JPH03225671A - Information recording system and information reproducing system - Google Patents

Abstract

PURPOSE:To easily carry out an information recording system without fail by forming a sub information signal so as to be easily identified at the time of reproducing when reproduced information is recorded to another area again. CONSTITUTION:On a floppy disk 10, circular recording tracks are formed with the first and second recording areas. When the information recorded to the first recording area is reproduced and recorded to the other second recording area again, the sub information signal is formed in the prescribed shape. While maintaining source picture information, rerecording is executed and for a data signal to a dubbing picture, a date as the date of the sub information signal is written in the prescribed form so as to distinguish the data signal from the source picture. When the dubbing picture is reproduced by a monitor 48, display corresponding to the above mentioned date is eliminated by a system controller 42. Only in the case of reproducing the second recording area, a reproduced picture without the date is displayed and can be easily identified. Thus, even when picture quality is degraded, the rerecorded picture information and the source picture information can be easily identified without fail.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a system in which each corresponding data signal is multiplexed with respect to a predetermined image signal for each image, such as an image signal for each field. Each composite signal is recorded in one predetermined section (on the upper side) of a recording area that has a plurality of sections set according to a predetermined sequence on the information recording medium, such as sequential recording tracks on a floppy disk. This relates to a system in which a single track (one track) is allocated and recorded, and, for example, an image signal reproducing/recording device using an electronic still camera, etc. also belong to the system concept herein. Furthermore, it also includes a system that performs copying and recording from one recording medium to another.

[Prior Art] A predetermined group of recorded information, such as a video signal for each field, is recorded on an information recording medium such as a floppy disk in sequential recording sections in the information recording area, that is, on recording tracks. Regarding an information recording system such as an electronic still camera that records in correspondence, the system disclosed in Japanese Patent Application Laid-Open No. 1-237901 transfers low-recorded image data on a certain recording track of a medium between other unrecorded sections. So, the so-called
The present invention relates to a system that can record information with little deterioration in recording quality when a dubbing operation is performed.

In addition, the system disclosed in Japanese Patent Application Laid-open No. 1-237902 is similar to the above-mentioned system. The present invention relates to an information recording system that can perform reconstruction processing, so-called frame packing processing, so that unrecorded sections are not included in the middle while maintaining the original sequence.

Furthermore, the one disclosed in Japanese Patent Application Laid-Open No. 1-237903,
When an information recording medium recorded in the form of a composite signal obtained by multiplexing each corresponding pig signal to the image signal of each image is loaded, the information recorded on this information recording medium The present invention relates to a multiplex signal reconstruction device that can change data (for example, date and other data) corresponding to an image when edge sections are packed in order or their order is changed.

Incidentally, FIG. 10 shows the standard format for recording information on the floppy disk, which is the information recording medium. Here, it is assumed that the data signal represents a field/frame code, track address (number), year, month, and day. 1st
Figure 1 shows the frequency bands of each information recording signal. The data signal is a DPSK signal shown in this figure.

[Problems to be Solved by the Invention] The conventionally proposed systems described above are limited to processing such as frame packing or dubbing. In addition, in the process of dubbing, etc., the analog recorded image signal on the floppy disk is first A/D converted and stored in the field memory, and then D/A converted and recorded on the desired track. Since the dubbing image is re-recorded, the quality of the dubbed image is slightly lower than that of the original image data.

However, by performing the dubbing process, two or more tracks containing the same image are created on a single floppy disk, and according to the conventional system described above, normal visual observation is difficult. Since it is difficult to distinguish between the original image and the dubbed re-recorded image, the original image that needs to be saved is erased.
There was a high risk that problems such as dubbing images remaining would occur, especially when the date and time have passed.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to provide sub-information signals that are superimposed and recorded when information recorded in a predetermined first recording area is reproduced and re-recorded in a second recording area. An object of the present invention is to provide an information recording system or an information reproducing system in which images are recorded in a form that can be easily identified when the images are reproduced.

