JPH0281303A - Erasing device - Google Patents

Abstract

PURPOSE:To incorporate many functions to a device of handling a small-sized medium and to improve operability by providing a means of setting an erasing operation at the time of erasing and setting the mode condition of a recording or reproducing operation at the time of recording or reproducing. CONSTITUTION:The setting means sets the erasing operation at the time of the erasing mode and sets the mode of the recording or reproducing operation at the time of the recording or reproducing mode. Namely, the continuous recording mode, single recording mode, and self-timer recording mode can be set at every turning on of a mode switch 27 and a display part 12 is changed over in display according to this setting. A mode counter is provided in a system control circuit in order to surely set the mode and the count value of the counter is cyclically updated like 0 1 2 0 every time when the counter is incremented. The operability is improved and the constitution is simplified in such a manner.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an erasing device, and particularly to setting each erasing mode of the erasing device.

[Conventional technology]

2. Description of the Related Art Conventionally, various devices have been known, such as erasing devices, for erasing information recorded on tracks formed on a recording medium.

[Problem to be solved by the invention]

However, small devices that have such an erasing function, such as devices that handle small media called still video floppies, require playback or recording functions in addition to the erasing function. The problem was that it was difficult to improve sexuality.

SUMMARY OF THE INVENTION In view of these problems, it is an object of the present invention to provide an erasing device that has multiple functions, is easy to operate, and has a simple configuration.

[Means to solve the problem]

In order to achieve the above object, the erasing device of the present invention records,
An erasing device having at least one of a reproduction function and an erasing function, the erasing device having a setting means for setting an erasing operation when erasing and setting mode conditions for the recording or reproduction operation when recording or reproducing. have

[For production]

In the above configuration, the setting means sets an erasing operation when in the erasing mode, and sets a recording or reproducing operation mode when in the recording or reproducing mode.

〔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. It may be in the form of a shape or a tape.

Embodiments of the present invention will be described below with reference to the drawings.

An apparatus according to an embodiment of the present invention will be described below.

FIG. 1 is a block diagram showing the configuration of the apparatus of this embodiment. In FIG. 1, l denotes a magnetic disk as a recording medium, 2 moves in the radial direction of the rotating magnetic disk 1, A magnetic head records, reproduces, and erases signals on tracks formed on the magnetic disk 1, a motor 3 rotates the magnetic disk 1, and a motor servo 4 controls the motor 3 to rotate the magnetic disk 1 at a constant speed. A circuit, 5, a head moving mechanism for moving the magnetic head 2 in the radial direction of the magnetic disk l, and positioning the magnetic head 2 on a concentric track formed on the magnetic disk l; 6, an optical system including a photographing lens, and an aperture; A camera section includes a shutter, a photographing element that converts image information photographed by an optical system into an electrical signal, etc., and 7 performs signal processing such as FM modulation on the electrical signal output from the camera section and records it on a magnetic disk. A recording signal processing circuit 8 converts the signal into a signal suitable for the recording and supplies the signal to the magnetic head 2 via SWI, and 8 is a recording signal processing circuit in which a signal reproduced from the track on the magnetic disk l by the magnetic head 2 is input via SW2. This is a reproduction signal processing circuit that performs signal processing such as FM demodulation, converts it 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 that supplies an erase current to the magnetic head 2 via SWl. IO is a system control circuit that controls the present device, which controls the aforementioned motor servo circuit 4, head moving mechanism 5, camera section 6, recording signal processing circuit 7, and reproduction processing circuit 8.
, the erase signal supply circuit 9, SWI, etc. are controlled. 1
Reference numeral 1 denotes an operation unit for inputting commands according to various modes to the system control circuit 10, and a release switch 21
It has switches to be described later, such as an SFWD switch 23, a REV switch 25, and a mode switch 27. A display section 12 displays information related to each mode by the system control circuit IO, and includes a two-digit seven-segment display. Reference numeral 13 denotes a power supply unit that supplies power to the apparatus, and each block of the apparatus is thereby supplied with power. Further, 2o is a power switch for switching whether or not to supply power from the power supply unit 13 to each part of the apparatus. 14 is the power supply voltage outputted from the power supply section 13.
1/4 voltage dividing circuit that divides the voltage into 4; 15. 16. 17, the signal output from the l/4 voltage divider circuit 14 is input to a child terminal, and one terminal is connected to a preset voltage Vl.
, V2. This is a voltage comparison circuit to which V3 is input. In addition, the voltage comparison circuit 15. 16. The output signal of 17 is input to the system control circuit 10 mentioned above. 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; 23 is a REV switch for instructing movement of the head 2 toward the outer circumference; 25 27 is a switch for setting various modes among the set recording modes; 29 is a switch for recording mode, erasing mode, playback mode, and This is a switch for setting the lock mode,
By setting the lock mode, the switch 2o is turned off, and the power of the entire apparatus is turned off. 31 is a recording presence/absence determination circuit for determining from the output of the head 2 whether or not there is recording on the track accessed by the head 2;
Reference numeral 3 denotes a memory that stores the output of the system control circuit 10, for example, the detection result of whether or not each track is recorded and the number of the track currently being accessed by the head 2.

