JP3740206B2 - Image recording device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image recording apparatus in which a still image signal is inserted and recorded in the middle of recording a moving image signal.
[0002]
[Prior art]
Conventionally, when moving image information input from a video camera or the like is digitally recorded, a method has been used in which a moving image is encoded within a screen unit, for example, within each frame and sequentially recorded on a recording medium. Yes. During playback of moving images recorded by this method, still image information is obtained from these pieces of moving image information, and when, for example, printing out or outputting and displaying on a television screen, a moving image is conventionally reproduced and output. In this process, image information for one frame taken into the frame memory is extracted, and the extracted data is handled as a still image. At this time, there has been a problem that a desired still image cannot be completely reproduced due to a data reading error or dropout. Therefore, recently, in order to reproduce still images, a method of recording a still image for one frame to be recorded on a recording medium by repeating several frames during recording of a moving image is used. It is getting to be.
[0003]
FIG. 4 shows a state in which still image data for one frame is recorded in an area for five frames of moving images.
In FIG. 4, when a scene to be recorded as a still image appears during recording (in this case, frame No. 3), by pressing the still image recording switch, the frame No. The same still image is recorded in a period of 5 frames from the position A in FIG. After recording the still image for 5 frames, No. Recording from 8 frames is resumed, and recording of moving images is continued.
[0004]
[Problems to be solved by the invention]
However, as shown in FIG. 4, the frame number is changed from B to E by recording a still image. 3 is recorded, and frame No. 3 is recorded. 4-No. 7 is lost. Therefore, the frame No. 3 to No. There was a problem that the screen suddenly jumped to the screen 8 and the continuity of the image was disturbed.
[0005]
An object of the present invention is to reduce disturbance of continuity of moving images during reproduction in an image recording apparatus that repeatedly records the same still image during moving image recording.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, processing for recording a moving image signal input as a continuous image signal every predetermined period is performed on a recording medium, and the continuous image signal is designated during recording of the moving image signal. A recording processing means for performing processing for repeatedly recording a single image signal as a still image signal for a plurality of the predetermined periods onto the recording medium, and intermittently from a moving image signal input during the repeated recording of the still image signal. An image holding means for extracting and holding an image signal, and a moving image continuously input after recording an intermittent moving image signal read from the image holding means after the recording of the still image signal is completed Control means for controlling the recording operation of the recording processing means is provided so as to record an image signal.
[0007]
According to the second aspect of the present invention, the moving image signal input as a continuous image signal every predetermined period is recorded on a recording medium, and specified from the continuous image signal during recording of the moving image signal. A recording processing means for performing processing for repeatedly recording a single image signal as a still image signal for a plurality of the predetermined periods onto the recording medium, and a moving image signal input during repeated recording of the still image signal A moving image that is input continuously after recording an intermittent moving image signal using the moving image signal held in the image holding means after the recording of the still image signal is completed. Control means for controlling the recording operation of the recording processing means so as to record the signal is provided.
[0008]
[Action]
According to the present invention, when a still image is repeatedly recorded during the recording of a moving image, an image extracted intermittently from the moving image during the recording of the still image is taken out from the image holding means after the recording of the still image is completed. By recording, disturbance of continuity from a playback still image to a playback moving image can be reduced during playback.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows the principle of the present invention.
In this example, the input frame No. When recording the moving image data 1 to 12 on the recording medium, After recording 1 and 2, No. 1 was recorded. 3 frame is designated, this No. 3 frame is designated. Three frames are repeatedly recorded as still images over five frames. No. input during this 5 frame period. 4 to 7 and No. input thereafter. Nos. 8-11 Frames 5, 7, 9, and 11 are extracted intermittently and recorded after the still image recording for the five frame period.
[0010]
If the recording medium recorded in this way is reproduced, the disturbance of the continuity of the reproduced image due to the still image recording period can be reduced as compared with the conventional case of FIG. In addition, No. after the still image recording is completed. By recording the 9th and 11th frames, no. It is possible to smoothly return from 12 to complete continuity. Note that the intermittent extraction of the frame is performed by controlling the writing or reading of the memory as described in the embodiment of FIG.
[0011]
FIG. 2 is an image in which still image information for five frames is inserted and recorded in the order of frames as described in FIG. 1, and temporal discontinuity with the subsequent moving image is reduced. 1 shows an embodiment of a recording apparatus according to the present invention. In FIG. 2, 101 is an image data input terminal, and 102 is a switch (SWa) for selecting a data write memory. Reference numerals 103 and 104 denote image memories (FMa and FMb) such as a frame memory, which divide an image into blocks and rearrange the blocks in order to increase efficiency when compressing data. Reference numeral 105 denotes a switch (SWb) for selecting a memory from which data is read, and reference numeral 106 denotes an encoding circuit, which performs orthogonal transform and quantization to perform data compression encoding. Reference numeral 107 denotes a switch (SWc) for selecting a compressed data write memory. Reference numerals 108 and 109 denote image memories (FMc and FMd) such as a frame memory for storing data compressed by the encoding circuit 106, and an operation for rearranging the images in the original screen arrangement so that a reproduced image is easy to see during fast-forward playback. To do. Reference numeral 110 denotes a switch (SWd) that selects a memory from which compressed data is read. Reference numeral 111 denotes a recording processing circuit for adding signals necessary for recording such as error correction codes and synchronization signals to data, and 112 denotes a magnetic recording medium recorded by a magnetic head or the like. Reference numeral 114 denotes a control circuit that performs switching of each switch, writing and reading of each memory, address control, and the like. 113, when a scene to be recorded as a still image appears, a still image is recorded for a period of several frames of the moving image. This is a still image shooting switch for instructing to do so.
[0012]
The operation of the image recording apparatus configured as described above will be described with reference to FIGS. In FIG. 2, continuous moving image information is input to an image data input terminal 101 from a video camera or the like. When the photographer records a moving image, the data is alternately stored in the image memory FMa103 and the image memory FMb104 via the switch SWa102, and the blocks are rearranged to read the data. At this time, all successive frames are taken into the memory and read out. The data selected and read by the switch SWb105 is compressed by the encoding circuit 106, and the data is alternately stored in the image memory FMc108 and the image memory FMd109 via the switch SWc107 so that the block rearrangement is restored. Rearrange. When a moving image is recorded, data is selected by the switch SWd110, recorded by the recording processing circuit 111, and recorded on the recording medium 112 in the order of input frames.
[0013]
When the still image shooting switch 113 is operated during recording of moving image information, the control circuit 114 sends a command of a sequence different from that when recording a moving image to the switches and the memory. FIG. 3 shows, for example, No. The frame No. of data recorded in each image memory when 3 frames are inserted and recorded as still image information for 5 frames is shown. No. After capturing the frame of No. 3, 5, no. 7, no. 9, no. 11 and intermittent capture. In FIG. 3, the arrow indicates the movement of data. 4, no. 6, no. An operation may be performed in which 8 is taken in and no subsequent processing is performed. By performing writing and reading of the image memory FMa103 and the image memory FMb104 and writing of the image memory FMc108 and the image memory FMd109 intermittently, no image memory is added. No. 3 is the moving image information after recording the still image information for 5 frames. 5, no. 7, no. 9, no. No. 11 of the conventional example. No. 3 suddenly No. The playback image becomes smoother during playback than when 8 is recorded.
[0014]
According to the present embodiment, a moving image signal is digitally recorded on a recording medium, and one screen in a continuous screen of recorded moving image information is recorded N times continuously as still image information. In the image signal recording apparatus constructed as described above, the moving image after taking in the still image information is intermittently written to or read from the memory, and is intermittent for a predetermined period after N consecutive recordings of the still image information. By recording the moving image information on the recording medium, it is possible to reduce disturbance in the continuity of the screen during reproduction.
[0015]
【The invention's effect】
As described above, according to the present invention, in the case where one screen in a continuous screen of moving image signals is repeatedly recorded as a still image signal, the moving image after taking in the still image signal is recorded as a still image signal. Since the recording is intermittently performed after the recording, the disturbance of the continuity of the screen during reproduction can be reduced without adding an image memory.
[Brief description of the drawings]
FIG. 1 is a configuration diagram for explaining the principle of the present invention.
FIG. 2 is a block diagram showing an embodiment of the present invention.
FIG. 3 is a configuration diagram showing the operation of the exemplary embodiment of the present invention.
FIG. 4 is a configuration diagram illustrating a recording state of a conventional moving image and still image.
[Explanation of symbols]
102, 105, 107, 110 Switch 103, 104, 108, 109 Image memory 106 Coding circuit 111 Recording processing circuit 112 Recording medium 113 Still image shooting switch 114 Control circuit

