JPH02248180A - Picture information coding device - Google Patents

Picture information coding device

Info

Publication number
JPH02248180A
JPH02248180A JP6760989A JP6760989A JPH02248180A JP H02248180 A JPH02248180 A JP H02248180A JP 6760989 A JP6760989 A JP 6760989A JP 6760989 A JP6760989 A JP 6760989A JP H02248180 A JPH02248180 A JP H02248180A
Authority
JP
Japan
Prior art keywords
information
table
picture
quantity
coding
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP6760989A
Inventor
Yoshiharu Kamiya
Minoru Sasaki
Yuriko Tsukahara
Toshiaki Watanabe
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP6760989A priority Critical patent/JPH02248180A/en
Publication of JPH02248180A publication Critical patent/JPH02248180A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To easily attain the efficient coding of picture information by setting automatically proper coding mode in response to the activity of an input picture or information quantity.
CONSTITUTION: An information quantity calculation circuit 1 calculates the information quantity of picture information or activity from an input terminal (a). Then a coded mode table 2 based on the information quantity or the like outputs the efficient mode information and a data with a quantized width whose picture quality deterioration is not visually remarkable. A quantizer 5 quantizes the picture information from a frame memory 4 with a quantized width from the table 2 and outputs the result to an output terminal (b) via a variable length coding circuit 3. Thus, when the information quantity calculated by the circuit 1 is too much, the coding mode is selected from the table 2 so as to reduce it and when the information quantity is less, the coding mode is selected from the table so as to increase the quantity. Thus, easily efficient coding is attained.
COPYRIGHT: (C)1990,JPO&Japio
JP6760989A 1989-03-22 1989-03-22 Picture information coding device Pending JPH02248180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6760989A JPH02248180A (en) 1989-03-22 1989-03-22 Picture information coding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6760989A JPH02248180A (en) 1989-03-22 1989-03-22 Picture information coding device

Publications (1)

Publication Number Publication Date
JPH02248180A true JPH02248180A (en) 1990-10-03

Family

ID=13349851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6760989A Pending JPH02248180A (en) 1989-03-22 1989-03-22 Picture information coding device

Country Status (1)

Country Link
JP (1) JPH02248180A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06225286A (en) * 1992-10-26 1994-08-12 Daewoo Electron Co Ltd Method and device for adaptive variable-length encoding
EP0763925A3 (en) * 1990-12-28 1998-03-04 Canon Kabushiki Kaisha Image processing apparatus
US6044115A (en) * 1996-12-13 2000-03-28 Matsushita Electric Industrial Co., Ltd. Method and apparatus for coding and decoding digital image data using image quantization modification
JP2002535936A (en) * 1999-01-21 2002-10-22 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Method and apparatus for encoding a video image

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0763925A3 (en) * 1990-12-28 1998-03-04 Canon Kabushiki Kaisha Image processing apparatus
US5838826A (en) * 1990-12-28 1998-11-17 Canon Kabushiki Kaisha Image processing apparatus and method using plural amounts corresponding to encoded data to control encoding
JPH06225286A (en) * 1992-10-26 1994-08-12 Daewoo Electron Co Ltd Method and device for adaptive variable-length encoding
US6044115A (en) * 1996-12-13 2000-03-28 Matsushita Electric Industrial Co., Ltd. Method and apparatus for coding and decoding digital image data using image quantization modification
JP2002535936A (en) * 1999-01-21 2002-10-22 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Method and apparatus for encoding a video image

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