35 is a disk replacement detection circuit, and a photocoupler 35
A and 35b detect medium exchange. Reference numeral 37 denotes an innermost circumference/outermost circumference detection circuit for detecting whether the head 2 has reached the innermost circumference or the outermost circumference. 4° is a timer circuit for detecting the operating time of the device, and the clearing and counting start timings are controlled according to the output of the system control circuit 1o.

Next, the appearance of the apparatus of this embodiment will be explained using FIGS. 2 to 5.

Fig. 2 is a perspective view of the device according to the embodiment of the present invention (from the right front)
, FIG. 3 is a perspective view (from the front left) of the second illustrated device with the exterior member removed, FIG. 4 is a sectional view of each optical system part,
FIG. 5 shows an external view (from the rear) of the second illustrated device.

The exterior members of the device shown in FIG. 2 mainly include an upper cover lO2, a lower cover 101. It consists of an opening/closing lid 104 that constitutes a lid member of a video floppy loading section, which is a disk used in the apparatus of this embodiment, and a protective cover 103 that is attached to cover various optical systems from the front.

In FIG. 3 with these exterior members removed, an imaging element 109 is soldered and a shutter unit 111 containing an imaging lens unit 112 is disposed in front of a substrate 110. In front of the shutter unit 111, a printed circuit board 113 to which a photometric IC 114 and a photometric sensor 115 are soldered is fixed to the shutter unit.

Furthermore, the board 113 has an escape hole 11 for an imaging optical system.
3-a and LED 116 for display during self-timer shooting
is placed.

The protective cover 103 is attached to the imaging block configured in this way from the front, as shown in FIG. 2, 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 diffuser plate 108 face the photometric IC 114 and the colorimetric sensor 115, respectively, which are mounted on the printed circuit board 113. It is attached to the protective cover 103 in a similar manner.

Furthermore, a protective glass 119 is placed in front of the protective cover 1.
It is fixed to 03.

In addition, the switches explained in FIG. 1 are arranged as shown in FIG. 5, where 120 is a finder for observing the subject imaged by the imaging optical system, and 122 is a mode camera for flash photography. The shape can be made thin and easy to use.

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

FIGS. 6-1 to 9 are flowcharts illustrating the operation of this embodiment.

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

Incidentally, this flow is performed when the Loc of the switch 29 shown in FIG.
This is executed by canceling k.

In FIG. 6-1, 5-00 is a photocoupler 36a.

This circuit detects the presence or absence of a disc according to the output of the disc 35b, and if there is no disc, the display unit 12 flashes "D/7" at S-o as shown in FIG. 10(b). Is displayed. If there is a disk in 5-OO, S-
Step 1 is a step in which the disk change detection circuit 35 detects whether or not a disk change has been detected, step S-2 is a step in which it is determined whether the playback mode (PB mode) is set by the slide switch 29, and step S-5 is R described later.
determining whether the EC flag is set;
S-6 determines whether the release switch 21 is turned on or not. If it is turned on, the flow branches to S-7; if not, the flow branches to S-3. S-3 is a step in which it is determined whether the REV switch 25 is turned on when the PB mode is not set in S-2, and S-4 is a step in which it is further determined whether the FWD switch 23 is turned on. It is a step. Incidentally, when the determination is "Yes" in each of steps S-1, S-2, S-3, and S-4, the flow executes the routines (2), (2), (2), and (2), which will be described later.

