JPH01237901A - Information recording system - Google Patents

Abstract

PURPOSE:To reconstitute so that a non-recorded section cannot be included on the way in the sequence from a preceding section relatively during the sequence system of the section by operating repeatedly a recording information saving means, an erasing means and an information re-recording means in a prescribed sequence. CONSTITUTION:A magnetic head 12 reads the information of all tracks with a command from a keyboard 44, the information is given through a preamplifier 14 to an empty track detecting circuit 40, the circuit 40 distinguishes whether the track is not recorded or already recorded and inputs and stores it to a system controller 42. Next, the controller 42 identifies final information (8) of the already recorded section in the sequence from the recording track of the outermost circumferential side based on the stored empty track data and stores the signal of the digital mode into a field memory 26. The information (8) is read, said track is erased and the information (8) is stored the most preceding non-recorded section. Next, the controller 42 distinguishes whether or not the already recorded section is remained, and when it is judged that the section is remained, these actions are repeated and when the already recorded section is not remained, the actions are completed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is directed to the recording of sequential information on a floppy disk, for example, in response to a predetermined group of recorded information, such as a video signal for each field. An information recording system in which a predetermined section (one track on the upper side) in a recording area having a plurality of sections set according to a predetermined sequence on the information recording medium, such as a track, is allocated. The information recording system concept also includes devices for reproducing and recording image signals using electronic still cameras.

In particular, the present invention relates to a technique for performing operations such as organizing the recording state on the information recording medium in the information recording system as described above.

[Prior Art] For example, recording information for each predetermined group, such as a video signal for each field, is recorded on an information recording medium such as a floppy disk.
Various information recording systems have already been proposed, such as electronic still cameras, which record information in correspondence with sequential recording sections (recording tracks) in the information recording area. (For example, Special Publication No. Sho 63-1661 Publication N). Typically, in this type of system, successive recorded sections (each recorded track) on an information recording medium can be selectively erased as desired. Alternatively, when recording is performed intermittently in sequential recording sections without following the order (for example, from the outer track toward the inner track), leaving unrecorded sections in between. It is also possible.

[Problems to be Solved by the Invention] In this type of information recording system, when recording sections are selectively erased or recorded intermittently, in either case, the information recording medium has the following problems: A state in which recorded sections and unrecorded sections are mixed appears in the sequential recording sections (recording tracks) in the information recording area. If the recording on the information recording medium is in such a state, the means for detecting an unrecorded section (remaining capacity of the information recording medium) on the information recording medium becomes complicated.

In addition, in a system using an information recording medium such as a floppy disk, recording in sequential recording sections (recording tracks) formed concentrically in an annular manner is most effective in the outermost track where the relative speed with the head is greatest. The recording quality tends to be high, and the quality of the recording tends to decrease as the inner circumference approaches. If the recording quality differs depending on the order of the recording sections (positions on the recording medium), dubbing may be performed between relatively low-quality recording sections (between relatively inner recording tracks). When
Recording quality deteriorates significantly.

On the other hand, in a system that reproduces information using a pickup means, when reproducing recorded information sequentially, some of the sequential recording sections (recording tracks) to be reproduced are unrecorded, resulting in unnecessary signals. In order to prevent this from being outputted, the pickup means must be skip-fed, which complicates the system configuration.

The present invention has been made in view of the above-mentioned points, and an information recording medium is loaded in which recorded sections and unrecorded sections are mixed in sequential recording sections (recording tracks) in an information recording area. This type of information can automatically perform operations such as organizing the recording status when the data is recorded, and this operation causes relatively little deterioration in recording quality even when dubbing is performed between recording sections. It aims to provide a recording system.

[Means and effects for solving the problems] The information recording system of the present invention has been made in view of the above points, and it is possible to A predetermined one section in a recording area having a plurality of sections set according to a predetermined sequence is allocated, and the earlier the section is in the sequence, the higher the quality of recording is relatively. This is an information recording system capable of evacuating and retaining information stored in the last section among the recorded sections in the sequence of sections, in a predetermined evacuation area. and an erasing means that performs an operation of erasing the recorded information on the saved information storage section after the evacuation is completed; information re-recording means for storing the information in the section located at the earliest position; and by repeatedly operating the recorded information saving means, the erasing means, and the information re-recording means in a predetermined order if necessary, the recording is performed. The series of recorded edge sections in the recording area of the medium can be reconfigured in order from the relatively preceding section in the order series of the sections so that no unrecorded sections are included in the middle, and this reconstruction is possible. This is to prevent the recording quality from deteriorating due to dubbing between relatively low-quality recording sections (between relatively inner recording tracks) during the construction process.

