JPH05130554A - Recorder - Google Patents

Abstract

PURPOSE:To realize the recording not causing the missing in the recording or recorded still picture data and to enable moving picture photographing without missing a scene desired to film in the recorder capable of recording moving pictures and still pictures on the common recording medium. CONSTITUTION:A system controller 111 controls the still picture recording to be continued till the data end during the still picture recording when the recording is interrupted. In starting and stopping the recording medium, the system controller 111 extracts the ID in the operating still picture data according to the turning on of a trigger signal from an operation part 113 and the other operation. The terminal of the still picture data is detected, and the still picture recording is started according to the detection of the terminal of the data, and the recording medium is stopped. Further, the recording is started according to a recording start instruction in the case of moving picture recording.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus capable of recording moving images and still images on a common recording medium in parallel, for example, a video tape recorder (VTR) or a camera-integrated VTR ( The present invention relates to a recording device such as a video camera.

[0002]

2. Description of the Related Art In recent years, in the field of magnetic recording, there is an increasing demand for high-density recording, and even in a video tape recorder (VTR), the tape running speed is reduced to perform higher-density recording. ing. When the running speed of the tape decreases, for example, when an audio signal is recorded using a fixed head, the relative speed cannot be high,
There is a problem that the reproduction sound quality is deteriorated. As one means for solving this, there is a method in which the length of the track scanned by the rotary head is made longer than in the conventional case and the time-axis-compressed audio signal is sequentially recorded in the extended portion. Specifically, in the rotary 2-head helical scan type VTR, the magnetic tape was simply wound around 180 degrees or more on the conventional rotary cylinder, whereas in this method, the magnetic tape is wound around (180 + θ) degrees or more and is additionally wound. An audio signal that has been PCM-compressed and time-axis compressed is recorded in the "θ" portion.

FIG. 1 shows a tape running system of such a VTR, and FIG. 2 shows a recording locus on a magnetic tape by the VTR shown in FIG. In FIG. 1, 7 is a magnetic tape, 21 is a rotating cylinder, and 6A and 6B are heads attached to the cylinder 21. In FIG. 2, reference numeral 22 is a video signal recording area portion of a track formed on the tape 7, and 23 is a PCM audio signal recording area portion. The video signal recording area portion 22 is traced by the heads 6A and 6B in the period in which the rotary cylinder 21 rotates 180 degrees, and the PCM audio signal recording area portion 23 is traced in the period in which the rotary cylinder 21 rotates θ degrees. As described above, as an example of applying the method of recording a digital signal in another area while recording a video signal, it has been proposed to record a still image in the digital signal recording area 23 as a digital signal. Since the recording time of a still image is not limited, it is possible to record all the information on the magnetic tape 7 by scanning the PCM area a plurality of times. According to this proposed method, not only can a still image be captured using the same recording medium as the same image capturing device as that for the movie recording, but also the tape running in the conventional VTR is stopped and the video signal of the same track is reproduced. It is possible to obtain a still image having a higher image quality than the still image.

Next, referring to FIG. 3, the configuration and operation of a conventional circuit in a camera-integrated VTR having this type of still image recording function will be described. In FIG. 3, reference numeral 1 is an image pickup device for converting an image into an electric signal, 2 is a signal processing circuit for converting the electric signal into a video signal (video signal indicating a moving image), and 4 is for recording the video signal on a magnetic tape. A recording processing circuit for performing the processing of 5, a viewfinder (VF) for a video monitor, 6 a head for recording a signal, and 7 a magnetic tape. Further, 9 is an A / D (analog / digital) converter for converting the video signal processed by the signal processing circuit 2 into digital data, 11 is a memory for temporarily storing digital video signal data, and 14 is the image memory 1.
A rate conversion circuit for converting 1 data into a rate for recording on a magnetic tape, 15 a data compression circuit for compressing data, 16 an error detection / correction code, I for compressed data
This is a PCM processing circuit that performs addition of D (identifier), block address, etc., and interleave processing. Furthermore, 1
Reference numeral 8 is a timing generation circuit for generating respective timing signals for the respective circuits 9, 11, 14 to 16, and 19 is a system controller for controlling the operation of each part of the VTR, still image recording, special effects, etc. Reference numeral 20 is a release button for instructing the start of still image recording.

First, an electric signal of a subject image picked up by the image pickup device 1 is converted into a video signal by a signal processing circuit 2. This video signal passes through the switch 3, is converted into a recording signal by the recording processing circuit 4, and is recorded on the magnetic tape 7 by the head 6. The state can be monitored by the viewfinder 5.