Further, 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), and 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, the continuous recording mode, single recording mode, and self-timer recording mode can be set each time the mode switch 27 shown in FIGS. 1 and 5 is turned on. are shown in Figure 10 (f), (g),
The display changes as shown in (h). In order to reliably set such a mode, the system control circuit 10 in the apparatus of this embodiment has an internal mode counter, and this counter is reset to "0" each time it is incremented.
The count value is cyclically updated as follows: →"l"→"2"→"On."

Also, when the count value of the mode counter is "0", it is single recording mode, when it is "1", it is continuous recording mode, and "2".
”, self-timer recording mode is set.

Following step 5-17, it is determined whether or not the switch 27 is turned off (S-19), and the flow returns to [F]. On the other hand, 5
-15, if the switch 27 is not turned on, an error is detected in the device, and when some kind of failure is detected, for example, the servo of the motor 3 is disabled, the process shown in FIG. 10(d)
Display as shown below.

Also, if the REC flag is set in S-5 and not set in S-6, then the REC flag is set in Figure 6-2 (■), which will be described later.
Heflo branches.

Furthermore, when it is determined in S-6 that the release switch is on, it is determined in S-7 whether the track that the head is accessing is already recorded, and if it is recorded, it is displayed that recording is not possible. Therefore, the flow branches to (2) in Figure 6-2, which will be described later. If the recording has not been completed, the camera section 6 will be displayed in S-8.
An image signal is recorded on the disk 1 by the head 2 via the processing circuit 7, and at 5-10, the head 2
is moved to the next empty track on the inner circumferential side of the disk L, and it is determined whether the single recording mode or continuous recording mode is set according to the count value of the mode counter explained in 5-17. In step S-12), if the single recording mode is set, it is confirmed in step 5-13 that the release switch is turned off, and the flow returns to step (2). On the other hand, if it is determined in step 5-12 that the continuous recording mode is set, a predetermined period of time corresponding to the continuous recording interval is maintained (step S-14), and the flow returns to step S-6.

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

In the following explanation, the number of the step shown in the flow is
Circle it and explain.

■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 also controls the recorded track table. (included in the memory 23) are all set to "0" (■, ■). Thereafter, the head 2 is made to access each track in order from the 50th track, and the determination circuit 31 checks whether there is any recording.
(2) If the 50th track has been recorded, (2) a message "50th track recorded" is displayed in the 7 segments of the display section 12;

For example, if this is done by blinking 58 as shown in FIG. 10(a), the number of segments on the liquid crystal can be reduced and it will be easier for the user to understand. Also, if it is detected in ■ that the number of recorded tracks is not 50, then ■ head 2
1 track to the inner circumferential side, that is, head 2 is sent to an empty track.
Move and ■Display the current track position numerically. If it is detected that the track is not a recorded track at (2), the [phase] head is sent to the outer periphery of one track, and the presence or absence of recording is checked again at (2). In addition, in (2), the corresponding address of the table included in the memory 23 is set to "1".

By executing the above-described flow, the head 2 is positioned on the outermost track of the continuous unrecorded tracks from the inner circumference of the disk 1. If the 50th track has already been recorded, a display as shown in FIG. 10(a) is displayed to warn the user.

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

After the head is moved onto an unrecorded track according to the flowchart of FIG. 6-1, when the release switch is pressed, recording is performed as shown in S-8 of FIG. 6-1.

