JP3101279B2 - Information signal recording / reproducing device - Google Patents

Description

The present invention relates to a recording operation for recording an information signal on a recording medium,
The present invention relates to an information signal recording / reproducing apparatus having a function of performing a reproducing operation of reproducing an information signal recorded on the recording medium and an erasing operation of erasing an information signal recorded on the recording medium.

[Conventional technology]

2. Description of the Related Art Conventionally, various devices for erasing information recorded on a track formed on a recording medium as an erasing device are known.

[Problem to be solved by the invention]

However, as a device having such an erasing function, a small device, for example, a device that handles a small medium called a still video floppy needs a reproducing function or a recording function in addition to the erasing function, and incorporates many of these functions. There is a problem that it is difficult to improve operability.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an information signal recording / reproducing apparatus in which the number of operation members can be reduced without impairing operability even if the apparatus has multiple functions, and the configuration of the apparatus is simplified. And

[Means for solving the problem]

In order to achieve the above object, an information signal recording / reproducing apparatus of the present invention has a recording operation of recording an information signal on a recording medium,
An information signal recording / reproducing apparatus having a function of performing a reproducing operation of reproducing an information signal recorded on the recording medium and an erasing operation of erasing an information signal recorded on the recording medium, wherein the information signal recording / reproducing apparatus performs the recording operation. An operation mode selection member operated to select one of a recording mode and a reproduction mode for performing the reproduction operation, and an operation member operated to set a recording operation mode in the recording mode Wherein each time the operation member is operated, the recording operation mode setting operation member for setting any one of a plurality of different recording operation modes different from each other, and the operation mode selection operation member are operated Accordingly, when the recording mode is selected, the recording according to the recording operation mode set by operating the recording operation mode setting member is performed. When the reproduction mode is selected by operating the operation mode selection operation member, the operation of the present apparatus is performed so that the erasing operation is performed by operating the recording operation mode setting operation member. And control means for controlling.

(Operation)

According to the above configuration, an operation of erasing an information signal recorded on a recording medium can be performed without providing a dedicated operation member.

〔Example〕

In one embodiment of the present invention described below, a still video recording device that forms concentric tracks on a disk is exemplified, but the present invention is not limited to such a device, and the storage means may be a card other than a disk. Shape or tape shape.

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

 Hereinafter, an apparatus according to an embodiment of the present invention will be described.