On the other hand, when the release button 20 is pressed, the video signal for one screen is A / D as still image information.
It is converted into digital data by the converter 9 and stored in the image memory 11. The stored video (still image) data is rate-converted by the rate conversion circuit 14 and compressed by the compression circuit 15, and the PCM processing circuit 1
After being converted into PCM data to be recorded by 6, the magnetic tape 7 is recorded by the head 6.

Further, in a VTR, a so-called seam (joint) photographing function is generally adopted so that a seam for each cut is inconspicuous on a reproduction screen when an image photographed by a video camera is recorded on a magnetic tape. Has been done.
FIG. 4A schematically shows the movement of the tape during the continuous shooting that is conventionally performed. This traditional approach
First, when shifting from a recording state (indicated by a double line in the figure) to a recording pause (pause) state, the temporarily stopped tape is rewound by a certain amount, and the pinch roller is kept in pressure contact with the capstan and stands by. Then, after the recording button is pressed and the resumption of recording is instructed, the reproduction state is usually set for a predetermined period corresponding to the rewound amount, the tracking control is performed, and then the recording state is transitioned.

By performing the continuous shooting operation as described above, while tracking the recorded track,
Since the tape is conveyed until the start of recording, the disorder of the tracking pattern at the joint can be reduced.

[0009]

However, unlike a moving image or PCM sound in which one field is recorded in one track, the data of a digital still image is recorded over several tens to several hundreds of tracks, and the data for one track is recorded. Lack of data can be a problem.

However, in the continuous shooting by the conventional technique as described above, it is not possible to compensate for the loss of the still image data already recorded. This is not only a problem during continuous shooting, but is caused by the loss of some of the still image data that has already been recorded or is about to be recorded, because recording is started or stopped from any tape position. .. Therefore, the conventional apparatus of this type does not always reproduce the still image in a perfect state.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording apparatus which eliminates the above-mentioned drawbacks and is free from the possibility of lack of still image data and which can also be used for moving image shooting.

[0012]

In order to achieve the above object, according to the present invention, in a recording apparatus capable of recording a moving image and a still image in parallel on a common recording medium, a command for interrupting recording is provided. In the case where there is still image recording, a control means for performing control to continue recording the moving image and the still image until the end of the still image data in the recording target is provided.

Further, according to the present invention, in a recording apparatus capable of recording a moving image and a still image in parallel on a common recording medium, when there is a command to start recording, the recording is performed on the recording medium. The present invention is characterized in that a control means is provided for starting recording of a moving image and a still image in response to detecting the end of the completed still image.

Further, according to the present invention, in a recording apparatus capable of recording a moving image and a still image in parallel on a common recording medium, when there is an instruction to start recording, the moving image is responded to in accordance with the instruction. It is characterized by further comprising control means for starting the recording and starting the recording of the still image in response to detecting the end of the still image already recorded on the recording medium.

Further, according to the present invention, in a recording apparatus capable of recording a moving image and a still image on a common recording medium in parallel, when there is a command to stop the recording medium, the recording medium is recorded on the recording medium. It is characterized by comprising control means for stopping the recording medium in response to detecting the end of the recorded still image.

[0016]

According to the present invention, since the recording is not interrupted until the end of the still image data being recorded during the recording of the still image, the lack of the still image data to be recorded can be prevented.

Further, according to the present invention, the recording of the moving image and the still image is started in response to the detection of the end of the still image data already recorded at the start of the recording. It is possible to realize recording that does not cause a dropout, for example, continuous shooting.

Further, in the present invention, at the start of recording, the still image recording is started in response to the detection of the end of the already recorded still image data, whereby the already recorded still image data is lost. In addition to realizing the recording that does not occur, the moving image recording is started immediately in response to the recording start command, so that the desired scene can be shot without dropping. Further, in the present invention, when there is an instruction to stop the recording medium, the recording medium is stopped in response to the detection of the end of the still image already recorded on the recording medium. You can move quickly.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

(1) First Embodiment FIG. 5 shows a schematic circuit configuration of a video tape recorder (VTR) as one embodiment of the present invention. In FIG. 5, 10
1 is a rotary drum, 102 is a drum rotation motor (D
M), 103 are recording / reproducing rotary heads (RPH), 10
4 is a rotary erasing head (FEH), 105 is a capstan (Cp) for tape running, 106 is a capstan motor (CM), and 107 is a magnetic tape. Reference numeral 108 denotes a drum servo circuit that controls the drum motor 102 according to the drum rotation speed detection signal (DFG) and the drum rotation phase detection signal (DPG), and 109 denotes a capstan motor 106 that controls the capstan motor 106 according to the capstan rotation speed detection signal (CFG). A stun servo circuit 110 is a signal processing circuit for processing a recording signal and a reproduction signal of a moving image signal, 11
1 is a system controller, 112 is an erasing circuit, 113
Is an operation unit for key input to specify the mode of the system,
Reference numeral 114 is an ATF circuit that produces a tracking control signal during reproduction, 115 is a video signal input terminal, 116 is a video signal output terminal, 120 is a PCM still image signal format and PC
A still image signal processing circuit for performing processing of returning the M still image signal to the original analog video signal, 121 is an ID generating circuit described later, 122 is an ID separating circuit, and 123 and 124 are switches. In the above configuration, the operation in the recording mode (Rec mode) will be described first.