[Embodiment] FIG. 1 is a block diagram showing an outline of a still video floppy disk system which is an information recording system as an embodiment of the present invention. In FIG. 1, a magnetic disk 12 is provided for sending and receiving HL information to and from a floppy disk 10, which serves as an information recording medium loaded in this system. Concentric annular recording tracks are formed on the recording surface of the floppy disk 10, which is the recording area. On the floppy disk loaded in this system, the first track,
Second track.

An order series is set for each track as a recording section, such as the third track, . . . , the innermost track, and so on. As mentioned above, this information recording system is a still video floppy disk system, and field image information as a group of information is recorded in FM on each track as the recording section. As in known systems of this type, the magnetic head 12 is moved in the radial direction of the floppy disk by a head access mechanism (not shown) to send and receive 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.

An FM demodulation/signal separation circuit 20 is connected to the output line of the preamplifier 14. This FM demodulation/signal separation circuit 20 demodulates the reproduced FM signal to produce a Y signal (in this example,
luminance signal and synchronization signal) and C signal (in this example, R-Y
/B-Y color difference line sequential signal). An A/D conversion circuit 22 that converts the Y signal and C signal into digital signals is connected to the output side 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 above-mentioned floppy disk. 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.

Each output line of the D/A conversion circuits 28 and 30 is connected to the input side of a signal synthesis/FM demodulation circuit 34 via a switch circuit 32. The signal synthesis/FM demodulation 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. The FM modulation output or the erase signal output from 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. This empty track detection circuit 40 includes the preamplifier 14
Based on the envelope level of the playback signal output of
It is given as an input signal for 2. 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. In FIG. 1, the signal line for this purpose is omitted.

The system controller 42 also receives operation signals from a keyboard 44 for operation by the user of the system, and also inputs operation signals from the field memory 2.
The address generator 46 is configured to issue a control signal to an address generator 46 for accessing the memory by issuing an address signal to the address generator 6.

In the above configuration, the recorded information saving means in the concept of the present invention is the field memory 26. The erasing means is configured by the address generator 46 and the necessary functional units of the system controller 42, and the erasing signal generating circuit 36. The preamplifier 16, the magnetic head 12, the necessary functional parts of the system controller 42, etc., and the information re-recording means include the signal synthesis/FM demodulation circuit 34° magnetic herad 1.
2 and the required functional units of the system controller 42.

As shown in the figure, if a television monitor 48 is connected to the output side of the D/A conversion circuit 28, it is possible to monitor the video read out from the field memory 26 at that point in time.

FIG. 2 shows how the system of the present invention sequentially records sections in the recording area of the information recording medium (in the example of FIG. 1,
Fill the annular recording track (formed sequentially from the outer circumference on the floppy disk) starting from the section located first in the sequence of recording sections (the outermost track on the floppy disk), and record unrecorded sections in the middle. FIG. 7 is a diagram conceptually illustrating a case where an operation is performed to form a series of recorded partitioned areas without entering any partitions. For convenience of explanation, it is assumed that the first to eighth recording tracks are set in order from the outer circumferential side, but it goes without saying that more tracks than this may be set in an actual system. In Figure 2, (1), (2
), ..., (7), (8) are the numbers of the annular recording tracks formed sequentially from the outer circumference on the floppy disk, and the numbers inside the rectangular frames are the numbers representing each image signal recorded on the track. be. In FIG. 2A, this number matches the recording track number. In the figure, X represents an unrecorded track. A block marked with "MEM" represents recorded information saved and held in the save area. That is, in FIG. 2A, the recorded information [3 pieces are
Record information [5] is recorded on the fifth track, record information [6] is recorded on the sixth track, record information [8] is recorded on the eighth track, and the record information [5] is recorded on the sixth track. Second. The fourth and seventh tracks are unrecorded tracks (empty tracks).

In the state of FIG. 2A, the recorded information [8
] is saved and held in the save area, and then the eighth track is erased, resulting in the state shown in FIG. 2B.