FIG. 1 is a block diagram showing the configuration of the apparatus of the present embodiment. In FIG. 1, reference numeral 1 denotes a magnetic disk as a recording medium, 2 denotes a magnetic disk that moves in the radial direction of a rotating magnetic disk 1, and A magnetic head for recording, reproducing, and erasing signals on a track formed on the magnetic disk 1, a motor 3 for rotating the magnetic disk 1, a motor servo 4 for controlling the motor 3 and rotating the magnetic disk 1 at a constant speed. A circuit 5 for moving the magnetic head 2 in the radial direction of the magnetic disk 1, and a head moving mechanism for positioning the magnetic head 2 on a track formed concentrically on the magnetic disk 1; 6, an optical system including a photographic lens; A camera unit 7 includes a shutter, an image sensor that converts image information photographed by an optical system into an electric signal, and the like. The electric signal output from the camera unit is subjected to FM modulation or the like. A recording signal processing circuit which performs signal processing to convert the signal into a signal suitable for recording on the magnetic disk and supplies the signal to the magnetic head 2 via the SW 1, and a reproducing signal 8 from the track on the magnetic disk 1 from the magnetic head 2. Is a reproduced signal processing circuit to which the input signal is input via SW1,
A reproduction signal processing circuit that performs signal processing such as M demodulation, converts the signal into an original video signal, and outputs the video signal to a video signal output terminal. Reference numeral 9 denotes an erase signal supply circuit for supplying an erase current to the magnetic head 2 via SW1. Reference numeral 10 denotes a system control circuit for controlling the apparatus. The system control circuit 10 includes a motor servo circuit 4, a head moving mechanism 5, a camera unit 6, a recording signal processing circuit 7, a reproduction processing circuit 8, an erasure signal supply circuit 9, an SW1 and the like. Is controlled. Reference numeral 11 denotes an operation unit for inputting commands according to various modes to the system control circuit 10, and the release switch 21 and the FWD switch 2
3. It has the following switches such as a REV switch 25 and a mode switch 27. 12 is controlled by the system control circuit 10.
This is a display section for displaying information related to each mode, and includes a 2-digit 7-segment display. Reference numeral 13 denotes a power supply unit for supplying power to the apparatus, whereby each block of the apparatus is supplied with power. Reference numeral 20 denotes a power switch for switching whether to supply power from the power supply unit 13 to each unit of the apparatus. Reference numeral 14 denotes a 1/4 voltage divider that divides the power supply voltage output from the power supply unit 13 into 1/4, and 15, 16, and 17 input signals output from the 1/4 voltage divider 14 to the + terminal. Also-
The terminals are voltage comparison circuits to which preset voltages V1, V2, V3 are input. In addition, the voltage comparison circuits 15,1
The output signals of 6, 17 are output from the system control circuit 10 described above.
Has been entered. 19 is a terminal for outputting the image signal processed by the reproduction signal processing circuit 8 to the outside, 21 is a release switch for recording an image, 25 is an FWD switch for instructing the head 2 to move inward. Reference numeral 23 denotes a REV switch for instructing the head 2 to move to the outer peripheral side, 27 denotes a switch for setting various modes among the set recording modes, 29 denotes a recording mode, an erasing mode, a reproducing mode, and A switch for setting the lock mode. By setting the lock mode, the switch 20 is set.
Is turned off, and the power of the entire apparatus is turned off. Reference numeral 31 denotes a recording presence / absence determining circuit for determining from the output of the head 2 whether or not there is a recording of the track accessed by the head 2;
Is a memory for storing the output of the system control circuit 10, for example, the detection result of the presence or absence of recording of each track and the number of the track currently being accessed by the head 2. Reference numeral 35 denotes a disk exchange detection circuit, which detects the exchange of the medium by the photocouplers 35a and 35b. Reference numeral 37 denotes an innermost or outermost detecting circuit for detecting that the head 2 has reached the innermost or outermost circumference. Reference numeral 40 denotes a timer circuit for detecting the operation time of the apparatus, and the timing of starting the clearing and counting is controlled according to the output of the system control circuit 10.

Next, the external appearance of the apparatus of this embodiment is shown in FIGS.
This will be described with reference to the drawings.

FIG. 2 is a perspective view (from the front right) of the apparatus of the embodiment of the present invention, FIG. 3 is a perspective view (from the front left) of the apparatus shown in FIG. 2 with the exterior member removed, and FIG. FIG. 5 is a cross-sectional view of the optical system, and FIG. 5 is an external view of the apparatus shown in FIG.

The exterior member of the apparatus shown in FIG. 2 mainly includes an upper cover 102, a lower cover 101, an opening / closing pig 104 constituting a lid member of a video floppy loading section which is a disk used in the apparatus of this embodiment, and And a protective cover 103 attached so as to cover various optical systems from the front.

In FIG. 3 from which these exterior members have been removed, an imaging element 109 is soldered, and a shutter unit 111 containing an imaging lens unit 112 is arranged in front of a substrate 110. In front of the shutter unit 111, a photometric IC 11
4, and the printed circuit board to which the photometric sensor 115 is soldered
113 is fixed to the shutter unit.

Further, the substrate 113 has an escape hole 113- for an imaging optical system.
a and a display LED 116 for self-timer shooting.

As shown in FIG. 2, the protective cover 103 is attached to the imaging block configured as described above from the front with each of the above-mentioned exterior members attached.

