KR930001742A - Image data compression extension device - Google Patents

Image data compression extension device Download PDF

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Publication number
KR930001742A
KR930001742A KR1019920010814A KR920010814A KR930001742A KR 930001742 A KR930001742 A KR 930001742A KR 1019920010814 A KR1019920010814 A KR 1019920010814A KR 920010814 A KR920010814 A KR 920010814A KR 930001742 A KR930001742 A KR 930001742A
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KR
South Korea
Prior art keywords
buffer memory
compression
unit
image data
image
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Application number
KR1019920010814A
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Korean (ko)
Other versions
KR950011196B1 (en
Inventor
스스무 야마모또
도시오 나까다
도시후미 나까무라
Original Assignee
미야하라 아끼라
후지제록스 가부시끼가이샤
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Publication of KR930001742A publication Critical patent/KR930001742A/en
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Publication of KR950011196B1 publication Critical patent/KR950011196B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Storing Facsimile Image Data (AREA)
  • Image Input (AREA)
  • Image Processing (AREA)

Abstract

내용 없음No content

Description

화상 데이타 압축신장장치Image data compression extension device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 화상데이타 압축신장 장치를 사용한 팩시밀리 장치.1 is a facsimile apparatus using the image data compression and expansion apparatus of the present invention.

제2도는 화상데이타 압축신장 장치의 요부확대도.2 is an enlarged view of the main part of the image data compression extension apparatus.

제3도는 버퍼메모리의 구조를 설명하는 도면.3 is a diagram for explaining the structure of a buffer memory.

제4도는 버퍼메모리의 사용과정을 설명하는 도면.4 is a diagram illustrating a process of using a buffer memory.

제5도는 버퍼메모리의 필요 용량의 산출을 설명하기 위한 도면.5 is a diagram for explaining calculation of a required capacity of a buffer memory.

제6도는 축소회로가 추가되어 있는 경우의 프린트경로를 나타낸 도면.6 is a view showing a print path when a reduction circuit is added.

제7도는 버퍼메모리와 페이지메모리를 설명하는 도면.7 is a diagram for explaining a buffer memory and a page memory.

제11도는 화상데이타 압축신장장치에 있어서의 각종 동작시에 데이타가 흐르는 경로를 나타낸 도면.Fig. 11 is a diagram showing a path through which data flows during various operations in the image data compression and expansion apparatus.

Claims (3)

연속적으로 동작하는 화상독취부 및/또는 연속적으로 동작하는 화상기록부와, 압축시장부와, 이미지 데이타의 일시적인 격납에 사용되는 버퍼메모리와, 상기 압축 신장부에 의해서 압축되어 얻은 코드 데이타를 기억하는 코드기억부를 구비하고 상기 버퍼메모리의 용량을, 코드기억부의 용량, 채용하는 부호화 방식에서의 최악 압축율, 버퍼메모리와 화상기록부 또는 화상독취부와의 사이의 데이타 전송속도에 대한 압축신장부와 버퍼메모리사이의 데이타 전송속도의 비를 기준으로 하여 정한 것을 특징으로 하는 화상데이타 압축신장장치.A code for storing a continuously reading image reading section and / or a continuously operating image recording section, a compression market section, a buffer memory used for temporarily storing image data, and code data obtained by the compression decompression section. A storage unit, the capacity of the buffer memory being the capacity of the code storage unit, the worst compression ratio in the coding scheme employed, and the compression expansion unit and the buffer memory for the data transfer rate between the buffer memory and the image recording unit or the image reading unit. An image data compression and expansion device, characterized in that determined on the basis of a ratio of data transfer rates. 연속적으로 동작하는 화상기록부와 상기 기록부의 기록동작중에 원고 1페이지 분의 이미지 데이타를 중단없이 송출할 수 있는 용량을 갖는 버퍼메모리와, 상기 버퍼메모리에 이미지 데이타를 공급하는 신장부와, 상기 신장부가 신장동작을 할때에, 신장에 가장 시간이 많이 걸리는 코드 데이타를 신장하는 경우라도, 상기 버퍼 메모리가 앰프티로 되지 않도륵 상기 버퍼 메모리를 플로되는 방향으로 제어하는 버퍼 메모리 제어회로를 갖는 화상데이타 신장장치.A buffer memory having a continuous operation of an image recording unit and a capacity to send one page of original image data without interruption during a recording operation of the recording unit, a decompression unit for supplying image data to the buffer memory, and a decompression unit In the decompression operation, even in the case of decompressing code data which takes the most time for decompression, image data having a buffer memory control circuit for controlling the buffer memory in a flow direction without causing the buffer memory to become an ampere. Stretching device. 연속적으로 동작하는 화상독취부와, 상기 화상독취부의 독취동작중에 원고 1페이지 분의 이미지 데이타를 지우지 않고 송출할 수 있는 용량을 갖는 버퍼메모리와 상기 버퍼메모리에서 이미지 데이타의 공급을 받는 압축부와 상기 압축부가 압축동작을 행할때에 압축에 가장 시간이 많이 걸리는 코드데이타를 압축하는 경우라도, 상기버퍼 메모리가 플로되지 않도록 상기 버퍼메모리를 앰프티로 되는 방향으로 제어하는 버퍼메모리 제어회로를 갖는 화상 데이타 압축장치.A buffer memory having a continuously operating image reading unit, a buffer memory having a capacity to be sent without erasing one page of original image data during a reading operation of the image reading unit, and a compression unit receiving image data from the buffer memory; An image having a buffer memory control circuit for controlling the buffer memory in the direction to be an amplifier so that the buffer memory does not flow even when the compression section compresses code data that takes the most time for compression when performing the compression operation. Data Compressor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920010814A 1991-06-22 1992-06-22 Image data compressing and decompressing apparatus KR950011196B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3177515A JPH04373261A (en) 1991-06-22 1991-06-22 Image data compressing and elongating device
JP91-177515 1991-06-22

Publications (2)

Publication Number Publication Date
KR930001742A true KR930001742A (en) 1993-01-16
KR950011196B1 KR950011196B1 (en) 1995-09-29

Family

ID=16032262

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920010814A KR950011196B1 (en) 1991-06-22 1992-06-22 Image data compressing and decompressing apparatus

Country Status (2)

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JP (1) JPH04373261A (en)
KR (1) KR950011196B1 (en)

Also Published As

Publication number Publication date
JPH04373261A (en) 1992-12-25
KR950011196B1 (en) 1995-09-29

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