JPS6462870A - Signal converting device - Google Patents

Signal converting device

Info

Publication number
JPS6462870A
JPS6462870A JP21787787A JP21787787A JPS6462870A JP S6462870 A JPS6462870 A JP S6462870A JP 21787787 A JP21787787 A JP 21787787A JP 21787787 A JP21787787 A JP 21787787A JP S6462870 A JPS6462870 A JP S6462870A
Authority
JP
Japan
Prior art keywords
code
image
sequence
code sequence
parity
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
JP21787787A
Other languages
Japanese (ja)
Inventor
Nobukazu Doi
Moriji Izumida
Seiichi Mita
Hiroyuki Haniyu
Susumu Kasai
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.)
Hitachi Denshi KK
Hitachi Ltd
Original Assignee
Hitachi Denshi KK
Hitachi 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 Hitachi Denshi KK, Hitachi Ltd filed Critical Hitachi Denshi KK
Priority to JP21787787A priority Critical patent/JPS6462870A/en
Publication of JPS6462870A publication Critical patent/JPS6462870A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To decrease a direct current component to a parity code by adding distortion to a code sequence so as to decrease the direct current component of the parity code and outputting the distorting code sequence and the parity code to correspond to the sequence. CONSTITUTION:In each image original code sequence to constitute an error correcting code, the plural number of distorting image code sequences 2ia to be different each other, to which the distortion of a fine level is added, are prepared. Then, a parity code 5ia is obtained respectively to an image original code sequence 4ia, which encodes in a weighting order an image original code sequence 20a and the distorting image code sequence 2ia and to respective image code sequences. Out of the codes, an error correcting code 4ia+5ia, in which the image code sequence and the direct current component of the parity code go to be minimum, is selected, transmitted and recorded. The distorting quantity to add to the image original code sequence is enough at a minimum level to obtain different code strings after the encoding in weighting order. Then, the quantity is 1 level in the code in weighting order and a picture element, to which the distortion is added, is one picture element enough in the image original code sequence. Thus, the direct current component of a parity signal can be decreased without the degradation of image quality.
JP21787787A 1987-09-02 1987-09-02 Signal converting device Pending JPS6462870A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21787787A JPS6462870A (en) 1987-09-02 1987-09-02 Signal converting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21787787A JPS6462870A (en) 1987-09-02 1987-09-02 Signal converting device

Publications (1)

Publication Number Publication Date
JPS6462870A true JPS6462870A (en) 1989-03-09

Family

ID=16711169

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21787787A Pending JPS6462870A (en) 1987-09-02 1987-09-02 Signal converting device

Country Status (1)

Country Link
JP (1) JPS6462870A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008533891A (en) * 2005-03-16 2008-08-21 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング Error handling method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008533891A (en) * 2005-03-16 2008-08-21 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング Error handling method

Similar Documents

Publication Publication Date Title
CA2171927A1 (en) Encoding Apparatus for Hierarchically Encoding Image Signal and Decoding Apparatus for Decoding the Image Signal Hierarchically Encoded by the Encoding Apparatus
HK88394A (en) Method of transmitting information, encoding device for use in the method, and decoding device for use in the method
ATE110912T1 (en) DECODER.
JPS5781787A (en) Error correcting device for digital television signal
FI892895A (en) Signal coding
JPS57125517A (en) Da conversion circuit
JPS5230319A (en) Compensation circuit of digital type gamma
JPS6462870A (en) Signal converting device
DK673487D0 (en) PROCEDURE AND LINK TO IMAGE CODING
SG64886A1 (en) High bandwidth reed-solomon encoding decoding and error correcting circuit
JPS5761387A (en) Encoder between frames
JPS5724180A (en) Orthogonal conversion decoder
JPS5235968A (en) Analog digital convertor
JPS5625853A (en) Information transmission system
SU1518922A1 (en) Image signal coder
JPS55158711A (en) Muting circuit
JPS5372408A (en) Signal transimtter
JPS5389315A (en) Orthogonal conversion decoding circuit
JPS6474883A (en) System for quantizing gain/shape vector
JPS5320711A (en) Error correction system for vertical-cross conversion encoder unit
JPS5761380A (en) Picture encoding system
SU1290531A2 (en) Differential pulse coder of television signal
JPS57152726A (en) A/d converting circuit
JPS56143764A (en) Decoder for multilevel picture signal
JPS5738083A (en) Orthogonal conversion decoder