GB2264609B - An apparatus and method for compressing still images - Google Patents

An apparatus and method for compressing still images

Info

Publication number: GB2264609B
Authority: GB; United Kingdom
Prior art keywords: still images; compressing still; compressing; images; still
Prior art date: 1992-02-28
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.): Expired - Fee Related

Application number

GB9304142A

Other versions

GB9304142D0 (en

GB2264609A (en

Inventor

Martin P Boliek

James D Allen

Steven Michael Blonstein

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Ricoh Co Ltd

Original Assignee

Ricoh 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.)

1992-02-28

Filing date

1993-03-01

Publication date

1996-01-10

1993-03-01 Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd

1993-04-14 Publication of GB9304142D0 publication Critical patent/GB9304142D0/en

1993-09-01 Publication of GB2264609A publication Critical patent/GB2264609A/en

1996-01-10 Application granted granted Critical

1996-01-10 Publication of GB2264609B publication Critical patent/GB2264609B/en

2013-03-01 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Classifications

- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
- G06F17/147—Discrete orthonormal transforms, e.g. discrete cosine transform, discrete sine transform, and variations therefrom, e.g. modified discrete cosine transform, integer transforms approximating the discrete cosine transform
- 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
- H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
- 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
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- 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

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Mathematical Physics (AREA)
Data Mining & Analysis (AREA)
Mathematical Optimization (AREA)
Mathematical Analysis (AREA)
Pure & Applied Mathematics (AREA)
Computational Mathematics (AREA)
Signal Processing (AREA)
Multimedia (AREA)
Theoretical Computer Science (AREA)
General Engineering & Computer Science (AREA)
Software Systems (AREA)
Databases & Information Systems (AREA)
Discrete Mathematics (AREA)
Algebra (AREA)
Compression Or Coding Systems Of Tv Signals (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)
Compression Of Band Width Or Redundancy In Fax (AREA)
Complex Calculations (AREA)
Image Processing (AREA)

GB9304142A 1992-02-28 1993-03-01 An apparatus and method for compressing still images Expired - Fee Related GB2264609B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US84376592A	1992-02-28	1992-02-28

Publications (3)

Publication Number	Publication Date
GB9304142D0 GB9304142D0 (en)	1993-04-14
GB2264609A GB2264609A (en)	1993-09-01
GB2264609B true GB2264609B (en)	1996-01-10

Family

ID=25290953

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB9304142A Expired - Fee Related GB2264609B (en)	1992-02-28	1993-03-01	An apparatus and method for compressing still images

Country Status (3)

Country	Link
JP (1)	JP3155383B2 (en)
DE (1)	DE4306010C2 (en)
GB (1)	GB2264609B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP3971135B2 (en) *	2001-07-11	2007-09-05	株式会社テクノマセマティカル	DCT matrix decomposition method and DCT apparatus
US7123655B2 (en)	2001-08-09	2006-10-17	Sharp Laboratories Of America, Inc.	Method for reduced bit-depth quantization
JP4507265B2 (en)	2008-06-30	2010-07-21	ルネサスエレクトロニクス株式会社	Image processing circuit, and display panel driver and display device having the same
WO2010091930A2 (en) *	2009-02-12	2010-08-19	Zoran (France)	Frame buffer compression for video processing devices

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5129015A (en) *	1990-04-19	1992-07-07	Ricoh Company Ltd.	Apparatus and method for compressing still images without multiplication
GB2253113A (en) *	1991-01-02	1992-08-26	Ricoh Kk	Rounding numbers in quantization method used for image compression
GB2259215A (en) *	1991-08-09	1993-03-03	Ricoh Kk	An apparatus and method for compressing still images
GB2259824A (en) *	1991-09-19	1993-03-24	Sony Broadcast & Communication	Image data compression with dynamically controlled quantiser

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5021891A (en) *	1990-02-27	1991-06-04	Qualcomm, Inc.	Adaptive block size image compression method and system
US5305399A (en) *	1990-04-19	1994-04-19	Ricoh Corporation	Two dimensional shift-array for use in image compression VLSI

1993
- 1993-02-24 JP JP03381393A patent/JP3155383B2/en not_active Expired - Fee Related
- 1993-02-26 DE DE19934306010 patent/DE4306010C2/en not_active Expired - Fee Related
- 1993-03-01 GB GB9304142A patent/GB2264609B/en not_active Expired - Fee Related

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5129015A (en) *	1990-04-19	1992-07-07	Ricoh Company Ltd.	Apparatus and method for compressing still images without multiplication
GB2253113A (en) *	1991-01-02	1992-08-26	Ricoh Kk	Rounding numbers in quantization method used for image compression
GB2259215A (en) *	1991-08-09	1993-03-03	Ricoh Kk	An apparatus and method for compressing still images
GB2259824A (en) *	1991-09-19	1993-03-24	Sony Broadcast & Communication	Image data compression with dynamically controlled quantiser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RK Richards, "Arithmetic operations in digital computers, D van Nostrand Co, 1955. See pp 20 to 21. *

Also Published As

Publication number	Publication date
JP3155383B2 (en)	2001-04-09
GB9304142D0 (en)	1993-04-14
DE4306010A1 (en)	1993-09-23
DE4306010C2 (en)	1997-11-06
JPH0646269A (en)	1994-02-18
GB2264609A (en)	1993-09-01

Publication	Publication Date	Title
GB2259215B (en)	1995-05-17	An apparatus and method for compressing still images
EP0770246A4 (en)	1998-01-14	Method and apparatus for compressing images
IL98249A0 (en)	1992-06-21	Method and apparatus for coding an image
EP0590884A3 (en)	1994-07-20	Image forming method and apparatus
GB2257525B (en)	1995-11-22	Imaging method and apparatus
IL97017A0 (en)	1992-03-29	Method and apparatus for representing an image
EP0589131A3 (en)	1994-08-24	Image forming apparatus and image forming method
GB2267147B (en)	1996-07-17	Method and apparatus for examining an object
EP0725363A3 (en)	1997-07-30	Image compression apparatus and method
GB9319619D0 (en)	1993-11-10	Imaging apparatus and method
AU3224693A (en)	1993-07-19	Method and apparatus for compression of images
EP0691629A3 (en)	1997-01-15	Method and apparatus for rendering images
EP0562787A3 (en)	1994-06-08	Image coding method and apparatus
EP0535992A3 (en)	1993-12-01	Method and apparatus for image enhancement
EP0555048A3 (en)	1993-11-10	Image processing apparatus and method therefor
GB9223259D0 (en)	1992-12-23	Method and apparatus for image analysis
EP0586219A3 (en)	1994-06-08	Apparatus and method for image compression
EP0568358A3 (en)	1994-05-18	Method and apparatus for filling an image
EP0410739A3 (en)	1992-06-03	Method and apparatus for compressing halftone image data
EP0589702A3 (en)	1994-09-07	Image processing method and apparatus
EP0551012A3 (en)	1993-09-01	Image processing method and apparatus therefor
EP0444813A3 (en)	1992-03-11	Apparatus and method for forming an image
EP0583107A3 (en)	1994-05-18	Image processing method and apparatus
GB2264609B (en)	1996-01-10	An apparatus and method for compressing still images
HK1011751A1 (en)	1999-07-16	Image forming apparatus and image forming method

Legal Events

Date	Code	Title	Description
2008-11-26	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 20080301