JP2830208B2 - Recording and playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention records an image or audio information on a recording medium together with attribute information including information on the recording date and time and the number of edits of the image or audio information. The present invention relates to a recording / reproducing apparatus for reproducing an image or audio information recorded on a recording medium.

2. Description of the Related Art In a recording medium such as a still video floppy which can individually store information in a plurality of sections (for example, tracks), when information of a certain recorded track is unnecessary,
It can be erased and another information recorded.

[Problems to be Solved by the Invention] As described above, when recording, erasing, and recording are repeated, recorded information is not arranged in chronological order in the recording medium. Therefore, if the data is simply reproduced in the track order, there is a disadvantage that the time interval of the recording time becomes jumbled and confused.

Therefore, an object of the present invention is to provide a recording / reproducing apparatus which has solved such a drawback.

[Means for Solving the Problems] A recording / reproducing apparatus according to the present invention records an image or audio information on a recording medium together with attribute information including information on the recording date and time and the number of edits of the image or audio information. A recording / reproducing apparatus for reproducing an image or audio information recorded on a recording medium, wherein the image or the audio information is recorded on the recording medium together with the attribute information, and the image or the audio information is recorded from the recording medium. Recording / reproducing means for reproducing the attribute information, storage means for temporarily storing the image or audio information reproduced by the recording / reproducing means, and recording at the time of recording the image or audio information recorded on the recording medium When rearranging in order, image or audio information is reproduced from the recording medium,
A rearrangement control unit that temporarily stores the data in the storage medium and re-records the image or audio information on the recording medium in accordance with the recording date and time and the number of edits indicated by the attribute information recorded on the recording medium. It is characterized by.

[Operation] With the configuration described above, it is possible to easily rearrange the order of recording at the time of recording without deteriorating the image or audio information randomly recorded on the recording medium and without requiring any special operation. Become.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
10 is a magnetic disk as a recording medium, 12 is a magnetic disk 10
A spindle motor for rotating the magnetic disk at a predetermined number of revolutions, a magnetic head for recording a signal on the magnetic disk and reproducing a recorded signal on the magnetic disk, and a head drive for moving the magnetic head in a radial direction of the magnetic disk A circuit, 18 is a photographic lens, 20 is an image sensor that converts a subject image by the photographic lens 18 into an electric signal, and 22 is an image signal (for example, an RGB signal) output from the image sensor 20 into a luminance (Y) signal and a color difference signal. This is an imaging circuit for conversion.

A modulation circuit 24 modulates a video signal composed of a luminance signal and a color difference signal for recording on the recording medium 10, and 26 modulates information (ID) such as the date and time of shooting, the state at the time of shooting, and the number of times of re-editing. The ID modulation circuit 28 includes a modulation circuit 24 and an ID modulation circuit 26.
This is a recording amplifier that amplifies the composite signal of the output of the recording amplifier.

30 is a reproduction amplifier for amplifying the reproduction output of the magnetic head 14,
32 is an ID demodulation circuit for demodulating ID information from the RF output of the reproduction amplifier 30, 34 is a demodulation circuit for demodulating a luminance signal and a color difference signal of a recorded image from the output of the reproduction amplifier 30, and 36 is an output from the demodulation circuit 34. A reproduction signal processing circuit for converting the luminance signal and the color difference signal into video signals. However, demodulation circuit 34
May be output as it is, or may be converted to an RGB signal and output. 38 is a video monitor device.

An A / D converter 40 digitizes the output of the demodulation circuit 34, a frame memory 42 stores the output data of the A / D converter 40, and a D 44 converts the output of the frame memory 42 into an analog signal. / A converter.

46 is an erasing circuit for generating an erasing signal for erasing unnecessary recording, 48 is an RF detecting circuit for detecting the output of the reproducing amplifier 30, and 50 is
Is a system control circuit for controlling the whole, 52 is a display device for performing various displays, 54 is a switch for selecting an image captured by the image sensor 20 or an image stored in the frame memory 42, and 56 is for erasing or recording. A switch 58 for selecting is a switch for selecting whether to record the image captured by the image sensor 22 on the recording medium 10 or to display the image on the video monitor device 38.

