JP2002165174A - Image-reproducing apparatus and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To store images desired from among moving images into a memory card as a static image. SOLUTION: In a moving image reproducing mode, moving image data stored in the memory card are read out to execute moving image reproducing (step 21). While reproducing the moving images, if a shutter release button is pressed ('YES') in step 25), the image data expressing images displayed at the depressing of the button is stored into the card as the static image data (step 26), so that when redisplaying the still image, it is not necessary to re-search the static image from among the moving images to reproducing them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an image reproducing apparatus and a control method thereof.

[0002]

BACKGROUND OF THE INVENTION When moving picture data is recorded on a digital recording medium, moving picture data can be displayed by reading and reproducing the moving picture data from the digital recording medium. A moving image is a moving image that is displayed by periodically (for example, every 1/30 second) displaying a still image of one frame per frame. When the pause button of the playback device is pressed, the moving image temporarily stops, and a still image is displayed on the display screen.

When the pause button is pressed again, the reproduction of the moving image starts again. In order to display the paused still image again, the moving image must be reproduced from the beginning, and a desired image must be found again while watching the moving image.

[0004]

DISCLOSURE OF THE INVENTION An object of the present invention is to make it easy to find a desired still image from a moving image.

[0005] An image reproducing apparatus according to the present invention comprises: reading means for reading moving image data recorded on a digital recording medium; reproducing means for reproducing moving image data read by the reading means; and moving image data reproduced by the reproducing means. Display control means for controlling the display device to display the moving image represented by the image on the display screen, first input means for inputting a still image recording command, and a still image recording command from the first input means. Recording control means for recording, on the digital recording medium, data for specifying the image displayed on the display screen when the image data is displayed.

[0006] The present invention also provides a method suitable for the above apparatus. That is, in this method, moving image data recorded on a digital recording medium is read at regular intervals, the read moving image data is reproduced, and a moving image represented by the reproduced moving image data is displayed on a display screen. In response to the input of the still image recording command, the apparatus controls the apparatus and records, on the digital recording medium, data specifying the image displayed on the display screen when the still image recording command is given. .

According to the present invention, moving picture data recorded on a digital recording medium is read and reproduced.
A moving image represented by the reproduced moving image data is displayed on the display screen. When a still image recording command is given, data specifying the image displayed on the display screen (the image data itself representing the image displayed on the display screen, the frame number of the image, It is sufficient that the image can be specified, such as the elapsed time from the start of reproduction of the digital image).

[0008] Since data for specifying an image is recorded on the digital recording medium in response to a still image recording command, it is possible to know which image has been designated as a still image by the user by reading the specific data. later,
The specified still image can be found relatively easily.

Preferably, the movement of the moving image displayed on the display screen is delayed by the second input means for inputting the slow reproduction command and the slow reproduction command input from the second input means. And a means for controlling the display control means.

When a slow reproduction command is input,
Since the moving image displayed on the display screen is delayed, the designation of a still image is relatively easy.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention and is a block diagram showing an electrical configuration of a digital camera having a reproducing function.

The operation of the digital camera is controlled by a computer 12.

The digital camera includes a power switch 10 for turning on and off the power. A signal indicating a power on / off command from the power switch 10 is given to the computer 12.

The digital camera includes a key group 11 for setting various modes and the like. This key group 11
Includes the setting of the video recording mode, the setting of the still image recording mode, the setting of the video playback mode, the setting of the video slow playback mode, the setting of the still image playback mode, the setting of the frame advance, the setting of the pause of the playback, the setting of the still image Includes various keys for setting recording selection command, shutter release button, frame feed switch, frame selection switch for still image playback, video selection switch for selecting video data for video playback, etc. Have been.

When the still image recording mode is set, a subject image is formed on the light receiving surface of the CCD 2 by the imaging lens 1. A video signal representing a subject image is output from the CCD 2 at a period of 1/30 second, and is converted into digital image data in the analog / digital conversion circuit 3. The digital image data is adjusted by the signal processing circuit 4 for white balance adjustment.
Predetermined signal processing such as gamma correction is performed.

The image data output from the signal processing circuit 4 is encoded in an encoder 5 and supplied to a digital / analog conversion circuit 6. In the digital / analog conversion circuit 6, the signal is returned to an analog video signal. By supplying the analog video signal to the display device 7, a subject image is displayed on the display screen of the display device 7 as a moving image.

In the still image recording mode, when the shutter release button is pressed, the image data output from the signal processing circuit 4 is temporarily stored in the buffer memory 9 via the memory interface 8. The image data is read from the buffer memory 9 and stored in the memory
Interface 8, signal processing circuit 4, computer 12
The data is supplied to the memory card 14 via the card interface 13 and recorded.

When the moving image recording mode is set, image data periodically output from the signal processing circuit 4 while the moving image recording mode is set is transmitted to the memory card 14 via the computer 12 and the card interface 13. Will be recorded.

When the moving image reproduction mode is set, a moving image to be reproduced is selected. The moving image data representing the selected moving image is read from the moving image data recorded on the memory card 14, and is read by the card interface 13, the computer 12, the signal processing circuit 4, the encoder 5, and the digital / analog conversion circuit 6. To the display device 7 via the The moving image represented by the moving image data recorded on the memory card 14 is displayed on the display screen of the display device 7.

