ES8707641A1 - Perfeccionamientos introducidos en un circuito de ajuste de escala - Google Patents

Perfeccionamientos introducidos en un circuito de ajuste de escala

Info

Publication number
ES8707641A1
ES8707641A1 ES553109A ES553109A ES8707641A1 ES 8707641 A1 ES8707641 A1 ES 8707641A1 ES 553109 A ES553109 A ES 553109A ES 553109 A ES553109 A ES 553109A ES 8707641 A1 ES8707641 A1 ES 8707641A1
Authority
ES
Spain
Prior art keywords
offset compensation
scaling
truncation
scaling circuitry
bit
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
Application number
ES553109A
Other languages
English (en)
Other versions
ES553109A0 (es
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of ES8707641A1 publication Critical patent/ES8707641A1/es
Publication of ES553109A0 publication Critical patent/ES553109A0/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/04—Colour television systems using pulse code modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/04—Recursive filters
    • H03H17/0461—Quantisation; Rounding; Truncation; Overflow oscillations or limit cycles eliminating measures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/499—Denomination or exception handling, e.g. rounding or overflow
    • G06F7/49942—Significance control
    • G06F7/49947—Rounding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Computing Systems (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Analogue/Digital Conversion (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Optical Communication System (AREA)
  • Amplifiers (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Complex Calculations (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Electronic Switches (AREA)

Abstract

CIRCUITO DE AJUSTE DE ESCALA. AJUSTE DE ESCALA DE MUESTRA DE SEÑAL MODULADAS EN IMPULSOS CODIFICADOS, QUE CONSTA DE UN ACCESO DE ENTRADA DE SEÑAL PARA APLICAR LAS MUESTRAS DE SEÑAL PCM, UN CIRCUITO DE DESPLAZAMIENTO Y TRUNCAMIENTO PARA DESPLAZAR EL NIVEL DE SIGNIFICACION DE BITIOS DE MUESTRAS APLICADAS A SU ENTRADA PARA GENERAR MUESTRAS (22) DESPLAZADAS EN UN CIERTO NUMERO DE BITIOS Y TRUNCAR DICHAS MUESTRAS PARA EFECTUAR UNA MULTIPLICACION (CIRCUITO 16) DE LAS MUESTRAS APLICADAS A SU ENTRADA POR UN FACTOR DE ESCALA, CORRESPONDIENDO LA MUESTRAS DESPLAZADAS Y TRUNCADAS A MUESTRAS DE ENTRADA MULTIPLICADAS POR EL MISMO FACTOR DE ESCALA ANTERIOR.
ES553109A 1985-03-25 1986-03-18 Perfeccionamientos introducidos en un circuito de ajuste de escala Expired ES8707641A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/715,405 US4727506A (en) 1985-03-25 1985-03-25 Digital scaling circuitry with truncation offset compensation

Publications (2)

Publication Number Publication Date
ES8707641A1 true ES8707641A1 (es) 1987-08-01
ES553109A0 ES553109A0 (es) 1987-08-01

Family

ID=24873898

Family Applications (1)

Application Number Title Priority Date Filing Date
ES553109A Expired ES8707641A1 (es) 1985-03-25 1986-03-18 Perfeccionamientos introducidos en un circuito de ajuste de escala

Country Status (15)

Country Link
US (1) US4727506A (es)
EP (1) EP0196825B1 (es)
JP (1) JPH0792743B2 (es)
KR (1) KR950011821B1 (es)
CN (1) CN1008583B (es)
AT (1) ATE72078T1 (es)
AU (1) AU578352B2 (es)
CA (1) CA1245345A (es)
DE (1) DE3683518D1 (es)
DK (1) DK134886A (es)
ES (1) ES8707641A1 (es)
FI (1) FI90607C (es)
HK (1) HK11497A (es)
SG (1) SG179394G (es)
ZA (1) ZA862178B (es)

