GB2236452B - Coefficient reduction in a low ratio sampling rate converter - Google Patents

Coefficient reduction in a low ratio sampling rate converter

Info

Publication number
GB2236452B
GB2236452B GB9015252A GB9015252A GB2236452B GB 2236452 B GB2236452 B GB 2236452B GB 9015252 A GB9015252 A GB 9015252A GB 9015252 A GB9015252 A GB 9015252A GB 2236452 B GB2236452 B GB 2236452B
Authority
GB
United Kingdom
Prior art keywords
sampling rate
rate converter
low ratio
coefficient reduction
ratio sampling
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.)
Expired - Fee Related
Application number
GB9015252A
Other languages
English (en)
Other versions
GB9015252D0 (en
GB2236452A (en
Inventor
Ajay K Luthra
Ganesh Rajan
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.)
Tektronix Inc
Original Assignee
Tektronix Inc
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 Tektronix Inc filed Critical Tektronix Inc
Publication of GB9015252D0 publication Critical patent/GB9015252D0/en
Publication of GB2236452A publication Critical patent/GB2236452A/en
Application granted granted Critical
Publication of GB2236452B publication Critical patent/GB2236452B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0223—Computation saving measures; Accelerating measures
    • H03H17/0227—Measures concerning the coefficients
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/065—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/0664—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is lower than the input sampling frequency, i.e. decimation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0685—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being rational
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0135—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Picture Signal Circuits (AREA)
  • Television Signal Processing For Recording (AREA)
GB9015252A 1989-07-14 1990-07-11 Coefficient reduction in a low ratio sampling rate converter Expired - Fee Related GB2236452B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37985089A 1989-07-14 1989-07-14

Publications (3)

Publication Number Publication Date
GB9015252D0 GB9015252D0 (en) 1990-08-29
GB2236452A GB2236452A (en) 1991-04-03
GB2236452B true GB2236452B (en) 1993-12-08

Family

ID=23498974

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9015252A Expired - Fee Related GB2236452B (en) 1989-07-14 1990-07-11 Coefficient reduction in a low ratio sampling rate converter

Country Status (3)

Country Link
JP (1) JPH07120924B2 (enrdf_load_stackoverflow)
DE (1) DE4022387A1 (enrdf_load_stackoverflow)
GB (1) GB2236452B (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236452B (en) 1989-07-14 1993-12-08 Tektronix Inc Coefficient reduction in a low ratio sampling rate converter
GB2245124A (en) * 1990-04-11 1991-12-18 Rank Cintel Ltd Spatial transformation of video images
JP3066241B2 (ja) * 1993-12-28 2000-07-17 株式会社エフ・エフ・シー ディジタルフィルタ及び同ディジタルフィルタを用いたオーバサンプリング型アナログ／ディジタル変換器
GB2315625B (en) * 1996-07-17 2001-02-21 Roke Manor Research Improvements in or relating to interpolating filters
US6927826B2 (en) 1997-03-26 2005-08-09 Semiconductor Energy Labaratory Co., Ltd. Display device
JPH11307782A (ja) 1998-04-24 1999-11-05 Semiconductor Energy Lab Co Ltd 半導体装置およびその作製方法
GB2356506A (en) * 1999-09-25 2001-05-23 Eastman Kodak Co Multiple dimension interpolator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105712A (ja) * 1982-12-09 1984-06-19 Fujitsu Ltd デイジタルフイルタ
JPH0793548B2 (ja) * 1987-08-31 1995-10-09 三洋電機株式会社 標本化周波数変換回路
US4837619A (en) * 1987-10-28 1989-06-06 North American Philips Corporation Scan rate conversion apparatus and method
JP2600236B2 (ja) * 1987-12-29 1997-04-16 ソニー株式会社 サンプリング周波数変換回路
GB2236452B (en) 1989-07-14 1993-12-08 Tektronix Inc Coefficient reduction in a low ratio sampling rate converter
US5023825A (en) 1989-07-14 1991-06-11 Tektronix, Inc. Coefficient reduction in a low ratio sampling rate converter

Also Published As

Publication number Publication date
JPH07120924B2 (ja) 1995-12-20
JPH0372711A (ja) 1991-03-27
GB9015252D0 (en) 1990-08-29
DE4022387C2 (enrdf_load_stackoverflow) 1992-11-19
GB2236452A (en) 1991-04-03
DE4022387A1 (de) 1991-01-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030711