JPS60164969A - Recording or reproducing device - Google Patents

Abstract

PURPOSE:To simplify constitution of display section of the device by enabling to select the moving speed of a head among plural speeds and enabling to select optionally the recording or reproducing positions on a recording medium. CONSTITUTION:An up switch 22 and a down switch 23 for changing the recorded position and the reproduced position on a magnetic disk 1 are provided in a front panel 17. The signal is inputted to a control circuit 13 through an input circuit 14. In this constitution, a memory 15, a decoder/driver 16 and an indicator 18 indicate the selected moving speed of a head in head moving speed selection mode, and in other cases, constitutes an indicating device to indicate the track number that implies the position of a head 6 on the disk 1, that is, the recorded or reproduced position.

Description

Detailed Description of the Invention [Technical Field] The present invention relates to a recording or reproducing device, and particularly to a recording or reproducing device that is movable with respect to a recording medium in order to record signals at different positions on the recording medium or to reproduce signals at different positions on the recording medium. The present invention relates to a recording or reproducing device equipped with a recording or reproducing head.

[Prior art]

The above-mentioned recording or reproducing apparatus uses, for example, a magnetic disk or a magnetic drum as a recording medium, and uses a movable magnetic head to form circular tracks at different positions and record data for one field. Alternatively, a still image recording or reproducing apparatus that records or reproduces a video signal for one frame is already known.

However, in a weighing device such as this, it is extremely beneficial to provide a plurality of moving speeds of the head relative to the recording medium and to be able to arbitrarily select one of them in terms of expanding its functionality.

On the other hand, it is also useful to arbitrarily set the recording position or reproduction position on the recording medium.

For example, if the above-mentioned two functions are provided, it is also possible to display the selected head movement speed and recording position or playback position in this type of device. Useful.

In this case, providing a dedicated display means for each will lead to an increase in cost, which is not very desirable. Furthermore, for example, arranging dedicated display means for each type of display on one display panel leads to an increase in the size of the entire display panel, and also tends to cause confusion in displayed information.

〔the purpose〕

In view of the above-mentioned circumstances, the present invention provides a recording or reproducing apparatus as described at the beginning, in which the moving speed of the head can be selected from among a plurality of speeds, and the recording or reproducing position on the recording medium can be arbitrarily set. In the case where the configuration of the display part of the device can be simplified, the device can be made small-scale, the device can be made inexpensive, and the possibility of confusion of displayed information can be reduced. The purpose is to provide a playback device.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of an embodiment of a recording or reproducing apparatus according to the present invention, and shows an example in which the apparatus is applied to a still image recording/reproducing apparatus using a magnetic disk as a recording medium.

In the figure, 1 is a magnetic disk as a recording medium, 2 is a motor that rotates this at a speed corresponding to the field frequency of the video signal, and 4 is a motor that performs recording operations such as modulating the video signal input from the video signal input terminal 3. 5 is a recording amplifier that amplifies the output signal from the processing circuit 4; 6 is a magnetic head for recording and reproducing; 1 is a reproduction amplifier that amplifies the signal picked up by the magnetic head 6; 8 is a recording amplifier that amplifies the output signal from the processing circuit 4; a reproduction processing circuit that processes the output of the reproduction amplifier for reproduction, such as distortion, 9 an output terminal for a reproduction video signal; 1;
0 is a switching circuit for selectively connecting the coil of the head 6 to the output of the recording amplifier 5 and the output of the reproduction amplifier 1; 11 is a head moving mechanism for moving the head 6 in the radial direction of the disk 1; A synchronization signal separation circuit separates a vertical synchronization signal from the video signal input to the input terminal 3; 14 is an input circuit that inputs signals from various operation switches to be described later to the control circuit 13; 15 is a control circuit 1
A memory 16 stores data related to the head movement speed and data related to the position of the head 6 on the disk 1, that is, track number data from 3; 16 converts the output data of the memory 15 into display data; This is a decoder/driver that drives the 1γ is the front panel of the device, 18ij is a two-digit 7-segment LE1) display installed on the front panel 17 as a display means, and is driven by the decoder/driver 16 so that the magnetic head 6 comes into contact with it. The track number on the magnetic disk 1 and the head movement speed are selectively displayed. Reference numeral 19 denotes a recording switch provided on the front panel 1T, and its signal is input to the control circuit 13 via the input circuit 14. When the switch 19 is turned on, the control circuit 13 receives the signal from the synchronization signal separation circuit 12. Based on the vertical synchronization signal, for example, a switching circuit is connected to the terminal 108 side for one field period synchronized with the vertical synchronization signal, and as a result, one field is transmitted to one track on the magnetic disk 1 that the head 6 is in contact with at that time. video signals are recorded. Reference numeral 20 denotes a playback switch provided on the front panel 1T, the signal of which is input to the control circuit 13 via the input circuit 14, and the control circuit 13
When turned on, the switching circuit 10 is connected to the terminal 10P side, thereby reproducing the recording signal of the track on the magnetic disk 1 that the head 6 is in contact with at that time. Reference numeral 21 denotes a head movement speed selection switch as a selection means for selecting the head movement speed from among a plurality of different speeds, the signal of which is input to the control circuit 13 via the input circuit 14, and the control circuit 13 uses this switch. 21 is off, the recording mode or playback mode is set depending on whether the record switch 19 or playback switch 200 is on, and when this switch 21 is on, the head movement speed selection mode is set. 22 and 23 indicate the position of the head 6 on the disk 1 in the direction in which the track number increases (indicated by U in the figure toward the center of the magnetic disk 1) and in the direction in which the track number decreases (indicated by D in the figure on the disk 1). direction). That is, an up switch 22 and a down switch 23 are provided on the front panel 17 for switching the recording position and the reproduction position on the magnetic disk 1, and their signals are input to the control circuit 13 via the input circuit 14. Ru. In the above configuration, the memory 15. The decoder/driver 16 and the display 18 display the head movement speed, the selected head movement speed in the selection mode, and the position of the head 6 on the disk 1, that is, the position of the recording target in other cases. This constitutes a display means for displaying a track number indicating a position or a position to be reproduced.

