JPH0792883B2 - Playback device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a recording or reproducing apparatus, and more particularly to a recording or reproducing apparatus which can be used by connecting an external device such as an accessory or an adapter which consumes power. Is.

<Prior Art> The image pickup device can be used alone for shooting, but can also be provided with a playback function by connecting an adapter or an accessory, and can also be used for lighting or other remote control.

<Problems to be solved by the invention> In that case, adapters and accessories consume some amount of power, but when they are supplied from the power supply of the imaging device without having a battery, the timing of power supply Is a problem. That is, if power is always supplied, the battery will be exhausted immediately, the connector will be corroded, and the service life of the electrical parts used for the adapter and the accessory will be unfavorable.

Also, some of the above issues remain even if the adapter or accessory has a power source.

The present invention has been made in view of the above points, and prevents the above-mentioned problems from occurring by prohibiting the power supply to an external device such as an accessory or an adapter while the imaging device is operating at a predetermined timing. Is what you are trying to do.

<Means for Solving the Problems> The present invention relates to a recording or reproducing apparatus having a built-in power source capable of connecting and using an external device having an electric circuit, and at least supplying the power to the external device by the recording. It has a control means for prohibiting the completion of the head initialization operation for the medium.

<Operation> In the present invention, since power is not supplied to the external device until the initialization of the head for the recording medium is completed by the control means, the power supply is not abnormally lowered or unnecessarily consumed during the initialization.

〔Example〕

Next, an embodiment of the recording / reproducing apparatus, particularly an electric circuit system will be described with reference to FIG. The figure shows an example of a circuit system when the present invention is applied to a still video recording apparatus.

In the figure, 81 is a camera section having a well-known configuration for forming a video signal, 82 is a recording circuit for recording the video signal output from the camera section 81 on the disk 2 through the head 5, and 83 is the recording circuit. A recording control circuit for controlling the recording circuit 82 to record a video signal for one field or one frame, and 84 is a periodic signal generating circuit for generating horizontal and vertical periodic signals HS and VS. , Its output is given to a camera unit 81, a recording circuit 82, a recording control circuit 83 and a disk / motor control circuit 89 described later. The recording control circuit
83 outputs a recording end signal RE when the recording by the head 5 is completed.

85 is the recording at each recording position on the disk 2, that is,
A recording presence / absence detection circuit constituting a search means for detecting the presence or absence of a video signal through the head 5, and 86 indicates the head 5 with respect to the output of the recording circuit 82 (terminal R side) and the input of the detection circuit 85 (terminal C side). It is a switching switch for switching. Reference numeral 107 denotes a SW that switches between the case of supplying a recording signal to the recording / reproducing head 5 and the case of supplying a reproducing signal from the head 5 to the reproducing circuit 108 via a terminal 110. The output of the reproduction circuit 108 is obtained from the terminal 109 in the form of a television signal. The reproduction circuit and terminals 109 and 110 are included in the reproduction adapter PE as an external device, and the reproduction adapter PE is attachable to and detachable from the image pickup apparatus. The power supply to the circuit 108 in the reproduction adapter is controlled by the control circuit 108.

87 is a step motor drive circuit for driving the head moving step motor 49, 88 is a disk rotation motor for rotating the disk 2 through the spindle 6, and 89 is a disk motor control circuit controlled by the motor 88. Then, here, the reference speed signal from the internal reference oscillator, the rotation speed signal FG from the motor 88, the vertical cycle signal VS from the cycle signal generation circuit 84, and the center
Based on the disk rotation transfer signal PG from the disk rotation phase detector 90 that detects the magnetic pin 3e embedded in the core 3, the disk 2 is set to a predetermined speed (NTSC system) corresponding to the field or frame frequency of the television. Then, the motor 88 is controlled so as to rotate at 3.600 to 1.800 rpm and at a predetermined phase with respect to the timing of the vertical cycle signal VS. It should be noted that the control circuit 89 starts the servo control when the motor 88 starts to rotate at the specified speed and the specified phase.
The lock-in signal SL is output.

120 is a cassette eject switch, 121 is a recording prevention (not shown) provided on the cassette, and a recording prevention claw detection switch detects a claw, 122 is an ON-track detection circuit, and whether the head 5 accurately traces each track. It is to detect whether or not. 123 is the power switch of the circuit 122, 124 is ON
This is a high-level ON-track signal that is output when a track (that is, a state in which the head is tracing the track accurately) is entered.

Reference numeral 91 is the first and second recording trigger switches 95 and 106, which will be described later, 106 cassette presence / absence detection switch 69, cassette attachment / detachment detection switch 7
0, outer cover / lock completion detection switch 74, carrier position detectors 58 and 59, cassette take-out switch 120, recording prevention claw detection switch 121, ON-track detection circuit 12
2, ON-track detection circuit power switch 123, ON-track signal 124, recording end signal RE from the recording control circuit 83, servo lock signal SL from the motor control circuit 89, and power-on signal PO obtained when the power is turned on. 1 is a system and controller for controlling the entire circuit system of FIG.

Reference numeral 92 is an indicator including a light emitting or sounding element, 93 is a power supply circuit including a battery, 93 'is a back-up (auxiliary) power supply circuit including a capacitor, 94 is a power switch, 95 is a first recording trigger switch, and 106 is a second recording trigger switch. The recording trigger switch 96 is a trigger button. Here, the first recording trigger switch SW95 is pushed down to the first stage, and the second recording trigger switch 106 is pushed down to the second stage. It is configured to be turned on respectively.

Further, the recording presence / absence detection circuit 85 is configured to detect the presence / absence of an RF (radial frequency) signal when the recording signal is an FM signal, and outputs a high signal when there is recording.

Further, the back-up power supply circuit 93 'charges power to its capacitor by being fed from the power supply circuit 93 when the power switch 94 is turned on, and in response to the switch 94 being turned off, this charged power is supplied to a required circuit (for example, at least It is supplied to the controller 91 and a latch circuit 100) which will be described later, and has a capability of several tens of minutes to several hours.

Reference numeral 99 is a counter that counts the drive pulses from the step motor drive circuit 87, and the control signal from the controller 91 drives the step motor 49 in the forward rotation direction (the X direction of the carrier 46 that supports the head) to count up or reverse. Direction (the direction opposite to the X direction of the carrier 46) is counted down, and is cleared by turning off the carrier position detector 58 for detecting the 0th track, while detecting the 51st track. When the carrier position detector 59 is turned off, the output ("51") of the preset data generating circuit 98 is preset.

100 is counter 9 by load command from controller 91
A latch circuit that latches the inside of 9 constitutes a means for electrically storing the search result of the presence or absence of recording, and power is also supplied from the backup power supply circuit 93 '. 101
Is a comparison circuit for comparing the content A of the latch 100 with the content B of the counter 99, and its A = B output (a high level is output when A = B) is given to the controller 91.

Further, the system controller 91 also controls the power supply SW94 by software, as described in FIG. 2 and subsequent figures.

Reference numeral 105 denotes a recording / playback mode setting switch installed in the camera body. For example, when the switch is ON, the recording mode is set, and when it is OFF, the playback mode is set.

Reference numeral 110 denotes a remote control device for controlling recording / playback of the camera from outside the camera via the system controller 91, and the mode setting by this is performed prior to the setting of the switch 105.

Details of the remote control device 110 will be described. When the remote control operation switch 104 is turned on, the AND circuit 102 is opened,
The output of the recording / playback mode selection switch 103 is the AND circuit 102.
Is supplied to the system controller 91 via. This ON
・ The mode setting by turning off has priority over the mode setting by the switch 105, and controls the mode on the main body side.

The cassette presence / absence detection switch 69 is turned on when the cassette is loaded at a position where recording / playback is possible, and otherwise.
Switch that is OFF, switch that detects outer cover lock completion, 74 is OFF when a cover (not shown, which is normally closed when the cassette is exchanged) is open, and switch that is ON when the cover is closed, and the cassette attachment / detachment detection switch is a cassette Is OFF if it is not loaded at a position where recording / playback is possible, even if it is loaded at the above position, it will be OFF if a predetermined initial setting operation (for example, detection operation of a recorded track) is performed.
By combining with the ON / OFF state with the switches 69 and 74,
It is configured to be able to mechanically store whether or not the cassette has been replaced after the initial setting. That is, when the switch 70 is ON when the power is turned on and the cover is closed, it means that the switch 70 has been replaced while the power is turned off. Similarly, when the cover is closed, the switch 69 is ON and the switch 70 is OFF. Indicates that it has not been replaced while the power was off.
If the switch 69 is OFF and the switch 70 is OFF with the cover closed, it means that the cassette is not loaded.

Reference numerals 58 and 59 are detectors for detecting that the head 5 has deviated from a predetermined recording area on the disk 2 on the outer peripheral side and the center side of the disk 2, respectively, and are well-known photo couplers, respectively. It is provided so as to detect the light shielding plate attached to the carrier 46. That is, in the following description, it is assumed that 50 recording tracks can be set in the above-mentioned predetermined recording area on the disk 2 with a predetermined track pitch (for example, 100 μm) from the outer peripheral side of the disk 2. Each track shall be numbered 1-50 toward the side. In this case, the detector 58 moves the head 5 to the outer circumference of the disk by one track pitch more than the first track position (at this time, the position of the head 5 is changed to the 0th track position).
The light shielding plate is detected at the track position). Further, the detector 59 shields the light at the time when the head 5 is moved to the center side of the disk further by one track pitch than the 50th track position (the position of the head 5 at this time is called the 51st track position). Each is arranged so as to detect the plate.

The system controller 91 includes a micro computer and the like as a main constituent element and is supplied with power from the backup power supply circuit 93 '.
The operation of the embodiment will be described below with reference to the operation flow chart of FIG.

In the above configuration, first, the operator turns on the power switch 94 and presses down the button 96 to the first step to perform a preparatory operation for recording when the first recording trigger SW95 is turned on. This will be described with reference to FIG.

When the power is turned on (step S01), the system controller 91 checks whether the outer cover lock completion detection switch 74 is turned on (step S02). If not turned on, the system controller 91 turns on. stand by. On the other hand, if it is on, the controller 91 continuously checks whether or not the cassette loading / unloading detection switch 70 is on (step S03). If it is on, the cassette 1 is exchanged (dismounted).
Therefore, the automatic positioning operation of the head 5 to the unrecorded position on the disk 2 described below is performed.

That is, if the head 5 is moved while the disk 2 is stopped, the recording surface of the disk 2 will be damaged.
91 instructs the disk / motor control circuit 89 to operate the motor 88. As a result, the motor 88 is rotated (step S04), and then the step motor drive circuit 87 is instructed to continuously rotate the step motor 49 in the forward direction so that the motor 49 is continuously rotated in the forward direction (step S04). S05).
This causes the head 5 to move toward the center of the disk 2, that is, the first head.
It can be moved continuously in the direction of the arrow X in the figure.
During this time, the controller 91 causes the head 5 to move to the aforementioned 51st position.
Carrier position detector 59 by reaching the track position
Repeatedly check whether or not is turned off (step S0
6) When it is turned off, once the motor 49 is commanded to stop (step S07).

Here, when the carrier position detector 59 is turned off, the system controller 91 checks whether the contents of the counter 99, that is, the track No. on the software is "51" (step S07 '). "51"
If not, go back to step02 and perform initialization again. If the normal state is not obtained even if this is repeated a plurality of times, a warning of failure may be issued. Since this is done, even if the head position information created from the head shift signal does not match the actual head position due to noise or the like, there is no problem of recording the signal in the wrong track.

If the counter 99 is 51, the controller 91 connects the switching switch 86 to the terminal c side (step S08), and in this state the output of the recording presence / absence detection circuit is checked (step S0).
9) If it is not high, the latch circuit 100 first latches the output of the counter 99 (step S10), and then commands the stepping motor 49 to reverse one step (step S11). Thereafter, this operation is such that the output of the detection circuit 85 becomes high or the head 5 reaches the 0th track position and the carrier detector 58 is turned off (step S12).
Until it is repeated.

The recording presence / absence detection circuit 85 detects the presence / absence of a recording signal on the disk 2 based on the signal picked up by the head 5, and outputs a high signal if there is, and a low signal if there is no recording signal. Output a signal. At this time, the counter 99 counts down by one each time the step motor 49 reverses one step.

Now, in the above-mentioned operations, step S09
If the output of the detection circuit 85 goes high at
The controller 91 commands the continuous reverse rotation of the motor 49 (step S13), and at the same time checks whether the carrier position detector 58 is turned off (step S14), and commands the motor 49 to stop when it is turned off. Yes (Step S1
Five). This sets head 5 to the 0th track position, at which time counter 99 is cleared and its contents are "0".
become. On the other hand, at this time, the latch circuit 100 has a disk 2
That is, the data of the number of the track next to the last recorded track (unrecorded) when viewed from the outer peripheral side, that is, the 0th track side is left.

After stopping the motor 49 in step S15,
1 means to move to the next step S16 and instruct the reverse rotation of several motor pitches (hereinafter, TP) of the motor 49. However, if the detector 58 is turned off at the previous step S12, Shifts to step S16 without passing through steps S13 to S15. In this case, the content of the latch circuit 100 is "1". Of course, also in this case, the counter 99 is cleared and its content is "0". If the 50th track has already been recorded, the steps S09 → S10 → S1
At the time when one cycle of 1 → S12 → S09 is completed, the process proceeds to step S13, so that the content of the latch 100 at this time becomes “51”. The content of the latch 100 indicates the position of the track inside one of the last recorded tracks.

By the way, in step S16, the controller 91 uses the head 5
Motor to move a few more TP in the direction opposite to arrow X
The drive circuit 87 is instructed to reverse the step of 49.

Now, the controller 91 reverses the step motor 49 for several TPs, and then commands the continuous forward rotation of the motor 49 to move the head 5 in the direction of the arrow X (step S1).
7) Then, during this period, the A = B output of the comparison circuit 101 is checked (step S18). Where the step motor 49
By the normal rotation of the counter 99, the counter 99 counts up one by one from the content "0", and the content always indicates the position of the head 5 on the disk 2, that is, the track signal, and the comparison circuit 101 Causes the A = B output to go high when the opposite track number of head 5 matches the contents of latch circuit 100. Accordingly, when the A = B output of the comparison circuit 101 goes high in step S18, the controller 91 commands the stop of the motor 49 in response to this (step S19), whereby the head 5 is held by the latch circuit 100. It means that the track is positioned at the existing track position, that is, the track (unrecorded) next to the last recorded track when viewed from the 0th track.

Next, the controller 91 issues a command to stop the disk motor 88 (step S20), and then checks whether the carrier position detector 59 is off (step S2).
1) If it is not off, display the display 92 to show that recording is possible (or to indicate that the preparation for recording is complete), display it (step S22), and if it is off, display the display 92. Recording of the 50th track on disk 2 is over (disk end)
A message indicating that it is being displayed is displayed (step 23), and recording is prohibited (step S24).