Next, referring to FIG. 1, an operation for recording a captured image on a recording medium will be described. First, field recording will be described. At this time, the switches 54, 56, 58 are connected to the contact a. When the user directs the taking lens 18 toward the subject and presses a release button (not shown), the system control circuit 50 drives the spindle motor 12 at the first stage to rotate the magnetic disk 10 at a predetermined speed, and the rotation is set to a predetermined value. After the stabilization, the shutter (not shown) operates according to the next stroke, and the image sensor 22 converts the subject image into an electric signal. The output of the imaging element 22 is applied to the modulation circuit 24 via the imaging circuit 22 and the switches 58 and 54, and is modulated. At the same time, identification information such as a shooting date and time, a shooting state, and the number of edits (0 in the case of recording a shot image) is applied from the system control circuit 50 to the ID modulation circuit 26 and modulated. The output of the modulation circuit 24 and the output of the ID modulation circuit 26 are combined, amplified by the recording amplifier 28, and applied to the magnetic head 14 via the switch 56.
Recorded on the magnetic disk 10.

In the case of frame recording, it operates as follows. An image sensor, an image signal of a first field of the frame image signal,
After that, the image signal of the second field is output.
Numerals 54, 56 and 58 are connected to the contacts a and recorded on the magnetic disk 10 in the same manner as in the case of the field recording. At the time of outputting the second field, the switch 58 is connected to the contact b, digitized by the A / D converter 40 and stored in the frame memory 42, and after the recording of the first field on the magnetic disk 10 is completed, the system control The circuit 50 moves the magnetic head to another track by the head drive circuit 16 and switches the switch 54.
To the contact b side. Thereafter, the information stored in the frame memory 42 is read out, returned to an analog signal by the D / A converter 44, and applied to the modulation circuit 24 via the switch 54. Thereafter, the data is recorded on the magnetic disk 10 as in the case of the first field.

Next, the operation at the time of reproduction will be described. The output of the magnetic head 14 is amplified by the reproduction amplifier 30, the output of the reproduction amplifier 30 is detected by the RF detection circuit 48, and the position of the magnetic head 14 in the radial direction is controlled so that the detection output becomes maximum. On the other hand, ID demodulation circuit
34 demodulates the superimposed-recorded ID signal and determines whether it is field recording or frame recording. For field records,
The demodulated output of the demodulation circuit 34 is applied to the video monitor 38 via the reproduced signal processing circuit 36, and the reproduced image is displayed. Of course, the output of the demodulation circuit 34 may be digitized and temporarily stored in the frame memory 42, and the stored data may be read out, returned to an analog signal, and processed by the reproduction signal processing circuit 52 for reproduction signal processing. When the data is stored in the frame memory 42 in this manner, it is not necessary to constantly rotate the magnetic disk 10 during reproduction, power can be saved, and wear of the magnetic head 14 and the magnetic disk 10 can be prevented.

In the case of frame recording, the RF reproduction output of the first field output from the magnetic head 14 is reproduced by the reproduction amplifier 30 and the demodulation circuit 34.
And stored in the frame memory 42 via the A / D converter 40. Next, the system control circuit 50 moves the magnetic head 14 to the track where the second field is recorded, and reproduces the recorded information of that track. The output of the magnetic head is stored in the second field storage area of the frame memory 42 via the reproduction amplifier 30, the modulation circuit 34, and the A / D converter 40.
Note that a blanking signal is also stored in the frame memory 42.

Thus, the first and second frames are stored in the frame memory 42.
After the reproduction signal of the field is stored, the first field and the second field are read alternately or as a non-interlace signal, and applied to the reproduction signal processing circuit 36 via the D / A converter 44. Thereby, in the video monitor device 38,
A frame image is displayed. By storing the blanking signal in the frame memory 42, a reproduced image with less jitter can be obtained.

Next, an editing function for re-recording images recorded on the magnetic disk 10 in the order of recording (photographing) date and time will be described with reference to FIG. The ID signal of the recorded track of the magnetic disk 10 is read out, and each recorded image is assigned a time-series order (S1). In the case of the same ID, the younger track is given a lower number. Then, the number of edits CK of each recorded image is checked, and the
For a recorded image exceeding CK0, a prohibition is displayed on the display device 52 (S3), and when the number of times is equal to or less than a predetermined number of times CK0, the recorded image is sorted on the magnetic disk 10 using the frame memory 42, and The ID signal is rewritten (S4), and the process ends.

The specific operation in the edit mode will be described based on the specific example shown in FIG. For example, as shown in FIG. 3, it is assumed that the time series signals shown in FIG. 3 are added to the first to seventh tracks of the magnetic disk 10 by S1 in FIG. First, the magnetic head 14 is moved to the first track, and the time series number of the first track is compared with the track number. Since these are the same, editing is unnecessary, and the magnetic head 14 is moved to the second track. The time series number of the second track is 7
Therefore, it is necessary to edit (that is, re-record on another track), reproduce the recorded image on the second track, and perform frame reproduction via the reproduction amplifier 30, the modulation circuit 34, and the A / D converter 40.
It is stored in the first field storage area M1 of the memory 42. At this time, a blanking signal and a synchronization signal are stored at the same time.
Subsequently, an erase signal is generated from the erase circuit 46 to erase the signal on the second track.