Also, among the switches 19 to 23, the playback switch 20
has a self-holding configuration in which it is turned on by the first suppression operation and turned off by the second suppression operation, and the remaining switches 19, 21, 22 and 23 remain on as long as they are pressed. It has various configurations.

Next, the operation will be explained based on the flowcharts shown in FIGS. 2 to 4.

First, setting of the head movement speed will be explained based on the flowchart shown in FIG.

First, there are two modes of movement of the magnetic head 6, a single mode and a continuous mode, and the braking operation of the movement of the magnetic head 6 differs depending on these modes. Here, the single mode means that in the recording mode, one field's worth of recording is performed each time the recording switch 190 is turned on, and each time the recording is completed, the head 6 is moved to the position for the next recording. In addition, in the playback mode, each time the up switch 22 and down switch 23 are operated, the direction specified by each (U and D in the figure)
This is a mode in which the magnetic head 6 is moved one track pitch at a time in the direction).

Continuous mode means that in the recording mode, as long as the recording switch 19 is kept on, recording for each field is repeated at a predetermined speed at different positions on the disk 1, and each recording ends. Each time, the magnetic head 6 is moved to the next recording position, and in the playback mode, as long as the up switch 22 or the down switch 23 is kept on, the magnetic head 6 is moved at a predetermined speed in the direction specified by each. In this mode, the head 6 is moved and each recording track is reproduced for a predetermined period of time. In this embodiment, there are three continuous modes, each with a head movement speed of, for example, 5) rack/see.

10 tracks/SeC work 15) Rack/formula is set.

Next, a speed selection method in the head movement speed selection mode will be explained based on the flowchart of FIG. 2.

When the head movement speed selection switch 21 is turned on (5T
EP-1), the control output circuit 13 causes the memory 15 to output the data regarding the head movement speed stored at that time to the control circuit 13 (S T BP-2), and therefore the display 18 shows the head movement speed. The speed is displayed (STEP-
3). The speed displayed at this time is the head movement speed that was set when the head movement speed selection switch 21 was turned on, and the control circuit 13 displays that speed for a certain period of time (STEP-4). If the head movement speed selection switch 21 remains on for a certain period of time (5T
EP-5), the control circuit 13 uses the memory 15 to save %00"
, 105", "10", and 115" are repeatedly output in this order, so that the display 18 shows "0".
0 // , SS Q 5", 110 //, SS 1
5 // numbers are displayed repeatedly in this order (STE
P-6 to 5TEP-9). Here, XX o□//, N
\05 〃1XX10 "Oyohi'15" is single mode and 5 tracks/sec respectively.

It represents a continuous mode of 10 tracks/track or 15 tracks/track.

Note that, instead of the 7-segment LED display 18 that can only display numbers, a display that can display numbers and alphabetic characters (for example, a liquid crystal display, a fluorescent display, etc.) may be used, for example, 81. LO, MI.

Displaying Hl allows the track number and head movement speed to be clearly distinguished, which is extremely effective in avoiding misidentification. In addition, the above SL and LO.

Ml and Okuhi HI represent single mode, slow mode, medium mode 2 and fast mode, respectively. The above XV00 〃1” O'5 "1v"1
0” Is 15 //.

Then, select the desired head movement speed (for example, ゝ o o
//(STEP-6)) is displayed, if you turn off the head movement speed selection switch 21, (STEP-6)) is displayed.
10~5TEP-t3), the head movement speed displayed at that time is stored in the memory 15 (8'L'14
1'-14), and after that speed ('X00//) is displayed for a certain period of time (5TEP-15, 5TEp-i6), the track number that the head 6 is in contact with at that time is displayed again (ST[ P-17° STI; 11'-18).

Next, Figures 3 and 4 show the operation during signal recording and reproduction.
This will be explained based on the flowcharts in Figures (al, fb).