In FIG. 4 which is a cross-sectional view of the protective cover 103, the photometric condenser lens 7 and the colorimetric diffusion plate 108 are respectively a photometric IC 114 and a colorimetric sensor 11 mounted on the printed circuit board 113.
5 is attached to the protective cover 103.

Further, a protective glass 119 is provided in front of the protective cover 103.
Is fixed to

The switches described in FIG. 1 are arranged as shown in FIG. 5. In FIG. 5, reference numeral 120 denotes a finder for observing a subject imaged by an imaging optical system, and 122 denotes a flash photography mode. A setting switch 130 is an exposure compensation switch.

In this embodiment, the configuration of the electronic camera can be made thin and easy to use by the configuration as shown in FIG.

Next, the operation of the embodiment configured as described above will be described.

FIGS. 6-1 to 9 are flow charts for explaining the operation of this embodiment.

FIG. 6-1 is a diagram for explaining the overall operation of the apparatus of this embodiment.

This flow is executed by releasing the lock of the switch 29 shown in FIG.

In FIG. 6A, S-00 is a circuit for detecting the presence / absence of a disk in accordance with the outputs of the photocouplers 35a and 35b. If there is no disk, in S-0, as shown in FIG. 10 (b). Is flashed by the display unit 12 and displayed. If there is a disk in S-00, it is detected in S-1 whether or not the disk exchange has been detected by the disk exchange detection circuit 35.
-2 is a step for determining whether or not the reproduction mode (PB mode) is set by the slide switch 29;
-5 is a step for determining whether or not a REC flag described later has been set, S-6 is for determining whether or not the release switch 21 has been turned on. The flow branches off. S-3 in S-2
REV switch 25 when PB mode is not set
Is a step for determining whether or not the switch is turned on.
Is a step for determining whether or not the FWD switch 23 has been turned on. When it is determined "Yes" in each of the steps S-1, S-2, S-3, and S-4, the flow executes the following routines, respectively.

If it is not determined in S-4 that the FWD switch is ON, it is determined whether or not the switch 27 is ON (S-15). If the switch 27 is ON, the mode in the system control circuit 10 is determined. The counter is incremented (S-17).

In the apparatus of this embodiment, a continuous recording mode, a single recording mode, and a self-timer recording mode can be set each time the mode switch 27 shown in FIGS. 1 and 5 is turned on. Figure 10 (f), (g),
The display switches as shown in (h). In order to surely set such a mode, in the apparatus of the present embodiment, the system control circuit 10 has a mode counter therein, and the counter is changed from "0" to "0" every time it is incremented.
The count value is updated cyclically in the order of “1” → “2” → “0”.

When the count value of the mode counter is "0", the single recording mode is set, when it is "1", the continuous recording mode is set, and when it is "2", the self-timer recording mode is set. S-
Following S17, it is determined whether or not the switch 27 has been turned off (S-19), and the flow returns to S17. On the other hand, if the switch 27 is not turned on in S-15, an error of the device is detected, and
When any failure is detected, for example, when the servo of the motor 3 is disabled, a display as shown in FIG. 10D is performed.

If the REC flag is set in S-5, the flow branches to FIG. 6-2 described later if the REC flag is not set in S-6.

If it is determined in step S-6 that the release switch is on, it is determined in step S-7 whether the track accessed by the head has been recorded. If the track has been recorded, recording is disabled. Therefore, the flow branches to FIG. 6-2 described later. If not already recorded, the signal from the camera unit 6 is recorded on the disk 1 by the head 2 via the processing circuit 7 in S-8, and the head 2 is recorded in S-10 in S-10.
Is moved to the next empty track on the inner side of the disk 1 to determine whether the single recording mode or the continuous recording mode is set according to the count value of the mode counter described in S-17. If the single recording mode has been set (S-12), the flow returns to S-13 after confirming that the release switch has been turned off. On the other hand, if it is determined in S-12 that the continuous recording mode has been set, a predetermined time corresponding to the continuous recording interval is maintained (S-14), and the flow returns to S-6.