On the other hand, in the previous step S03, if the cassette loading / unloading detection switch 70 is not turned on, it means that the cassette 1 has not been replaced (loaded / unloaded) or the cassette 1 has not been loaded. The controller 91 further checks whether or not the cassette presence / absence detection switch 69 is turned on (step S25), that is, the cassette 1 is turned on.
If is loaded, the process proceeds to the previous step S21. On the other hand, if the detection switch 69 is not turned on, this means that the cassette 1 is not loaded (no cassette).
Displays the message on the display 92 (step 26), and prohibits recording (step S22).

In this embodiment, the preparation operation for recording is performed as described above.

Next, the flow chart of the operation of the second embodiment of the present invention will be described with reference to FIGS.

When the power switch 94 is turned on (step S25), the battery check is performed at the first threshold (step S25).
S26), if the battery is low, a warning is issued to urge replacement of the battery (step S27). Next, the battery check is performed again at a level lower than the first threshold (step S28). This is a judgment as to whether or not the minimum battery is necessary for shooting. If it is a low battery at step S28, the power switch 94 is turned off (step S29) and a new battery is waited for. If the battery level is satisfied in steps S26 and S28, the presence / absence of a mode interrupt from the outside of the camera by the remote controller is preferentially detected (step S30), and if there is an interrupt, the mode is determined (step S31). ).
As a result of the mode discrimination, the recording mode shifts to the step described later, and the reproduction mode shifts to the step.

On the other hand, if there is no mode interrupt, the state of the mode switch 105 of the camera body is checked (step S32). In this case as well, the process shifts to the recording mode and the reproducing mode, respectively.

Next, the recording mode will be described with reference to FIG. First, in step S33, the disk motor rotation start condition check is performed.

That is, if any one of the following conditions applies, the motor prohibits starting.

Condition 1: When the cassette presence / absence detection switch 69 is checked, and as a result, the cassette is not present Condition 2: The outer cover lock completion detection switch 74 is checked, and as a result, the lock is not completed Condition 3: When the cassette is removed When the cassette eject switch 120 is checked and the result is that the cassette eject operation is in progress.Condition 4: In recording mode, when the recording prevention claw detection switch is checked, and as a result it is determined that it is a recording prevention cassette Condition 5: Recording mode When the count value of the number of recorded sheets stored in the electric storage means has reached a predetermined number, Condition 6: In the recording mode, the carrier position detector 59 is checked and the head is located at the innermost circumference. When it is known that all the disks that have been manipulated can be regarded as recorded under these conditions When conditions 1 to 6 above are not met Step S33
Proceed to step (3) to rotate the disk motor and make it recordable. Next, in step S35, it is checked whether or not the mode state up to the previous time is the reproduction mode. If it is the reproduction mode, the process proceeds to step S37, and if it is the REC mode, the process proceeds to step S36. If the reproduction mode has been set up to the last time, it is stored in the memory 100 (not shown) in the latch 100 or the controller 91 by the initialization (the same operation as the recording preparation operation described in FIG. 2) which will be performed during that time. In order to solve such a problem, it is possible that the track number that was generated may have an error from the actual head position due to frequent track movement during playback.
The judgment of S35 is made. That is, in step S35, continue
If it is in REC mode, the latch 100 in step S36 described later.
Alternatively, if the checksum for the memory M is judged and the memory contents are judged to be correct, the recording operation after step S47 is started. In step S37, the initialization flag IF is set in the memory (not shown) backed up by the back-up power supply so that the power may be turned off during the initialization. Then, the operation of resetting the flag IF is performed (step S39).

The checksum in step S36 is the memory M or the latch 100 that is backed up by the back-up power source.
In addition to storing the track number in, and writing the checksum data such as 4bit (0101) or (1010) together with this data when the power is turned off, if the memory or the latch operation is abnormal, In most cases, these checksum bits will be 1111 or 0000, so S36 (0101), (1010) for this checksum bit
It is possible to judge whether or not the data written in the same memory is correct by performing a check that if all 0s are obtained by EX-OR with codes such as, and otherwise, it is abnormal. It is a thing. Therefore, when noise is mixed in the electric circuit and the track position signal is abnormal, there is no problem that another signal is erroneously recorded on the already recorded track.

