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Digital camera, storage medium and image processing device

A technology of a digital camera and a processing device, applied in the field of digital cameras, can solve problems such as a decrease in processing speed and the inability to perform next shooting immediately, etc.

Inactive Publication Date: 2007-03-07
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, as described above, if the operating frequency in the shooting standby state is reduced, the processing speed will decrease until the writing of image data to the recording medium is completed.
Therefore, if continuous shooting is performed, the previous images are sequentially accumulated in the buffer memory, and finally the next shooting cannot be performed immediately.

Method used

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  • Digital camera, storage medium and image processing device
  • Digital camera, storage medium and image processing device
  • Digital camera, storage medium and image processing device

Examples

Experimental program
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Effect test

Embodiment 1

[0035] An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 is a block diagram showing a schematic electrical configuration of a digital camera 1 common to each embodiment having general functions such as AE (automatic exposure control), AWB (automatic white balance control), and AF (automatic focus control).

[0036] The digital camera 1 is composed of the following units centering on a CPU 2 that controls the overall system. In the figure, a lens block (block) 3 is a part of a drive mechanism of an optical system including a telescopic zoom lens and a focus lens, and a motor driver 5 for controlling the driving of the drive source, that is, a motor 4, is connected to the CPU 2 via a bus 6. . In addition, the motor driver 5 drives the motor 4 according to the control signal from the CPU 2 to control the movement corresponding to the change of the zoom factor of the optical system, the repeated operation from the camera...

Embodiment 2

[0073] Next, Embodiment 2 of the present invention will be described. In the present embodiment, in the digital camera 1 described above, the CPU 2 executes the REC main task (T3) and the REC management task (T4) with contents different from those in the first embodiment along with the setting of the REC mode. The unit, the setting unit, the threshold value changing unit, and the remaining power detection unit operate. If the difference from Embodiment 1 is first described, then in Embodiment 1, when the image buffer is used, that is, when JPEG data that has not been recorded to the external memory 15 is slightly left in the image buffer, high-speed operation must be performed, but In this embodiment, not only the presence or absence of the image buffer is used, but also the operating frequency is switched between high speed and low speed according to the usage (or free capacity). The specific processing contents of the CPU2 will be described below.

[0074] Fig. 7 is a prog...

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Abstract

The photo image data is temporarily stored in the image buffer after taking a photo, then the data is stored in the recording media, therefore making the continuous shooting possible in a shorter interval. The operating frequency of CPU which controls the digital camera is set in a first operating frequency when the image buffer is in use and a second operating frequency lower than the first frequency is set when the image buffer is idle. The image buffer is provided to store continuously shooting images even without a necessary content. The power consumption is reduced by switching the other action speed into a lower one which is still running when the image buffer is going to stop.

Description

technical field [0001] The present invention relates to a digital camera that records an image obtained by shooting as image data, a storage medium that stores an operating frequency setting program, and an image processing device. Background technique [0002] Conventionally, in a digital camera, the image data acquired at the time of shooting is temporarily stored in a buffer memory, and when the image data temporarily stored in the buffer memory reaches a predetermined unit, each image data of the predetermined unit is specified. The image data in JPEG format (JPEG data) is converted into the buffer memory by compression processing, and transferred to a recording medium such as a memory card for writing. Then, the JPEG data temporarily stored in the buffer memory is deleted from the buffer memory or allowed to be overwritten to the buffer memory upon transfer to the recording medium or completion of writing processing. [0003] In addition, it is also known that when suf...

Claims

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Application Information

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IPC IPC(8): H04N5/225H04N5/232H04N5/76H04N1/21
CPCG11B20/10527G11B2020/10712
Inventor 细田润
Owner CASIO COMPUTER CO LTD
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