JP3710525B2 - Imaging device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image apparatus capable of recording and reproducing still images and moving images using an image recording and reproducing apparatus.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a system capable of recording a mixture of moving images and still images and adding index data to an image is disclosed in Japanese Patent Application Laid-Open No. 7-98965 and Japanese Patent Application Laid-Open No. 6-113253. No. etc. are known.
In the technique disclosed in Japanese Patent Laid-Open No. 7-98965, as shown in FIG. 4, image tracks are continuously arranged on a video tape, and each track is provided with a subcode area 41, and a still image index is displayed. Record in this area. A still image index is recorded on an arbitrary frame automatically when shooting a still image and manually by an operator when shooting a moving image.
[0003]
In the technique disclosed in Japanese Patent Laid-Open No. 6-113253, as shown in FIG. 5A, the video image group 51 arranges images corresponding to a series of moving image data in the time axis direction t in units of frames. ing. This video image group 51 is subjected to a kind of video slice processing in a direction Ht indicated by an arrow in the figure, and a video index (still image) is formed as shown in FIG. That is, the vertical slit 54 set on the frame 52 is scanned in the horizontal (H) direction at a predetermined speed, and when reaching the right end of the frame 52, it is repeatedly scanned from the left end (reference position) in the H direction again. . Accordingly, the vertical slit 54 is scanned in the oblique Ht direction in the three-dimensional space including the time axis.
[0004]
The vertical slit 54 scans the video signal group 51 from the left end to the right end in the Ht direction, and when the N slits 52 are crossed as shown in FIG. A video index screen is formed by sampling a plurality of sheets and joining the slit images in the horizontal direction. Here, L is the width of the frame 52, that is, the horizontal direction of the screen.
[0005]
[Problems to be solved by the invention]
According to the apparatus disclosed in Japanese Patent Laid-Open No. 7-98965, it is necessary for an operator to manually add a still image index during moving image shooting, and it is automatically formed by the apparatus disclosed in Japanese Patent Laid-Open No. 6-113253. A still image is obtained by combining a plurality of moving images that differ in time into slit shapes and combining them together.For example, when a subject is moving at high speed in a moving image scene, The subject image may be distorted.
[0006]
The present invention records a dummy still image at the time of moving image shooting and further degrades the image quality of the dummy still image in order to easily search for a desired moving image scene from an image device in which still images and moving images are recorded together. The purpose is not to let it.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problem, an image apparatus according to the present invention includes:
In random access recordable image device by mixing the still and moving image,
A coding circuit that converts an input image signal into a data format corresponding to a still image and a moving image;
A recording / playback control circuit for controlling recording of an image signal of a still image or a moving image after data conversion;
When recording a video, record a still image at the start of video recording that is a dummy still image for easily searching for a desired video scene, and perform still image shooting during the video recording. And a determination circuit for controlling the encoding circuit and the recording / reproducing control circuit so that the recorded still image is overwritten and recorded on the dummy still image.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, an encoding circuit 1 performs data conversion in order to write an input image signal in a data format corresponding to a still image and a moving image, and a recording / reproducing control circuit 3 performs recording / reproducing on the disc. The index creation circuit 2 creates index data accompanying the still image recording, and the determination circuit 6 determines whether the coding circuit 1 and the index are in accordance with the state of the moving image shooting switch 4 and the still image shooting switch 5. The creation circuit 2 and the recording / reproduction control circuit 3 are controlled.
[0009]
When the still image shooting switch 5 is operated, a control signal for converting image data into still image data is output from the determination circuit 6 to the encoding circuit 1, and a control signal for generating index data is output to the index generation circuit 2. A control signal for recording image data and index data on the random access disk is output to the recording / playback control circuit 3, and still images and index data are recorded on the disk.
[0010]
When operating the moving image capturing switch 4, is an output control signal for converting the judging circuit 6 to the code circuit 1 image data into moving image data, control signals for indexing data is output to the indexing circuit, recording A control signal for recording data on the random access disk is output to the control circuit 3 and a moving image is recorded on the disk. At this time, the determination circuit 6 performs a dummy recording forcibly recording at the time of moving image shooting as shown in FIG. When the still image data and the index data are recorded on the random access disk at the beginning of the moving image to be recorded, the moving image is recorded, and when the still image shooting switch 5 is operated during the shooting of the moving image, Overwrite and record the forcibly recorded still image and index data.
[0011]
In the present embodiment, dummy still image data and index data are recorded at the head of the moving image to be recorded, but this recording area can be at any position on the random access disk. For example, as shown in FIG. 3A, it may be recorded in an area (area) different from the moving picture data recording area on the same disk surface on which the moving picture data is recorded, as shown in FIG. as shown, it may be recorded on the surface opposite the disk surface which video data is recorded, as shown in FIG. 3 (C), the still image recording predetermined track within the same recording surface of the random access disk It may be assigned as a dedicated track .
[0012]
At this time, it is effective to add information such as “which track is the starting point of a moving image including the still image” to the dummy still image or index data. , Titles, flags, etc. Furthermore, the data itself may be handled as index data.
In this embodiment, dummy still images and index data that are forcibly recorded at the time of moving image shooting are recorded and recorded at the start of moving image shooting, but only dummy still image shooting is performed at the start of moving image shooting, and dummy index data is recorded. The recording may be performed at the end of moving image shooting.
[0013]
According to the above embodiment of the present invention, the following configuration is obtained.
(1) In an image device for recording a moving image or a still image on a randomly accessible video recording disk,
When recording a still image, the image device is characterized by recording the still image data and corresponding index data.
(2) The image device according to (1), wherein a still image or index data is forcibly recorded during moving image shooting.
(3) The forcible recording is performed by overwriting the forcibly recorded data when a still image recording operation is performed after the forcibly recording the still image or the index data. Image device.
(4) The image apparatus according to (1), wherein when a still image is recorded during moving image shooting, the still image or index data is recorded at the head of the moving image recording area.
(5) The image apparatus according to (1), (2), or (4), wherein the index data recording area is separated from the image recording area.
[0014]
【The invention's effect】
According to the image device to which the present invention is applied, it is possible to easily access a desired moving image scene and quickly reproduce it.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a diagram illustrating an example of a recording part of a still image and index data.
FIG. 3 is a diagram illustrating an example of a recording part of a still image and index data.
FIG. 4 is a schematic diagram showing one of the conventional examples.
FIG. 5 is a schematic diagram showing one of conventional examples.
[Explanation of symbols]
1 Coder 2 Index creation circuit 3 Recording / playback control circuit 4 Movie shooting switch 5 Still image shooting switch 6 Judgment circuit 41 Subcode area 51 Video image group 52 Frame 54 Vertical slit

Claims (1)

In random access recordable image device by mixing the still and moving image,
A coding circuit that converts an input image signal into a data format corresponding to a still image and a moving image;
A recording / playback control circuit for controlling recording of an image signal of a still image or a moving image after data conversion;
When recording a video, record a still image at the start of video recording that is a dummy still image for easily searching for a desired video scene, and perform still image shooting during the video recording. A determination circuit that controls the encoding circuit and the recording / reproducing control circuit so that the recorded still image is overwritten and recorded on the dummy still image,
An image apparatus characterized by that.

Images