Next, the routine shown in FIG. 6-2 will be described.

In the following description, the step numbers shown in the flow will be described with circles.

When the disk exchange detection circuit 35 detects that the disk has been exchanged, the control device controls the head moving mechanism until the detection circuit 37 detects that the head has been sent to the innermost circumference, and the recorded track table (not shown). memory
23) are all set to “0” (,). afterwards,
The head 2 is accessed to each track in order from the 50th track, and the discrimination circuit 31 checks whether or not there is a record. indicate. This is, for example, as shown in FIG. Blinking, the number of segments of the liquid crystal can be reduced, and the user can easily understand. If it is detected that the recorded track is not 50 tracks, the head 2 is moved one track to the inner circumference side, that is, the head 2 is moved to an empty track, and the current track position is numerically displayed. If it is detected that the track is not a recorded track, the head is sent to the outer circumference of one track, and
Then, the presence or absence of a record is checked again. In the above, the corresponding address of the table included in the memory 23 is set to "1".

By executing the above flow, the head 2 is positioned on the outermost track among the unrecorded tracks continuous from the inner circumference on the disk 1. When the 50th track has been recorded, a display as shown in FIG. 10A is performed, and a warning is issued to the user.

By executing the above flow, the REC flag is set, indicating that the head 2 has been positioned on an unrecorded track for recording.

After the head is sent over the unrecorded track according to the flow of FIG. 6-1, if the release switch is turned on, the recording is performed as shown in S-8 in FIG. Next, FIG. 7 shows a flow executed when the REV switch is pressed. In FIG. 7, the REV switch 25
When the release switch 21 is turned on with the
If there is no "0" track on the outer circumference, the apparatus does not perform any operation, but in some cases, the head 2 is moved to the nearest "0" track on the outer circumference. If it is determined that the track is unrecorded The number of the track is displayed on the display unit 12, and if it is recorded, the bit of the current track in the recorded track table is set to "1", and the current track becomes the first track or encounters an unrecorded track. Repeat until ~. Head 2 is the first while repeating
If all tracks have been recorded after reaching the track, the flow shifts to the next step. If there is a track of "0" in the track table on the inner circumference side, a search is made on the table in the memory 33, and if there is, the closest track is found. The head is sent to the track of "0" in the table, and if it is not, all tracks are recorded and displayed as shown in FIG. 10 (a).

In the present embodiment, the flow is branched from the upstream to the downstream. However, if such a flow is branched, for example, as shown by a dotted line in FIG. 7, the track in which "1" has already been written in the track table has already been written. Since it is not necessary to determine whether or not the data has been recorded by the determination circuit 31, the time required to move the head to an unrecorded track can be shortened.

Next, the flow of branching in step S-4 shown in FIG. 6-1 will be described with reference to FIG.

In FIG. 8, the release switch 21 is turned on while the FWD button is pressed (), and it is checked whether or not there is a "0" track on the inner peripheral side of the currently accessed track position of the head 2. If nothing is done, move to the nearest "0" track on the inner circumference. The discrimination circuit 31 determines whether or not the track after the movement has been recorded. As a result, if the track has not been recorded, the flow proceeds to the above. If the track has been recorded, the current bit in the recorded track table in the memory 33 is displayed. It is set to “1” to determine whether the current track position is the 50th track. As a result 50
If it is a track, a display indicating that all tracks have been recorded is made as shown in FIG. 10 (a), and if it is not a 50th track, it is again determined whether or not there is a "0" track on the inner peripheral side in the memory 33. A search is made for a track whose corresponding address is "1" from the table.

Next, a routine executed when it is determined to be "Yes" in S-2 shown in FIG. 6-1 will be described with reference to FIG. In this flow, a flow when the system is provided with a reproducing / erasing function will be described.