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JPH0817450B2 (ja) * 1987-08-20 1996-02-21 株式会社日立製作所 ノイズリデユ−サ
US4901265A (en) * 1987-12-14 1990-02-13 Qualcomm, Inc. Pseudorandom dither for frequency synthesis noise
US4905177A (en) * 1988-01-19 1990-02-27 Qualcomm, Inc. High resolution phase to sine amplitude conversion
US4926130A (en) * 1988-01-19 1990-05-15 Qualcomm, Inc. Synchronous up-conversion direct digital synthesizer
US4819252A (en) * 1988-02-16 1989-04-04 Thomson Consumer Electronics, Inc. Sampled data subsampling apparatus
JP2643422B2 (ja) * 1989-03-14 1997-08-20 松下電器産業株式会社 相関演算装置
US4965668A (en) * 1989-11-09 1990-10-23 The Grass Valley Group, Inc. Adaptive rounder for video signals
US5060180A (en) * 1990-07-26 1991-10-22 Unisys Corporation Programmable digital loop filter
JPH05503178A (ja) * 1990-11-09 1993-05-27 アダプティブ・ソリューションズ・インコーポレーテッド 偏りのないビット廃棄装置および方法
US5214598A (en) * 1990-11-09 1993-05-25 Adaptive Solutions, Inc. Unbiased bit disposal apparatus and method
JP2953052B2 (ja) * 1990-11-30 1999-09-27 ソニー株式会社 デジタル映像信号処理装置
US5218650A (en) * 1991-01-02 1993-06-08 Ricoh Corporation Quantization method for use in image compression
JPH04332215A (ja) * 1991-05-08 1992-11-19 Matsushita Electric Ind Co Ltd オフセット除去装置
JP3103914B2 (ja) * 1992-08-21 2000-10-30 ソニー株式会社 データの丸め処理回路およびデータの復元回路
DE4408768C1 (de) * 1994-03-15 1995-05-04 Siemens Ag Verfahren zur Filterung einer digitalen Wertefolge mit verbessertem Rauschverhalten und Schaltungsanordnung zur Durchführung des Verfahrens
JPH08172343A (ja) * 1994-12-15 1996-07-02 Sony Corp Ｉｉｒ型ディジタルフィルタの構成方法
US5493343A (en) * 1994-12-28 1996-02-20 Thomson Consumer Electronics, Inc. Compensation for truncation error in a digital video signal decoder
US5595179A (en) * 1995-05-02 1997-01-21 Acuson Corporation Adaptive persistence processing
AT403969B (de) * 1995-12-04 1998-07-27 Ericsson Schrack Aktiengesells Verfahren zur kompression eines analogen signals
US5696710A (en) * 1995-12-29 1997-12-09 Thomson Consumer Electronics, Inc. Apparatus for symmetrically reducing N least significant bits of an M-bit digital signal
JP3183155B2 (ja) 1996-03-18 2001-07-03 株式会社日立製作所 画像復号化装置、及び、画像復号化方法
US5745700A (en) * 1996-05-13 1998-04-28 International Business Machines Corporation Multi media video matrix address decoder
JPH10224184A (ja) * 1997-02-12 1998-08-21 Nec Corp ディジタルａｆｃ回路
DE69824230T2 (de) * 1997-04-08 2005-07-07 Koninklijke Philips Electronics N.V. Verarbeitungssystem einer verrauschten Bildsequenz und medizinisches Untersuchungsgerät mit einem solchen System
US6037918A (en) * 1998-03-30 2000-03-14 Candescent Technologies, Inc. Error compensator circuits used in color balancing with time multiplexed voltage signals for a flat panel display unit
DE19826252C2 (de) * 1998-06-15 2001-04-05 Systemonic Ag Verfahren zur digitalen Signalverarbeitung
US6301596B1 (en) * 1999-04-01 2001-10-09 Ati International Srl Partial sum filter and method therefore
US6446102B1 (en) * 1999-05-21 2002-09-03 Schneider Automation, Inc. Method and device for high speed scale conversion
US6513055B1 (en) 1999-10-29 2003-01-28 Visteon Global Technologies, Inc. Apparatus and method for data width reduction in automotive systems
US6401107B1 (en) * 1999-11-03 2002-06-04 Motorola, Inc. Method and processor for reducing computational error in a processor having no rounding support
FR2808139B1 (fr) * 2000-04-25 2003-01-03 Saint Louis Inst Procede de filtrage a large dynamique pour filtre numerique recursif implante dans un processeur de signal dsp travaillant avec des nombres entiers
US6883013B1 (en) * 2000-06-30 2005-04-19 Zoran Corporation Control of low frequency noise floor in upsampling
US6718069B2 (en) * 2001-02-22 2004-04-06 Varian Medical Systems, Inc. Method and system for reducing correlated noise in image data
US7174358B2 (en) * 2002-11-15 2007-02-06 Broadcom Corporation System, method, and apparatus for division coupled with truncation of signed binary numbers
US7117209B2 (en) * 2003-03-28 2006-10-03 International Business Machines Corporation Record trimming method, apparatus, and system to improve processing in a sort utility
US20050010396A1 (en) * 2003-07-08 2005-01-13 Industrial Technology Research Institute Scale factor based bit shifting in fine granularity scalability audio coding
US7620545B2 (en) * 2003-07-08 2009-11-17 Industrial Technology Research Institute Scale factor based bit shifting in fine granularity scalability audio coding
US7589326B2 (en) * 2003-10-15 2009-09-15 Varian Medical Systems Technologies, Inc. Systems and methods for image acquisition
US7095028B2 (en) 2003-10-15 2006-08-22 Varian Medical Systems Multi-slice flat panel computed tomography
TWI240220B (en) * 2004-04-26 2005-09-21 Chunghwa Picture Tubes Ltd Image processing method for a TFT LCD
JP2006287634A (ja) * 2005-03-31 2006-10-19 Pioneer Electronic Corp 信号処理装置、信号処理方法およびノイズ低減装置
US20060288063A1 (en) * 2005-06-17 2006-12-21 Arthur Abnous Method and system for high speed precoder design
US20070063981A1 (en) * 2005-09-16 2007-03-22 Galyean Tinsley A Iii System and method for providing an interactive interface
FR2895105A1 (fr) * 2005-12-20 2007-06-22 St Microelectronics Sa Procede pour diviser un nombre par une fraction ayant au numerateur un nombre en forme de puissance de 2
CN101046961B (zh) * 2006-03-31 2011-10-12 北京希格玛和芯微电子技术有限公司 一种基于波形的语音压缩、解压缩方法及电路
EP2007131B1 (en) * 2006-04-07 2013-02-27 Mitsubishi Electric Corporation Noise elimination apparatus and noise elimination method
US20080034027A1 (en) * 2006-08-01 2008-02-07 Linfeng Guo Method for reducing round-off error in fixed-point arithmetic
TWI349228B (en) * 2007-10-17 2011-09-21 Ind Tech Res Inst Speed-level calculator and calculating method for dynamic voltage scaling
JP5006423B2 (ja) * 2010-03-26 2012-08-22 株式会社ナナオ 巡回型ノイズ除去装置またはその方法

