JPH01237903A - Multiple signal re-constituting device - Google Patents

Abstract

PURPOSE:To change data corresponding to a picture by changing a data signal with a data changing means after a picture signal and a data signal are separated by a signal separating means. CONSTITUTION:An address generator 46 controlled by a system controller 42 generates an address signal to a field memory 26, a memory access is executed, information (5) saved and held to the memory 26 is read, respective Y and C signals of a digital mode are inputted through D/A converting circuits 28 and 30 and a switching circuit 22 to a signal synthesizing FM demodulating circuit 34, from there, the FM modulation is executed and outputted as the composite video signals of Y and C signals, this is inputted to one side of mixers 35, the data signal of the DPSK modulating mode, in which the necessary change is executed by the controller 42, is inputted to other side of the mixers 35 and here, the data signal is multiplexed. Next, the controller 42 distinguishes whether or not the non-recorded section and the already recorded section and the already recorded section are remained after the non-recorded section column, and when they are remained, the same action is repeated and executed until they are not remained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides an image signal for each predetermined image, such as an image signal for each round field, in which each corresponding data signal is multiplexed. Each of the composite signals is recorded in a predetermined one section ( The upper part relates to a system in which a single track (one track) is allocated and recorded, and an image signal reproducing/recording device using an electronic still camera, etc. also belong to the concept of the system herein.

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

[Prior Art] For example, recorded information for each predetermined image, such as an image signal for each field, is recorded on an information recording medium such as a floppy disk in sequential recording sections (recording tracks) in the information recording area. Various information recording systems such as electronic still cameras that record data in a corresponding manner have already been proposed (for example, Japanese Patent Publication Nos. 63-1661). Typically, in this type of system, successive recorded sections (each recorded track) on an information recording medium can be selectively erased as desired. Alternatively, image signals may be intermittently applied to successive recording sections during recording (for example, without following the order from the outer track toward the inner track), with unrecorded sections in between. It may also be recorded.

In such a case, the information recording medium will have a state in which recorded edge sections and unrecorded sections coexist in successive 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. Furthermore, in a system that reproduces images using a pickup means, when sequentially reproducing recorded images, unnecessary signals are generated due to unrecorded areas in some of the sequential recording sections (recording tracks) to be reproduced. In order to prevent this from being outputted, the pickup means must be skip-fed, which complicates the system configuration.

In order to cope with such a situation, it may be necessary to later organize the recording state on the information recording medium on which information has been recorded.

That is, the recorded edge sections are placed in sequential recording sections in the recording area of the information recording medium (annular recording tracks formed sequentially from the outer circumferential side on the floppy disk), and the section that is located first in the sequence of recording sections. I want to organize the recording state on the medium so that a series of recorded edge sections are formed by filling them in sequentially from the outermost track on the floppy disk and preventing unrecorded sections from entering in the middle. There is. Alternatively, you may want to change the order of recording.

[Problems to be Solved by the Invention] When sequentially packing the edge sections on the medium or changing the order, it is necessary to It often happens that you want to change the data it contains (eg, dates or other data). However, when performing an operation to move a recording position on a recording medium as described above for a composite image signal formed by multiplexing data signals,
If data corresponding to an image can be changed, the system becomes complicated.

The present invention has been made in view of the above points, and provides an information recording medium in which each image signal for each image is recorded in the form of a composite signal obtained by multiplexing each corresponding data signal. When the information storage medium is loaded, data corresponding to the image (e.g.
It is an object of the present invention to provide a multiple signal reconfiguring device of this type that can change the date and other data and has an extremely simple configuration.

[Means and effects for solving the problem] In order to achieve the above object, the present invention provides a composite signal obtained by multiplexing each corresponding data signal to an image signal for each image. a signal separating means adapted to be input according to a first series regarding the order of images, for separating an image signal and a data signal from a composite signal according to the input first series; and storing the separated data signal. data storage means for changing the data signal stored in the data storage means; data changing means for changing the data signal stored in the data storage means; and changing the separated image signal into a second series related to the order of the plurality of images by storing and reading the separated image signal. a data multiplexing means for selectively extracting each corresponding data signal from the data storage means and superimposing it on the corresponding image signal for each successive image signal output from the series conversion means; After separating the image signal and the data signal by the signal separating means, the data signal can be changed by the data changing means and superimposed on the corresponding image signal again.

