JPH01312776A - Still video camera - Google Patents

Abstract

PURPOSE:To accomplish the convenience at the time when an operator performs recording on an unrecorded track in an editing mode, etc. by providing a means for detecting that recording on a final track is finished and a means for displaying the number of unrecorded tracks calculated from a track map. CONSTITUTION:Any of controllers 10, 30 and 70 is constituted of a CPU, a memory storing the program thereof and necessary data and a necessary interface circuit. Moreover, the title camera is provided with a means for forming the track map expressing the presence and absence of recording on the respective tracks of a magnetic recording medium 1, a means for detecting the completion of recording on the final track where recording can be possible and a display unit 21 for displaying the effect that recording is impossible and the number of unrecorded tracks calculated from the track map which exists in the magnetic recording medium when the detecting means detects the completion of recording. In such a constitution, since the number of intermediary unrecorded tracks which exist in the magnetic recording medium is displayed, the camera is made convenient for the time when the operator performs recording on the intermediary unrecorded track of the magnetic recording medium in the editing mode, etc., thereafter.

Description

Detailed Description of the Invention: Summary of the Invention When it is detected that recording on the last track of a magnetic recording medium is completed, the number of unrecorded tracks is counted by referring to a track map and the recording is completed. display and the number of unrecorded tracks.

BACKGROUND OF THE INVENTION The present invention uses a solid-state electronic image sensor (for example, a CC
The present invention relates to a still/video ◆ camera that captures an image using D) and records the output still/video signal on a magnetic recording medium.

In a still video camera, recording is performed sequentially from tracks located on the outer circumferential side of a magnetic recording medium to the inner circumferential side. Then, when recording is performed up to the innermost track, recording on the recording medium ends.

On the other hand, in magnetic recording media, signals from specific recorded tracks, such as tracks where recording has failed, may be erased. In such a case, there will be unrecorded tracks even on the magnetic recording medium in which data has been recorded up to the innermost track. In such cases, it would be convenient for the operator of the still video camera to be able to know the number of unrecorded tracks on the magnetic recording medium. This is because recording can be performed by providing an intermediate unrecorded track recording mode that performs an operation different from the normal recording mode on the intermediate unrecorded track between such recorded tracks. Because it will be.

SUMMARY OF THE INVENTION OBJECT OF THE INVENTION The present invention provides a still video camera that can display when recording on a magnetic recording medium is completed and the intermediate number of unrecorded tracks existing on the magnetic recording medium at that time. The purpose is to

Structure of the Invention 1 Functions and Effects The still video camera according to the present invention is a rotating magnetic recording medium having a plurality of tracks. A means for detecting that recording on the last recordable track has been completed, and when the above-mentioned detecting means detects the end of recording, it is calculated from the fact that recording is not possible and the track map existing on the magnetic recording medium. The present invention is characterized by comprising means for displaying the number of unrecorded tracks.

The final track refers to the track on which recording is performed last when recording is performed in the forward direction.

When recording is performed on the final track and normal recording on the recording medium is completed, a display indicating the end of recording and an intermediate number of unrecorded tracks existing on the recording medium are displayed. The above-mentioned normal recording includes recording in normal mode and skip mode, which will be described later. The intermediate undistributed ti track refers to an unrecorded track sandwiched between recorded tracks, or an unrecorded track located in the opposite direction from the recorded track. Such intermediate unrecorded tracks may result from erasure of recorded tracks or from a skip mode recording operation as described below.

According to this invention, the operator can see at a glance that recording on the magnetic recording medium loaded in the camera has finished, and can quickly replace the magnetic recording medium. Additionally, the intermediate number of unrecorded tracks existing on the magnetic recording medium is displayed, allowing the operator to edit (
This feature is useful when recording on intermediate unrecorded tracks of a magnetic recording medium by a mode capable of recording on intermediate unrecorded tracks, such as an editing mode, or by a recording device (including a camera).

DESCRIPTION OF THE EMBODIMENTS FIG. 1 shows the system configuration of a still video 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 devices 10
．． Each of the 30.70 consists of a CPU (for example, a microprocessor), a memory (RAM, ROM, etc.) for storing 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 7o drives the disk motor 3 and loads/loads the magnetic head 2.
It controls recording of video signals on the video floppy disk 1, such as unloading and moving the magnetic head 2. These control devices 10, 30, 70 are interconnected by serial transmission lines and communicate with each other.

