ATE238632T1 - Entropie-code modenwechsel zur frequenzbereichsaudiokodierung - Google Patents

Entropie-code modenwechsel zur frequenzbereichsaudiokodierung

Info

Publication number
ATE238632T1
ATE238632T1 AT99966063T AT99966063T ATE238632T1 AT E238632 T1 ATE238632 T1 AT E238632T1 AT 99966063 T AT99966063 T AT 99966063T AT 99966063 T AT99966063 T AT 99966063T AT E238632 T1 ATE238632 T1 AT E238632T1
Authority
AT
Austria
Prior art keywords
data
encoded
frequency ranges
input
frequency
Prior art date
Application number
AT99966063T
Other languages
English (en)
Inventor
Wei-Ge Chen
Ming-Chieh Lee
Original Assignee
Microsoft 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22787314&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE238632(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Microsoft Corp filed Critical Microsoft Corp
Application granted granted Critical
Publication of ATE238632T1 publication Critical patent/ATE238632T1/de

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M5/00—Conversion of the form of the representation of individual digits
    • H03M5/02—Conversion to or from representation by pulses
    • H03M5/04—Conversion to or from representation by pulses the pulses having two levels
    • H03M5/14—Code representation, e.g. transition, for a given bit cell depending on the information in one or more adjacent bit cells, e.g. delay modulation code, double density code
    • H03M5/145—Conversion to or from block codes or representations thereof
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • H03M7/48—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind alternating with other codes during the code conversion process, e.g. run-length coding being performed only as long as sufficientlylong runs of digits of the same kind are present
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion
    • G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
AT99966063T 1998-12-14 1999-12-07 Entropie-code modenwechsel zur frequenzbereichsaudiokodierung ATE238632T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/211,531 US6300888B1 (en) 1998-12-14 1998-12-14 Entrophy code mode switching for frequency-domain audio coding
PCT/US1999/029109 WO2000036754A1 (en) 1998-12-14 1999-12-07 Entropy code mode switching for frequency-domain audio coding

Publications (1)

Publication Number Publication Date
ATE238632T1 true ATE238632T1 (de) 2003-05-15

Family

ID=22787314

Family Applications (2)

Application Number Title Priority Date Filing Date
AT03009177T ATE359624T1 (de) 1998-12-14 1999-12-07 Frequenzbereichsaudiodekodierung mit entropie- code moduswechsel
AT99966063T ATE238632T1 (de) 1998-12-14 1999-12-07 Entropie-code modenwechsel zur frequenzbereichsaudiokodierung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT03009177T ATE359624T1 (de) 1998-12-14 1999-12-07 Frequenzbereichsaudiodekodierung mit entropie- code moduswechsel

Country Status (6)

Country Link
US (1) US6300888B1 (de)
EP (3) EP1330038B2 (de)
JP (1) JP4786796B2 (de)
AT (2) ATE359624T1 (de)
DE (2) DE69935811T3 (de)
WO (1) WO2000036754A1 (de)

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Also Published As

Publication number Publication date
JP2002532765A (ja) 2002-10-02
US6300888B1 (en) 2001-10-09
DE69935811T3 (de) 2012-08-16
ATE359624T1 (de) 2007-05-15
EP1330038B1 (de) 2007-04-11
JP4786796B2 (ja) 2011-10-05
DE69907267T2 (de) 2003-11-06
WO2000036754A1 (en) 2000-06-22
DE69907267D1 (de) 2003-05-28
EP1330038A1 (de) 2003-07-23
EP1330039B1 (de) 2013-04-10
EP1330039A1 (de) 2003-07-23
EP1142130A1 (de) 2001-10-10
EP1142130B1 (de) 2003-04-23
DE69935811T2 (de) 2007-08-16
DE69935811D1 (de) 2007-05-24
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