When the still image reproduction mode is set, a still image to be reproduced is selected. The still image data selected from the still image data recorded on the memory card 14 is read and stored in the buffer memory 9 via the card interface 13, the computer 12, the signal processing circuit 4, and the memory interface 8. Given and temporarily stored. Still image data is read from the buffer memory 9 and applied to the display device 7 via the memory card interface 8, the signal processing circuit 4, the encoder 5, and the digital / analog signal processing circuit 6. The selected still image is displayed on the display screen of the display device 7.

FIG. 2 shows the structure of the memory card 14.

The memory card 14 has a header recording area,
A moving image recording area and a still image recording area are included.

In the header recording area, management data of the memory card 12 is recorded. Moving image data is recorded in the moving image recording area. Still image data is recorded in the still image recording area.

FIG. 3 is a flowchart showing a processing procedure of the digital camera when the moving image reproduction mode is set.

The digital camera according to this embodiment is
When the shutter release button is pressed while a moving image is being played back in the moving image playback mode, image data representing an image displayed on the display device 7 when the shutter release button is pressed is displayed as still image data. In the still image recording area of the memory card 14. A desired scene from a moving image can be recorded on the memory card 14 as a still image. The details will become clear from the following description.

When the video playback mode is set, video data is read from the memory card 14 as described above,
A moving image is displayed on the display screen of the display device 7 (step
twenty one).

When slow reproduction is set (YES in step 22), a moving image is displayed on the display screen of the display device 7 in slow reproduction slower than normal moving image reproduction (step 23).
If the pause button is pressed during slow playback (step
24, YES), and the image data representing the image is buffered.
It is provided to the memory 9 and stored temporarily. buffer·
The image data stored in the memory 9 is read and provided to the display device 7 as described above. When the pause button is pressed, the image displayed on the display screen is statically displayed.

The user looks at the image displayed on the display screen at rest and stores image data representing the image in the memory.
To record on the card 14, press the shutter release button. When the shutter release button is pressed (YES in step 25), the image data displayed on the display screen is given to the memory card 14 and recorded in the still image recording area of the memory card 14 (step 26). ).

Since the still image data representing the desired still image selected from the moving images is recorded in the still image recording area of the memory card 14, the desired still image is reproduced by reading the still image data. can do. When searching for a desired still image, there is no need to reproduce the moving image again.

Even if the pause button is pressed (step 24)
If the shutter release button is not pressed (NO in step 25), it is determined whether or not there is a frame feed command (step 27). If there is a frame feed command (YES in step 27), the mode is switched from slow reproduction to frame feed reproduction (step 28).

Even during frame-by-frame playback, the pause button is pressed (YES in step 24),
When the shutter release button is pressed (YES in step 25), the image data representing the image displayed on the display screen of the display device 7 when the shutter release button is pressed is stored as still image data.・ Card 14
(Step 26).

In the above-described embodiment, the image data representing the image when the pause button and the shutter release button are depressed during the slow playback is taken as the still image data, Although it is recorded in the recording area, it is displayed on the display device 7 in response to the pressing of the pause button and the shutter release button during normal moving image reproduction regardless of whether or not there is slow reproduction. Image data representing an image may be recorded as still image data in the still image recording area of the memory card 14. In addition, even if the shutter release button is not pressed after pressing the pause button, the display device 7 responds simply to the pressing of the shutter release button.
May be recorded on the memory card 14 as still image data.

Further, even when the shutter release button is not used, image data representing an image displayed on the display device 7 is recorded on the memory card 14 as still image data in response to pressing of another button or the like. It may be.

Further, in the above-described embodiment, the image data representing the selected image is recorded on the memory card 14, but the image data itself is not recorded on the memory card 14 and the selected image is specified. Data that can be used, such as frame numbers, time data, and count values, are stored in the memory card 14.
May be recorded. By specifying the specific data, the image data representing the image specified by the specific data is read out from the moving image data recorded in the moving image recording area and played back, so that the selected image can be found. become able to.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of a digital camera.

FIG. 2 shows the structure of a memory card.

FIG. 3 is a flowchart illustrating a processing procedure in a moving image playback mode of the digital camera.

[Explanation of symbols]

 7 Display 9 Buffer memory 11 Key group 12 Computer 13 Card interface 14 Memory card

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Claims (3)

[Claims] 1. A reading unit for reading moving image data recorded on a digital recording medium, a reproducing unit for reproducing the moving image data read by the reading unit, and a moving image represented by the moving image data reproduced by the reproducing unit. Display control means for controlling a display device to be displayed on a display screen, first input means for inputting a still image recording command, and the display screen when a still image recording command is given from the first input means An image reproducing apparatus comprising: recording control means for recording data specifying an image displayed on the digital recording medium. A second input means for inputting a slow reproduction command, and a motion of a moving image displayed on the display screen being slowed by the input of the slow reproduction command from the second input means. 2. The image reproducing apparatus according to claim 1, further comprising: means for controlling said display control means. 3. A display device for reading moving image data recorded on a digital recording medium at a constant period, reproducing the read moving image data, and displaying a moving image represented by the reproduced moving image data on a display screen. An image reproducing apparatus for recording, on a digital recording medium, data specifying an image displayed on the display screen when a still image recording command is given in response to an input of a still image recording command Control method.