[Embodiment] FIG. 1 is a block diagram showing an outline of a still video floppy disk system which is a multiplexed signal reconstruction device as an embodiment of the present invention. In FIG. 1, 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. On the floppy disk loaded in this system, the first track,
An order series is set for each track as a recording section, such as the second track, the third track, . . . , the innermost track. As mentioned above, this information recording system is a still video floppy disk system, in which field image information as a group of information is recorded in FM along with data multiplexed thereto on each track as the recording section. ing. 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 controlled by a changeover switch 18. It is adapted to be selectively connected to the magnetic field 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 generate a Y signal (in this example, a luminance signal and a synchronization signal) and a C signal.
The signal is separated into a signal (in this example, an R-Y/B-Y color difference line sequential signal) and a data signal. FM demodulation/signal separation circuit 2
An A/D conversion circuit 22 for converting the Y signal and C signal into digital signals is connected to the output side of the 0 signal.

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 one memory on the above-mentioned floppy disk.
Field image information for one page recorded on the recording track of the book can be recorded. 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 switch circuit 3.
2 to the input side of the signal synthesis/FM demodulation circuit 34. This signal synthesis/FM demodulation circuit 34 is
The analog Y and C signals output from the /A conversion circuits 28 and 30 are combined to form a composite video signal, which is FM modulated and output. This FM modulation output is supplied to a mixer 35. Mixer 35
The erase signal which is the output of the erase signal generating circuit 36 or the output of the erase signal generating circuit 36 provided separately is connected to be selectively input to the above-mentioned preamplifier 16 by a changeover switch 38. On the other hand, the reproduced signal output from the preamplifier 14 is also supplied 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
2 is given as an input signal. 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 the user to operate the system, and also receives input 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 addition, in the present invention, the above-mentioned FM demodulation and
A signal line for inputting the data signal separated by the signal separation circuit 20 to the system controller 42 and a data signal temporarily stored in the system controller 42 and subjected to necessary corrections or changes by operations from the keyboard 44. A signal line is provided for supplying the above-mentioned mixer 35.

In the above configuration, the signal separation means in the concept of the present invention is provided by the FM demodulation/signal separation circuit 20, the data storage means is provided by a required functional section of the system controller 42, and the data modification means is provided by the keyboard 44 and the system controller 42. The sequence conversion means is configured by the field memory 26 . System controller 4
2 required functions and address generator 46. D
/A conversion circuits 28, 30. Signal synthesis/FM demodulation circuit 34
Furthermore, the data multiplexing means is configured by the necessary functional units of the system controller 42 and the mixer 35, etc.
Each consists of 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 is a diagram showing the frequency spectrum allocation of recording signals in the recording format of a standardized still video floppy disk system. The luminance signal is FM modulated and recorded, and the R-Y and B-Y color difference signals are 1
FM modulation recording is performed in a so-called color difference line sequential relationship for each horizontal scanning period. In addition, data such as field/frame recording and track number 9 are frequency-multiplexed recorded using DPSK modulation (differential phase modulation). This DPSK modulation is based on the following rules. A period 4H, which is four times one horizontal scanning period H, is one bit period (bit rate), and if the phase of the carrier wave in this period is in phase with the phase of the carrier wave in the previous one bit period, then that one bit.

The value of the bit (period) is 0'', and if the phase of the carrier wave in the current period is opposite to the phase of the carrier wave in the previous 1 bit period, the value of that 1 bit (period) is ``1''. According to the standard, the frequency of this carrier wave is 1 of the horizontal scanning frequency (fH).
It is set as 3 times.

FIG. 3 is a diagram showing bit allocation of data signals on a track. In the figure, H represents one horizontal scanning period.

As shown in the diagram, the starting point (
4H 28H or 28.5H after the leading edge of the synchronization signal
The section (1 bit section) is used as an initial bit, and the following <8H section (2 bit section) is allocated for identification data of field/frame recording. When the data in this 2-bit section is “00pa”, field recording is performed.
"01" or "10" indicates frame recording. The identification data of this field/frame recording is called an ID code, and the above standards stipulate that this ID code should be recorded when recording a frame. A track number is represented by a BCD code using a 7-bit section following this 2-bit section. The year, month, and day are represented by a BCD code using a 19-bit interval.

FIG. 4 shows sequential recording sections (in the example of FIG. 1, annular recording tracks formed sequentially from the outer circumferential side on the floppy disk) in the recording area of the information recording medium by the still video floppy disk system of FIG. )
A series of low-recording partition areas is formed by sequentially packing the recording partitions from the first partition in the sequence (the outermost track on the floppy disk) so that there are no unrecorded partitions in between. FIG. 3 is a diagram for conceptually explaining a case where an operation is performed. 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 4, (1), (2), ..., (7), (
8) is the number of the annular recording track formed sequentially from the outer circumferential side on the floppy disk, and the number inside the rectangular frame is the number representing each image signal recorded on the track. In FIG. 4A, this number matches the recording track number.

In the figure, × represents an unrecorded track. “′MEM”
Blocks marked with are saved and saved in the field memory 26.
Represents retained record information. That is, in FIG. 4A, the first track has recorded information [1], the second track has recorded information [2], the fifth track has recorded information [5], and the seventh track has recorded information [7]. However, the recording information [8] is recorded on the eighth track, and the third . The fourth and sixth tracks are unrecorded tracks (empty tracks).

