JPH01312769A - Still video camera - Google Patents

Abstract

PURPOSE:To easily record additional information such as voice, etc., after photographing by controlling the shifting of a magnetic head so that a track for recording the additional information may be set adjacent to a track where a still video signal should be recorded when a skip mode is set. CONSTITUTION:The magnetic head 2 for writing the still video signal, etc., of an object whose image is picked up in the specified track of a video floppy 1 is supported to freely move in the diameter direction of the video floppy 1 and controlled to be shifted in said direction by a shifting driving controller. When a set recording mode is the skip mode, a step motor 87 is driven by a driver 86 by referring to a formed track map and the magnetic head 2 is shifted to the track positioned by two tracks from the track finally recorded of a video floppy 1 in a forward direction. Thus, the magnetic head 2 is shifted by two tracks in the forward direction and positioned and an unrecorded vacant track adjacent to the track already recorded in the forward direction is prepared in the video floppy 1.

Description

DETAILED DESCRIPTION OF THE INVENTION Summary of the Invention In a still video camera in which a skip mode can be set, when a skip mode is set,
In order to be able to record additional information such as sound white later, set a track for recording additional information on a track adjacent to the track on which the still video signal is to be recorded, either in the order or in the opposite direction. Then, the magnetic head is transferred.

BACKGROUND OF THE INVENTION This invention relates to still video cameras (electronic still cameras). In this specification, still video,
Cameras include not only those that only take pictures and record, but also still and video cameras that have playback functions.

A still video camera (electronic still camera) has already been put into practical use, which captures an image of him with an electronic imaging device or the like and magnetically records the still video on a video floppy. In such a still video camera, still video signals representing the captured human body image are sequentially recorded on tracks of a magnetic recording medium. therefore.

It has been difficult to record sound, music, and other additional information on a track adjacent to a track on which a certain still image is recorded, and to play it back simultaneously with or in conjunction with the still image. In order to achieve this, it was necessary to use a special magnetic recording bag 1; 5 to edit the still image onto a different magnetic recording medium than the one on which the still image was recorded.

SUMMARY OF THE INVENTION This invention provides a method for recording still/video signals by identifying tracks on which additional information should be recorded during shooting and recording, so that additional information such as sound can be easily recorded after shooting. The purpose of the present invention is to provide a still video camera that can be operated in a skip mode (this operation is called a skip mode).

A still video camera according to this invention.

1 (a head transport device that transports a magnetic head in the radial direction of a rotating magnetic recording medium having several tracks).

Skip mode setting means, and when the skip mode is set, one track adjacent to either one of the racks in which the still video signal is to be recorded is used for recording additional information. Set &Ii
The apparatus is characterized in that it includes means for controlling the head transfer device to transfer the air head.

In the still video camera according to the present invention, at least a skip mode can be set.

When Skip mode is set, Still
One track adjacent to the track on which the video signal is to be recorded is set for recording additional information, and the magnetic head is moved.

The track for recording additional information may be a track adjacent in the forward direction to the track on which the still video signal is to be recorded, or may be a track adjacent in the reverse direction. The track for recording additional information may be left as an unrecorded track without recording anything, or it may be possible to actively record a signal of a specific condolence frequency to clearly indicate that it is for recording additional information. You may also do so. When recording a single frequency fr on a track for recording additional information, it may be recorded over the entire circumference of the track, or may be recorded on a portion of the track at a fixed angular position. When additional information such as voice single character information is later recorded on the additional information recording track, it is easy to erase the signal if it is a single frequency signal.

According to this invention, when the skip mode is set, the track adjacent to the still video signal recording track is set for recording additional information, so that audio, etc., can be added to this additional information recording track later. Information can be easily recorded.

Below, we will discuss in detail the implementation of this invention applied to a still video camera with a playback function, but this invention can also be applied to a still video camera without a playback function.
Needless to say, it is Noh.

Description of Embodiments A mode in which nothing is recorded on the track for additional information, that is, a track for recording additional information is left as an unrecorded track will be described.

FIG. 1 shows the system configuration of a still/video conference camera.