First, the reproduction state is set. As such setting, the switch SW1 shown in FIG. 1 may be switched to the B side, and the display unit 13 may display the track number currently accessed by the head 2.

In other words, in the recording mode, by executing the steps (1) to (6) in FIG. 6, for example, when all the tracks on the disk 1 have been recorded, the blinking display as shown in FIG. 10 (a) is performed. However, in, the blinking display is stopped, and the display returns to the normal display.

Next, it is determined whether or not the current head position is the first track. If the head position is not the first track, the head is sent to the outer circumference by one track, and whether or not the track is already recorded is stored in the memory 33.
Is discriminated from the table in the table or the output of the discriminating circuit 31, and the bit of the current track of the recorded track table is set to "1". If the bit is not recorded, the current position of the head 2 is again one track. Judgment is made and this operation is continued until the first track is reached.

In the apparatus according to the present embodiment, when a disk is replaced or newly loaded as described in the flow shown in FIG. 6-2, each track is sequentially read from the innermost track of the disk 1 until a recorded track is found. It is determined whether the data is unrecorded or recorded. If it is recorded, "1" is set to each address of the table in the memory 33.

The flow shown in FIG. 9 (1) to (5) detects the presence / absence of a record from the track currently being accessed by the head 2 to the first track. Therefore, according to this embodiment, the switch 29 is inserted after the disk 1 is inserted into the apparatus.
When the playback mode is set, the information on the presence or absence of recording of all the tracks on the disc 1 is written in the table in the memory 33, and the operation for the next mode is performed.
For example, there is an effect that the operation at the time of switching to the recording mode can be performed promptly and quickly.

Next, when it is detected that the track is the first track, the switch SW1 is switched to the B side to start the reproducing operation, and the counting of the timer for setting the reproducing time is started. Then
If the FWD switch 23 is pressed, the head 2 is moved one track inward. If the REV switch 25 has been pressed, the head is moved to the outer circumference by one track.

In addition, if the head 2 is moved in the display section 12,
Then, as shown in FIG. 10 (c), the current access position of the head 2 is displayed.

If the REV switch 25 is not turned on at It is determined whether the mode switch 27 is turned on. If the result of this determination is that the mode switch 27 is not turned on, It is determined whether the reproduction mode has been released. If the mode switch 27 is turned on, it is determined whether or not the release switch 21 is turned on. If the mode switch 27 is turned on, the switch SW1 is connected to the C side to instruct the erasing signal supply circuit 9 to start erasing. Then, as shown in FIG. 10 (e), the 7-segment display for displaying the number of the track accessed by the head 2 flashes twice to indicate that the track is being erased, and the erased track in the table in the memory 33 is displayed. Clear the corresponding address to “0”.

It is determined whether or not the release of the reproduction mode is instructed by the switch 29. When the release of the reproduction mode is instructed, the flow branches to FIG. 6-1. If the switch 29 is not instructed to release the play mode, The output of the timer circuit 40 is detected to determine whether or not reproduction has continued for a predetermined time (for example, about 10 minutes). The power supply by the power supply unit 13 is stopped. Here, it is preferable that the power supply unit 13 stops the power supply to the parts other than the system control circuit 10, and at least the power supply to the motor 3 or the reproduction signal processing circuit 8.

next, It is determined whether or not the switch 21 is turned on at
If switch 21 is on, the flow moves to
Start the playback operation. If switch 21 is not on Like the flow shown in In the playback mode is instructed, and if there is no instruction, The flow branches off. Branches if instructed.

According to the present embodiment, the reproduction operation is automatically stopped after a predetermined time elapses from the timer after the reproduction mode is set and the reproduction operation is started. For those with limited power, it is particularly effective in saving power.

Further, in this embodiment, after the reproduction operation is automatically stopped by the timer, the reproduction operation is started again by turning on the release switch 21, so that a dedicated switch is not required for setting the reproduction mode.