Since the second track is vacant, the magnetic head 14 is moved to the track having the time series number of 2 (in this example, the third track), and the recorded image is reproduced to read the second image of the frame memory 42.
It is stored in the field storage area M2 together with the blanking signal and the synchronization signal. Then, the magnetic head 14 is moved to the second track, and the signal in the second field storage area M2 of the frame memory 42 is read and recorded on the second track. At this time, the shooting date and time and the shooting conditions recorded on the third track remain unchanged, the number of edits is increased by one, applied from the system control circuit 50 to the ID modulation circuit 26, and recorded on the second track together with the image information. You.

Since the recording information of the third track has been transferred to the second track, the magnetic head 14 is moved to the third track, and an erasing signal is generated from the erasing circuit 46 to erase the recording signal of the third track.

Since the third track is empty, the magnetic head is moved to the track with the time series number 3, in this example, the fourth track,
Similarly, the recorded contents of the fourth track are transferred to the third track, and the recorded signal of the fourth track is erased. Similarly,
The content of the sixth track having the time series number of 4 is re-recorded on the fourth track, and the recording signal of the sixth track is deleted.

Subsequently, when the seventh track having the time series number 5 is to be re-recorded on the fifth track, the image having the time series number 6 is still recorded on the fifth track. The information of the fifth track with time series number 6 is
After re-recording on the track, the seventh track with the time series number 5 is re-recorded on the fifth track, and finally the information on the time series number 7 stored in the first field storage area M1 is recorded on the seventh track. Re-record.

In the above embodiment, the blanking and the synchronization signal are stored in the frame memory 42 together with the image information for two fields to reduce the accumulation of jitter due to re-recording.
Of course, only two fields of image information may be stored.

Although the example in which the image information recorded in the field is re-recorded has been described, the same can be realized in the case of frame recording. In the above embodiment, the order of the shooting date and time in the ID signal is edited. However, the serial number of the image information may be written in the ID information, and the editing may be performed based on this. For example, when a new erased image is recorded, the next number after the largest number among all recorded tracks is given to that track, but after editing, the number is written as it is. Alternatively, the tracks may be re-ordered in chronological order from that number and written.

Although the case where a magnetic disk is used as a recording medium has been described as an example, the present invention can be applied to a recording / reproducing apparatus using another recording medium such as an optical disk, a magneto-optical disk, and a solid-state memory device. Further, the recording information is not limited to the image, but may be sound or other information.

[Effects of the Invention] As can be easily understood from the above description, according to the present invention, the image or audio information randomly recorded on the recording medium at the time of recording is not deteriorated, and no special operation is required. It is possible to provide a recording / reproducing apparatus that can easily rearrange the order of recording at the time of recording.

[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 flowchart of the editing mode in FIG. 1, and FIG. 3 is an explanatory example of the editing operation. 10: magnetic disk, 12: spindle motor, 14: magnetic head, 18: photographic lens, 20: imaging device, 22: imaging circuit, 24:
Modulation circuit, 26: ID modulation circuit, 32: ID demodulation circuit, 34: Demodulation circuit, 36: Playback signal processing circuit, 38: Video monitor device, 42: Frame memory, 46: Erasure circuit, 48: RF detection circuit, 50: System control circuit, 52: Display device

Claims (1)

(57) [Claims] An image or audio information is recorded on a recording medium together with attribute information including information on the recording date and time and the number of edits of the image or audio information, and the image or audio information recorded on the recording medium is recorded. A recording / reproducing apparatus for reproducing the image or audio information together with the attribute information on the recording medium, and reproducing the image or audio information and the attribute information from the recording medium; Storage means for temporarily storing the image or audio information reproduced by the recording / reproduction means; and when the images or audio information recorded on the recording medium are rearranged in the recording order at the time of recording, the image or audio information is stored from the recording medium. Reproduces the audio information, temporarily stores the audio information in the storage unit, and records the recorded information in accordance with the recording date and time and the number of edits indicated by the attribute information recorded on the recording medium together with the image or the audio information. Recording and reproducing apparatus is characterized in that a sort control means to re-record the body.