JPH05176283A - Picture signal processing unit - Google Patents

Abstract

PURPOSE:To prevent the cross reference between a picture signal and an information signal recorded in an area other than a recording area with a picture signal recorded thereon by raising warning to the edit onto a recording medium when a information signal other than the picture signal is recorded onto an optional recording area on the recording medium and inhibiting the direct edit to the recording medium. CONSTITUTION:A picture signal discrimination circuit 5 discriminates whether or not a signal recorded on an optional track of a VF 21 is a picture signal and an RF detection circuit 3 discriminates whether or not an optional track is an unrecorded track and whether or not a cue signal is recorded on a cue track. A system controller 11 makes processing of warning display or edit inhibit based on the result of discrimination.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image signal processing device, and more particularly to an image signal processing device having an editing function.

[0002]

2. Description of the Related Art As an image signal processing apparatus, for example, a still image recording / reproducing apparatus usually uses a writable video floppy disk as a recording medium, and the same image signal recorded on the video floppy disk is used. It is possible to edit the image file to be transferred to another area of the video floppy disk. A block diagram of FIG. 4 shows an example of the configuration of a conventional still image recording / reproducing apparatus in which an image file is edited by temporarily storing an image signal reproduced from a video floppy disk in a memory.

To edit a still image with the still image recording / reproducing apparatus shown in FIG. 4, the following operation is performed.

First, a floppy disk (hereinafter referred to as "V
The signal recorded on the magnetic head 1 is referred to as "F".
The reproduction amplifier 1 amplifies the reproduction by the reproduction amplifier 1 through the switch 18 which is connected to the reproduction side (P side in the figure) and is switched and controlled by the system controller 11. Among the signals amplified by the reproduction amplifier 1, the ID signal is DPSK
DPSK demodulation is performed by the demodulation circuit 2 and input to the system controller 11. Further, the image signal is the FM demodulation circuit 4
FM demodulation is carried out, the sync signal is separated by the sync separation circuit 6, and is input to the system controller 11. The luminance signal Y is A / D converted by the A / D converter 7 and stored in the memory 9. The line-sequential color difference signal C is converted to A / D by the A / D converter 8.
It is D-converted and stored in the memory 9. The image signal stored in the memory 9 is read by the system controller 11 and displayed on the display unit 22.

When a voice signal is recorded in the VF 21, it is reproduced by a voice reproducing circuit (not shown), and when a data signal is recorded, the system controller 11 decodes the data.

When the user confirms the content of the reproduced image and the reproduced image is an image to be edited, the user operates the keyboard 24 to set the start of the editing operation. , System controller 11
Reads out the image data forming the image from the memory 9. The image data read from the memory 9 is D / A converted by the D / A converters 12 and 13, amplified by the amplifier 14, and output as a composite image signal from the output terminal 23. The signals 12 and 13 are input to the FM modulation circuit 16 and are FM-modulated respectively, and then frequency-multiplexed. The image signal output from the FM modulation circuit 16 is created by the system controller 11 and
The switch 18 which is composed of the ID signal DPSK-modulated by the SK modulation circuit 15 and the recording amplifier 17 and is switched to the recording side (R side in the figure) by the system controller 11.
The data is recorded on a designated track on the VF 21 by the magnetic head 19 via the.

[0007]

When a VF including a track on which an audio signal corresponding to an image signal is recorded is edited by using such a conventional still image recording / reproducing apparatus, the audio signal is recorded. Since the ID signal indicating the track on which the image signal corresponding to the audio signal recorded on the track is recorded is attached to the track, the track is recorded on the track indicated by the ID signal. When the image signal is moved to another track, the track number of the new track is added to the track number indicated by the ID signal added to the image signal, so that even if the audio signal is reproduced, It becomes impossible to reproduce the image signal corresponding to.

Further, even when the data signal corresponding to the image signal or the data is recorded on the cue track, when the track on which the image signal is recorded is moved, the data signal or the cue track is recorded. There is a drawback in that the content of data and the content of the image signal cannot be associated with each other.