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

This regenerator 90 demodulates the video signal read from the video floppy disk 1, converts it into a color video signal in, for example, NTSC format, and outputs the signal. +1 vitality 9
0 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.

Video floppy 1 has IILfi (for example, 5(1
) book track (e.g. track pitch 100 μm)
) are provided in concentric circles, and by photographing processing, 1
Or 1 field or 1 frame on 2 tracks (
An FM-modulated color video signal (including a luminance signal, nine color difference signals, etc.) for one frame is magnetically recorded. The 50 tracks arranged concentrically on the magnetic recording surface -1- of the video floppy 1 include tracks No. I to No. 50, NQ, in order from the outer circumferential side to the inner circumferential side. It is attached. The home position HP (origin position or standby position) is outside the track No. 1, and the end position EP is inside the track No. 50.

The system control device 10 has a power switch 18゜3f-
ffl mode switches 11-14. Manual switch signals for the shutter release button 15, etc., and packets that detect the open/closed state of the packet containing the video floppy.
The detection signal of the switch 7, the detection signal of the video floppy detection switch 8 for detecting the presence or absence of the video floppy 1, etc. are input. The modes that can be set include frame/field mode, which indicates frame recording or field recording, and normal mode, which records sequentially and continuously on each track.
mode, a skip mode that provides a track for recording additional information on the video floppy, as will be explained in detail later;
There is an edit mode in which additional information such as audio is recorded on the additional information recording track. The set mode, the track number to be recorded, the end of recording on the last track, the number of unrecorded tracks existing on the video floppy 1, and other information are displayed on the liquid crystal display 21. This display 21 is connected to the system control device IO via a bus. Furthermore, when some abnormal condition occurs, the buzzer 22 sounds an alarm.

The shutter release button 15 is of a two-step stroke type, in which the first step of pressing releases switch S1, and the second step of further pressing button 5 causes switch S2.
are respectively turned on. When the switch S1 is turned on, the disk drive motor 3 is driven. After this, switch S
When 2 is 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 splitter 34 that deflects a portion of the incident light to make it incident on the photometric element 5I. It is composed of an infrared cutoff filter 35 and a shutter 3G. The illuminance detection signal of the flFI optical element 51 is manually input to the photographing control device 30 via a logarithmic amplifier 52. By the shooting control device 30.

A process of calculating an aperture value and a shutter speed based on the incident light illuminance detected by the photometric element 51.

The aperture 33 is controlled based on the determined aperture value, and the shutter 3B is opened/closed based on the similarly determined shutter speed. Opening and closing of the diaphragm 33 is performed by a diaphragm motor 48 driven by a driver 47. Aperture 33
A switch 49 is also provided for detecting the opening and closing limit positions of the opening and closing limits. The unlatching and unwinding of the front curtain and rear island of the shutter 36 is performed by a shutter drive 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 . 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, an infrared leading light diode 63 and a light receiving element 64 that receives the reflected light are provided. Based on the output signal of the light receiving probe 64, a focusing processing circuit 65 determines the distance to the subject. Data representing distance is obtained. Using this data, the autofocus motor 4B is driven via the driver 45 under the control of the device 30, and focusing control is performed.

In addition, there is a tele to manually adjust the culm of the 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, a solid-state electronic imaging device 37 is arranged, for example, a two-dimensional imaging cell array such as a CCD, to which an RGB filter is attached for color imaging. The image data accumulated in the imaging device 37 when the shutter 36 is opened is transferred to the signal processing circuit 7.
The signal is read out as a serial still video signal (R, G, B) in synchronization with the vertical and horizontal dot signals given from 1 and input to the signal processing circuit 7j.

The signal processing circuit 71 includes an oscillation circuit, and the vertical ! ! A multiplied signal D and a reference clock signal are created and output. 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.
System control device 10. It is provided to the recording control device 70 and the reproducing device 90. In the signal processing circuit 71, @
The direct reference signal VD is adjusted so as to maintain a constant phase relationship with the phase pulse PG. The signal processing circuit 71 also generates vertical and horizontal synchronization signals having a constant phase relationship with the phase pulse PC.

The signal processing circuit 71 further includes a preamplification circuit and a variable gain amplification circuit (
white balance adjustment circuit) and process matrix circuit. A luminance signal Y and two color difference signals RY and BY are created in the process matrix circuit. These color difference signals 1 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 (path shown) and are FM-modulated in different frequency bands in FM modulation circuits 73 and 74, respectively, and are combined into one.
1 path 75 is synthesized.

Furthermore, data multiplex recording is also possible on video floppies. This multiple recorded data includes initial bits, field/frame data, and track addresses (No.
, ) data, year/month log data, and user usage data. These data are stored in the system controller 10
given from.

The signal processing circuit 71 performs D P S K (DIrl'er
ent1al PhaseShirt Keying)
The signal is modulated, combined with the above-mentioned FM modulated video signal in a combining circuit 7G, and input to a recording amplifier circuit 77.

A magnetic head 2 (
To enable frame recording, the Jrl tracks (two are provided at +'i intervals) are supported so as to be movable in the radial direction of the video floppy 1 by their transport drive control device. And the transfer is controlled in the same direction. This transfer drive 1lIII device includes a stepper motor 87 and its driver 86. 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. The home position detects that the magnetic head 2 has reached the home position HP.
A position switch 6 is also provided, and a detection signal from this switch 6 is given to a recording control device 70. Transferring the magnetic head 2 from the outer circumferential side of the video floppy disk to the inner circumferential side is called forward transfer, and transferring it in the opposite direction is called reverse transfer.

Stop 1 - Magnetic head 2 on video floppy 1
A head loading device is provided to prevent marks on the floppy due to prolonged contact with the floppy. This device includes a head load solenoid 85 and its driver 84, and is operated under the control of the recording control device 70 only during recording or playback (when the video floppy 1 is rotating) or when the power is turned off. The magnetic head 2 is displaced (advanced and retreated) so that the magnetic head 2 contacts the video floppy 1 only when the video floppy 1 is being loaded, and leaves the floppy 1 at other times.

In order to improve the contact between the magnetic head 2 and the rotating video floppy disk 1, a regulating plate (not shown) is provided on the opposite side of the magnetic head 2 with the video floppy disk 1 in between. In addition, the core of the video floppy is
Nearby is a phase detector 5 which detects the leakage magnetic flux of the chucking permanent magnet and outputs a phase detection signal when the video floppy disk 1 reaches a predetermined angular position. 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 PG. circuit 7
1 and input to the recording gate circuit 78. phase pulse P
One G is generated every time the video floppy 1 rotates.

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 narrowing long signal input from the signal processing circuit 7I and the frequency detection signal input from the detector 4.
is controlled to rotate at a constant speed (for example, 3.BOOr, p, m,). Servo control circuit 80
Again. Motor 3 according to commands from recording control device 70
Start and stop 1-.

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 7B
The gate is opened at the timing of the F1.1 pulse PG until the next phase pulse is input manually. As a result, video signals and the like are applied to the magnetic head 2, and recording of still video signals and the like onto predetermined tracks of the video folder 1 is performed. This recording is performed only while the video floppy 1 rotates once. This is the case for field recording. In the case of frame recording, the gate circuit 78 opens its gate for two revolutions of the video floppy 1, and during the first revolution of the video floppy 1 one head 2 records the video of the first film floppy onto a certain track. During the second rotation, the other head 2 records the video signal of the second film to the track adjacent to the above track in the forward direction.

The 11f output such as the video signal from the video floppy disk 1 by the magnetic head 2 is also iiJ function. The FM modulated video signal etc. read from the magnetic head 2 similarly passes through a gate circuit 78, is amplified by an amplifier circuit 77, and is applied to an envelope detection circuit 83 and a regenerator 90. This read signal is used for track search processing not only in the +1r raw 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 disk 1, and outputs a voltage signal corresponding to the envelope. It includes an A/D (acoustic/digital) conversion circuit. The voltage signal representing the envelope is converted into a digital quantity by an A/D conversion circuit, and converted into an 8-bit digital signal representing, for example, 256 quantization levels, which is then input to the recording control device t70.

The envelope detection signal is used by the recording control device 70 to determine whether a track on the video floppy 11- is unrecorded or recorded (track search processing). If the level of the detected signal does not reach the predetermined threshold φ level when the magnetic head 2 is moved across the track, that track is unrecorded.
If the threshold level has been reached, the track has been recorded. Track search processing occurs 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 IO 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 if the envelope detection signal is within the predetermined range. If it is above the threshold level, it is determined that recording has taken place.

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

FIG. 2 shows an example of a track map created in the track search process.

In this figure, the numbers marked on the vertical axis are 0, 10°20,
30.40 represents the lO digit of track number, and the numbers 0 to 10 written on the horizontal axis represent the 1 digit (
The combination of these numbers represents the track number of the video floppy from 1 to Nα50. A code of "1" or "0" shown in the area where the numbers on the vertical axis intersect with the numbers on the horizontal axis indicates whether or not the track number is recorded, and those marked with "1" are recorded. Tracks marked with "0" are unrecorded tracks. In the example shown in FIG. 2, the number of recorded tracks out of 50 on the video floppy is 40, and Jc! The number of recording tracks is 10. According to the track map in FIG. 2, this video floppy has already recorded up to track No. 50, so recording is no longer possible in normal mode or skip mode.

3 to 5 show examples of track numbers displayed on the display unit 23 of a still video camera having the system configuration as described above. The track number and display section 23 form a part of the liquid crystal display 21.

FIG. 3 shows an example of a table 2 showing the completion of recording on the video floppy 1 and the number of unrecorded tracks existing on the video floppy 1 in the normal mode and the skip mode.

rFFJ displayed in a frame in Figure 3 indicates that recording to the final track of video floppy 1 (the final track differs depending on the recording mode as described later) has ended and recording is no longer possible. It is something. The end of recording on the final track is detected by the recording permission/impossibility determination process, which will be described later, and the track number and display section 23 accordingly display "Recording not possible rFFJ".

The display "10" outside the frame indicates the number of unrecorded tracks remaining on the video floppy 1 when recording is completed. If the track map is as shown in Figure 2, this video floppy 1 is no longer recordable, and there are 10 unrecorded tracks, so it is shown in Figure 3. Track No., display section 2
3, rFF-10J is displayed. Unrecorded tracks sandwiched between recorded tracks (tracks shown in Figure 2)
In the map.

For example, No, 5, No, 22. No. 2
Tracks No. 3, etc.) are generated by recording operations in the skip mode or by erasure processing of recorded tracks using the reproducing device 90. The recording end indication is not limited to the display of rFFJ, but may also be made by displaying track N00 (for example, r88J) that does not exist on the video floppy 1.

The display as shown in FIG. 3 on the track fish display section 23 allows the operator of the still/video camera to
It is possible to know the end of recording on the floppy 1 and the number of unrecorded tracks existing on the video floppy 1. A still video signal or an additional information signal will be recorded on the unrecorded track sandwiched between the recorded tracks by the edit mode recording operation.

FIGS. 4 and 5 show examples of displays on the display 21 when it is determined that recording is possible in the recordability determination process.

Figure 4 shows how the track Na of the track on which the magnetic head 2 is positioned is displayed when recording/11f reproduction is to be performed. An example is (B)
1 and 2 respectively show display examples in the frame recording mode (or in the case of reproducing a frame recording signal). As is clear from this figure, a single track number is displayed in field mode, and two track numbers are displayed in frame mode, so whether the setting mode is field mode or Frame mode can be identified.

FIG. 5 shows how the number of remaining tracks that can be recorded on the video floppy 1 is displayed. (A)
In the mode shown in , the number of remaining tracks (8) is displayed within the frame. In the mode shown in (B), rEJ indicating the number of remaining tracks is displayed within the frame, and the number of remaining tracks ("8" in the illustrated example) is displayed outside the frame. In addition to this, the number of recordable tracks can be displayed in a mode in which nothing is displayed within the frame and the number of recordable tracks is displayed only outside the frame. The number of recordable tracks refers to the number of tracks that can be recorded in normal mode or skip mode (from the next track in the forward direction of the recorded innermost track to the 50th track), Regardless of the number of tracks that can be recorded in all modes including edit mode (including unrecorded tracks sandwiched between recorded tracks), or the number of tracks that can be recorded in the set recording mode. good. Further, the number of tracks that can be recorded in the set recording mode and the number of all unrecorded tracks may be displayed.

In any case, when it is determined that recording is possible in the recordability determination process, the display shown in FIGS. 4(A) and (B) (either one depending on the frame/field mode) or FIG. ) or contents as shown in FIG. 5<8) are displayed on the display section 23 in the display 21. When such information regarding an unrecorded track is displayed, it indicates that recording is possible.