After the recorded information [5] of the fifth track is saved and held in the field memory 26 in the state shown in FIG. 4A, the state shown in FIG. 4B is achieved by erasing the fifth track. Next, the recorded information [5] in the field memory 26 is stored in the third track, which is the unrecorded section (empty track) located at the most preceding rank in the section series of the recording area. As a result, the state shown in FIG. 4C is reached. In this state, the recorded information [7] of the seventh track is saved and held in the field memory 26, and then the seventh track is erased, resulting in the state shown in the fourth diagram. Furthermore, the recorded information [7] in the field memory 26 is stored in the fourth track, which is the empty track located at the most preceding position in the state shown in the fourth diagram.

As a result, the state shown in FIG. 4E is obtained. Below, regarding the record information [8] of the 8th track, record information [5 and [7]
] By performing the same operations as described above, the state shown in FIG. 4G is finally achieved through the state shown in FIG. 4F.

In the operation described above with reference to FIG. 4, when the image information once saved and held in the field memory 26 is stored in a new track, it is separated by the FM demodulation/signal separation circuit 20, stored in the system controller 42, and changed as required. The resulting data signals are mixed by the mixer 35, superimposed on the image signal, and re-recorded.

In addition, if we look at Figure 4G, this system can be used to write data into 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 sequential order of the recording sections. Fill in the first section (the outermost track on the floppy disk) in order, so that there are no unrecorded sections in the middle, and fill in a series of low recording sections (in this example, the recorded information [
1], [2 pieces, [5], [7F.

It is easy to understand that tracks [8] are recorded in this order to form a track 1.2.3.4.5. In addition, according to this system, when a series of low-recording partition areas is formed by filling them in order as described above so that no unrecorded partitions are included in the middle, The recording order is the order in the original sequence (1-2→
5-7→8) is maintained.

The operation of the system of the present invention of FIG. 1 will now be described in detail when it functions as described with respect to FIG.

First, based on a command from the keyboard 44, the magnetic head 12 is moved in the radial direction of the floppy disk by a head access mechanism (not shown) and sequentially reads information from all tracks.

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 has an unrecorded edge or a recorded edge based on the envelope level of the reproduced signal output from the preamplifier 14, and sends a discrimination signal to the system controller 42. Enter sequentially. As a result, the memory in the system controller 42 stores information regarding all tracks, whether they are unrecorded or have recorded edges, as empty track data.

Next, based on the empty track data stored as described above, the system controller 42 sequentially selects the first track, the second track, the third track, etc., starting from the outermost recording track. Inner track, the first unrecorded division or unrecorded division sequence in the sequence of recording divisions (in FIG. 2A, the third track, the first The information [5] stored in the recorded edge section (the fifth track in FIG. 2A) located immediately after the fourth track (track 4) is identified, and this information [5] is read out from the floppy disk 10 to serve as the evacuation area. It is saved and retained in the field memory 26.

This operation, based on the configuration shown in FIG. 1, is as follows. When the system controller 42 identifies the relevant information [5] as described above, it issues a control signal to the magnetic head 12.
Access the fifth track of the floppy disk 10 and read out the information [5] → changeover switch 18 → preamplifier 14 - FM demodulation/signal separation circuit 20 - A/D conversion circuit 22 → switch circuit 24 → The signal is stored and retained in the field memory 26 as a digital image signal (the above-mentioned Y signal and C signal) through a signal transmission/processing system.

In this storage/retention operation, the address generator 4 controlled by the system controller 42
6 issues an address signal to the field memory 26 to access the memory.

Information [5] is a composite signal in which data is multiplexed on an image as explained with reference to FIGS. 2 and 3,
In the system of the present invention, when the information [5] is read out as described above, the image signal (Y signal and C signal) and the data signal in the DPSK modulation mode are separated in the FM demodulation/signal separation circuit 20, The data signal is stored in memory within the system controller 42 in DPSK modulation.

After completing the operation of reading information [5] from the floppy disk 10 and saving and holding it in the field memory 26, which is a save area, the fifth track is erased. In this erasing operation, the system controller 42 issues a control signal to access the magnetic head 12 to the fifth track of the floppy disk 1o, 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.

Next, the information [5] saved and held in the field memory 26 is read out and stored in the unrecorded section (third track in FIGS. 2A and B) located at the most preceding rank in the recording section series.

This operation will be explained in more detail with reference to FIG.