The tape 107 wound around the drum 101 at a predetermined angle is erased by the rotary erasing head 104 that traces before the recording / reproducing head 103, and then the recording / reproducing head 103 records a moving image signal in the moving image recording area. The moving image signal supplied from the circuit 110 via the switch 123 and the tracking pilot signal are recorded, and the still image signal processing circuit 1 is provided in the still image area.
PCM still image signal from 20 and ID generation circuit 121
The ID data generated in 1 is recorded. At this time, video tracks including a moving image recording area and a still image recording area are sequentially formed at regular intervals. During this time, Capstan 105
Keeps transporting the tape 107 at a constant speed. The drum servo circuit 108 controls the vertical synchronizing signal (VD) of the moving image signal to be recorded and the recording / reproducing head 103 attached to the drum 101 to rotate at a constant speed while maintaining a specific phase difference. There is.

Next, the operation in the reproduction mode (P / B mode) will be described. Of the RF signals reproduced from the recording / reproducing head 103, the moving image signal and the PCM still image signal are the moving image signal processing circuit 110 and the still signal processing circuit 120.
After being demodulated by, one of them is selected by the switch 124 and output from the output terminal 116. The above-mentioned tracking pilot signal is supplied to the ATF circuit 114, and the tracking error signal is output from this ATF circuit 114. This tracking error signal is guided to the capstan servo circuit 109 and used for the tracking control operation by the capstan 105. During this time, the drum servo circuit 108 rotates the drum 101 at a constant rotation speed. The ID data is separated by the ID separation circuit 122 and input to the system controller 111.

In each of the above modes, each part of the system is
It is controlled by control signals C1 to C5 output from a system controller 111 including a microcomputer according to a key input instruction from the operation unit 113. In particular, the drum servo circuit 108 and the capstan servo circuit 109
Is a drum motor 101 and a capstan motor 1
Rotation and stop information of 06, rotation direction information, rotation speed information, rotation phase information, mode information such as recording mode / reproduction mode, etc. are closely exchanged with the system controller 111.

Here, in this embodiment, the magnetic tape 10 is used.
Table 1 below shows IDs (identifiers) to be recorded together with still image data in the PCM signal recording area of No. 7.

[0025]

[Table 1]

By recording ID-5 as shown in Table 1 together with a still picture or audio information, with respect to still picture data recorded on the magnetic tape 107, refer to bits b5 and b6 in ID-5 of the ID. By doing so, it is possible to determine the start point and end point of the still image, and between the start and end points.

Next, the operation procedure of each component at the time of mode switching according to the present invention will be described with reference to the flow charts of FIGS.

FIG. 6 shows the operation when the trigger switch (not shown) in the operation unit 113 is turned on during the recording pause (Rec pause), that is, when the recording start command is issued. In step S1, the system controller 111, which has received a signal input indicating that the trigger switch in the operation unit 113 shown in FIG. 5 has been turned on, first sets the reproduction mode (P / B mode) in step S2, and in step S3, the capstan motor. The tracking operation of the (Cp motor) 106 is controlled (Cp phase control). Next, in the step S4, the PC of the RF signals reproduced from the recording / reproducing head 103 is
The ID is read from the M signal, and it is determined in step S5 whether or not the data is recorded in the still image area based on the ID (see Table 1). If the data is not recorded in the still image area, step S7 is performed as usual. The recording mode (Rec mode) is started, recording of moving images and still images is started, and so-called continuous shooting is performed. On the contrary, if the data is recorded in the still image area, it is determined in step S6 whether or not b5 in ID5 of the above-mentioned ID is 0 or 1, which is the recording section of the still image data. Returning to step S2, the reproduction mode is continuously performed until b5 of ID5 becomes 0, and the end of the still image data is detected. If the end of the still image data is detected or if it is a still image unrecorded portion, b5 = 0 in ID5, so step S
The recording mode (Rec mode) of No. 7 is entered, and recording of still images and moving images is started. By doing so, there is no fear that some of the still image data already recorded will be lost at the start of recording such as continuous shooting.