Next, FIG. 7 shows the flow (2) executed when the REV switch is pressed. In Fig. 7, REV switch 2
5 is pressed and the release switch 21 is turned on, if there is no "0" track on the [phase] outer circumferential side, the device will not perform any operation, but if there is, the [phase] head 2 will be moved to the outer circumferential side. Move to the nearest “0” track on the side. ■If it is determined that the track has not been recorded (■The track number will be displayed on the display unit 12, and if it has been recorded, [
Set the bit of the current track in the recorded track table to "B", and set the current track to the first track at [phase], 0.
Repeat O~○ until a track is reached or an unrecorded track is encountered. [Phase] While repeating ~■, press Head 2.
When the track reaches the first track and all have been recorded, the flow moves to [phase], and the “O” in the track table is placed on the inner circumference side.
The table in the memory 33 is searched to see if there is a track in the memory 33, and if there is, the head is sent to the track "0" in the track table closest to [phase], and if not, the head is sent to the track "0" in the track table closest to [phase].
All tracks are displayed as shown in FIG. 0(a).

In this example, the flow was branched from O to ■, but
For example, if this flow is branched to [phase] as shown by the dotted line in FIG. 7, it is possible to check whether or not a track has already been recorded in the track table for which "l" has been written. Since it is not necessary to use the discrimination circuit 31 to determine whether the recorded data is recorded or not, the time required to move the head to an unrecorded track can be shortened.

Next, using FIG. 8, the flow indicated by ◎, which branches at step S-4 shown in FIG. 6-1, will be explained.

In FIG. 8, when the release switch 21 is turned on while the FWD button is pressed (■), it is determined whether there is a "0" track on the inner circumference side of the track position currently being accessed by the head 2. Check it, and if it is found, do nothing, but if it is found, move to the nearest "0" track on the inner circumferential side of the [phase]. ■ The determination circuit 31 determines whether or not the track after the movement has been recorded. If the track is unrecorded, the flow moves to the above-mentioned ■; The bit is set to "1", and it is determined whether the current track position is the 50th track or not.

If the result is 50 tracks, all tracks are displayed as shown in Fig. 10(a), and if it is not the 50th track, a check is made again to see if there is a "0" track on the inner circumference side. The corresponding address from the table in memory 33 is “
Search for the track with "l", if found, go to [phase],
If not, it will end.

Next, using FIG. 9, in S-2 shown in FIG. 6-1, “
The routine ◎ executed when the determination is "Yes" will be explained using FIG. 9. In this flow, the flow when this system is provided with a playback/erasing function will be explained.

First, in step (3), the playback status is set. Such settings include switching the switch SWI shown in FIG. 1 to the B side and causing the display section 13 to display the track number currently being accessed by the head 2.

That is, in the recording mode, by executing steps ① to [phase] shown in Figure 6-2, for example, if all the tracks on disk 1 have been recorded, a blinking display as shown in Figure 10(a) will be displayed. However, at (3), the blinking display is stopped and the display returns to the normal display.

Next, (1) determines whether the current head position is on the first track, and if it is not the first track, sends the O head one track to the outer periphery; (2) checks whether the track has been recorded in the memory 33;
(1) Set the bit of the current track in the recorded track table to "B", and if it is not already recorded, check again whether the current head 2 position is on the 1st track or not. This operation is continued until the first track is reached.

In the apparatus of this embodiment, as explained in the flowchart shown in Figure 6-2, when a disk is replaced or newly loaded, each track is sequentially changed from the innermost track of disk 1 until a recorded track is found. It is determined whether the data is unrecorded or recorded, and if it is recorded, "l" is set at each address of the table in the memory 33.

The flow shown in (1) to (2) in FIG. 9 detects the presence or absence of recording on the tracks from the track currently being accessed by the head 2 to the first track. Therefore, according to this embodiment, after inserting the disk l into the device, the switch 29
When the playback mode is set by This has the effect of allowing the operation to be performed quickly and quickly.

Next, when the first track is detected at ◎, the SWI is switched to the B side to start the playback operation, and at the same time, a timer for setting the playback time starts counting. Then @
If the FWD switch 23 is pressed, ■ head 2 is set to 1.
Send the track to the inner circumference. Further, if the @REV switch 25 is pressed, the O head is sent to the outer circumference by one track.

Incidentally, when the head 2 is moved in [phase], O, the current access position of the head 2 is displayed on the display section 12 as shown in FIG. 10(C).