This still video camera has three controllers: system controller 10. It is controlled by the photographing control device 30 and the recording control device 70. These control bags! +&
The IO, 30, and 70 each consist of a CPU (for example, a microprocessor), a memory (RAM, ROM, etc.) that stores its programs and necessary data, and necessary interface circuits. The CPU of the system control device 10 is the main CPU, and controls the overall operation of the still video camera. The CPUs of the photographing control device 30 and the recording control device 70 are sub-CPUs, and operate according to commands from the main CPU. The photographing control device 30 performs control related to photographing, such as focusing, aperture, shutter speed, and zoom. The recording control device 70 controls recording of video signals on the video floppy 1, such as driving the disk motor 3, loading/unloading the magnetic head 2, and transporting the magnetic head 2. These control devices In, 30.70 are interconnected by serial transmission lines; they communicate with each other.

A regenerator (regeneration adapter) 90 can also be connected.

This regenerator 90 demodulates the FM modulated video signal read out from the video floppy 1 and converts it into, for example, an NTS
Converts to C format color video signal and outputs. Regenerator 90 also includes a CPU and memory, and this CPU is positioned as a sub-CPU to the main CPU.

A still video camera is provided with a packet that can be opened and closed. Video floppy 1 is inserted into the opened packet, and when this packet is closed, video floppy 1 is transferred to disk motor 3. Chucked onto the spindle.

The video floppy 1 has a plurality of (for example, 50) tracks (for example, a track pitch of 100) arranged concentrically, and depending on the shooting process, one field or one frame can be recorded on one or two tracks. (one frame worth) of FM-modulated color video signals (including a luminance signal, two color difference signals, etc.) are magnetically recorded. video floppy 1
The 50 tracks arranged concentrically on the magnetic recording surface of are numbered in order from the outer circumferential side to the inner circumferential side.
Tracks Nα from 1 to Nα50 are attached. Home position HP (origin position or Samurai 1a b't
i & ) is outside the No. 1 track, and the end position EP is inside the No. 50 track.

The system control device 10 includes a power switch 16, various mode switches 11 to 14. A packet switch 7 that detects switch input signals such as the shutter release button 15 and the open/closed state of a packet containing a video floppy.
The detection signal of the video floppy detection switch 8, which detects the presence or absence of the video floppy 1, etc., are manually generated. The modes that can be set include frame/field mode, which indicates frame recording or field recording, and normal mode, which records sequentially on each track.

As will be explained in detail later, there is a skip mode in which a track for recording additional information is provided on the video floppy, and an edit mode in which additional information is photographed and recorded in an empty track such as an additional information/recording track. These set modes, the track to be recorded, and other information are displayed on the liquid crystal display 21. This display 21 is connected to the system control device IO by bus. Furthermore, when some abnormal condition occurs, the buzzer 22 sounds an alarm.

The shutter release button 15 is of a two-stage stroke type, in which the first stage of depression releases switch S1, and the second stage of further depression of the button 15 causes switch S2.
are respectively turned on. When switch S1 is turned on, disk motor 3 is driven. After this, switch S2
When turned on, photographing and recording are performed.

The imaging optical system includes a zoom lens system 31. An imaging lens system 32 for forming a subject image. Aperture 33° A beam that deflects a part of the incident light to enter the photometric element 51.
Splitter 34. Optical filter 35 and shutter 36
It consists of The illuminance detection signal of the photometric element 51 is input to the photographing control device 30 via the logarithmic amplifier 52. The photographing control device 30 calculates the aperture value and shutter speed based on the incident light illuminance detected by the photometric element 51, controls the aperture 33 based on the determined aperture value, and shutters 3B based on the similarly determined shutter speed.
Opening/closing control is performed. The driver 4 opens and closes the diaphragm 33.
This is done by a throttling motor 48 driven by 7. A switch 49 for detecting the opening and closing limit positions of the diaphragm 33 is also provided. Unlatching and winding of the leading and trailing curtains of the shutter 3G are performed by a shutter drive device including a shutter motor 54 driven by a driver 53. The rotation angle of the motor 54 is detected by a rotary encoder 55 and fed back to the device 30.

The color detection signal from the color sensor 61 is subjected to predetermined processing in a white balance processing circuit 62 and then input to the device 30 manually. This white balance data is applied to the R in the variable gain amplification circuit described later in the signal processing circuit 71.
, G, and B signals for amplification gain control.

In order to measure the distance to the subject, two infrared light emitting diodes 63 and a light receiving element G4 that receives the reflected light are provided, and based on the output signal of the light receiving element 64, a focusing processing circuit 65 indicates the distance to the subject. Data is obtained. Using this data, an auto φ focus motor 46 is driven via a driver 45 under the control of the device 30 to perform focusing control.

Additionally, a tele to enter the degree of zoom.

In response to signals from wide switches 38 and 39, control device 30 drives zoom motor 42 via driver 41 to set a predetermined magnification.