Further, in the present embodiment, when the reproduction mode is set by the switch 29, the flow of (1) to (4) is automatically executed and the reproduction is started, but the present invention is not limited to this, and is indicated by the dotted line in the figure. like Detection of release switch 21 ON, and By providing a step of detecting the reproduction mode by the switch 29, the start of the reproduction operation can be controlled at an arbitrary timing.

Further, when performing erasing, a switch for setting the erasing mode is a switch 27 for setting the recording mode,
Further, a switch for actually executing erasing is set to switch 21.
Therefore, in this embodiment, there is an additional effect that a plurality of complicated functions can be realized without increasing the number of switch operation members.

In the above-described embodiment, the still video apparatus having the configuration shown in FIG. 1 is disclosed as an erasing apparatus having at least one of the recording / reproducing functions and the erasing function. However, the present invention is not limited to such an apparatus. Can be applied to various devices.

Further, in this embodiment, setting means for setting an erasing operation at the time of erasing, setting mode conditions of the recording or reproducing operation at the time of recording or reproduction, and setting means of an erasing preparation operation at the time of erasing. The setting is performed, and the mode switching for switching between the continuous recording mode and the single recording mode is performed at the time of recording or reproduction. However, the present invention is not limited to such a switch, and for example, a trigger switch for performing erasure is used. In the case of recording or reproduction, the same can be applied to a case where it is also used as a switch for setting the mode conditions of other recording and reproduction operations.

Further, the mode conditions of the recording or reproducing operation are not limited to the above-described continuous recording mode and single recording mode, but may be other conditions such as setting of continuous recording speed, field recording mode, and frame recording as mode conditions for recording. The mode may be set.

Further, in the present embodiment, a still video system is disclosed as an example. However, the present invention is not limited to this, and it is needless to say that the present invention can be applied to other various recording or reproducing apparatuses.

Further, the storage means may be a tape-shaped storage medium other than the disk shown in the present embodiment, or may be an optical disk or a solid-state memory.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to this invention, even if it is a multifunction, the number of operation members can be reduced, without impairing operability, and the information signal recording / reproducing apparatus which simplified the structure of the apparatus can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an apparatus according to one embodiment of the present invention, FIG. 2 is a perspective view of the apparatus according to one embodiment of the present invention, and FIG. 3 is an exterior member of the apparatus according to one embodiment of the present invention. FIG. 4 is a cross-sectional view of the optical system of the apparatus of the present embodiment, FIG. 5 is an external view of the apparatus of the present embodiment as viewed from the rear, FIGS. 2, 7 to 9 are flowcharts for explaining the operation of the apparatus of the present embodiment, and FIG. 10 is a view showing a display example of the display unit 12 shown in FIG. 2 Head 5 Head moving function 10 System control circuit 11 Operation unit 12 Display unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 5/02 G11B 5/024

Claims (1)

(57) [Claims] A recording operation for recording an information signal on a recording medium;
An information signal recording / reproducing apparatus having a function of performing a reproducing operation of reproducing an information signal recorded on the recording medium and an erasing operation of erasing an information signal recorded on the recording medium, wherein the recording operation is performed. An operation mode selection member operated to select one of a recording mode and a reproduction mode for performing the reproduction operation; and an operation member operated to set a recording operation mode in the recording mode Wherein each time the operation member is operated, a recording operation mode setting operation member for setting any one of a plurality of different recording operation modes different from each other, and the operation mode selection operation member is operated Accordingly, when the recording mode is selected, the recording operation mode set by the operation of the recording operation mode setting member is followed. When the reproduction mode is selected by operating the operation mode selection operation member by operating the operation mode selection operation member, the operation of the apparatus is performed so as to perform the erase operation by operating the recording operation mode setting operation member. An information signal recording / reproducing apparatus, comprising: a control unit for controlling the information signal.