The present invention has been made in order to solve the drawbacks of the conventional image signal processing apparatus, and when the information signal other than the image signal is recorded in an arbitrary recording area on the recording medium, By issuing a warning for performing an editing operation on the recording medium and directly prohibiting the editing operation on the recording medium, the information signal and the image recorded in the recording area other than the recording area in which the image signal is recorded are displayed. An object of the present invention is to provide an image signal processing device capable of preventing the correspondence with signals from being lost.

[0010]

An image signal processing apparatus according to the present invention is an image signal in which an image signal and another information signal corresponding to the image signal are recorded on recording media which can be recorded in different recording areas. In the apparatus for processing the above, a discriminating means for discriminating whether or not another information signal corresponding to the image signal is recorded in an arbitrary recording area on the recording medium is provided.

Further, there is provided warning signal generating means for generating a warning signal when the judging means judges that another information signal corresponding to the image signal is recorded in an arbitrary recording area on the recording medium. It is a thing.

Further, when the discriminating means discriminates that another information signal corresponding to the image signal is recorded in an arbitrary recording area on the recording medium, it is recorded in the arbitrary recording area on the recording medium. It is provided with a prohibition means for prohibiting the recording of the image signal in the other recording area on the same recording medium.

[0013]

With the above configuration, it is determined whether or not another information signal corresponding to the image signal is recorded in an arbitrary recording area on the recording medium. Therefore, a warning is displayed according to the determination result,
It becomes possible to take measures such as prohibiting the editing operation on the recording medium or transmitting the determination result to another device, which correspond to the image signals recorded in different recording areas on the recording medium and the image signals. It is possible to prevent the correspondence with the other information signal from being lost.

When it is determined that another information signal corresponding to the image signal is recorded in an arbitrary recording area on the recording medium, a warning signal is generated, so that the user can perform the recording according to the warning signal. The editing operation on the medium can be stopped, and it is possible to prevent the correspondence between the image signals recorded in different recording areas on the recording medium and the other information signals corresponding to the image signals from being lost. ..

Further, when it is determined that another information signal corresponding to the image signal is recorded in an arbitrary recording area on the recording medium, the image signal recorded in the arbitrary recording area on the recording medium is detected. Since the recording in the other recording area on the same recording medium is prohibited, the correspondence between the image signals recorded in the different recording areas on the recording medium and the other information signals corresponding to the image signals, respectively. It is possible to prevent collapse.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the arrangement of a still image recording / reproducing apparatus as an embodiment of the present invention.

In FIG. 1, the VF 21 is rotationally driven by the motor 20. A control signal is supplied from the system controller 11 to the motor 20, and the rotation operation of the motor 20 is controlled by this control signal.

A magnetic head 19 is disposed on the VF 21, and the magnetic head 19 records and reproduces a signal with respect to the VF 21. The magnetic head 19 is a switch 18
Of the switch 18, one switching contact (P side in the drawing) of the switch 18 is connected to the input terminal of the reproduction amplifier 1, and the other switching contact (R side of the drawing) is connected to the recording amplifier 1.
7 is connected to the output terminal. A control signal for controlling the switching operation is supplied from the system controller 11 to the switch 18.

The output terminal of the reproduction amplifier 1 is connected to the input port of the system controller 11 and the DPSK demodulation circuit 2 and R.
The input terminals of the F detection circuit 3 and the FM demodulation circuit 4 and the image signal input terminal 32 of the image signal discrimination circuit 5 shown in FIG. 3 are connected in parallel.

The DPSK demodulation circuit 2 converts the ID signal into DPSK.
Demodulate.

The RF detection circuit 3 is a circuit for determining whether or not a signal is recorded on an arbitrary track on the VF 21, and it extracts a predetermined frequency band from the reproduced signal, detects it, and then detects it at a predetermined level. The presence or absence of a signal is determined by comparing with a reference value.