The rotation angle of the motor 42 is detected by a rotary encoder 43 and fed back to the device 30.

At the focal plane of the imaging optical system, an integrated electronic imaging device 37 for the three primary colors is arranged, for example, a two-dimensional imaging cell array such as a CCD.

The image data accumulated in the imaging device 3γ when the shutter 36 is opened is read out as a serial still video signal (R, G, B) in synchronization with vertical and horizontal synchronizing signals given from the signal processing circuit 71. Then, the signal processing circuit 71 is manually operated.

The signal processing circuit 71 includes an oscillation circuit, and generates and outputs a vertical reference signal VD and a reference clock signal from the output signal of the oscillation circuit. The vertical reference signal VD is supplied to the system controller 10. It is given to the photographing control device 30 and the recording control device 70, and serves as a reference for the operation timing in these devices. The reference clock signal is provided to the servo control circuit 80. As will be described later, the phase pulse PG representing the reference phase of rotation of the video floppy 1 is transmitted to the signal processing circuit 71.
The system system &11 device 1 (1) is installed in the recording control device 70 and the reproducing device 90. By the reset f,:, given from the recording control device 70, the vertical reference signal VD is changed to the phase pulse PC in the signal processing circuit 71. The signal processing circuit 71 is adjusted to maintain a constant phase relationship with the signal processing circuit 71
also generates vertical and horizontal synchronization signals having a constant phase relationship with the phase pulse PG.

The signal processing circuit 71 further includes a preamplification circuit and a variable gain amplification circuit (
white balance adjustment circuit) and process matrix circuit. In the process matrix circuit, the luminance signal Y and the two (!!, difference signals RY, B
-Y is created. These color difference signals R-Y and B-Y are then line-sequentialized for each IH in a line-sequentialization circuit 72. The luminance signal Y and the line-sequential color difference signal pass through a pre-emphasis circuit (the path shown), are FM modulated in different frequency bands in FM modulation circuits 73 and 74, and are combined in a nine combination circuit 75.

Furthermore, data multiplex recording is also possible on video floppies. This multi-recorded data includes initial bits, field/frame data, track addresses (NQ
, ) data, date data, and user usage data. These data are given from the system controller IO, and the signal processing circuit 71 processes them as D P S K (D
rrrarentiaI PhaseShirt Ke
ying) and is synthesized with the above-mentioned FM modulated video signal in a synthesis circuit 76 and sent to a recording amplification circuit 77.

A magnetic head 2 (
In order to enable frame recording, the floppy disks (two of which are provided at intervals so that they are located on adjacent tracks) are supported so as to be movable in the radial direction of the video floppy disk 1 by their transport drive control device, and are arranged in the same direction. The transfer is controlled by This transfer drive control device includes a step motor 87 and its driver 8G. The recording control device 70 gives instructions regarding the direction and amount of movement of the magnetic head 2 to the transfer drive control device. A home position switch 6 that detects that the magnetic head 2 has reached the home position HP
A detection signal from this switch 6 is provided to a recording control device 70. Transferring the magnetic disk 2 from the outer circumferential side to the inner circumferential side of the video floppy is called forward transfer, and transferring it in the opposite direction is called reverse transfer.

A head loading device is provided to prevent marks from being formed on the floppy disk due to the magnetic head 2 coming into contact with the stopped video floppy disk 1 for a long period of time. This device is a head load solenoid 85
and its driver g4, the recording side &Ill device 70
Under the control of the other controllers, the magnetic head 2 contacts the video floppy 1 only during recording or playback (when the video floppy 1 is rotating) or only while the power is on. At times, the magnetic head 2 is moved (advance or retreat) away from the floppy disk 1.

In order to improve the contact between the magnetic head 2 and the rotating video floppy 1, a regulating plate (path shown) is provided on the opposite side of the magnetic head 2 with the video floppy 1 in between. In addition, the core of Video Floppy 1 includes:
Detect leakage magnetic flux of permanent magnet for chucking and record video
A phase detector 5 that outputs a phase detection signal when the floppy disk 1 reaches a predetermined angular position is nearby. The output detection signal of the phase detector 5 is waveform-shaped by a phase pulse generation circuit (waveform shaping circuit) 82 and outputted as a phase pulse PC. circuit 71
and the recording gate circuit 78 is manually operated. phase pulse pc
will be generated once per rotation of the video floppy disk.

