JPS6447113A - Digital filter - Google Patents
Digital filterInfo
- Publication number
- JPS6447113A JPS6447113A JP20375487A JP20375487A JPS6447113A JP S6447113 A JPS6447113 A JP S6447113A JP 20375487 A JP20375487 A JP 20375487A JP 20375487 A JP20375487 A JP 20375487A JP S6447113 A JPS6447113 A JP S6447113A
- Authority
- JP
- Japan
- Prior art keywords
- input signal
- fed
- different time
- time phase
- circuit
- 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.)
- Granted
Links
Landscapes
- Filters That Use Time-Delay Elements (AREA)
- Complex Calculations (AREA)
Abstract
PURPOSE:To obtain an excellent filter without waste in the operation of an arithmetic circuit by providing a selector to the input side of a coefficient multiplier so as to select an input signal with different time phase thereby modifying the circuit configuration optionally. CONSTITUTION:An input signal from a terminal 1 is fed to multipliers 5b-5j of each stage and multiplied with an impulse coefficient fed from a ROM 9 for each sampling period of an output signal. Then the multiplied value is added by adders 6b-6j through delay circuits 7b-7j and the result is outputted from a terminal 8. Moreover, selectors 4b-4j are provided to the input of the multipliers 5b-5j, and a signal having a different time phase being the result of retarding the input signal by a delay circuit 3 is fed to the selectors 4b-4j. Thus, the input signal with different time phase is selected in a prescribed timing to configure the circuit optionally thereby eliminating the waste of operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62203754A JP2822376B2 (en) | 1987-08-17 | 1987-08-17 | Digital filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62203754A JP2822376B2 (en) | 1987-08-17 | 1987-08-17 | Digital filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6447113A true JPS6447113A (en) | 1989-02-21 |
JP2822376B2 JP2822376B2 (en) | 1998-11-11 |
Family
ID=16479284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62203754A Expired - Lifetime JP2822376B2 (en) | 1987-08-17 | 1987-08-17 | Digital filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2822376B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02171016A (en) * | 1988-12-23 | 1990-07-02 | Nec Corp | Acyclic type interpolation filter |
WO2001045266A1 (en) * | 1999-12-17 | 2001-06-21 | Sakai, Yasue | Digital/analog converter |
WO2001045267A1 (en) * | 1999-12-17 | 2001-06-21 | Sakai, Yasue | Oversampling circuit and digital/analog converter |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60242717A (en) * | 1984-05-17 | 1985-12-02 | Sony Corp | Fir-type digital filter |
JPS62101112A (en) * | 1985-10-28 | 1987-05-11 | Sony Corp | Sampling frequency conversion circuit |
-
1987
- 1987-08-17 JP JP62203754A patent/JP2822376B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60242717A (en) * | 1984-05-17 | 1985-12-02 | Sony Corp | Fir-type digital filter |
JPS62101112A (en) * | 1985-10-28 | 1987-05-11 | Sony Corp | Sampling frequency conversion circuit |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02171016A (en) * | 1988-12-23 | 1990-07-02 | Nec Corp | Acyclic type interpolation filter |
WO2001045266A1 (en) * | 1999-12-17 | 2001-06-21 | Sakai, Yasue | Digital/analog converter |
WO2001045267A1 (en) * | 1999-12-17 | 2001-06-21 | Sakai, Yasue | Oversampling circuit and digital/analog converter |
US6486814B2 (en) | 1999-12-17 | 2002-11-26 | Yasue Sakai | Digital-to-analog converter using different multiplicators between first and second portions of a data holding period |
US6486813B1 (en) | 1999-12-17 | 2002-11-26 | Yasue Sakai | Oversampling circuit digital/analog converter |
Also Published As
Publication number | Publication date |
---|---|
JP2822376B2 (en) | 1998-11-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |