Title:
OSCILLATION CONTROLLER
Document Type and Number:
Japanese Patent JPH0298716
Kind Code:
A
Abstract:
PURPOSE:To execute initial equalization in a short time by quickly switching true random output and pseudo random output. CONSTITUTION:The title device consists of an A/D converter 8, a Fourier transform means 10, a control arithmetic means 12, a reverse Fourier transform means 14, a window operating means 16, a D/A converter 18, etc. And a real random signal having a continuous spectrum is outputted by changing an extraction leading position in the window operating means at random. Also, by shifting the extraction leading position by the same quantity as in the superposition of the extraction leading position, a time function digital signal from the reverse Fourier transform means 14 can be passed almost as it is, and the pseudo random signal having a line spectrum is outputted. Therefore, it is possible to quickly switch the real random signal output and the pseudo random signal output. In such a manner, the initial equalization can be performed rapidly.
Inventors:
UENO KAZUYOSHI
SAKAI ZENJI
SAKAI ZENJI
Application Number:
JP25242988A
Publication Date:
April 11, 1990
Filing Date:
October 05, 1988
Export Citation:
Assignee:
IMV KK
International Classes:
G05D19/02; G01M7/02; (IPC1-7): G05D19/02
Domestic Patent References:
| JPS57151840A | 1982-09-20 | |||
| JPS63208913A | 1988-08-30 |
Attorney, Agent or Firm:
Furuya Eiko
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