The disk motor 3 is driven by its driver 81. The rotational speed of the disk motor 3 is detected by a frequency generator 4 and output from this frequency generator 4.

A detection signal with a frequency proportional to the rotational speed of the motor 3 is manually input to the servo control circuit 80. The servo control circuit 80 controls the motor 3 based on the base clock signal input from the signal processing circuit 71 and the frequency detection signal input from the detection S4.
is controlled to rotate at a constant speed (for example, 3.80 Or, I), m,). Also the servo control circuit 80. The motor 3 is started and stopped in accordance with commands from the recording control device 70.

The still/video signal etc. amplified by the recording amplifier circuit 77 is input to a recording gate circuit 78 . and recording control device 7
When a recording command is given from 0, this gate circuit 78
．． opens its gate at the timing of the input phase pulse PG until the next pulse is input. As a result, video signals etc. are given to the magnetic head 2, and the still
Video signals and the like are recorded on predetermined tracks of the video◆floppy disk 1. This recording is on video floppy 1
This is done only during one revolution. This is the case for field recording. Gate circuit 7 in case of frame recording
8 opens its gate for two rotations of the video floppy 1, and in the first rotation of the video floppy 1, the video signal of the first field is transferred to a certain track by one helad 2, and the video signal of the first field is transferred to a track of the second rotation. In the second rotation, the video signal of the second field is recorded by the other head 2 on the tracks adjacent to the above track in the forward direction.

It is also possible to reproduce video signals etc. from the video floppy disk 1 using the magnetic head 2. The FM modulated video signal 2 etc. read from the magnetic head 2 is similarly sent to the gate circuit 78.
The signal is then amplified by an amplifier circuit 77 and provided to an envelope detection circuit 83 and a regenerator 90. This reproduction is used for track search processing not only in the reproduction mode but also in the recording mode.

The envelope detection circuit 83 is a detection circuit that detects the envelope of the read signal of the magnetic head 2, that is, the FM modulated video signal recorded on the track of the video floppy 1, and outputs a voltage signal corresponding to the envelope. It includes an A/D (analog/digital) conversion circuit. The voltage signal representing the envelope is converted into a digital quantity by an A/D conversion circuit, and is converted into an 8-bit digital signal representing, for example, 256 sonification levels, and is input to the recorder 1j controller 70.

The envelope detection signal is used by the recording control device 70 to determine whether a track on the video floppy 1 is unrecorded or recorded (track search processing). If the level of the detected signal does not reach a predetermined threshold level when the magnetic head 2 is moved across a track, that track is unrecorded, and if it has reached the threshold level, then The track has already been recorded. Track search process when a new video floppy is loaded.

This process is performed when a video floppy is replaced, etc., and the result of this processing, that is, data indicating whether a track is unrecorded or recorded, is sent to the recording control device 70 or system control device 10 corresponding to each track. is stored in the memory as a track map.

If necessary, the envelope detection signal is also used in the recording check process. The recording check process is to check whether the recorded still/video signal has been recorded on a predetermined track using the magnetic head 2 as described above, and whether the envelope detection signal has been recorded on a predetermined track. If it is equal to or higher than the threshold φ level, it is determined that recording has been performed.

The envelope detection tri signal is also used to detect the peak position of a track in playback mode.

FIG. 2 shows the state of recording on the video floppy 1 recorded by operation in the skip mode.

In the still video camera according to the present invention, if the track on which the additional information signal of the one-character information cap for sound is recorded is a track adjacent to the track on which the still video signal is to be recorded, it is in the forward direction (inner circumference side). ) or adjacent in the opposite direction (outer circumferential side). Figure 2 (A) shows an embodiment in which a track for recording additional information is provided in a track adjacent in the forward direction to a track on which a still video signal is to be recorded. Figure 2 (B
) are shown respectively.

In FIGS. 2(A) and 2(B), the shaded area indicates that the track is a recorded track.

A track marked with an empty J indicates that it is an unrecorded track.As mentioned above, there are two recording modes: frame recording mode and field recording mode, but in both recording modes, recorded tracks are One track adjacent in either the forward or reverse direction is left as an unrecorded track.Additional information signals such as audio are recorded on this unrecorded track.

FIG. 3 is a flowchart showing the procedure for transporting and positioning the magnetic head in recording processing. Normal mode and skip mode are considered here. Edit mode is excluded here because the magnetic head is transferred to a designated track. In principle, this flow chart can be applied to either of the embodiments of FIG. 2 (Δ) and (B) in the skip mode. Steps that are different processes in the embodiments of FIGS. 2(A) and 2(B) will be explained each time.

The open/closed state of the packet is checked based on the presence or absence of a detection signal from the packet switch 7 (step +01);
The presence or absence of the video floppy 1 in the packet is determined by the video floppy detection switch 8 (step 102). Video floppy 1 is in the packet
and the packet is closed (step 101).
．． (YIES at step 102), it is checked whether a track map indicating whether or not each track of Video Fronbi 1 has been recorded has already been created (step 103).
). The track map is stored in the recording control device 70 as described above.
or stored in the system controller IO, so the track map is created by examining the save state or by examining the flags that are set when the track map is created and reset by opening the packet. It is determined whether it has been created or not.

When the packet is opened, it is assumed that the video floppy has been replaced, and the track map is cleared or the above-mentioned flag is reset. In such a case, that is, the track map has not been created (NO in step 103).

The creation process is performed (step 104). As mentioned above, the track map transports the magnetic head 2 from the home position to the end position.
The presence or absence of recording is determined depending on whether or not the envelope detection signal of each track exceeds a predetermined threshold level, and this determination is made for all tracks to create an image. Next, the system controller lO
It is determined whether the set recording mode is the normal mode or the skip mode based on the input signal states of the various mode switches 11-14 that are input to the recording mode (step l05).

When the set recording mode is the skip mode, the step motor 87 is driven by the driver 86 with reference to the track map created in 9.

The magnetic head 2 (referring to the outer peripheral side of the two magnetic heads; the same applies hereinafter regarding magnetic head movement) is transferred to a track located two tracks forward from the last recorded track of the video floppy 1. (Step 10
G). The last recorded track is a t12 recorded track in which all tracks located in the forward direction from the trunk have not yet been recorded. In the example shown in FIG. 2(A), the last recorded track is track Nα7, so the magnetic head 2 is transferred to track No. 9 and positioned on this track, as shown in FIG. 2(B). In the example, the last recorded track is track No. 8, so the magnetic head 2 is transferred to track k10 and positioned on this track.

However, if all tracks on the video floppy are unrecorded, positioning is performed in step 10B as follows. As shown in FIG. 2(A), when the track for recording additional information is provided on the inner circumferential side of the track on which the still video signal is to be recorded, the magnetic head 2 is No. 1.
track. As shown in FIG. 2 (13), when the track for recording additional information is provided on the outer peripheral side of the track on which the still video signal is to be recorded, the magnetic head 2 is positioned at track No. 2.

Thereafter, the still video signal photographed by photographing and recording processing is recorded on the track on which the magnetic head 2 is positioned in step 1-B. When the magnetic head 2 finishes recording on this track (YP:S in step 107), it is determined whether the mode is field recording mode or frame recording mode based on the manual setting signals of mode switches 11 to 14 (step 108). .

When the field recording mode is set, a number of drive pulses corresponding to forward movement of the magnetic head 2 by two tracks are applied to the step motor 87. As a result, the magnetic head 2 is moved and positioned by two tracks in the forward direction, and the video floppy 1 is provided with an unrecorded empty track adjacent to the recorded track in the forward direction (step 109). In the example shown in FIG. 2(A), track N
When the recording on CL 7 is completed, the magnetic head 2 is sent to track Nα9, leaving track No. 8 unrecorded. In the example shown in FIG. 2(B), the magnetic head 2 is sent to track Nα9. When recording is completed, the magnetic head 2 is sent to track No. IO, and is moved to track Nα9 (
(adjacent to track Nα10 in the opposite direction) will be left unrecorded. In this way, the magnetic head 2 is positioned on the unrecorded track to be recorded next and is prepared for the first photographing.

When frame recording mode is set, for secondary shooting and recording after recording processing.

The magnetic head 2 is moved three tracks in the forward direction.

The video floppy 1 has one unrecorded empty track adjacent to the recorded track in the forward direction (
Step 110).

The reason why three tracks are transferred in the forward direction in the frame recording mode is that in frame recording, as mentioned above, two magnetic heads are used to record (2) on two adjacent tracks. For example.

In the example shown in FIG. 2(A), No. 4 and No.
When recording on track No. 5 is completed, the two magnetic heads are moved to positions hα7 and No. 8.

If the set recording mode is normal mode (step +05), there is no need to provide empty tracks, so the created track map is referred to.

The magnetic head 2 is transferred to a track located one track inside the last recorded track and positioned at the parenthesized track (step 111).