Next, the trigger switch is turned off during recording.
If so, that is, part of the operation in the case of instructing to stop recording will be described with reference to the flowchart of FIG. 7. During recording, the system controller 111 that has received the trigger OFF signal in step S11 first determines in step S12 whether or not a still image is being recorded. If still image data is being recorded, it is monitored in step S13 whether or not the still image data being recorded is completed. Until the still image data is completed, the process proceeds to step S14 and the recording operation is continued. Then, when the still image data is completed, the process moves from step S13 to the next operation after step S15.

On the other hand, if it is assumed that only the moving image is being recorded when the above trigger switch is turned off, the process directly moves from step S12 to step S15. Step S
In step 15, the recording of the moving image and the still image ends, and step S
After the magnetic tape 107 is stopped in step 16, the magnetic tape 107 is rewound by a certain amount in step S17, the mode is changed to the reproduction mode in step S18, a small amount of tape is fed in the forward direction, and then the recording pause mode is changed in step S19. Move. As described above, a part of the still image data being recorded is not lost, and a recording pause state in which the next still image and moving image can be recorded quickly can be obtained.

Further, FIG. 8 shows the operation when the recording pause state is set immediately after the magnetic tape cassette is inserted and when the various reproduction modes are switched to the recording pause state. The operations in the above two cases are performed in exactly the same operation procedure. First, when a cassette is inserted or a mode switching command is issued in step S21, the reproduction mode is entered in step S22, the phase of the capstan motor 106 is controlled in step S23, and the PC signal of the RF signal reproduced in step S24 is selected.
The ID is read from the M signal, and it is determined in step S25 whether or not data is recorded in the still image area as in step S5. If data is recorded in the still image area, in step S26, as in step S6, I
It is determined whether b5 in ID5 of D is 0 or 1, and if b5 = 1, the process returns to step S22 and the reproduction mode is continuously performed, and the end of the still image data is continuously detected in step S26.

In step S26, b5 = 0 in ID5
If the end of the still image data or the unrecorded state is detected, the magnetic tape 107 is stopped in step S27 and then the magnetic tape 107 is processed in step S28.
After rewinding by a certain amount, the process shifts to the reproduction mode in step S28, the small amount of magnetic tape 107 is fed in the forward direction, and then the recording pause mode starts in step S30.

When recording only a moving image, the magnetic tape 107 is stopped immediately after moving from step S25 to step S27, a certain amount of magnetic tape is rewound by steps S28 to S30, and a small amount of magnetic tape is fed in the forward direction. rear,
Move to recording pause mode. By doing this, recording of still images and moving images can be started quickly in the recording pause state.

In this embodiment, the data end is recorded when the trigger is turned off. However, it goes without saying that even if the power is turned off, the same control as shown in FIG. 9 is required.

Further, in this embodiment, when the recording pause mode is entered, the magnetic tape is rewound and then fed in a small amount in the forward direction (steps S17 and S18 in FIG. 7).
(Refer to), there is no change even if the recording pause mode is entered in the rewound state.

As described above, according to this embodiment, the recording is controlled to continue until the data end even during the recording of the still image even if the recording interruption command is issued. it can.

In this embodiment, the ID in the still image data
Since the data end is detected from this, and recording is started in response to this detection, continuous shooting can be performed without the lack of already recorded still image data.

(2) Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. 10 to 12. Since the circuit configuration itself of this embodiment is the same as that of the first embodiment of FIG. 5, its description is omitted.

FIG. 10 shows a control procedure when the trigger is turned on during the recording pause, FIG. 11 shows a tape pattern at the time of continuous shooting, and FIG. 12 shows a timing chart of the recording timing.

In step S31 of FIG. 10, a signal indicating that the trigger switch has been turned on is obtained from the operation unit 113 shown in FIG. 5 (point a in FIG. 12). The system controller 111 first sets P / B in step S32. In the (playback) mode, the tracking operation control of the Cp motor 106 is performed in step S33, and the recording of the moving image signal in the moving image area is started in step S38 (point b in FIG. 12).

On the other hand, in step S34, the ID is read from the PCM signal in the reproduction RF signal, and in step S35, the ID is read.
Based on D, it is determined whether or not the data is recorded in the still image area. If the data is not recorded in the still image area, the process proceeds to step S37, and the still image is also moved to the recording mode to stop the still image. Start recording the image.