First, a case will be described in which the mode of movement of the head 6 is set to single mode. When recording a signal in single mode, the control circuit 13 switches the recording switch 1
When the switching circuit 9 is turned on (STEP-20), the switching circuit 1 is switched on during the period of the L field synchronized with the vertical synchronizing signal from the synchronizing signal separation circuit 12 immediately after that.
0 is connected to the terminal 10R side (S'rEP-21), whereby one field worth of video signal from the recording amplifier 5 is recorded onto the disk 1 through the head 6. When recording is completed (STEP-22), the switching circuit 10 is disconnected from the terminal 10R (STEP-23).
), the control circuit 13 operates the head moving device [11 to move the head 6 by one track pitch in the direction in which the track number increases (direction indicated by U in the figure) (STEP-2).
4,8TEP-25). At this time, +1 is added to the track in the memory (STEP-26), and the next larger track number is displayed on the display 18 (8'l'BP-27).
), the set value of the head movement speed is input to the control circuit 13 from the memory 15 (STEP-zsL). Here, in the single mode (S, TEP-29), the control circuit 13 Note that even if the recording switch 19 remains on (STEP-33), the operation remains stopped.

On the other hand, when reproducing a signal, the control circuit 13 connects the switching circuit 10 to the terminal 10P side (STEP-40) in response to the regeneration switch 200 being turned on (ST'BP-40).
41) As a result, the signal picked up by the head 6 is reproduced by the reproduction amplifier 11 and the reproduction processing circuit 8, and is output from the output terminal 9. In this signal reproduction mode, the control circuit 13 instructs the head moving mechanism 11 to move the head 6 in a specified direction (STEP-42) every time the up switch 22 or down switch 23 is turned on (STEP-42). (direction U or D in the figure) by one trunk pitch (5TEP-43, 5TEP-44). When the track number is 1, +1 is added to the trunk in the memory, and when the track is down by 1, -1 is added to the track in the memory (5TEP-45), and the track number is one higher or one lower. is displayed on the display 18 (STEP-46), and the set value of the head movement speed is input from the memory 15 to the control circuit 13 (STEP-46).
47).

Next, the operation when the mode of movement of the hendro is set to continuous mode will be explained.

First, to explain the operation when recording a signal, when the recording switch 19 is turned on, the control circuit 13 performs the synchronization 16 as described above.
The switching circuit 10 is controlled based on the vertical synchronization signal from the signal separation circuit 12 to record one field's worth of signals through the magnetic head 6. Immediately after this is completed, the track number is increased at the head movement speed set at that time. The magnetic head 6 is moved by one track pitch in the direction (direction of U in the figure) (STEP-30 to 5TEP-
35) Then, based on the vertical synchronizing signal again, one field worth of signals is recorded at that position. here,
IV=(1/60) This operation continues as long as the recording switch 19 is turned on, and when it is turned off, the operation is stopped. However, if the recording switch 19 is turned off during recording, recording for one field is completed, and then the operation is stopped after the head 6 has been moved to the next recording position.

Furthermore, the operation during signal reproduction is basically the same as that in the single mode, but in this case, the control circuit 13 operates while the up switch 22 or the down switch 23 is turned on. , the currently set head movement speed i [(STEP-49~5TEP
-55), the magnetic head 6 moves in the direction specified by turning on these switches 22 and 23 (direction U or D in the figure).
move. ' FIG. 4 (al, [bl] is a flowchart showing the operation in the above playback mode.

One embodiment of the present invention is as described above. Here, in the above configuration, if the head movement speed selection switch 21 is only turned on, the head movement speed selection mode is set, and the actual speed is not changed. is not selected, and the up switch 22 is pressed while the head movement speed selection switch 21 is turned on.
The control circuit 13 may be configured so that the speed can be selected by turning on the down switch 23.

In this case, when the up switch 22 is turned on, the speed increases to 'v'.
It is convenient if the order changes in the order of ``00〃→Ant 05//→110''→"15", and vice versa when the down switch 23 is turned on.

〔effect〕

As detailed above, according to the present invention, as a recording or reproducing apparatus as described at the beginning, the moving speed of the head can be selected from among a plurality of speeds, and the recording position or the reproducing position on the recording medium can be selected. When making it possible to select arbitrarily,
It is possible to simplify the structure of the display section of the device, make it small-scale, reduce the cost of the device, and reduce the risk of confusion of displayed information, and in this type of recording or reproducing device. Extremely useful.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG.
The figure is an operation flowchart for head movement speed setting, Figure 3 is an operation flowchart in recording mode, and Figure 4 is fa.
1, (b) is an operation flowchart in the reproduction mode, FIG. 4[al is an operation flowchart in the direction in which the track number increases, and FIG. 4fbl is an operation flowchart in the direction in which the trunk number decreases. 1...Magnetic disk 6...Magnetic head 13...Control circuit 18...LED indicator 19... Recording switch 20...Playback switch 21...Head movement speed selection switch 22...
... Up switch 23 ... Down switch

Claims (1)

[Claims] In a recording or reproducing apparatus equipped with a recording or reproducing head that moves with respect to the recording medium in order to record or reproduce signals at different positions on the recording medium, the head a selection means for selecting the speed at which the head is moved relative to the recording medium from among a plurality of different speeds; and display means for displaying the position of the head on the recording medium.