Claims (6)

A process of recording a moving image signal input as a continuous image signal every predetermined period on a recording medium, and one image signal designated from the continuous image signal during recording of the moving image signal is a still image Recording processing means for performing processing for recording on the recording medium repeatedly as a signal for a plurality of the predetermined periods;
Image holding means for intermittently extracting and holding an image signal from a moving image signal input while repeatedly recording the still image signal;
After the recording of the still image signal, the recording processing unit performs a recording operation so that the intermittent moving image signal read from the image holding unit is recorded and then the continuously input moving image signal is recorded. An image recording apparatus comprising control means for controlling. A process of recording a moving image signal input as a continuous image signal every predetermined period on a recording medium, and one image signal designated from the continuous image signal during recording of the moving image signal is a still image Recording processing means for performing processing for recording on the recording medium repeatedly as a signal for a plurality of the predetermined periods;
Image holding means for holding a moving image signal input while repeatedly recording the still image signal;
After the recording of the still image signal, the intermittent moving image signal is recorded using the moving image signal held in the image holding means, and then the continuously input moving image signal is recorded. An image recording apparatus comprising: control means for controlling the recording operation of the recording processing means.   2. The image recording apparatus according to claim 1, wherein the image holding means intermittently extracts and holds an image signal from a plurality of continuous predetermined periods after the recording of the still image signal is completed.   3. The image recording apparatus according to claim 2, wherein the image holding means also holds a plurality of continuous image signals for a predetermined period after the recording of the still image signal is completed.   3. The image recording apparatus according to claim 1, wherein the image holding unit divides the image signal into blocks and rearranges the divided blocks.   3. The image recording apparatus according to claim 1, wherein the image signal handled by the image holding means and the recording processing means is compressed and encoded image data.

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