KR100261596B1 - Miniature card digital still camera - Google Patents

Abstract

PURPOSE: A digital still camera using a miniature card is provided to enable the digital still camera to store large volume of data as well as to provide improved portability by using a miniature card as a memory. CONSTITUTION: The digital still camera using the miniature card includes a camera(10), a signal processor(20), a central processing unit(70), a miniature card(110), and a miniature card controller(90). The camera tapes an object and outputs corresponding signal. The signal processor receives the signal output from the camera and outputs corresponding image signal. The central processing unit outputs commands to control compression as well as restoring of the image signal. The miniature card includes 60 signal pins and 2 power lines so as to be physically coupled with a connector and a plurality of NOR flash memories and stores the compressed image data under the commands of the central processor. The miniature card controller controls the miniature card with response to the central processor. The digital still camera further includes a select switch(80) which selects the reproduction or erasure of the data stored in the miniature card.

Description

Digital still camera using miniature card {MINIATURE CARD DIGITAL STILL CAMERA}

The present invention relates to a digital still camera using a miniature card, and to a digital still camera using a miniature card for storing image data photographed using the miniature card.

In general, a digital still camera records the captured image as an electrical signal on a memory card.

Therefore, a memory device for storing images captured by a conventional digital still camera includes a personal computer memory card international association (pcmcia type II) developed as a personal computer. Was used.

However, the PCM IC card has a large size, a high price, a large burden for the user to purchase, and it is difficult to miniaturize a digital camera.

Therefore, an object of the present invention is to solve the above-mentioned disadvantages, and by using a miniature card as a memory card of a digital camera, it is possible to provide a digital still camera using a miniature card that can be easily used and portable while storing a large amount of data. can do.

1 is a block diagram of a digital still camera using a miniature card according to an embodiment of the present invention.

As a means for achieving the above object, the configuration of the present invention,

Imaging means for imaging an object and outputting a corresponding signal;

Signal processing means for outputting a video signal corresponding to the signal output from the imaging means;

Central processing means for outputting a corresponding command for controlling the compression and decompression operation of the video signal;

A miniature card means comprising a signal line 60 pins and two power lines so as to be physically connected to the connector, and comprising a plurality of NOR-type flash memories and storing compressed image data according to a command of the central processing means;

And miniature card control means for controlling the miniature card means by the central processing means.

By the above configuration, the most preferred embodiment that can be easily implemented by those skilled in the art to which the present invention pertains will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a digital still camera block using a miniature card according to an embodiment of the present invention.

As shown in FIG. 1, a digital still camera configuration using a miniature card according to an embodiment of the present invention is provided.

A lens 5 for condensing light corresponding to a subject,

An image capturing unit 15 including a charge coupled device (CCD) 10 for converting an image passing through the lens 5 into an electrical signal and sequentially outputting the corresponding signal at intervals of 1/60 second;

Corelated double sampling (CDS) 20 which extracts a pure analog signal from the signal output from the CD 10 and excludes a driving clock signal;

An analog to digital converter (ADC) 30 for converting the analog signal into a digital signal;

A signal processor 25 comprising a digital camera processor (DCP) 40 for processing the converted digital signal and outputting a digital color difference signal and a luminance signal;

A memory controller 50 which stores the signal output from the recipe in the memory 60 and controls the same;

A central processing unit 70 for compressing and restoring an image signal stored in the memory 60 and performing a command for processing an input / output operation of data if the image signal is stored in a data format;

Miniature card 110 for storing the compressed image data through the central processing unit 70,

Miniature card control unit 90 for controlling the input and output of the image data between the miniature card 110 and the central processing unit 70 by the command of the central processing unit 70,

A selection switch unit 80 for the central processing unit 70 to select a play and erase function by a user's switch selection;

When the miniature card 110 is mounted and detached to the miniature card control unit 90, signal lines are processed, and the connector 100 includes two 60-pin signal lines and two power lines connected to the miniature card 110. Is done.

The memory controller 50,

It consists of a device for changing the data path and setting the input and output directions between the DC 40, the central processing unit 70, and the memory 60, and for generating an appropriate address in the memory 60.

The operation of the digital still camera using the miniature card according to the embodiment of the present invention by the above configuration is as follows.

The image of the subject to be photographed is converted into an electrical signal from the CD 10 through the lens 5, and the corresponding signals are sequentially output at regular intervals of 1/60 second or less.

Among the signals output from the CD 10, the pure CD 10 analog signal except for the driving clock signal is extracted from the CD 20.

The analog signal is converted into a digital signal in the ADC 30, the digitally converted signal is output is separated into a color difference signal and a luminance signal in the DC 40, the output signal to the memory controller 50 Is stored in the memory (60).

The central processing unit 70 receives and compresses the image data stored in the memory 60 through the memory controller 50, and the image data compressed by the central processing unit 70 is input to the miniature control unit 90. The controller 90 transmits the image data compressed to the miniature card 110 having a large number of NOR-type flash memories through the connector 100 connected to the signal line 60 pins and two power lines to an address applied from the central processing unit 70. Accordingly, the image data compressed in the miniature card 110 is stored by the signal input from the miniature card 110 according to the address applied from the central processing unit 70.

When the user selects the playback switch of the selection switch unit 80 when the user wants to play the video data stored in the miniature card 110 through the video, the central processing unit 70 receives the playback switch on signal and plays back. It works.

When the user selects the image data to be played back from the image data stored in the miniature card 110, an address and data of the selected image data are operated without a playback command of a separate central processing unit 70. The central processing unit 70 outputs the miniature card 110 through the connector 100 to the miniature card control unit 90 in units of).

In the image data output to the miniature card controller 90, the image data compressed by the central processing unit 70 is extended.

The image data extended by the central processing unit 70 is output to the memory controller 50 and then stored in the memory 60.

When the image of one frame is completely stored in the memory 60, the image is inputted to the encoder of the DC 40 through the memory control channel 50, and output to the video to reproduce the image data.

When the user selects and erases the image data stored in the miniature card 110, the user selects the image data stored in the miniature card 110 through the erase function of the selection switch 80. 70 performs an erase operation.

When the user selects the image data to be erased from the image data stored in the miniature card 110, the image data stored in the miniature card 110 in units of 64 kilobytes through the address of the selected image data is the central processing unit 70. Are erased at once.

Therefore, the effects of the present invention operating as described above can reduce the size of the digital camera by using a miniature card, store a large amount of image data, purchase a miniature card at a low price, and because of the small size, the digital still camera By miniaturization, it is possible to provide a digital still camera using a miniature card, which is portable and easy to use.

Claims (3)

Imaging means for imaging an object and outputting a corresponding signal; Signal processing means for outputting a video signal corresponding to the signal output from the imaging means; Central processing means for outputting a corresponding command for controlling the compression and decompression operation of the video signal; A miniature card means comprising a signal line 60 pins and two power lines so as to be physically connected to the connector, and comprising a plurality of NOR-type flash memories and storing compressed image data according to a command of the central processing means; A digital still camera using a miniature card comprising miniature card control means for controlling the miniature card means by the central processing means. The digital still camera using a miniature card according to claim 1, further comprising a selection switch means for selecting a function of reproducing and erasing data stored in the miniature card in the central processing means. The method of claim 1, wherein the central processing means, If the selection operation is selected by the selection switch, the control signal is output so that data is reproduced in bytes at the corresponding address of the miniature card; Digital still camera using a miniature card that outputs the control signal.