The image signal discrimination circuit 5 is a circuit for discriminating whether or not the signal reproduced by the magnetic head 19 is an image signal. As shown in FIG. 3, the image signal discrimination circuit 5 is composed of a dropout detection circuit 33, a counter 35, and a comparator 36. The sync signal input terminal 31 of the image signal discrimination circuit 5 is connected to the count terminal of the counter 35, and the image signal input terminal 32 is connected to the input terminal of the dropout detection circuit 33. The output terminal of the dropout detection circuit 33 is connected to the enable terminal of the counter 35, and the output terminal of the counter 35 is connected to the input terminal of the comparator 36. The output terminal of the comparator 36 is used as the output terminal 37 of the image signal discrimination circuit 5, and is connected to the input port of the system controller 11.

The FM demodulation circuit 4 is a circuit for FM demodulating an image signal.

Although not shown in FIG. 1, an audio reproduction circuit is connected to the output terminal of the reproduction amplifier 1, and the output terminal of the audio reproduction circuit is connected to the speaker (not shown) and the input port of the system controller 11. It is connected.

The output terminal of the DPSK demodulation circuit 2 is connected to the input port of the system controller 11, and the output terminal of the RF detection circuit 3 is also connected to the input port of the system controller 11. In addition, the image signal discrimination circuit 5
The output terminal 37 shown in FIG. 3 is also connected to the input port of the system controller 11.

Further, the clear signal input terminal 34 of the counter 35 shown in FIG.
Every time the VF21 makes one rotation, the system controller 11
A clear pulse signal is supplied from.

The output terminal of the luminance signal Y of the FM demodulation circuit 4 is connected to the input terminals of the sync separation circuit 6 and the A / D converter 7, and the output terminal of the line-sequential color difference signal C is the input of the A / D converter 8. It is connected to the terminal.

The sync separation circuit 6 separates the sync signal from the luminance signal Y of the image signal and determines the sync signal as the image signal discrimination circuit 5.
Input to the sync signal input terminal 31 and the input port of the system controller 11 shown in FIG.

The output terminals of the A / D converters 7 and 8 are connected to the input terminals of the memory 9, respectively, and the output terminals of the memory 9 are connected to the input terminals of the D / A converters 12 and 13, respectively. The input / output terminal of the memory 9 is a digital signal processor (hereinafter abbreviated as “DSP”) 1
0 is connected to the input / output terminals, and the DSP10
The input / output terminal of is connected to the input / output port of the system controller 11.

The operation of the DSP 10 is controlled by a control signal from the system controller 11, and a data writing operation to the memory 9 and a noise reduction processing operation in data,
During image display, processing operations such as simultaneous conversion of line-sequential color-difference signals, quadrature two-phase modulation of color-difference signals by color subcarriers, addition of synchronization signals and burst signals to composite image signals, and movement in VF21 during editing A processing operation such as line-sequentialization of color difference signals, which is performed when the image signal is recorded on the previous track, is performed.

The output terminal of the D / A converter 12 is an amplifier 14
Is connected to the input terminal for the luminance signal of and the input terminal for the luminance signal of the FM modulation circuit 16. Also,
The output terminal of the D / A converter 13 is connected to the color difference signal input terminal of the amplifier 14 and the color difference signal input terminal of the FM modulation circuit 16.

The amplifier 14 synthesizes the input luminance signal Y and color difference signal C, outputs the result from the output terminal 23, and supplies it to an external device such as a monitor device.

The FM modulation circuit 16 FM-modulates the luminance signal Y and the line-sequential color difference signal C, respectively, and then frequency-multiplexes to form and output a recorded image signal. The output terminal of the FM modulation circuit 16 is connected to the image signal input terminal of the recording amplifier 17, and the ID signal input terminal of the recording amplifier 17 is connected to the output terminal of the DPSK modulation circuit 15. ..

The recording amplifier 17 combines the recording image signal supplied from the FM modulation circuit 16 and the DPSK-modulated ID signal and outputs the combined signal to one switching terminal (R side in the figure) of the switch 18.