If data is recorded in the still image area in step S35, it is determined in step S36 whether b5 in ID5 is 0 or 1 as in step S6 of FIG. 6, and if b5 = 1. When it is determined that the still image data that has already been recorded is in the middle, the process returns to step S32, and the still image area is continuously reproduced. When b5 = 0, it is the data end of the still image data, and therefore it is determined that data loss will not occur in the already recorded still image even if recording is started, and the still image R is determined in step S37.
The mode is switched to the ec mode and the recording of a still image is also started (Fig. 12
Point c).

The operation when the trigger is turned off during recording is the same as that in the first embodiment shown in FIG. 7 and the operation when shifting from the still mode to the recording pause is the same as in the first embodiment shown in FIG.

As described above, according to the present embodiment, the data end is detected from the ID in the already recorded still image data, and the recording of the still image is started based on this detection. Therefore, it is possible to perform continuous shooting without a lack of still image data, and since continuous shooting is started immediately for a moving image signal, it is possible to avoid missing a desired scene.

[0045]

As described above, according to the present invention, the following effects can be obtained.

(1) Trigger signal OFF, power OFF
Even if an instruction to interrupt the recording is issued due to, for example, the recording is not interrupted until the end of the data during the recording of the still image, so that the lack of the still image data to be recorded is prevented.

(2) Further, when recording is performed on a recording medium on which a still image has been recorded, since the recording is started by detecting the end of data of the recorded still image on the recording medium, it has already been recorded. It is possible to realize recording that does not cause the lack of still image data that is present.

(3) Further, since the recording start timing is obtained separately for the moving image and the still image, and the recording is started immediately for the moving image, it is possible to shoot without missing the desired scene. ..

(4) Since the recording medium is stopped in the recording pause mode or the like in response to the detection of the end of the still image data, the recording of the moving image and the still image can be started quickly when the recording is restarted.

[Brief description of drawings]

FIG. 1 VT that winds a magnetic tape up to the PCM recording area
It is a schematic plan view which shows the structural example of the traveling system of R.

FIG. 2 is a plan view showing a recording track on a magnetic tape recorded by the VTR of FIG.

FIG. 3 is a conventional camera-integrated V having a still image recording function.
It is a block diagram which shows the structural example of TR.

FIG. 4 is an explanatory diagram showing the movement of a conventional joint-tapping tape.

FIG. 5 is a block diagram showing a schematic configuration of a VTR according to an embodiment of the present invention.

FIG. 6 is a flowchart showing a control procedure when shifting from a recording pause state to recording in the VTR according to the first embodiment of the present invention.

FIG. 7 is a flowchart showing a control procedure when shifting from a recording state to a recording pause in the VTR of the first embodiment of the present invention.

FIG. 8 is a flow chart showing a control procedure when shifting from a reproduction mode or cassette insertion to a recording pause in the VTR of the first embodiment of the present invention.

FIG. 9 is a power supply OF in the VTR according to the first embodiment of the present invention.
It is a flow chart which shows the control procedure at the time of F.

FIG. 10 is a flow chart showing a control procedure when shifting from the recording pause state to recording in the VTR of the second embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a tape pattern in a VTR according to a second embodiment of the present invention.

FIG. 12 is a timing chart showing the operation timing in the VTR of the second embodiment of the present invention.

[Explanation of symbols]

 101 rotating drum 102 drum rotating motor 103 recording / reproducing rotating head 104 rotational erasing head 105 capstan 106 capstan motor 107 magnetic tape 108 drum servo circuit 109 capstan servo circuit 110 video signal processing circuit 111 system controller 112 erasing circuit 113 operation Part 114 ATF circuit 120 Still image signal processing circuit 121 ID generation circuit 122 ID separation circuit 132 Moving image area 133 Still image area

Claims (4)

[Claims] 1. A recording apparatus capable of recording a moving image and a still image in parallel on a common recording medium, and if a still image is being recorded and a still image is being recorded when a recording interruption instruction is issued. 2. A recording apparatus comprising control means for controlling to continue recording a moving image and a still image until the end of the still image data. 2. A recording device capable of recording a moving image and a still image in parallel on a common recording medium, and a still image already recorded on the recording medium when there is an instruction to start recording. A recording device comprising a control means for starting recording of a moving image and a still image in response to detecting the end of the recording. 3. A recording apparatus capable of recording a moving image and a still image in parallel on a common recording medium, when a recording start instruction is issued, the moving image recording is started in response to the instruction. A recording apparatus, further comprising a control means for starting recording of a still image in response to detecting the end of the still image recorded on the recording medium. 4. A recording device capable of recording a moving image and a still image in parallel on a common recording medium, and when there is an instruction to stop the recording medium, the still recording already recorded on the recording medium. A recording apparatus comprising a control means for stopping the recording medium in response to detecting the end of the image.