JPS55154663A - Convolution operating system - Google Patents
Convolution operating systemInfo
- Publication number
- JPS55154663A JPS55154663A JP6103079A JP6103079A JPS55154663A JP S55154663 A JPS55154663 A JP S55154663A JP 6103079 A JP6103079 A JP 6103079A JP 6103079 A JP6103079 A JP 6103079A JP S55154663 A JPS55154663 A JP S55154663A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- fed
- memory
- polarity
- pulse
- 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
Abstract
PURPOSE: To enable high speed operation, by providing a circuit executing the operation in the combination of exclusive use memories with the operating section convoluting an input signal and a reference triangle function without using a complicated multiplier.
CONSTITUTION: A PCM signal multiplexed in time sharing is input from an input terminal 21, and frame pulse and channel pulse are fed from a clock terminal in synchronizing with the PCM signal. Only the polarity bit of each channel is branched from this PCM signal at a polarity separation circuit 23 and fed to an exclusive logical sum circuit 26, and the remaining bits except the least significance bit out of the absolute value amplitude bits are fed to a multiplication table memory 24. Further, the pulse from the terminal 22 is fed to a coefficient number forming circuit 25, and the output renewed every time slot split is fed to the memory 24 and a circuit 26. Further, the content of the memory 24 is read out to a complement forming circuit 27, and the result is of required polarity, the complement is formed. After that, processing is made at an adder 28, shift register 29, square circuit 30, two- stage shift register 31 and judging circuit 33, and the convolution between the input signal and the reference triangle function can be made at high speed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54061030A JPS6040069B2 (en) | 1979-05-19 | 1979-05-19 | Arithmetic method for signals and trigonometric functions |
US06/140,449 US4334273A (en) | 1979-04-24 | 1980-04-17 | Signal processing system using a digital technique |
DE3015449A DE3015449C2 (en) | 1979-04-24 | 1980-04-22 | Frequency decoder |
GB8013452A GB2049360B (en) | 1979-04-24 | 1980-04-23 | Digital signal processing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54061030A JPS6040069B2 (en) | 1979-05-19 | 1979-05-19 | Arithmetic method for signals and trigonometric functions |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55154663A true JPS55154663A (en) | 1980-12-02 |
JPS6040069B2 JPS6040069B2 (en) | 1985-09-09 |
Family
ID=13159479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54061030A Expired JPS6040069B2 (en) | 1979-04-24 | 1979-05-19 | Arithmetic method for signals and trigonometric functions |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6040069B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60168269A (en) * | 1984-02-13 | 1985-08-31 | Toshiba Corp | Convolutional arithmetic circuit |
JP2016148891A (en) * | 2015-02-10 | 2016-08-18 | ルネサスエレクトロニクス株式会社 | Current output circuit |
-
1979
- 1979-05-19 JP JP54061030A patent/JPS6040069B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60168269A (en) * | 1984-02-13 | 1985-08-31 | Toshiba Corp | Convolutional arithmetic circuit |
JP2016148891A (en) * | 2015-02-10 | 2016-08-18 | ルネサスエレクトロニクス株式会社 | Current output circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS6040069B2 (en) | 1985-09-09 |
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