[Means and effects for solving the problem] The information recording system of the present invention is an information recording system that records information in a manner in which a sub information signal is superimposed on a main information signal, and the information recording system records information in a manner in which a sub information signal is superimposed on a main information signal. When reproducing information recorded in the area and re-recording it in a second recording area different from the first recording area, when performing the re-recording while maintaining the recorded information in the first recording area, , characterized by comprising a means for setting the form of the sub-information signal among the information signals related to this re-recording into a predetermined format, and further capable of reproducing the above-mentioned upper and sub-information so as to be reproduced simultaneously. When the information reproduction system is such that the sub information signal related to the recorded information to be reproduced is in a predetermined format,
The present invention is characterized in that it includes means for preventing the information related to the sub-information signal etc. from being reproduced at the same time as the information related to the corresponding main information signal.

When the information recording system reproduces the information recorded in the first recording area and re-records it in the second recording area, the information recording system performs the sub-information signal in a predetermined format, and furthermore, the information recording system In the reproduction system, when the aspect of the sub information signal related to the recorded information to be reproduced is as specified above, the information related to the sub information signal is not reproduced at the same time as the information related to the corresponding main information signal. Make it.

[Example] The present invention will be explained below with reference to illustrated embodiments.

FIG. 1 is a block diagram of an information recording and reproducing system showing an embodiment of the present invention. In the figure, a floppy disk 10 is loaded as an information recording medium into this system.
A magnetic head 12 is provided for sending and receiving information. Concentric annular recording tracks are formed on the recording surface of the floppy disk 10, which is the recording area. Note that this recording track has a first recording area or a second recording area.

The magnetic head 12 moves in the radial direction of the floppy disk 10 by a head access mechanism (not shown), and sends and receives information to and from a target track.

A preamplifier 14 for amplifying a reproduction signal from this magnetic head 12 and a preamplifier 16 for amplifying a recording signal to this magnetic head 12 are provided, and these preamplifiers 14 and 16 are selected by a changeover switch 18. The magnetic head 12 is connected to the magnetic head 12. The output line of the preamplifier 14 has an FM
A demodulation/signal separation circuit 20 is connected. This FM demodulation/signal separation circuit 20 demodulates the reproduced FM signal to generate a main information signal Y signal (luminance signal and synchronization signal in this example) and a C signal (in this example R, -Y/BY). color difference line sequential signal), and a sub information signal, which is a field/color difference line sequential signal).
It is separated into a data signal including a frame ID code and track number/date data. An A/D conversion circuit 22 for converting the Y and C signals into digital signals is connected to the Y and C signal output sides of the FM demodulation/signal separation circuit 20.

The Y signal and C signal converted into digital signals by this circuit 22 are applied to a field memory 26 via a switch circuit 24. The field memory 26 is capable of recording field image information for one disk recorded on one recording track of the floppy disk 10 described above. Further, the data signal separated by the FM demodulation/signal separation circuit 20 is input to the system controller 42. Among the data signals, the field/frame code signal is used for field/frame playback control, and the display contents of the track number and date data are combined with the output of the field memory 26 as necessary.

The digital Y and C signals read from the field memory 26 are input to the corresponding D/A conversion circuits 28 and 30 in the order described above. That D/
The Y and C signals output from the A conversion circuits 28 and 30 are output to the television monitor 48, and are output to the field memory 2.
The image recorded in 6 is displayed.

Further, the output lines of the D/A conversion circuits 28 and 30 are connected to a signal synthesis/FM modulation circuit 34 via a switch circuit 32.
It is also connected to the input side of. The signal synthesis/FM modulation circuit 34 synthesizes the analog Y and C signals output from the D/A conversion circuits 28 and 30 to form a composite video signal, which is FM-modulated and output. This F
The M modulated output is supplied to mixer 35. Data signals are also input to the mixer 35 based on instructions from the system controller 42 . The erase signal, which is the output of the mixer 35 or the output of a separately provided erase signal generation circuit 36, is connected to be selectively input to the preamplifier 16 by a changeover switch 38.

On the other hand, the reproduced signal output from the preamplifier 14 is also applied to an empty track detection circuit 40. The empty track detection circuit 40 sends a discrimination signal to the system controller 42 to determine whether the track being accessed by the magnetic head 12 has an unrecorded edge or a recorded edge, based on the envelope level of the reproduced signal output from the preamplifier 14. give as.

The system controller 42 includes a microprocessor, and provides control signals to each of the above-mentioned switch circuits and signal processing circuits to collectively control the system. Note that, in FIG. 1, signal lines for this purpose are omitted.

