KR100215308B1 - Digital still camera using progressive ccd - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital still camera, comprising: a progressive CD unit for converting a light signal through a lens unit into an electrical signal and a digital signal, and outputting the digital signal to a digital color image data By receiving the CD signal and the color signal processing unit and frame image data recorded in the frame data storage unit and compressing the image data into frame image storage unit and storing the image data in the image recording storage unit, the still image stored in the image recording storage unit Generates a still image compression / restoration unit for restoring image data and outputs it to the frame data storage unit, and a digital / analog converter for converting and outputting digital color image data into an analog color image signal, an image reproducing unit, and a first clock and a second clock. Progressive CD, Analog A timing generator for supplying the digital / digital converter, a CD signal and a color signal processor, a memory controller, a frame data storage unit, a still image compression / restoration unit, a digital / analog converter, and an image reproducing unit, and a control unit for controlling the whole system. Computer monitor by using a progressive CD that reads and outputs the telephone station in a non-interlaced manner, and separates the clock used when reading the image data from the progressive CD and displaying the compressed video on a television. In addition, images can be played back through a medium such as a television.

Description

Digital Still Camera with Progressive CDs

The present invention relates to a digital still camera, and more particularly, to a digital still camera using a progressive CD that reads and outputs a telephone station in a non-interlacing manner.

Hereinafter, a conventional digital still camera will be described with reference to the accompanying drawings.

1 is a block diagram of a conventional digital still camera.

As shown in FIG. 1, in the conventional digital still camera, a light signal input through the lens unit 1 is converted into an electrical signal by an interlacing charge coupled device (CCD) unit 3 and output. do.

The electrical signal output from the interlaced CD unit 3 is digitalized by the analog / digital converter 5 and input to the CD signal and the color signal processor 7, and the CD signal and the color signal processor 7 are The input digital signal is converted into digital color image data and output.

On the other hand, the lens driving and the control unit 9 is used for zoom control, iris control, focus control, etc. of the lens unit 1, the control unit 11 controls the entire system.

The digital color image data output from the CD signal and the color signal processing unit 7 is recorded in the frame memory unit 15 under the control of the memory control unit 13, and then compressed in the still image compression / restoration unit 17. It is stored in the video recording memory unit 19.

The stored image compressed data is restored by the still image compression / recovery unit 17 as necessary, recorded in the frame memory unit 15, converted into digital image data by the CD signal and color signal processing unit 7, and output. do.

The digital video data output from the CD signal and color signal processing section 7 is converted into an analog color video signal by the digital / analog converter 21 and the video reproducing section 23 and output.

In addition, digital image data is transmitted to the computer via the computer interface unit 25 in the image data stored in the image recording memory unit 19.

The timing generator 27 provides a clock required for the system, the frequency of which is until the video signal is obtained from the CD 3 and stored in the video recording memory 19 to store the compressed video data. The same is true until the color image signal is output through the image reproducing unit 23 and the multiplication of the clock used in the CD 3 is performed.

Here, using an interlaced CD (3) commonly used in camcorders, etc. to compress the image and store it in the image recording memory 19 or to reproduce the compressed image and display it on the television through the color image signal output, This is because the main media dealing with video were video equipment such as television.

In such a system, one clock is usually used because the clock used, i.e., the clock generated from the timing generator 27, uses the multiplier of the clock of the CD 3 and is used in synchronization with the clock during video reproduction. .

However, since the above-described conventional technique uses an interlaced CD 3 for continuously generating images, the color signal processor 7 processes the image data output from the CD 3 to reproduce the image. 23) It is difficult to display the color image signal output through the computer monitor through a computer monitor.

Recently, video data is increasingly used in computers. In fact, video data of an interlacing signal method suitable for a camcorder or TV is not suitable for a computer. It is increasing.

However, the image data output from the progressive CD can represent an image appropriately for a computer monitor, but there is a disadvantage in that an image cannot be represented on a television, which is a conventional image display medium.

Digital still cameras need to take pictures of subjects anywhere and use them on a computer, or display them through media such as televisions, but using progressive CDs makes it difficult to display images on televisions. .

Accordingly, an object of the present invention is to use a progressive CD that reads and outputs a telephone station in a non-interlacing manner, and separates a clock used when reading image data from a progressive CD and displaying a compressed image on a television or the like. To provide a digital still camera to use.

1 is a block diagram of a conventional digital still camera,

2 is a block diagram of a digital still camera according to an embodiment of the present invention.

