JPS5625819A - Digital coefficient circuit - Google Patents

Digital coefficient circuit

Info

Publication number
JPS5625819A
JPS5625819A JP10147679A JP10147679A JPS5625819A JP S5625819 A JPS5625819 A JP S5625819A JP 10147679 A JP10147679 A JP 10147679A JP 10147679 A JP10147679 A JP 10147679A JP S5625819 A JPS5625819 A JP S5625819A
Authority
JP
Japan
Prior art keywords
aoi
moi
less
quantized
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.)
Pending
Application number
JP10147679A
Other languages
Japanese (ja)
Inventor
Tadamichi Kawasaki
Meiki Yahata
Hideo Suzuki
Shunsuke Yoda
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10147679A priority Critical patent/JPS5625819A/en
Publication of JPS5625819A publication Critical patent/JPS5625819A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

PURPOSE:To realize the less quantized step number with less number of components, by taking the filter coefficient as the product between the weighted binary number having a given bit number and the specified coefficient. CONSTITUTION:The filter coefficient aoi is expressed with the product between the digital value in 3-bit and specified coefficient. In this case, when 1>=aoi>0.5, moi=0o, when 0.5>=aoi>0.25, moi=1o, when 0.25>=aoi>0.125, moi=2o, and when 0.125>=aoi=3, then since the less aoi, the less the number of quantized steps, the quantized error is relatively small. Further, the decision of moi to aoi is definite, fine control can be made by only giving the three-bit signals M1i-M3i externally.
JP10147679A 1979-08-09 1979-08-09 Digital coefficient circuit Pending JPS5625819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10147679A JPS5625819A (en) 1979-08-09 1979-08-09 Digital coefficient circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10147679A JPS5625819A (en) 1979-08-09 1979-08-09 Digital coefficient circuit

Publications (1)

Publication Number Publication Date
JPS5625819A true JPS5625819A (en) 1981-03-12

Family

ID=14301775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10147679A Pending JPS5625819A (en) 1979-08-09 1979-08-09 Digital coefficient circuit

Country Status (1)

Country Link
JP (1) JPS5625819A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61258521A (en) * 1985-05-13 1986-11-15 Hitachi Ltd Digital filter
JPH0265311A (en) * 1988-06-03 1990-03-06 Hughes Aircraft Co Device for supplying weight function to signal in window and device for transacting radio frequency signal and method of supplying weight function

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389340A (en) * 1977-01-18 1978-08-05 Toshiba Corp Digital filter
JPS5499545A (en) * 1978-01-24 1979-08-06 Toshiba Corp Quantized noise formation circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389340A (en) * 1977-01-18 1978-08-05 Toshiba Corp Digital filter
JPS5499545A (en) * 1978-01-24 1979-08-06 Toshiba Corp Quantized noise formation circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61258521A (en) * 1985-05-13 1986-11-15 Hitachi Ltd Digital filter
JPH0265311A (en) * 1988-06-03 1990-03-06 Hughes Aircraft Co Device for supplying weight function to signal in window and device for transacting radio frequency signal and method of supplying weight function

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