Next, the record information [8] of the evacuation area is transferred to the recorder IJ.
The data is stored in the first track of the innermost circumference, which is the unrecorded section (vacant track) located at the most preceding rank (outer circumference side) in the partition series of A. As a result, the state shown in FIG. 2C is obtained. In this state, the recorded information [6] of the sixth track is saved and held in the save area, and then the sixth track is erased, resulting in the state shown in the second figure. Furthermore, the recording information [6] of the evacuation area is stored in the second track, which is the empty track located at the most preceding rank (on the outer circumferential side) in the state shown in the second figure. As a result, the state shown in FIG. 2E is obtained. Below, regarding the recorded information [5] of the 5th track,
By performing the same operations as described above for recorded information [8] and [6], the state shown in FIG. 2 G is finally achieved through the state shown in FIG. 2 F.

Looking at FIG. 2G, the system of the present invention can be used to record data in sequential recording sections (circular recording tracks formed sequentially from the outer circumferential side on the floppy disk) in the recording area of the information recording medium in the order series of the recording sections. (the outermost track on the floppy disk)
Fill in the blocks in order from the side, making sure there are no unrecorded blocks or people in between, and place a series of recorded blocks (in this example, record information [8
1, 46], [3], [5].

1.2.3 recorded in this order. , l racks) are formed.

Furthermore, according to the system of the present invention, since dubbing is not performed between relatively low-quality recording sections (between relatively inner recording tracks), the recording quality is improved in the process of reconfiguring the recording order. decrease is less likely to occur.

Next, with reference to the flowchart of FIG. 3, the operation of the system of the present invention of FIG. 1 will be described when it functions as described with respect to FIG.

First, based on a command from the keyboard 44, the magnetic head 12 moves in the radial direction of the floppy disk by a head access mechanism (not shown), and sequentially performs an operation to read information from all tracks (#1 in FIG. 3). ).

The read information (signal) is given to an empty track detection circuit 40 via a preamplifier 14. The empty track detection circuit 40 discriminates whether the track being accessed by the magnetic head 12 is unrecorded or poorly recorded, based on the envelope level of the reproduced signal output from the preamplifier 14. input sequentially.

As a result, the memory within the system controller 42 has the following information:
Whether all tracks are unrecorded or poorly recorded is stored as empty track data (#2).

Next, the system controller 42 records the first track, the second track, and the third track in order from the outermost recording track based on the empty track data stored above (#2).
Truck,...

Information stored in the innermost track (track 8 in FIG. 2A) located at the end of the recorded edge sections in the sequence of recording sections set as the innermost track [8] and transfer this information [8] to floppy disk 1.
Field memory 2 is read from 0 and serves as a save area.
6 to evacuate and hold. To describe this operation in accordance with the configuration shown in FIG. Access to read information [8], → select switch 1
8 → Preamplifier 14-FM demodulation/signal separation circuit 20-A
/D conversion circuit 22→switch circuit 24- through the signal transmission/processing system and stored in the field memory 26 as digital signals (the above-mentioned Y signal and C signal).
Figure 3 #3. #4). In this storing operation, the address generator 46 controlled by the system controller 42 issues an address signal to the field memory 2 to access the memory.

After completing the operation of reading information [8] from the floppy disk 10 and saving and holding it in the field memory 26, which is a save area, the eighth trunk is erased. In this erasing operation, the system controller 42 issues a control signal to cause the magnetic head 12 to access the eighth track of the floppy disk 10, and changes the erasing signal output from the erasing signal generating circuit 36 to the changeover switch 38. Preamplifier 16.
This is done by supplying the magnetic head 12 via the changeover switch 18 (#5 in FIG. 3).

Next, the information [8] saved and held in the field memory 26 is read out and stored in the unrecorded section (the first track in FIGS. 2A and B) located at the most preceding rank in the recording section series. This operation, based on the configuration shown in FIG. 1, is as follows. The address generator 46 controlled by the system controller 42 issues an address signal to the field memory 26 to access the memory, and the information [8] saved and held in the field memory 26 is read out. Each Y signal and C signal in digital form representing 8 signals are transmitted to each corresponding D/A conversion circuit 28 and 30 . switch circuit 3
2, the signal is input to the signal synthesis/FM demodulation circuit 34. The signal synthesis/FM demodulation circuit 34 is a D/A conversion circuit 28
and 30 outputs in analog form are synthesized to form a composite video signal, which is FM modulated and output. This FM modulation output signal is the changeover switch 3
8. Preamplifier 16. The above storage operation is performed by supplying the magnetic head 12 via the switching optical switch 18 (#7 in FIG. 3).

In this next step, the system controller 42 determines whether or not a recorded partition remains after the unrecorded partition or the unrecorded partition sequence at that point in time (#8 in FIG. 3).
.