As a means for achieving the above object, the present invention, the progressive means for receiving the lens means for receiving the external light and the light passing through the lens means to convert the electric signal, and output the electric signal corresponding to the telephone station Analog / digital conversion means for converting and outputting an electrical signal output from the digital means and the progressive CD means into a digital signal and a CD for converting the digital signal output from the analog / digital conversion means into digital color image data and outputting Signal and color signal processing means and lens drive control means for driving and controlling the lens means, frame data storage means for receiving digital color image data output from the CD signal and color signal processing means and recording in frame units and the frame Control of data storage means Receives image data in frame units recorded in the memory control means and the frame data storage means, compresses the image data into still image data, stores the image data in the image record storage means, and restores the still image data stored in the image record storage means. And digital / analog converting means for converting digital color image data output from the CD signal and the color signal processing means into analog color image data and outputting the still image compression / restoring means for outputting the frame data storage means. And image reproducing means for converting and outputting analog color image data output from the analog conversion means into an image color signal that can be displayed on an external medium, and for transmitting the still image data stored in the image record storage means to a computer. Compu The progressive CD means, the analog / digital converting means, the CD signal and color signal processing means, and the memory control means when storing the electrical signals output from the interface means and the progressive CD means in the video recording storage means. And providing a first clock to the frame data storage means and the still image compression / recovery means, and restoring the still image data stored in the image record storage means to output the image data through the image reproduction means. Timing generating means for generating a second clock to the converting means, the image reproducing means, the CD signal and color signal processing means, the memory control means, the frame data storage means, and the still image compression / recovery means, and the timing generation. Means and the lens drive control means and the seed It is connected to the D signal and the color signal processing means and said memory control means and the still image compression / decompression means comprises a control means for control.

Here, the timing generating means is a first clock generating unit for generating a first clock which is a multiplier of the clock used in the progressive CD and a multiplier of the clock required for an image color signal output through the image reproducing means. A second clock generator for generating two clocks and outputting them to the digital / analog converting means and the image reproducing means, and controlling the first clock to the progressive CD means and the analog / digital converting means under control of the control means; Receiving the first gate and the second clock, and outputting the first clock and the second clock to the CD signal, the color signal processing means, and the memory control means according to the control of the control means. And multiplexing means for outputting the frame data storage means and the still image compression / restore means.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a digital still camera according to an embodiment of the present invention.

As shown in FIG. 2, the digital still camera according to the embodiment of the present invention outputs a light signal through the lens unit 30 as an electrical signal, and a progressive CD unit capable of reading an electrical signal corresponding to a telephone company ( 40) and the digital signal output from the analog / digital converter 50 and the analog / digital converter 50 which converts and outputs an electrical signal output from the progressive CD unit 40 into a digital signal and converts the digital signal into digital color image data. Frames by receiving digital color image data output from the CD signal and color signal processing unit 60 and the lens driving control unit 70 and the CD signal and color signal processing unit 60 to control the driving The memory control unit 90 and the frame data storage unit 80 controlling the frame data storage unit 80 and the frame data storage unit 80 to record in units of units are stored in the unit. The frame data storage unit 80 receives the image data in the frame unit, compresses the image data into still image data, stores the image data in the image recording storage unit 100, and restores the still image data stored in the image recording storage unit 100. Digital / analog converter 120 and digital to convert digital color image data output from the still image compression / recovery unit 110 and the CD signal and color signal processing unit 60 to analog color image data to output Is stored in the image reproducing unit 130 and the image recording storage unit 100 for converting the analog color image data output from the analog converter 120 into a color image signal that can be displayed through an external medium such as a television. The computer interface unit 140 for transmitting the still image data to the computer and generating the first clock and the second clock to BCD unit 40, analog / digital converter 50, CD signal and color signal processing unit 60, memory control unit 90, frame data storage unit 80, still image compression / restore unit 110, Timing generator 150, timing generator 150, lens drive controller 70, CD signal and color signal processor 60, memory supplied to digital / analog converter 120 and image reproducing unit 130 And a control unit 160 connected to the control unit 90 and the still image compression / restore unit 110 to control the control unit 90.

The timing generator 150 according to the embodiment of the present invention includes a first clock generator 152 that generates and outputs a first clock, a first clock and a controller 160 that are output from the first clock generator 152. And a gate connected to the AND gate 154 and a second clock outputting the first clock to the progressive CD unit 40 and the analog / digital converter 50 when the signal input from the controller 160 is a high signal. Is generated from the second clock generator 156 and the first clock generator 152 and the second clock generator 156 to be output to the digital / analog converter 120 and the image reproducing unit 130. Receives a clock and a second clock and selects one of the first clock and the second clock under the control of the controller 160 to store the CD signal and the color signal processor 60, the memory controller 90, and the frame data. And a multiplexer 158 output to the unit 80 and the still image compression / restore unit 110.

With the above configuration, the operation of the digital still camera according to the embodiment of the present invention is as follows.

The light signal input through the lens unit 30 is converted into an electrical signal by the progressive CD unit 40, and the electrical signal of the CD 40 is read by the control of the controller 160 to be analog / digital. It is digitalized by the converter 50, converted into digital color image data by the CD signal and color signal processing unit 60, and output.