The address generator 46 controlled by the system controller 42 issues an address signal to the field memory 26 to perform memory access, and the information [5] saved and held in the field memory 26 is read out from the field memory 26. Each Y signal and C signal in digital form to be read out is read out from each corresponding D signal in the above-mentioned order.
/A conversion circuits 28 and 30. The signal is input to a signal synthesis/FM demodulation circuit 34 via a switch circuit 32. The signal synthesis/FM demodulation circuit 34 includes D/A conversion circuits 28 and 3.
The Y signals and C signals in analog form, which are the respective outputs of 0, are synthesized to form a composite video signal, which is FM modulated and output. This FM modulated output signal is supplied to mixer 35 as one input. Further, the data signal in the DPSK modulation mode, which has undergone the necessary changes in the system controller 42, is supplied to the mixer 35 as the other input. In the mixer 35, a data signal in the DPSK modulation mode, which has been changed as required by the system controller 42, is multiplexed onto this FM modulation output. Required changes regarding the data signal include, for example, changes to the track number data and changes to the year, month, and day data as described above with reference to FIG. This multiplexed FM modulation output signal is transmitted to the selector switch 38. Preamplifier 16. The above storage operation is performed by supplying the magnetic head 12 via the changeover switch 18.

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.

Here, when it is determined that recorded sections remain, the same operations as 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 recorded edge section areas (in this example, recorded information [1], [2], [5], [7], [8
] are recorded in this order to form the first rack (2.3, 4.5).

In the system of the present invention, recorded information [5], [7] that is subject to re-recording as described above.

[8] is a multiplexed data signal in the DPSK modulation mode that has been changed as required by the system controller 42. Therefore, for example, even if re-recorded,
If the data is updated in accordance with this re-recording, problems such as track numbers becoming inconsistent will not occur. To make changes to the DPSK modulated data signal using the system controller 42, use the keyboard 4.
4, various operations other than those described above can be performed.

In addition, in the system of this example, when a series of recorded edge division areas are formed by filling them in order as described above and preventing unrecorded divisions from entering in the middle, this series of recorded edge division areas The order of records in is the order in the original sequence ([1
]-[2]=[5]→[7]-[8]).

The embodiment shown in FIG. 1 uses a pickup means (magnetic head 12
), but as mentioned above, a series of recorded edge sections are formed in the recording area of the information recording medium, so when the recorded information is sequentially reproduced, the sequential recording sections to be reproduced are Some of the recording tracks (recorded tracks) are unrecorded, so useless signals are output.

There is no need to skip feed the pickup means to prevent the pickup from being damaged, and the system configuration becomes much simpler than in the past.

Although the embodiment shown in FIG. 1 above uses a floppy disk as the information recording medium, the idea of the present invention is universally applicable regardless of the type of information recording medium. For example, magnetic drums, hard disks, magneto-optical recording media.

It may also be a solid state memory or the like.

[Effects of the Invention] According to the present invention, when an information recording medium is loaded in which information is recorded in the form of composite signals obtained by multiplexing each corresponding data signal to an image signal for each image, In addition, data corresponding to the image (for example, date and other data) can be changed when the recorded sections on the information recording medium are packed in order or the order is changed. The configuration for such operations becomes extremely simple.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an overview of a still video floppy disk system which is a multiplexed signal reconstruction device as an embodiment of the present invention, and FIG. 2 is a block diagram showing a recording signal in a standardized recording format of the still video floppy disk system. 3 is a diagram showing the bit allocation of the data signal on the track. FIG. 4 is a diagram showing the bit allocation of the data signal on the track. FIG. 4 is a diagram showing the bit allocation of the data signal on the track. In the sequential recording sections (in the example shown in 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 (the outermost circumferential track on the floppy disk) FIG. 4 is a diagram for conceptually explaining a case where a series of recorded edge partition areas are formed by sequentially filling the area from the track side so that no unrecorded partitions are included in the middle. 10... Floppy disk 12... Magnetic head 20... FMti tuning/signal separation circuit 22... A/D conversion circuit 26... Field memory 28. 30... D/A conversion circuit 35. ... Mixer 34 ... Signal synthesis/FM demodulation circuit 36 ... Erasing signal generation circuit 40 ... Empty track detection circuit 44 ... Keyboard 42 ... System controller 46 ... Address generation patent Applicant: Olympus Optical Industry Co., Ltd.:′.

Claims (1)

[Scope of Claims] A composite signal obtained by multiplexing each corresponding data signal to an image signal for each image can be input according to a first sequence regarding a predetermined order of a plurality of images. a signal separating means for separating an image signal and a data signal from the composite signal according to the first series; a data storing means for storing the separated data signal; and changing the data signal stored in the data storing means. a series converting means for converting the separated image signal into a second series related to the order of the plurality of images by storing and reading the separated image signal and outputting the same; and sequential images output from the series converting means. A multiplexed signal reconstruction device comprising: data multiplexing means for selectively extracting data signals corresponding to each signal from the data storage means and superimposing them on a corresponding image signal.