If it is determined that a recorded section remains, the operations from #1 in FIG. 3 described above are repeated. That is, the system repeats the above-described operations based on newly stored empty track data from the empty track detection circuit 40.

When it is determined that there are no recorded sections left, the system ends its operation.

As a result of the above, the sequential recording sections in the recording area of the information recording medium (the circular recording tracks formed sequentially from the outer circumferential side on the floppy disk) are divided into the sections located first in the sequence of recording sections (the floppy disk A series of low recording sections (in this example, recorded information [8], [6], [3], [ 5] are recorded in this order to form the 1st, 2nd, 3rd and 4th tracks). Further, since dubbing is not performed between recording sections of relatively low quality (between recording tracks on the relatively inner circumferential side), deterioration in recording quality is unlikely to occur during the process of reconfiguring the recording order.

The embodiment shown in FIG. 1 uses a pickup means (magnetic head 12
), but as mentioned above, a series of low recording partition areas are formed in the recording area of the information recording medium, so when the recorded information is sequentially played back, the sequential recording partitions to be played back ( It is no longer necessary to skip feed the pickup means to prevent unnecessary signals from being output due to some of the recording racks being unrecorded. configuration becomes very simple.

In the embodiment shown in FIG. 1, a floppy disk is used as the information recording medium, but the idea of the present invention is that the earlier the recording partitions are in the sequence, the higher the relative height. The present invention is effective when applied to all information recording systems that use recording media capable of high-quality recording, and a hard disk, for example, may be used as the information recording medium.

In addition, in the present invention, the original partition in which the re-recorded information was recorded is erased, but it is technically possible to not erase the information depending on the case without following this idea. It is.

[Effects of the Invention] According to the present invention, in an information recording system that uses a recording medium in which recording of higher quality is possible in a partition located earlier in the sequence of recording partitions, the loaded When recorded sections and unrecorded sections are mixed in the sequential recording sections (recording tracks) in the information recording area of the recording medium, operations such as organizing the recording state are automatically performed, and the Since the data can be reconfigured so as not to include unrecorded sections, it becomes easy to check the remaining amount of unrecorded sections.

In addition, since dubbing is not performed between relatively low-quality recording sections (between relatively inner recording tracks),
Recording quality is less likely to deteriorate during the process of reconfiguring the recording order.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an overview of a still video floppy disk system which is an information recording system as an embodiment of the present invention, and FIG.
In the sequential recording sections in the recording area of the information recording medium (in the example of FIG. 1, annular recording tracks formed sequentially from the outer circumferential side on the floppy disk), the section located first in the sequence of recording sections. To conceptually explain the operation of forming a series of recorded partition areas by filling them in order from the (outermost track on a floppy disk) side so that there are no unrecorded partitions in between. FIG. 3 shows that the system of the present invention shown in FIG.
2 is a flowchart for explaining the operation when functioning as explained with reference to FIG. 2; 10... Floppy disk 12... Magnetic head 20... FM demodulation/signal separation circuit 22... A/D conversion circuit 26... Field memory 28. 30... D/A conversion circuit 34. ... Signal synthesis/FM demodulation circuit 36 ... Erasing signal generation circuit 40 ... Empty track detection circuit 42 ... System controller 46 ... Address generator Patent applicant Olympus Optical Industry Co., Ltd. 1-1 Fig. 3

Claims (1)

[Claims] A predetermined one section in a recording area having a plurality of sections set according to a predetermined sequence in the information recording medium is assigned to correspond to each predetermined group of recorded information. An information recording system that is designed to allow recording of relatively higher quality in the sections located earlier in the sequence, and which allows recording of relatively higher quality in the partitions located in the earlier position in the sequence, wherein among the recorded partitions in the sequence of the partitions, Recorded information saving means for saving and holding information stored in the last ward side in a predetermined evacuation area; Erasing means for performing an operation of erasing recorded information on this evacuation information storage section after the evacuation is completed; Information re-recording means for storing the recorded information evacuated and held in the evacuation area in the first section among the unrecorded sections in the sequence of the sections, the recorded information saving means , the erasing means, and the information re-recording means in a predetermined order and repeatedly if necessary, so that a series of recorded sections in the recording area of the recording medium is relatively preceded in the order series of the sections. An information recording system characterized in that the information recording system can be reconfigured sequentially from the partitions to be recorded so that no unrecorded partitions are included in the middle.