The input terminal of the DPSK modulation circuit 15 is connected to the output port of the system controller 11, and the system controller 11 forms an ID signal based on the data input from the keyboard 24 and inputs it to the DPSK modulation circuit 17. To do.

Next, the operation of this embodiment will be described. Here, among various editing operations, so-called forward-justified editing is performed in which unrecorded tracks and unnecessary tracks on the VF21 are sequentially packed with image signals recorded on other tracks from the first track on the VF21. The operation of this embodiment when the operation is selected and the operation is performed will be described.

The forward-justified editing operation of this embodiment is performed by the VF21.
This is performed for each image signal recorded on the upper one track, that is, for each image signal for one field.

First, the operator uses the keyboard 24 to specify the track number of a track on the VF 21 other than the cue track on which a recorded image signal is unnecessary. The track number designated by the operator using the keyboard 24 is input to the system controller 11 and stored in the system controller 11. Further, the operator may erase the image signal currently recorded on the track instead of inputting the track number of the track on which the unnecessary image signal is recorded. By doing this,
The track becomes an unrecorded track.

After the above-mentioned operation, when the operator gives an instruction to start the forward-justified editing operation by operating the keyboard 24, the system controller 11 causes the first controller on the VF 21 to operate according to a preset system program. All tracks on the VF 21 are sequentially reproduced from the track by the magnetic head 19, and the track is an image track in which an image signal is recorded, or a non-image track in which an audio signal or data other than the image signal is recorded. It is determined whether or not there is an unrecorded track in which no signal is recorded, and whether or not the cue signal is recorded for the cue track. Details of this discriminating operation will be described with reference to the flowchart of FIG.

First, the magnetic head 19 is moved to the outermost first track position on the VF 21, and the first track is reproduced by the magnetic head 19. The signal reproduced by the magnetic head 19 is input to the reproducing amplifier 1 via the switch 18 (at this time, the switch 18 is connected to the reproducing side (P side in the figure) by the control signal from the system controller 11). After being amplified by the reproduction amplifier 1, it is input to the DPSK demodulation circuit 2, the RF detection circuit 3, the FM demodulation circuit 4, the image signal discrimination circuit 5, the system controller 11 and an audio reproduction circuit (not shown).

The DPSK demodulation circuit 2 DPSK demodulates the ID signal recorded in the VF 21 and inputs it to the system controller 11. The system controller 11 determines the track number on the VF 21 currently being reproduced by the magnetic head 19 based on the input ID signal (step S1 in FIG. 2). As a result of this determination, at present, the magnetic head 19
The track being played by is the cue track
If it is not two tracks, it is judged whether or not the track is an unrecorded track (step S2 in FIG. 2).

The determination of the unrecorded track is made by the RF detection circuit 3. The RF detection circuit 3 includes a magnetic head 19
A signal in a predetermined frequency band is extracted from the signal reproduced by, detected, and compared with a reference value of a predetermined level to determine the presence or absence of the signal. Then, the determination result is input to the system controller 11.

As a result, if it is determined that any signal is recorded on the track, it is then determined whether the signal recorded on the track is an image signal (FIG. 2). Step S3).

The above-mentioned discrimination is performed by the image signal discrimination circuit 5
Made by.

The image signal discriminating circuit 5 counts the number of synchronizing signals of the image signal recorded on the track on the VF 21, and compares the counted value with a predetermined set value to thereby determine the VF.
It is determined whether the signal recorded on the track 21 is an image signal. That is, the synchronization signal separation circuit 6
3, the sync signal separated from the luminance signal Y is input to the input terminal 31 of FIG. 3, and the number of sync signals during one rotation of the VF 21 is counted by the counter 35 of FIG.
The count value of 5 is compared with a predetermined value by the comparator 36.
However, while the dropout is detected by the dropout detection circuit 33, the counter 35 is disabled and the sync signal is not counted. And V
If the count value of the counter 35 is "260" to "270" during one rotation of F21, the signal reproduced by the magnetic head 19 is regarded as an image signal, and the signal output from the image signal discrimination circuit 5 is output. A signal that is input from the terminal 37 to the system controller 11 and is regarded as a non-image signal other than the image signal regardless of whether the count value of the counter 35 is larger or smaller than the above value is input from the output terminal 37 to the system controller 11. System controller 11
Represents the signal of the discrimination result input from the image signal discrimination circuit 5 for at least 10 vertical synchronization periods (that is, VF
21 for 10 rotations) to determine whether the signal recorded on the track is an image signal.