In the example shown in FIG. 2(A), the last recorded track is N01.
Since it is track No. 7, the magnetic head 2 is on track No.
It will be positioned on track 8 and will be waiting.
In the example shown in FIG. 2(B), the last recorded track is No.
Since it is track No. 8, the magnetic head 2 is on track N0.
It will be positioned on track No. 29 and will be on standby.

If all the tracks of the video floppy are unrecorded, the magnetic head 2 is positioned at track No. 1 and is on standby.

Thereafter, when photographing is performed, the still video signal is recorded on the track where the magnetic head 2 is located.

When this recording is completed (YES in step 112),
A determination is made as to whether the mode is field recording mode or frame recording mode (step 113).

When set to field recording mode.

The magnetic head 2 is moved one track in the forward direction and positioned adjacent to the recorded track (step 114).

When set to frame recording mode, magnetic head 2
is transported two tracks in the forward direction and positioned adjacent to the recorded track (step 115). In this way, in the normal mode, the camera is positioned on a track adjacent in the forward direction to the previously recorded track in preparation for the next photographic recording.

If a track map has already been created (step +
03: YES), the state of the set recording mode, ie, skip mode or normal mode, is determined by mode switch 1.
1 to 14 are examined based on human power signals (step 1
1B). In this case.

Since the magnetic disk 2 has already been positioned on the track to be recorded, the process of step 10B and ill is not performed, and the process moves to step 107 if the skip mode is set, and to step 112 if the mode is the normal mode. When photographing and recording on the track on which the magnetic head 2 is positioned is completed, in the skip mode, the processing of step 109 or 110 described above is performed in accordance with the set field or frame mode. mode, step 114 or 115
processing is performed respectively.

Next, a mode will be described in which a signal of a single frequency is recorded on a track for recording additional information without making the track for recording additional information an unrecorded track. As described above, modes for recording signals of a single frequency include full recording, in which recording is performed over the entire circumference of the track, and partial recording, in which recording is performed in a predetermined angular area of the track.

Recording a signal of a single frequency is particularly advantageous in full recording because it is relatively easy to erase the signal. That is, in the case of full recording, when audio or the like is recorded on the additional information recording track, the single frequency signal already recorded there is erased. In addition, in the case of all recording, the envelope is detected during the track search process, so it is determined that it has been recorded rather than unrecorded, so other still/video signals may be recorded by mistake on this additional information recording track. There is no need to worry about being exposed. However, when recording additional information such as audio, it is a problem if you do not know the additional information recording track, so it is necessary to memorize the additional information recording track number in a memory etc. and output it by display kf depending on the case. Probably.

In some recordings, a single frequency signal is recorded only at the angular position where the one-phase pulse PG is generated.

There is also a mode in which recording is performed at every predetermined angle. In the mode in which partial recording is performed at the angular position where the phase pulse PG is generated, effective additional information is not recorded at this angular position, so when an additional information signal such as a single voice character is recorded later on the additional information recording track. There is no need to erase the already recorded t-frequency signal. In the track search process, envelope detection for each track is performed at a predetermined angular position of one or a number of stages on the video floppy.

The manner in which the partial recording is performed at the angular position where the envelope is detected is substantially the same as the manner in which the whole is recorded.

First, a mode in which the position is partially recorded at the angular position where the eye pulse PC is generated will be described.

FIG. 4 is a still video camera capable of recording a single frequency signal on a track for recording additional information, and shows in detail the part related to the recording control of the single frequency signal, and other details. The portion shown in FIG. 1 is the same as the block diagram shown in FIG.

FIG. 5 is a time chart showing the operation when recording a single frequency signal on an additional information recording track.

For example, a 6MIIz signal is used as a single frequency signal to be recorded on the additional information recording track. This 6
The voltage corresponding to the frequency of MIIz is generated by the voltage generation circuit 91.
is output from the voltage controlled oscillation circuit 9 via the switch 92.
3, and the fr of 6M1lz from this oscillation circuit 93
, issue occurs. A switching circuit 94 is provided on the signal input side of the recording amplifier circuit 77. The switching circuit 94 receives the still/video signal etc. added by the synthesis circuit 76 (terminal a) and the signal output from the oscillation circuit 93 (terminal b)! It is being tested. The switching circuit 94 supplies one of these two input signals to the recording amplifier circuit 77. The switching circuit 94 and the switch 92 are controlled by switching control signals output from the recording control device 70, respectively.
On/off controlled.