Before explaining the operation with reference to FIGS. 6 and 7, the movement control of the magnetic head in each recording mode will be explained.

In the normal mode, the magnetic head 2 is positioned at the innermost unrecorded track next to the two innermost tracks of the recorded tracks. The track is positioned at two positions by shooting (field mode)
or 2 of that track and the track adjacent to the inner circumference
When recording is made to a track (frame mode).

The magnetic head 2 is moved in the forward direction (inner circumferential side) by one track (field mode) or two tracks (frame mode) in preparation for primary photographic recording. In this way, recording is performed continuously in the forward direction up to the final track No. 50 (in the frame mode, No. 49 may be the final track).

In the skip mode, the magnetic head 2 is positioned at the innermost unrecorded track next to the innermost track among the recorded tracks. When recording is performed on one track (field mode) that is positioned by photographing, or on two tracks (frame mode), that track and an unrecorded track adjacent to the inner circumferential side.

The magnetic head 2 is moved in the forward direction by two tracks (field mode) or three tracks (frame mode) to prepare for the first photographing. In this way, for each recording, the track adjacent to the inner (or outer) side of the recording track (or the track to be recorded next) is not left as unrecorded until the final track of Nα50 (N
(O, 48 or No, 49 may be the final recording track), and recording is performed in the order J direction. Therefore, for a recording operation in the skip mode, two consecutive tracks are required in the field mode, and three consecutive tracks are required in the frame recording mode.

In the edit mode, the magnetic head 2 is positioned at the outermost track among the unrecorded tracks. When recording on this unrecorded track is completed, the magnetic head 2 is transferred in the forward direction to the next existing (not necessarily adjacent) unrecorded track. In this way, in the edit mode, recording is performed while searching for unrecorded tracks in the direction starting from the outermost unrecorded track. Edit for recording additional information
In the mode, the track number of the unrecorded track to be recorded,
is designated by the human device.

FIG. 7 shows the magnetic head transfer and display processing based on the determination of whether or not recording i1J is possible. Here, in order to simplify the explanation, only the normal mode and the skip mode will be mentioned. This process is executed by the system control device 10 based on communication with the recording control device 70 and the like.

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 +20), and the presence or absence of a video floppy l in the packet is checked by the video floppy detection switch 8 (step 12).
1). If the knee video floppy 1 in the packet is empty and the packet is closed, step 120.12
1 (YES), it is checked whether a track map indicating whether or not each track of video floppy 1 has been recorded has already been created (step 122). Tiger·
Since the Tsukukenma-pu is stored in the recording controller 70 or the system controller IO like a double series, it can be set by checking the storage status or when the track map is created and the packet is opened. It is determined whether the track map has been created or not by checking the flag that is reset by the track map being created.

When the packet is opened, it is assumed that the video floppy has been replaced, and the track map is cleared (step 123) or the above-mentioned flag is reset. In such a case, that is, if the track map has not been created yet (NO in step 122), its creation processing is performed (step 124). As mentioned above, the track map is created by moving the magnetic head 2 from the home position to the end position, and determining whether recording is to be performed or not depending on whether the envelope detection signal of each track exceeds a predetermined threshold level. is determined,
It is created by making this determination for all tracks.

A track map has been created. or step 1
Once the track map is created in step 24 (step 12
2 (YES), press shutter release button ■5, erase switch (provided on regenerator 90)
It is determined whether recording or erasure has been performed on the video floppy 1 by the human power signal (step 1).
25). When recording or erasing occurs, the track map is updated (step 126). That is, when recording is performed, "1" is set corresponding to the recorded track of track map l], and when erasing is performed, "0" is written.

After this, a process for determining whether recording is possible is performed (step 12).
7). This process is illustrated in FIG.

Based on the input signal states of the various mode switches 11 to 14 manually input to the system 1+111 device 10, it is determined whether the set recording mode is the normal mode or the skip mode (step 101).

If normal ◆ mode is set.

Next, it is checked whether it is set to field mode or frame mode (step 1).
06). If the field mode is set, refer to the track map to determine at least the track number,
It is determined whether the track Nα50 is unrecorded (step I (17)). If the track Nα50 is unrecorded (YES at step 107).

Since field recording is possible, this fact is stored in the memory (step If) 4), and the process returns. Truck N
o, if 50 tracks have been recorded (step 10
7 (NO), it is no longer possible to record in normal mode, so 7c! The fact that recording is not possible is memorized (
Step 109).

If the setting mode is frame mode (step 1)
06), ) It is checked with reference to the rack map whether at least two consecutive tracks, track No. 49 and track No. 50, are unrecorded (step 108). If none of the tracks have been recorded (
(YES in step 108), it is stored in the memory as recordable (step 104), and frame recording cannot be performed if either track has already been recorded.
It is stored in the memory as unrecordable (step 109).

If the skip mode is set (step 101), then it is checked whether the field mode or frame mode is set (step 102). When field mode is set, in skip mode, an unrecorded track is provided on the track adjacent to the track to be recorded (on either the outer or inner side), so two consecutive tracks are created. is necessary. Then, it is checked whether at least track No. 49 and track No. 50 are unrecorded (step 103). If any track is unrecorded, the process moves to step 104 (recording is possible), and if any track -h' has been recorded, the process moves to step 109 (recording is not possible).

If set to frame mote (step +02
), at least truck N cost 48. Track no.

It is checked whether tracks No. 49 and No. 50 are unrecorded (step 105). If all these tracks are unrecorded, the process moves to step 104 (recordable), and if any one track has been recorded, the process moves to step 109 (recordable).

In FIG. 7, when one or more recordability determination processes are completed, the contents stored in the memory are read out in step 104 or 109 and it is determined whether recording is possible (step 1
28). If there is a memory indicating that recording is not possible (No in step 128), the number of unrecorded tracks existing on the loaded video floppy 1 is counted by referring to the track map (step 1). 29). Based on this counting process, as shown in FIG. 3, a display (FF) indicating the end of recording (recording is not possible) and the number of unrecorded tracks (for example, 10) are displayed on the track Nα display section 23. .

If it is determined that recording is possible (YIES in step 128)
, recording is permitted (for example, a recordable flag is set) (step +31), and depending on the set mode,
The magnetic head 2 is then moved by the step motor 87 to the next track to be recorded in preparation for the next recording (step 132). And frame/field
Depending on the mode, the track Nα on which the magnetic head 2 after transfer is located is displayed on the display section 23 as shown in FIG. 4(A) or (B) (step 131) (FIG. 5(
The number of remaining tracks shown in A) or (B) may also be displayed)
.

In edit mode, when all tracks have been recorded (in the case of field recording), it will be determined that recording is not possible. At this time, rFFJ display is performed. If recording is possible, the track where the magnetic head is located or the number of remaining tracks will be displayed.

In the above embodiment, normal mode and skip mode are used.
Although a video/still camera capable of recording operation in multiple modes is shown, the present invention can also be applied to a still/video camera having only a normal recording mode.

Furthermore, in determining whether or not recording is possible, information regarding unrecorded tracks is displayed when recording r1J is possible (FIGS. 4 and 5), but such display does not necessarily have to be performed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the system configuration of a still/video camera, and FIG. 2 is a diagram showing an example of a track/view/map. Figures 3 to 5 show examples of track numbers and displays on the display. Figure 3 shows how the end of recording and the number of unrecorded tracks are displayed, and Figures 4 (A) and (B) show how the magnetic This shows a mode of displaying the track number where the head is located, and (A) shows an example of the table in field mode.
(B) shows an example of the display in frame mode, as shown in Figure 5 (
A) and (B) show the mode of displaying the number of remaining tracks that can be recorded. (A) shows the display within the frame, and (
B) shows another display example. FIG. 6 is a flowchart showing the procedure for determining whether recording is possible or not, and FIG. 7 is a flowchart showing the procedure for moving the magnetic head and displaying processing based on the determination of whether or not recording is possible. 1...Video floppy. 2...Magnetic head. 10... System control device. 11-14...Mode switch. 21...Liquid crystal display. 23...Track number display section. 70... Recording control device. 8G...driver. 87...Step◆Motor. Patent applicant: Fuji Photo Film Co., Ltd. Agent
Patent attorney Orbital Kato (1 other person) Figure 2

Claims (1)

[Claims] Means for creating a track map indicating the presence or absence of recording on each track of a rotating magnetic recording medium having a plurality of tracks, A still comprising: detecting means; and means for displaying a message indicating that recording is not possible and the number of unrecorded tracks calculated from a track map existing on a magnetic recording medium when the end of recording is detected by the detecting means. ·Video camera.