When the system controller 11 determines that the signal recorded on the track of the VF 21 is an image signal, the system controller 11 moves the magnetic head 19 to the next track position on the VF 21 (see FIG. 2). Step S4), and the above-described operation is repeated.

When it is determined that the signal recorded on the track of the VF 21 is not the image signal, the system controller 11 sets a flag indicating that the editing operation of moving the image track is prohibited, and the image signal is moved to the forward editing operation. Is prohibited, and at the same time, a warning display indicating that a non-image track on which a signal other than the image signal is recorded is present in the VF 21 is displayed on the display unit 22 (step S7 in FIG. 2).

When the RF detection circuit 3 determines that the track currently being reproduced by the magnetic head 19 is an unrecorded track, the system controller 11 stores the track number of the track in the unrecorded track storage register. After writing (step S5 in FIG. 2), the magnetic head 19 is moved to the next track (step S4 in FIG. 2).

In this way, the magnetic head 19 has the VF 21.
When the 52nd track, which is the last track of the above, is reached, the 52nd track is a cue track, and therefore it is determined whether or not a cue signal is recorded on the track (step S6 in FIG. 2).

This determination is made by the RF detection circuit 3. That is, as in the above-described unrecorded track determination operation in step S2, the RF detection circuit 3 causes the magnetic head 19 to operate.
A signal in a predetermined frequency band is extracted from the signal reproduced by, detected, and compared with a reference value of a predetermined level to determine the presence or absence of the signal. Then, the determination result is input to the system controller 11.

As a result, when it is determined that the cue signal is not recorded on the cue track, the VF described above is used.
The reproduction operation of all tracks on 21 is completed.

When it is determined that the cue signal is recorded in the cue track as a result of this determination, the system controller 11 edits the image track movement as in the case where the above-mentioned non-image track exists in the VF21. A flag indicating that the operation is prohibited is set to prohibit the forward-justified editing operation of the image signal, and at the same time, a warning display indicating that the cue signal is recorded on the cue track is displayed on the display unit 22 (step S7 in FIG. 2).

Thus, the reproduction operation of all the tracks on the VF21 is completed, and whether or not there is a non-image track in the VF21, and if there is an unrecorded track, what number track is the unrecorded track, and the cute track? The system controller 11 stores the information as to whether or not the cue signal is recorded in the rack.

For convenience of explanation, it is assumed that, of the tracks on the VF 21, the first track is an image track, the second track is an unrecorded track, the third track is an unnecessary track, and the fourth track is an image track.

When the operator operates the keyboard 24 to instruct the start of the front-justified editing, the system controller 11 rotates the motor 20 to cause the magnetic head 19 to rotate.
Is moved to the first track of the VF21, and at the same time, the switch 18 is connected to the reproducing side (P side in the figure).

However, since the first track of the VF21 is used as an image track, the image signal is not read or moved, and the system controller 11 stores the track number of the moving destination track to which the image signal is moved. The counter (movement destination counter) and the counter that stores the movement source track number (movement source counter) are each incremented to "2", and the magnetic head 19
To the second track.

Since the second track of the VF21 is determined to be an unrecorded track by the above-mentioned reproducing operation, the system controller 11 does not increment the destination counter but increments the source counter to "3". , And the magnetic head 19 is moved to the third track.

Since the third track of the VF21 is designated as an unnecessary track by the operator, the system controller 11 does not increment the destination counter but increments the source counter to "4", and the magnetic head 19 is turned on. Move to the 4th track.