Meanwhile, the lens driving controller 70 is used for zoom control, iris control, focus control, and the like of the lens unit 30.

The controller 160 controls the entire system, and in particular, controls the first clock generator 152 and the second clock generator 156 to generate the first clock and the second clock.

The digital color image data output from the CD signal and the color signal processing unit 60 is stored in the frame data storage unit 80 under the control of the memory control unit 90 and then compressed by the still image compression / restore unit 110. The video recording storage unit 100 stores the compressed video signal.

As such, when the electrical signal output from the progressive CD 40 is stored in the image recording storage, that is, when photographing a subject, the clock generated by the first clock generator 152 is used.

At this time, the controller 160 outputs a high signal to the AND gate 154 so that the first clock output from the first clock generator 152 is input to the progressive CD unit 40 and the analog / digital converter 50. The electrical signal is output from the progressive CD unit 40 to be transmitted to the CD signal and the color signal processor 60.

In addition, the multiplexer 158 selects and outputs a first clock under the control of the controller 160, and the outputted first clock is the CD signal and color signal processor 60, the memory controller 90, and the frame data. The signal output from the progressive CD unit 40 is output to the storage unit 80 and the still image compression / restore unit 110 to be stored in the image record storage unit 100.

Next, when restoring the compressed video data stored in the video recording storage unit 100 and displaying it on a television or the like through the video reproducing unit 130, the second clock generated from the second clock generating unit 156 is used. do.

That is, the multiplexer 158 selects and outputs a second clock output from the second clock generator 156 under the control of the controller 160, and stores the second clock output with the memory controller 90 and frame data. The unit 80 is input to the still image compression / restore unit 110, and the second clock generator 156 directly outputs the second clock to the digital / analog converter 120 and the image reproducing unit 130 to display the image. The compressed image data stored in the recording storage unit 100 can be restored and displayed on a television or the like.

At this time, the output of the controller 160, which is input to the AND gate 154, maintains a low signal so that the first clock output from the first clock generator 152 is the CD unit 40 and the analog / digital digital signal. Do not enter the converter 50.

The first clock generated from the first clock generator 152 is a multiplier of the clock of the CD unit 40, and the second clock generated from the second clock generator 156 is a multiplier of the clock required for the television video signal. to be.

As described above, in the embodiment of the present invention, a progressive CD that reads and outputs a telephone station in a non-interlacing manner, is used when reading image data from a progressive CD and displaying a compressed image on a television or the like. By using a separate clock, it is possible to provide a digital still camera capable of playing back not only a computer monitor but also a medium such as a television.

Claims (2)

Progressive CD means for receiving an external light and light passing through the lens means and converting it into a corresponding electric signal, and outputting an electric signal corresponding to a telephone office, and an electrical signal output from the progressive CD means Drive control of the digital signal and color signal processing means and the lens means for converting the digital signal output from the analog / digital conversion means into digital color image data and converting the digital signal from the analog / digital conversion means. Frame data storage means for receiving digital color image data output from the CD signal and the color signal processing means, and recording in units of frames, memory control means for controlling the frame data storage means, and the frame data. Storage Receives image data recorded in frame units, compresses the image data into still image data, and stores the image data in the image record storage means. The still image outputs the still image data stored in the image record storage means and outputs the image to the frame data storage means. Digital / analog conversion means for converting digital color image data output from the compression / restoration means and the CD signal and color signal processing means into analog color image data and outputting the analog color image data output from the digital / analog conversion means. Image reproducing means for converting the image into a color signal that can be displayed on an external medium and outputting the data; computer interface means for transmitting the still image data stored in the image record storage means to the computer, and the progressive CD means. The progressive CD means, the analog / digital converting means, the CD signal and color signal processing means, the memory control means, the frame data storage means, and the like, when storing the electrical signal output from the video recording storage means. The digital / analog converting means and the image reproducing means when providing a first clock to the still image compressing / restoring means and restoring the still image data stored in the image recording and storing means to output the image through the image reproducing means; Timing generating means for providing a second clock to the CD signal and color signal processing means, the memory control means, the frame data storage means, and the still image compression / recovery means, the timing generating means, and the lens driving control means; The CD signal and color signal processing means and the memory control number And a control means connected to the still image compression / restoration means to control the digital still camera. The method of claim 1, wherein the timing generating means comprises a first clock generator for generating a first clock, which is a multiplier of the clock used in the progressive CD, and a clock required for an image color signal output through the video reproducing means. A second clock generator for generating a multiplier number and outputting the second clock to the digital / analog converting means and the image reproducing means, and the first clock to the progressive CD means and the analog / An AND gate means for outputting to a digital converting means, the first clock and the second clock are inputted, and the CD and color signal processing means and the first clock and the second clock are controlled by the control means. Multiplexer means for outputting to the memory control means, the frame data storage means and the still image compression / restoration means Digital still cameras included.