If the REV switch 25 is not turned on in (■), it is determined whether the commode switch 27 is turned on, and as a result of this determination, if the mode switch 27 is not turned on, (■) If the mode switch 27 is turned on, it is determined whether the O release switch 21 is turned on or not, and if it is turned on, the switch SWI is connected to the C side and the erase signal supply circuit starts erasing. 9, as shown in FIG. 10(e), the 7-segment display that displays the number of the track being accessed by the head 2 blinks twice to indicate that the track is being erased, and the data in the memory 33 is The address corresponding to the erased track in the table is cleared to "0". 6-1, the flow branches to ■ in FIG. For example, it is determined whether the reproduction has continued for about 10 minutes, and when the determination is made, the power supply by the power supply unit 13 is stopped.

Here, it is preferable that the power supply unit 13 stops supplying power to devices other than the system control circuit 10 (both to the motor 3 or the reproduction signal processing circuit 8).

Next, at (W), it is determined whether the switch 21 is on or not. If the switch 21 is on, the flow moves to [phase] again and the regeneration operation is started. (Similar to the flow shown in (■), it is determined in (■) whether cancellation of the playback mode is instructed, and if there is no instruction, the flow branches to (D). If there is an instruction, the flow branches to 0.

According to this embodiment, after the playback mode is set and the playback operation is started, the playback operation is automatically stopped after a predetermined time has elapsed using a timer, so the device is small and has a high power supply capacity like the device of this embodiment. This is especially effective in terms of power saving for devices with limited energy consumption.

Furthermore, in this embodiment, after the playback operation is automatically stopped by the timer, the playback operation is restarted by turning on the release switch 21, so a dedicated switch is not required for setting the playback mode.

Furthermore, in this embodiment, when the playback mode is set using the switch 29, the flow from [stock] to [phase] is automatically executed to start playback, but the present invention is not limited to this. As shown by the dotted line in the figure, it is also possible to control the start of the reproducing operation at an arbitrary timing by providing the steps of (1) detecting whether the release switch 21 is on and (detecting the reproducing mode using the rib switch 29).

Further, the switch for setting the erasing mode when erasing is set as the switch 27 for setting the recording mode,
Furthermore, switch 2 to actually execute the deletion.
1, this embodiment has the additional advantage that a plurality of complex functions can be realized without increasing the number of switch operation members.

In the above-described embodiments, 1. a live video device whose configuration is shown in FIG. It can also be applied to various devices.

Furthermore, in this embodiment, a setting means is used to set the erasure operation when erasing, set the mode conditions of the recording or playback operation when recording or playing, and a setting means is used to set the mode conditions of the recording or playback operation when erasing. Although the mode switching is used to set the settings and switch between continuous recording mode and single recording mode during recording or playback, the present invention is not limited to such a switch, and the present invention is not limited to such a switch. Alternatively, the same application can be made even when the switch is also used as a switch for setting mode conditions for other recording/reproducing operations during reproduction.

In addition, the mode conditions for recording or playback operation are not limited to the above-mentioned continuous recording mode and single recording mode settings, but also other conditions,
For example, the mode conditions for recording include continuous recording speed settings and field recording mode.

The frame recording mode may also be set.

Further, in this embodiment, a still video system is disclosed as an example, but the present invention is of course not limited to this, and can of course be applied to various other recording or reproducing apparatuses as described above.

Further, as the storage means, it goes without saying that in addition to the disk shown in this embodiment, a tape-like device, an optical disk, or a solid-state memory may be used.

〔Effect of the invention〕

According to the present invention, it is possible to provide an erasing device with good operability (simple configuration).

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of an apparatus according to an embodiment of the present invention, and FIG. 3 is an exterior member of an apparatus according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of the optical system section of the apparatus of this embodiment, FIG. 5 is an external view of the apparatus of this embodiment as seen from the rear, a flowchart explaining the operation of the apparatus, FIG. 10 is a diagram showing a display example of the display section 12 shown in FIG. 1.

Claims (1)

[Claims] An erasing device having at least one of recording and playback functions and an erasing function, which sets the erasing operation when erasing and sets the mode conditions of the recording or playback operation when recording or playing back. An erasing device characterized by having means.