If the checksum is OK in step S36, power is turned on to the ON track detection circuit (step S47). This ON-track detection circuit is for detecting whether or not the head is located at a predetermined position on the disk. Then contact the head with the seat (step S4
8) The output of the ON track detection circuit is checked to determine whether it is an ON track or not (step S49).

If it is not an ON track here, move to step S37 and redo recording initialization. If ON-track, go to step 40. In step S40, the state of the release SW1 is detected again, and if it is ON, the process proceeds to step S41, and if it is OFF, the process returns to (step S25) and the above operation is repeated again.

If it is not in the REC mode in step S41, the process returns to A, and if it is in the REC mode, it is judged in step S42 whether the second release SW2 is ON or not, and steps S40 to S42 are executed until it is turned ON.
Repeat. If it is turned on, the recording operation is performed in step S43, the ON track detection circuit 122 is powered on in step S44, and one track head is fed (S45), the track NO of the memory is changed (S46), and the process returns to step S49. .

Next, the reproduction mode will be described with reference to FIG. Check the disk motor rotation start condition as in REC mode (S4
7) The disk motor is rotationally driven (S48), and then it is judged whether or not the recording mode is the previous one (S49). If the recording mode is the previous one, the process proceeds to step S50 and thereafter, otherwise the process proceeds to step S53. . At step S50, it is judged whether or not the current track number is 0, and if so, reproduction is not possible, and the initialization operation similar to steps S37 to S39 in FIG. 4 is performed at steps S57 to S59. If it is not zero in step S50, the same checksum is determined as in step S51 in FIG. 4 (S51). If OK, the head is accessed one track before and the head is moved to the track recorded immediately before. Therefore, while recording can be performed immediately, the information recorded immediately before can be immediately confirmed during reproduction. Alternatively, since the first reproduced track in the reproduction mode does not become an unrecorded track, the user does not feel uncomfortable.

Next, power is supplied to the reproduction adapter (S53), the reproduction mode is continuously determined (S55), and if it is not the reproduction mode, the reproduction operation is performed (S56). During the reproduction operation, the determination of steps S53 and S54 is always made.

The POWER OFF hurchin in FIGS. 3 to 5 will be described with reference to FIG.

First, the drive output of the seat motor is turned off (step S6
0).

Next, the head is retracted from the seat (step S61), the track number of the latch 100 is further added to the track number of the latch 100 at step S610, and the main power supply is turned off at step S62 to finish.

The method of head withdrawal in step S61 will be described.

In this embodiment, as shown in FIG.
The head is separated from the seat between the first step and the fourth step and between the ninth step and the twelfth step, and the head contacts the seat between the fifth step and the eighth step. A cam is provided to interlock with the feed of the step motor to move the head forward and backward in the disk direction.

Then, the current step is recorded in the memory in the control circuit, and the value is updated by a decimal number every time the step motor is driven. Therefore, when the head is retracted, the step motor may be driven to position the head on the track near the first step.

Next, the initialization routine will be described with reference to FIGS. 9 to 10.

First, the process of initializing the track position will be described. (Steps S68-S77) First, start controlling the disk motor (S68),
Power on the on-track detection circuit (S69). Next, the step motor for head drive is continuously rotated forward (S7
0) The head is driven inwardly until the carrier position detector 59 is turned off between the 51st track and the 52nd track.
(S71) and further N steps (N is an integer from 0 to 12)
The minute stepping motor 49 is rotated in the forward direction to reliably position the head position at the innermost circumference (S72).