Since the fourth track of the VF 21 is determined to be an image track by the above-mentioned reproduction operation, the system controller 11 reproduces the image signal recorded on the track.

Therefore, the system controller 11 causes the magnetic head 19 to trace the fourth track on the VF21, reproduces the signal recorded on the fourth track of the VF21, and inputs it to the reproduction amplifier 1.

Of the signals output from the reproduction amplifier 1, the ID signal is demodulated by the DPSK demodulation circuit 2 and input to the system controller 11.

The image signal is also input to the FM demodulation circuit 4. The FM demodulation circuit 4 extracts an image signal from the signals reproduced by the magnetic head 19 and outputs the image signal as an FM signal.
By demodulating, the luminance signal Y and the line-sequential color difference signal C are respectively demodulated, and the luminance signal Y is synchronized with the sync separation circuit 6 and A / D
The line-sequential color difference signal C is input to the converter 7, and the line-sequential color difference signal C is input to the A / D converter
To enter.

The image signal demodulated by the FM demodulation circuit 4 is converted into digital data by the A / D converters 7 and 8 according to the control signal from the system controller 11.
It is written in the memory 9. The memory 9 for the image data
During the write operation to, the DSP 10 performs noise reduction processing on the image data written in the memory 9.

Further, the DSP 10 reads out the image data written in the memory 10, synchronizes the line-sequential color difference signals, performs the quadrature two-phase modulation of the color difference signals by the color subcarriers, and adds the composite synchronizing signal and the burst signal. The above process is performed and once written in the memory 9.

Then, the image data written in the memory 9 as described above is read out, converted into analog signals by the D / A converters 12 and 13, and input to the amplifier 14 as the luminance signal Y and the color difference signal C, respectively. To be done. The amplifier 14 synthesizes the input luminance signal Y and color difference signal C and outputs it as a composite image signal from the output terminal 23. The composite image signal output from the output terminal 23 is supplied to an external device such as a monitor device and displayed.

Further, when the image signal recorded on the fourth track of the VF21 is moved to the second track, the system controller 11 controls the DSP 10 to write the fourth track of the VF21 on the memory 9. Of the image data corresponding to the image signal of No. 1, a synchronization signal is added to the luminance signal, and the color difference signals are supplied to the D / A converters 12 and 13 as line-sequential color difference signals without performing quadrature two-phase modulation, It is input to the FM modulation circuit 16 as an analog signal. At the same time, the system controller 11 switches the switch 18
Is connected to the recording side (R side in the figure), the magnetic head 19 is moved to the second track, and the second track on the VF 21 is traced.

Further, the system controller 11 uses the VF
The ID signal of the fourth track, which is the source track on 21, is DPSK demodulated by the DPSK demodulation circuit 2, and the contents are stored in the system controller 11. The system controller 11 rewrites the track number in the stored contents of the ID signal to “4” which is the value of the destination counter,
The other contents are output to the DPSK modulation circuit 15 without being changed.
In this work, information regarding the date is not changed in the ID signal, but the date when the editing operation is performed may be set in the user area of the ID signal. Further, it may be set how many times the editing operation is performed in the user area. By thus setting the information regarding the number of editing operations in the user area of the ID signal and displaying the information during the editing operation, it is possible to prevent the deterioration of the image quality due to the editing operation.

Then, the image signal recorded on the fourth track which is the source track is F
M is modulated, and DP is modulated by the DPSK modulation circuit 15 as described above.
The SK-modulated ID signal is combined with the recording amplifier 17 and recorded on the second track on the VF 21 via the switch 18.

Thus, when the forward-justified editing of the image signal recorded on the fourth track to the second track is completed,
The system controller 11 increments the transfer destination counter, also increments the transfer source counter, and moves the magnetic head 19 to the track indicated by the incremented transfer source counter, that is, the fifth track.

Thereafter, similarly, the forward-justified editing operation is performed for all the tracks on the VF 21.