Further, the system controller 42 is configured to receive operation signals from a keyboard 44 for the user to operate the system, and also to issue an address signal to the field memory 26 for memory access. The address generator 46 is configured to provide a control signal to the address generator 46 .

The data signal temporarily stored in the system controller 42 and subjected to necessary corrections or changes through operations from the keyboard 44 is supplied to the mixer 35.

In frame packing or dubbing processing in this system, image signals on designated tracks are transferred to the magnetic head.
2, the image signal is read out, subjected to processing such as A/D conversion, and recorded in the field memory 26, and the image signal is again subjected to D/A conversion etc. and recorded on a designated track. At the same time, the data signal is also rewritten as necessary, or in that case, the data content is temporarily stored in the RAM in the system controller 42, and the data signal is rewritten in the mixer 35 at the time of recording.
is output to.

Changes in images and data signals manipulated in the frame filling process and dubbing process of the system of this embodiment configured as described above are shown in FIGS. 2-3 showing images corresponding to tracks, and FIG. This will be explained with reference to the diagram shown in Figure 5.6, which shows bit data. Note that the recorded images y, [D, ...... in Figures 2 and 3 indicate recorded images of the corresponding track on the floppy disk, and the opening indicates that the corresponding track is in an unrecorded state. ing. Further, FIG. 4 shows the format of the data signal, and each data of the field/frame code and track number 1 corresponds to each bit data of Dl "" 28 as shown in the figure.

First, frame packing processing means that before frame packing as shown in Fig. 2, for example, images that were recorded in a discontinuous manner on track numbers 5 and 8 are changed to sections of track numbers 3 and 4 by frame packing processing. and recorded/recorded on the track.
Processing is performed so that unrecorded partitions are not mixed together. Through this frame filling process, the transferred track number and the date on the original image are written in the data section, as shown in FIG.

Further, as shown in FIG. 3, in the dubbing process, for example, the track of the first recording area before the dubbing process, for example, the recorded image captured by track number 1, is transferred to the track of the second recording area, for example, This is a process of copying to the section of track number 5 and recording the image opening. In the dubbing process, re-recording is performed while maintaining the original image information of track number 1. As shown in FIG. 6, the data signal for the dubbed image of track number 5 is written with a corresponding number in the track number, but is data of a sub information signal to distinguish it from that of the original image. Assume that the date is written in a predetermined manner, for example, all "0"s. Further, when the dubbed image is reproduced on the monitor 48, the system controller 42 controls so that the display corresponding to the "1-attached data "0" is not displayed.

The frame packing, dubbing processing, etc. performed by the above system will be explained with reference to the flowcharts shown in FIGS. 7 and 8. In addition,
When instructing the normal mode in which frame packing processing or normal recording processing is performed, the recording mode flag F shall be set to the value 1, and for the dubbing mode in which dubbing processing is performed, the flag F shall be reset to the value 0. .

FIG. 7 shows a subroutine for the recording mode flag setting process for setting the above-mentioned flag F. In executing the recording process, this subroutine is first called by the main routine (not shown).

Then, in step Sll, flag F is set to 1. Subsequently, in step S12, the keyboard 44
Only when the input instruction from 1 is for dubbing mode, the process jumps to step 81B, resets the flag F to 0, and returns from this routine.

Next, the subroutine shown in FIG. 8 executes data multiplex recording processing, that is, processing in which data signals such as track numbers and dates, which are sub information signals, are multiplexed and recorded on image information signals, which are main information. is called. First, in step S21, the track number Tr at the current position of the magnetic head 12 is registered, and in step S22, the value of the track number Tr is made to correspond to the bit data D3 to D9 of the track number in the data section, and the system controller 42 Register in RAM.

Next, in step S23, with reference to flag F,
If the value is O, that is, in dubbing mode, the process jumps to step S25, and the date bit data D1 of the data section is
0"" D2g is set to the value 0 by the system controller 42.
(See FIG. 6). In addition, flag F
When is 1, that is, in the case of frame filling or normal mode, the date data D10-D28 corresponding to the original image stored in the field memory 26 is used as is (see FIG. 5). Subsequently, step S24
In this case, the Y and C signals in the field memory 26 are D/A converted, further signal synthesized and modulated, and then the R signals in the system controller 42 are processed.
The mixed signal is mixed with the data signal stored in the AM in the mixer 35 and re-recorded on the corresponding track of the floppy disk 10 via the magnetic head 12.