Then, after waiting time at step S73 for driving the step motor more stably than usual (about 2 to 3 times the energization time per step of the step motor at step S72), the step motor 49 is reversed to move the head. Drive in the outer peripheral direction (S74). The carrier position detector 59 switches the steps S73 to S74 between the 51st track and the 52nd track.
If it is ON, it is judged whether or not the head position at that time is substantially the center position of the track, that is, the on-track, by checking the level of the on-track signal 124, and if it is not on-track, S78 Then, in S79, as in S73 and S74, the head is surely driven one step in the outer peripheral direction with a waiting time, and the process returns to S76. If it is determined to be on-track in S76, the head position at this time is set as the inner-track on-track position and the track counter is initialized (the 51st track in this embodiment) (S77).

Next, depending on whether the recording mode or the reproduction mode is currently set (S80), the reproduction initialization (S81 to S83),
Recording initialization (S84-). First, reproduction initialization will be described. In the play mode, first, in step S81, the head is moved to the specified track position. Detailed description is omitted here, but the playback track can be specified from the outside using the numeric keypad or up.
-Down key or other means.

Next, a tracking operation (auto tracking finding) is performed using the output of the recording presence / absence detection circuit 85 so that the reproduction signal level becomes optimum on the specified track (S82),
The on-track detection circuit is turned off (S83), and the initialization operation (playback initialization) ends.

Next, recording initialization will be described. Step S8
If the recording (REC) mode is set to 0, the switch 121 first determines whether or not the loaded cassette is a recording-preventing one (S84).
Move to step S93 in the figure. If recording is not prevented, move to S85. In S85, it is determined whether or not the current head position is the recordable innermost track (the 50th track in this embodiment). That is, even if there are 51 tracks as the number of tracks, the 51st may record a signal for a purpose different from other tracks, such as disk control information. Therefore, in such a case, the innermost track that can be recorded is 50
Will be the second. In this way, the head is driven by one track in the outer peripheral direction to the innermost recordable track (here, the 50th track) (S86), and when the recordable track (the 50th track) is reached, the process proceeds to step S87 in FIG.

Steps S87 to S92 are for searching the track position to be recorded, and will be described below.

After the elapse of the waiting time until the head position is stabilized in step S87, the reproduction level of the circuit 85 is detected on the track and it is determined whether or not the track has been recorded (S88). If it is not recorded, it is judged whether the current track position is the first track (S89), and if it is not the first track, 1
Reverse the track step 49, that is, drive in the outer peripheral direction to
Return to.

If the head position is the first track in S89, it is assumed that the currently loaded sheet is unrecorded, and the track to be recorded from now on is stored as the first track (for example, the label name "RECT in the memory M of the controller"). "1" is memorized in "" (S91).

If it has been recorded in step S88, the track number on the inner track of the track number at that time is stored as the track address to be recorded next (memory "REC of controller"
The track counter at that time is incremented and stored in T "). Since the track position to be recorded next is found, the cassette 70 is loaded so that the switch 70 can store the fact that the empty track detection operation is completed next. The step motor 49 is driven in the outer peripheral direction in order to turn off the disconnection detection switch 70. (S93) Therefore, when the track counter is 1 or less or the carrier position detector 58 is turned off (S94), the step motor 49 is stopped (S95). Check whether the cassette attachment / detachment detection switch 70 is turned off (S96), and if it is turned off, the head is put first and the steps S91, S are performed.
Drive to the "RECT" position stored in 92 (S97).

Here, it is confirmed by the on-track signal 124 whether or not the head position is the optimum position on the track (S98). If it is on-track, the power of the on-track detection circuit is turned off (S99).
Then, the initialization operation for recording is completed.

If the switch 70 is not turned off in S96, or if S98
If it is not on track, error processing is performed in S100. This error processing may display a warning or may re-execute the initialization operation. Although not shown in the figure, this error handling may be performed by performing appropriate error handling if there is any trouble during the operation of FIGS. 2 to 10.

In this embodiment, the carrier 70 of the switch 70 has no head.
It is arranged so that it turns off when it is shifted outward from the track.