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US4240106A (en) * 1976-10-14 1980-12-16 Micro Consultants, Limited Video noise reduction
JPS5441061A (en) * 1977-09-08 1979-03-31 Sony Corp Analogue/digital converter
JPS6034853B2 (ja) * 1978-02-15 1985-08-10 株式会社日立製作所 デジタルフイルタ
US4275411A (en) * 1978-04-19 1981-06-23 Bernard Lippel Dither-quantized signalling for color television
US4195350A (en) * 1978-06-19 1980-03-25 Cbs Inc. Method and apparatus for eliminating deadband in digital recursive filters
US4229800A (en) * 1978-12-06 1980-10-21 American Microsystems, Inc. Round off correction logic for modified Booth's algorithm
US4236224A (en) * 1978-12-26 1980-11-25 Rockwell International Corporation Low roundoff noise digital filter
FR2448188A1 (fr) * 1979-02-02 1980-08-29 Anvar Procede et ensemble de calcul, aleatoirement par exces ou par defaut, pour fournir des resultats de calcul avec le nombre de chiffres significatifs exacts
JPS5567438U (es) * 1979-10-23 1980-05-09
NL8101199A (nl) * 1981-03-12 1982-10-01 Philips Nv Systeem voor het kwantiseren van signalen.
JPS57160264A (en) * 1981-03-30 1982-10-02 Canon Inc Recorder of half tone picture
DE3121597C3 (de) * 1981-05-30 1993-09-30 Bosch Gmbh Robert System zur Verminderung des Rauschens in einem Fernseh-Bildsignal
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US4494214A (en) * 1983-02-03 1985-01-15 Rca Corporation Apparatus for generating scaled weighting coefficients for sampled data filters
US4589084A (en) * 1983-05-16 1986-05-13 Rca Corporation Apparatus for symmetrically truncating two's complement binary signals as for use with interleaved quadrature signals
US4524447A (en) * 1983-05-25 1985-06-18 Rca Corporation Digital signal processing apparatus having digital dither
AU2632584A (en) * 1984-04-02 1985-10-10 Rca Corp. Filter scale weighting coefficient generation
US4594726A (en) * 1984-11-29 1986-06-10 Rca Corporation Dedithering circuitry in digital TV receiver
NL8500805A (nl) * 1985-03-20 1986-10-16 Philips Nv Recursief eerste orde digitaal videosignaalfilter.

Also Published As

Publication number Publication date
ATE72078T1 (de) 1992-02-15
DK134886D0 (da) 1986-03-24
HK11497A (en) 1997-02-05
FI90607C (fi) 1994-02-25
ES553109A0 (es) 1987-08-01
SG179394G (en) 1995-05-12
KR860007835A (ko) 1986-10-17
AU5481086A (en) 1986-10-02
CN1008583B (zh) 1990-06-27
DK134886A (da) 1986-09-26
CA1245345A (en) 1988-11-22
EP0196825A2 (en) 1986-10-08
FI90607B (fi) 1993-11-15
CN86101813A (zh) 1986-09-24
FI861122A (fi) 1986-09-26
AU578352B2 (en) 1988-10-20
ZA862178B (en) 1986-11-26
US4727506A (en) 1988-02-23
EP0196825A3 (en) 1988-06-15
DE3683518D1 (de) 1992-03-05
JPS61224573A (ja) 1986-10-06
JPH0792743B2 (ja) 1995-10-09
EP0196825B1 (en) 1992-01-22
FI861122A0 (fi) 1986-03-18
KR950011821B1 (ko) 1995-10-10

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20070423