KR970010097B1 - Apparatus for compressing and decompressing of the image data - Google Patents

Apparatus for compressing and decompressing of the image data Download PDF

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Publication number
KR970010097B1
KR970010097B1 KR94015362A KR19940015362A KR970010097B1 KR 970010097 B1 KR970010097 B1 KR 970010097B1 KR 94015362 A KR94015362 A KR 94015362A KR 19940015362 A KR19940015362 A KR 19940015362A KR 970010097 B1 KR970010097 B1 KR 970010097B1
Authority
KR
South Korea
Prior art keywords
file
bit stream
transmitted
stream data
restoration
Prior art date
Application number
KR94015362A
Other languages
Korean (ko)
Other versions
KR960003413A (en
Inventor
Yong-Kyu Park
Original Assignee
Daewoo Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Priority to KR94015362A priority Critical patent/KR970010097B1/en
Publication of KR960003413A publication Critical patent/KR960003413A/en
Application granted granted Critical
Publication of KR970010097B1 publication Critical patent/KR970010097B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/423—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
    • H04N19/426—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements using memory downsizing methods
    • H04N19/428—Recompression, e.g. by spatial or temporal decimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

The compressor and expander are comprised of a bit stream data provided from a variable length coding part(130) is input to a recompressing part(140) to be recompressed by a file compression technique, then output, in which a first through a fourth file compressing parts of the recompressing part(140) divides the provided bit stream data in unit of a respective different file length and file compresses; an adjusting part(160) detects a compression rate from the first through the fourth file compressing parts in a predetermined period and compares and determines the respective compression rate detected; data from the selecting part(150) being stored in a buffer part(170) temporarily, then outputs continuously in a constant ratio to be transmitted to an expander; the bit stream data transmitted from the compressor is transmitted to a restoration part(220) and a first through a fourth file restoration part of the restoration part(220) divides the input data in the file length.
KR94015362A 1994-06-30 1994-06-30 Apparatus for compressing and decompressing of the image data KR970010097B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR94015362A KR970010097B1 (en) 1994-06-30 1994-06-30 Apparatus for compressing and decompressing of the image data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR94015362A KR970010097B1 (en) 1994-06-30 1994-06-30 Apparatus for compressing and decompressing of the image data

Publications (2)

Publication Number Publication Date
KR960003413A KR960003413A (en) 1996-01-26
KR970010097B1 true KR970010097B1 (en) 1997-06-21

Family

ID=19386777

Family Applications (1)

Application Number Title Priority Date Filing Date
KR94015362A KR970010097B1 (en) 1994-06-30 1994-06-30 Apparatus for compressing and decompressing of the image data

Country Status (1)

Country Link
KR (1) KR970010097B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980065823A (en) * 1997-01-15 1998-10-15 김광호 How to compress print data

Also Published As

Publication number Publication date
KR960003413A (en) 1996-01-26

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