG. recorded track detection means for detecting recorded tracks; transfer means for reading the recorded content of the detected recorded track and transferring it to a memory for temporary storage; and erasing means for erasing the recorded content of the recorded track. , and re-recording means for writing the stored contents of the memory into the non-recorded track, thereby configuring a re-editing device for a still image recording device.

In the above configuration, when a non-recorded track on the magnetic disk is detected, a recorded track next to the non-recorded track is detected, and the recorded content of this recorded track is read and transferred to the memory. After being temporarily stored, the recorded content of the recorded track is erased, and the stored content of the memory is written to an unrecorded track to be rerecorded. This results in
Images recorded on a recorded magnetic disk, which has become partially unrecorded due to erasure, can be re-edited by sorting them in the order of track numbers.

<Example> An embodiment of the present invention will be described below.

FIG. 2 shows a system diagram of the still image recording device.

In the figure, ■ is a magnetic disk on which image signals of still images are recorded for each track, 2 is a servo motor for rotationally driving the magnetic disk 1, 3 is a servo circuit that controls the servo motor 2, and 4 is for the magnetic disk 1. A magnetic head 5 for recording, reproducing or erasing records on a magnetic disk l.

This is a head drive mechanism for moving the head to a track to be reproduced or erased.

6 is an optical lens that forms an optical image of a subject; 7 is a solid-state image sensor that photoelectrically converts the optical image formed on the light-receiving surface by the optical lens 6 and outputs an analog image signal;
CD, 8 is a process circuit that performs processing such as color separation based on the image signal from CCD 7.

Reference numeral 9 denotes an FM modulation circuit for FM modulating the image signal inputted from the process circuit 8 through the a contact of the switch SWI;
0 is a recording amplifier that amplifies the FM modulated image signal. This recording amplifier 10 is connected to the magnetic head 4 via the a contact of the switch SW2.

11 is a reproduction amplifier that amplifies the image signal read from the magnetic disk 1 via the magnetic head 4; 12 is an FM demodulation circuit that demodulates the image signal that has been FM modulated and recorded;
3 decodes (encodes) the demodulated image signal to N
A decoder that creates a TSC image signal, 14 is an NTS
This is a CRT display that receives a C format image signal and projects a still image.

15 is an A/D converter that A/D converts the image signal from the FM demodulation circuit 12, 16 is a memory that temporarily stores the A/D converted image signal, and 17 is the image signal stored in the memo January 6. This is a D/A converter that performs D/A conversion. This D/A
The converter 17 is connected to the FM modulation circuit 9 of the recording system via the b contact of the switch SW1.

Reference numeral 18 denotes an erasing circuit, which is connected to the magnetic head 4 via the b contact of the switch SW2.

19 is a system controller, which includes a servo circuit 3, a head drive mechanism 5. Switch SW1. Controls SW2 etc.

20 is an envelope detection circuit that detects an envelope from the image signal from the reproduction amplifier 11 and inputs it to the system controller 19.

Next, the effect will be explained.

During recording, both switches SWI and SW2 are switched to the a contact, and when the release (not shown) is operated at this time, the image signal is taken in from the C0D7, the process circuit 8 performs processing such as color separation, and the FM The signal is FM modulated by the modulation circuit 9, amplified by the recording amplifier 10, and recorded on the non-recording track of the magnetic disk 1 via the magnetic head 4. After recording, the head drive mechanism 5 sends the magnetic head 4 to the next non-recording track on the magnetic disk 1.

During reproduction, the head drive mechanism 5 moves the magnetic head 4 to the track of the image to be reproduced on the magnetic disk 1, reads out the image signal from the magnetic disk 1 via the magnetic head 4, amplifies it with the reproduction amplifier 11, and outputs the FM signal. The demodulation circuit 12 demodulates the signal, and the decoder 13 converts it into an NTSC image signal and outputs it, causing the CRT display 14 to reproduce a still image.

When erasing, the head drive mechanism 5 sends the magnetic head 4 to the track of the image to be erased on the magnetic disk 1, and the switch SW2 is switched to the b contact. Then, the erasing circuit 18 erases the magnetic recording on the track.

If you want to re-edit the images recorded on the recorded magnetic disk 1, which has become a so-called "unrecorded" state due to erasure, by rearranging the images in the order of track numbers, operate a re-editing switch (not shown). .

Then, the control of the system controller 19? Under Il, the re-editing routine shown in the flowchart of FIG. 3 is executed to perform re-editing.