The D flip-flop 96 controls the recording gate circuit 78, and its output Q is given to the recording gate circuit 78 as a gate control signal RECI or RFe5. A recording trigger signal RECTRG output from the recording control circuit 7o is applied to the data input terminal of this D flip-flop, and a recording stop signal REC5TOP passed through the OR gate 95 or a recording stop signal REC5TOP from the pulse generation circuit 82 is applied to the clock input terminal CL. A phase pulse PC is provided.

When recording the still video signal outputted from the synthesis circuit 76 to the video floppy, the switch 92 is turned off, and the end fa is selected by the switching circuit 94, so that the still video signal is transferred to the recording amplifier circuit 77. given to. In this case, an operation similar to that of the still video camera shown in FIG. 1 is performed. For example, in the case of field recording, the recording trigger signal RECTR
G (this is the phase pulse P input to the recording 2 control device 7o)
C) is output, and this signal REC
TRG is applied to the data input terminal of D flip-flop 9B. Then, through the OR gate 95, the phase pulse P
, G is input, the D flip-flop 96 detects the H level of the recording trigger signal RECTRG and outputs Q.
stands up. The recording stop signal REC5TOP is not output. When the next phase pulse PG is input, the recording trigger signal RECTRG is at the L level, so the output Q of the D flip-flop 9G is also at the L level.

As a result, H is applied only between two adjacent phase pulses PG.
A gate control signal RECI having the same level is generated, the gate of the recording gate circuit 78 is opened, and a still video signal is applied to the magnetic head 2.

6MI to additional information recording track! When recording a single frequency signal of z, the switch 92 is turned on. As a result, a 6 MHz signal is generated from the single oscillation circuit 93 and applied to the input terminal of the switching circuit 94.

Further, the switching circuit 94 is switched to select the terminal. As a result, the signal of 6Ml1z is transmitted to the recording amplifier circuit 77.
given to.

When the recording trigger signal RECTRG is output from the recording control device 70 and is at H level, the phase pulse PG is
When the output Q passes through the R gate 1 (15 and is applied to the clock input terminal CL of the D flip-flop 106), the output Q rises and is applied as the gate control signal REC2 to the recording gate circuit 78. This causes the gate of the recording gate circuit 78 to open. Then, the 1li-frequency signal outputted from the recording amplifier circuit 77 is applied to the magnetic head 2, and recording is performed.

To record the condolence frequency signal, the recording trigger signal RECTRC applied to the input terminal of the D flip-flop 96 becomes L level, and the recording stop signal REC5TOP outputted from the recording control device 70 passes through the OR gate 95 to the D
The gate control signal REC2 is inputted to the clock input terminal CL of the flip-flop 9B until the gate control signal REC2 becomes L level. When the gate control signal REC2 becomes L level, the gate of the recording gate circuit 78 is closed, so that the single frequency signal is no longer applied to the magnetic head 2.

Therefore, by outputting the recording stop signal RECSTOP immediately after the fall of the recording trigger signal RECTRG, a single-frequency signal is recorded only in the vicinity of the angular position where the phase pulse PG of the video floppy is generated.

When recording the 1i-frequency signal over the entire circumference of the additional information recording track, it is not necessary to output the recording stop signal REC5TOP from the recording control device 70.
The OR gate 95 also becomes unnecessary. At this time, the recording gate circuit 78 is controlled in the same manner as during field recording of still video signals. Switch 92 and switching circuit 9
4, only III control is performed.

When recording a single frequency signal at each predetermined angle of the video floppy, the recording gate circuit 78 is activated at each predetermined angle.
What is necessary is to provide a circuit that generates a gate control signal for opening the gate.

Figure 6 is a track for recording additional information in skip mode! 1 is a flow chart showing a processing procedure for recording a one-frequency signal. The additional information recording track shall be provided at a position adjacent to the still/video signal recording track in the forward direction (inner circumferential side) (corresponding to Fig. 2 (8)), and the single frequency signal will generate a phase pulse PG. A portion shall be recorded at the angular position. Therefore, the additional information recording track on which the single frequency signal has been recorded is not determined to be recorded in the track search process, but is determined to be an unrecorded track, and this fact is set in the track map.

Steps 101 to 105 are the same processes as steps +01 to 105 shown in FIG.
The same No. 71 will be added and the explanation will be omitted.