Next, when performing reproduction processing of the image information recorded as described above, the subroutine shown in FIG. 9 is called by the main routine. First, in step S31, the process proceeds from a standby state for track movement to step S32 in response to input of a command key, and a process for moving the head 12 is executed. Then, step 833. In S34, reproduction of the data signal and image signal is executed. Next, the date data D1o-D28 of the data signals are referenced and all values are 0.
In other words, if what was recorded on the relevant playback track was the dubbing processed image data (see track number 5-1 in FIG. 3), the system controller 4
A value instructing no display is stored in the date field of the display RAM No. 2. Note that the track number display section displays data D3 to D9.
On the other hand, if all of the data Dlo to D28 are not 0 in step S35, that is, if the data recorded on the corresponding playback track is normal recording or frame-packed recording, playback is performed. Display the data D3 to D28
Store in AM. In step S37, the image is reproduced on the monitor 48, and at the same time, the contents of the display RAM track number and date are displayed. In this case, if the reproduced image is the above-mentioned dubbed image, the date is not displayed.

Subsequently, in step S39, a check is made to see if the playback stop instruction key is pressed, and unless there is a stop instruction, step S39 is performed.
The process returns to step 31.

As described above, according to the reproduction operation of this embodiment, only when an image is reproduced by dubbing in the second recording area, a reproduced image without a date is displayed, making it possible to easily identify the reproduced image. Although this system is intended for dubbing processing on a single floppy disk, it is also applicable to dubbing processing between different magnetic recording media.

[Effects of the Invention] As described above, the information recording system of the present invention provides a sub-information signal when reproducing information recorded in a predetermined first recording area and re-recording it in a second recording area. According to the present invention, the original image information of the first recording area and the reproduction of the second recording area whose image quality is worse than that of the original image information are reproduced and displayed in a form that can be easily identified when the images are reproduced. It is possible to provide an information recording system having a remarkable effect such that identification with recorded image information can be easily and accurately performed even when the date has passed or when there are many similar images and it is complicated.

[Brief explanation of drawings]

FIG. 1 is a block configuration diagram of an information recording system showing an embodiment of the present invention; FIG. 2 is a diagram showing the image recording state of each track before and after the frame packing process of the information recording system shown in FIG. 1; 3 is a diagram showing the image recording state of each track before and after dubbing processing in the information recording system shown in FIG. 1, FIG. 4 is a diagram showing the format of a data signal in the information recording system shown in FIG. 1, FIG. 5 is a diagram showing each bit data of the data signal before and after the frame filling process of the information recording system shown in FIG. 1 above, and FIG. 7 is a flowchart of the subroutine of the recording mode flag setting process of the information recording system shown in FIG. 1 above. FIG. 8 is a diagram showing the data multiplex recording process of the information recording system shown in FIG. 1 above. FIG. 9 is a flowchart of the subroutine of the reproduction process of the information recording system shown in FIG. FIG. 2 is a spectrum diagram showing frequency bands of recording signals of a video floppy disk system. 10...Floppy disk (recording medium having a first recording area and a second recording area) Y. C signal...Main information signal Data signal...Sub information signal

Claims (2)

[Claims] (1) An information recording system that records information in a manner in which a sub information signal is superimposed on a main information signal, the information recording system reproducing information recorded in a predetermined first recording area and reproducing the information recorded in a predetermined first recording area. When re-recording is performed in a second recording area different from the first recording area, when re-recording is performed while maintaining the recorded information in the first recording area, the form of the sub-information signal among the information signals related to this re-recording. 1. An information recording system characterized by comprising a means for performing a predetermined method. (2) An information reproducing system capable of reproducing recorded information in which a sub information signal is superimposed on a main information signal so that the main and sub information are simultaneously reproduced, the recorded information to be reproduced. Information reproduction characterized by comprising means for preventing the information related to the sub information signal from being reproduced at the same time as the information related to the corresponding main information signal when the sub information signal related to the sub information signal is of a predetermined format. system.