Although not described with reference to FIGS. 2 to 10 above, in the case of an electronic camera, for example, if the checking state of the seat and the motor is released while the seat motor is rotating, the motor may be mechanically damaged. is there. Therefore, in this embodiment, the check shown in FIG. 8 is performed, and the motor is stopped when the seat separates from the motor.

That is, in step S63, it is checked whether the user is operating the cassette take-out switch 120, and if so, it is expected that the checking of the seat and the motor will be canceled in the process of taking out the cassette next time. Braking the motor and stopping it (step S6
6) After that, the power-off routine described above (Fig. 6)
To finish. If the cassette take-out switch 120 has not been operated at step S63, a check for completion of outer cover locking is performed at step S64. This is a step
This is to prevent a check miss due to a failure of the switch 120 in S63 or a shift in the check timing. If the outer cover lock is not completed here, step S6
If it is completed, go to step S65. Step S65
Is to prevent the check misses up to steps S63 and S64. If the cassette does not exist, the process proceeds to step S66. If the cassette exists, the next process is executed.

These steps S63 to S65 may be executed at regular intervals during motor rotation, or may be executed by interrupting the operation of the switch 120.

In addition, if there is a high possibility that the separation of the seat and the motor can be detected in advance only by the check of step S63 due to the system configuration, or the cassette ejection operation is performed electrically, the motor is detected by detecting the cassette ejection switch. The cassette may be discharged after the cassette is stopped.
The motor brake may be an electric brake or a mechanical brake. Further, the head may be contacted to enhance the braking effect. In this case, the head may be retracted after the motor is stopped.

Further, in the above description, the case in which the head is configured to move with respect to the seat has been described, but the system may be configured to move a pad for contacting the head and the seat. In that case, in the operation sequence, the head retraction contact operation portion in the above description may be used as pad retraction and contact.

Further, in the above-mentioned embodiment and the modified examples, the recording track numbers on the disk 2 are sequentially assigned from the outer peripheral side of the disk toward the center side, but this numbering is reversely performed from the central side of the disk toward the outer peripheral side. However, the operation flow in the figure is slightly changed accordingly.

Further, although the example of the still video recording / recording with the integrated camera unit has been shown above, the camera unit 81 may of course be a separate body, and a battery is also used in the power supply of the recording apparatus. In addition to the format, it may be configured to use a commercial power source.

Further, the device is not limited to the video signal recording device, and may be a device for recording information such as audio signal or data. Also, the recording method is not limited to magnetic recording. Further, the record carrier may be a disc-shaped outer drum-shaped one or a tape-shaped one (such as an 8-track audio recorder).

〔effect〕

According to the present invention, when it is used with an external device, power supply to the external device is prohibited until the head initialization operation for the recording medium is completed, so that it is possible to prevent waste of the power source and prevent corrosion of the connector. Can be done. In addition, the power supply will not be consumed abnormally during the initial setting.

[Brief description of drawings]

FIG. 1 is a block diagram of the present invention, FIG. 2 is a flow chart showing the basic operation of recording initialization, and FIGS. 3 to 10 are flow charts showing the operation of the first embodiment. The figure shows the flow chart for starting the photographing operation, FIG. 4 shows the flow chart for the recording mode, FIG. 5 shows the flow chart for the reproduction mode, FIG. 6 shows the flow chart for the power off, and FIG. 7 shows the operation for FIG. FIG. 8, FIG. 8 is a flow chart showing a motor stop check routine, FIG. 9 is a flow chart for recording initialization, and FIG. 10 is a flow chart for recording operation.

Claims (1)

[Claims] 1. A reproducing apparatus configured to be capable of selectively connecting and using an external apparatus having a reproducing circuit and configured to supply power to the external apparatus from a built-in power source, At the time of starting the reproducing apparatus, the head initializing operation for the recording medium is performed, and the power source is not supplied from the power source to the external device until the head initializing operation is completed. A playback device having a system controller which starts power supply from the power supply to the external device.