In step 105, it is determined whether the set recording mode is the normal mode or the skip mode based on the state of the human input signals of the various mode switches 11 to 14 input to the system control device 10. If the set recording mode is skip mode, the created track map is referred to and the track is transferred to a track located two tracks forward from the last recorded track (step 121).
. When all tracks of the video floppy are unrecorded, the magnetic head 2 is positioned at track Nα1. When the normal mode is set, the recording medium is transferred and positioned to a track located one track forward from the last recorded track (step 122).

Thereafter, the still video signal photographed through the photographing and two-edge processing is recorded on the track positioned in step 121 or 122 (step 123). When recording is completed, it is determined whether it is field recording or frame recording (step 124).

When the field recording mode is set, the magnetic head 2 is transported to an adjacent track in the forward direction (step 125), and when the frame recording mode is set, the magnetic head 2 is transported two tracks in the forward direction (step 125). Step 126).

Next, the configuration recording mode is checked (step 1.27),
If the skip mode is set, the rat-frequency signal is recorded only at the position where the one-phase pulse PC occurs in the additional information track positioned in step +25 or 126 (step 12).
8). When the recording of the jl)-frequency signal by the magnetic head 2 is completed, the magnetic head 2 is transferred to an adjacent track in the forward direction and stands by in preparation for the next photographing and recording (step 129). - Through the above processing, an additional information recording track on which a single frequency signal is recorded is provided on the video floppy 1 at a track position adjacent to the inner circumferential side of the track on which the still video signal is recorded.

When the normal mode is set (step 127), there is no need to provide a track for recording additional information, so step 128. 129 is skipped.

As shown in FIG. 2(B), the additional information recording track is provided at a position adjacent to the still/video signal recording track in the opposite direction (outer circumferential side).

- Move the magnetic head 2 to a track located two tracks forward from the last recorded track to record the still video signal 5, and then move the magnetic head 2 one track in the reverse direction. A single frequency signal may be recorded on a track for recording additional information, or a still
One track after video signal recording (field recording)
Alternatively, the mourning frequency signal is recorded on the additional information recording track corresponding to the track on which the still video signal is to be recorded next by moving in the forward direction for two tracks (frame recording),
Furthermore, it may be arranged to move one track in the forward direction and wait.

Also, when performing full-circle recording of a single frequency signal on a track for recording additional information, the track for recording additional information is determined to be a track for recording additional information or a recorded track in the track search process, so it is necessary to store the track for recording additional information in memory. It will be necessary to control the movement of the magnetic head 2.

[Brief explanation of the drawing]

1 to 3 show the first embodiment. FIG. 1 is a block diagram showing the still video camera system (13 components), and FIGS. 2(A) and 2(B) are skip and This shows the recording status of a video floppy recorded in this mode. (^) shows a case where a track for recording additional information is provided on the inner side, and (B) shows a case where a track for recording additional information is provided on the outer side. FIG. 3 is a flow chart showing the processing procedure for controlling the movement of the magnetic head when a track for recording additional information is provided as an unrecorded track. 4 shows a second embodiment, and FIG. 4 is a block diagram specifically showing a circuit portion extracted from the block diagram of FIG. 1 for recording a single frequency signal on a track for recording additional information. Figure 5 is a time chart showing the recording operation of a video signal during still recording and a single frequency signal, and Figure 6 is a time chart showing the recording operation of a video signal during still recording and a recording operation of a single frequency signal, and Figure 6 is a time chart showing the recording of a mourning frequency signal on the inner circumferential side to provide a track for recording additional information. 1 is a flow chart showing a processing procedure for controlling transfer of a magnetic head. 1...Video ◆Floppy. 2...Magnetic head. IO...System control device. 11-I4...Mode switch. 70... Recording control device. 78... Recording gate circuit. 82... Pulse generation circuit. 83... Envelope detection circuit. 86... Driver. 87... Step motor. 91... Voltage generation circuit. 93... Voltage controlled oscillation circuit. 95... OR gate. 96... D flip-flop. Patent applicant: Fuji Photo Film Co., Ltd. Agent
Patent attorney Asamichi Kato (
(1 person outside) Trunk No., I 2 3 Trunk No., I 2 3 F-V-mudaj1 Outer circumference Fig. 2 (A) (Town 456789K) --- Fig. 6

Claims (1)

[Scope of Claims] A head transport device for transporting a magnetic head in the radial direction of a rotating magnetic recording medium having a plurality of tracks, a skip mode setting means, and a still video signal when the skip mode is set. means for controlling a head transfer device to transfer the magnetic head by setting one track adjacent to either the order of the track to be recorded or the reverse direction for recording additional information. ·camera.