In step 1 (indicated by St in the figure; the same applies hereinafter), first, the track number TN is initialized to O.

In step 2, the track number TN is incremented by 1, and in the next step 3, the head drive mechanism 5 moves the magnetic head 4 to the track of that number TH on the magnetic disk 1. Then, in step 4, the magnetic head 4. By detecting the envelope by the envelope detection circuit 20 via the reproduction amplifier 11, it is determined whether or not it is a non-recording trunk.

If it is not a non-recording track, proceed to step 5, determine whether the track number TN is the maximum value 50, and set TN=5.
If it is 0, this routine ends.

If it is less than 50, return to step 2.

That is, the head drive mechanism 5 drives the magnetic head 4 in track number order (from the outside in the radial direction of the magnetic disk 10 to the inside).
to the magnetic head 4. A non-recorded track is detected by detecting an envelope by an envelope detection circuit 20 via a reproduction amplifier 11.

When a non-recorded track is detected, the process proceeds to step 6, where the track number TN is stored as T No .

Therefore, steps 2 to 6 together with the envelope detection circuit 20 constitute a non-recorded track detection means.

Next, in step 7, the track number TN is incremented by 1, and in step 8, the head drive mechanism 5 moves the magnetic head 4 to the track of that number TN.

Then, in step 9, the magnetic head 4. By detecting the envelope by the envelope detection circuit 20 via the reproduction amplifier 11, it is determined whether the track is a recorded track or not.

If it is not a recorded track, proceed to step 10, determine whether the track number TN is the maximum value 50, and set TN=
When the number is 50, this routine ends.

If it is less than 50, return to step 7.

That is, after detecting a non-recording track, the magnetic head 4 is sent to the next track of the non-recording track, and the magnetic head 4.
By detecting the envelope by the envelope detection circuit 20 via the reproduction amplifier 11, the next recorded track is detected.

Therefore, steps 7 to 10 together with the envelope detection circuit 20 constitute recorded track detection means.

When a recorded track is detected next to the unrecorded track,
Proceed to step 11 and subsequent steps for re-editing.

In step 11, an image signal is read from this recorded track on the magnetic disk 1 via the magnetic head 4, amplified by the reproduction amplifier 11, and demodulated by the FM demodulation circuit 12. Then, the demodulated image signal is sent to the A/D converter 1.
5, the data is A/D converted, transferred to the memory 16, and stored at - time. Therefore, this step 11 constitutes a transfer means.

Next, the process proceeds to step 12, where the switch SW2 is switched to the b contact, and the erasing circuit 18 erases the magnetic recording of this recorded track on the magnetic disk 1. Therefore, this step 12 constitutes an erasing means.

Next, the process proceeds to step 13, where the magnetic head 4 is sent in the opposite direction via the head drive mechanism 5 to move to the non-recording track with track number TN0.

Next, the process proceeds to step 14, with the switch SWI set to the B contact and the switch SW2 set to the A contact, an image signal stored in the memory 16 is read out, and the D/A converter 17 converts it into an FM signal. Via the modulation circuit 9 and the recording amplifier 10, the magnetic head 4 writes and re-records on the non-recording track of the magnetic disk 1. Therefore, this step 13
．． 14 constitutes a re-recording means.

Next, the program proceeds to step 15, sets the track number TN to TNo, returns to step 2, and repeats the same process.

It should be noted that this refresh function may be installed in a still video camera, or in a still video player separate from the still video camera.

<Effects of the Invention> As explained above, according to the present invention, images recorded on a recorded magnetic disk whose parts have become unrecorded tracks due to erasure and are in a so-called unrecorded state are arranged in the order of track numbers. This is advantageous because it allows re-editing, and the imaging records can be arranged in the order of track numbers.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing the configuration of the present invention, FIG. 2 is a system diagram of a still image recording apparatus showing an embodiment of the present invention, and FIG. 3 is a flowchart of a re-editing routine.

Claims (1)

[Claims] A still image recording device that records an image signal of a still image for each track on a magnetic disk, comprising: a non-recorded track detection means for detecting a non-recorded track on the magnetic disk; and a recorded track next to the detected non-recorded track. a recorded track detecting means for detecting the recorded track; a transferring means for reading the recorded content of the detected recorded track and transferring it to a memory for temporary storage; an erasing means for erasing the recorded content of the recorded track; A re-editing device for a still image recording device, comprising: re-recording means for writing the stored contents of the memory onto a track.