If there is a non-image track such as a track on which an audio signal is recorded or a track on which data is recorded on the VF 21 or a cue signal is recorded on the cue track, As described above, a warning is given on the display unit 22 and, at the same time, the editing operation is prohibited. At this time, the audio signal recorded in the VF 21 can be reproduced by the audio reproducing circuit, and the data can be decoded by the system controller 11.

In the present embodiment, when the non-image track exists and the cue signal is recorded on the cue track, the editing operation is prohibited, but the editing operation is executed only by displaying a warning. Whether or not to allow may be left to the operator's judgment.

Alternatively, the front-justified editing operation may be automatically performed when the power of the still image recording / reproducing apparatus is turned on or when the VF 21 is replaced without depending on the operator's instruction operation by the keyboard 24. In this case, the front-justified editing operation is automatically performed because there is no non-image track in the VF21.
Needless to say, this is limited to the case where the cue signal is not recorded on the cue track.

In the present embodiment, the case where the image signal recorded on any track in the same VF is moved to another track has been described. However, by using two still image recording / reproducing devices, When dubbing and editing an image signal recorded in a VF attached to one still image recording / reproducing apparatus to a VF attached to the other still image recording / reproducing apparatus, it is attached to the still image recording / reproducing apparatus on the reproducing side. VF
If there is a non-image track on the track or a cue signal is recorded on the cue track, the dubbing edit is prohibited or a warning is displayed to restrict the editing operation in the still image recording / playback device on the recording side. May be.

Further, a frame memory composed of two field memories is used as the memory 9, and the image signal recorded in the source track during the editing operation is written in one field memory and is currently recorded in the destination track. The image data of the moving source track stored in one of the field memories of the memory 9 may be recorded in the VF 21 after the recorded image signal is written in the other field memory. By doing this, VF21
It is possible to randomly move the image signal recorded in the above, and the editing operation is not limited to the forward-justified editing operation, and the editing operation such as arbitrarily moving or dubbing the image signal within the same VF can be performed. It will be possible.

[0077]

According to the image signal processing apparatus of the present invention,
When an information signal other than an image signal is recorded in an arbitrary recording area on a recording medium, a warning for performing an editing operation is issued to the recording medium, and an editing operation is directly performed on the recording medium. By prohibiting, it is possible to prevent the correspondence between the information signal recorded in the recording area other than the recording area where the image signal is recorded and the image signal from being broken.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a still image recording / reproducing apparatus as an embodiment of the present invention.

FIG. 2 is a flowchart showing a procedure of a discriminating operation for each track of VF in the embodiment of FIG.

FIG. 3 is a circuit diagram showing a configuration example of an image signal discrimination circuit according to the embodiment of FIG.

FIG. 4 is a block diagram of a configuration example of a conventional still image recording / reproducing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 reproduction amplifier 2 DPSK demodulation circuit 3 RF detection circuit 4 FM demodulation circuit 5 image signal discrimination circuit 6 sync separation circuit 9 memory 10 DSP 11 system controller 15 DPSK modulation circuit 16 FM modulation circuit 17 recording amplifier 19 magnetic head 20 motor 21 VF

Claims (3)

[Claims] 1. An apparatus for processing an image signal in which an image signal and another information signal corresponding to the image signal are recorded on recording media which can be recorded in different recording areas, respectively. An image signal processing apparatus, comprising: a determining unit that determines whether or not another information signal corresponding to an image signal is recorded in an area. 2. A warning signal generating means for generating a warning signal when the judging means judges that another information signal corresponding to an image signal is recorded in an arbitrary recording area on the recording medium. The image signal processing device according to claim 1. 3. When the discriminating unit discriminates that another information signal corresponding to an image signal is recorded in an arbitrary recording area on the recording medium, it is recorded in the arbitrary recording area on the recording medium. The image signal processing apparatus according to claim 1, further comprising a prohibition unit that prohibits recording of the image signal being recorded in another recording area on the same recording medium.