Title:
SPREAD SPECTRUM SIGNAL DEMODULATION CIRCUIT
Document Type and Number:
Japanese Patent JP3249206
Kind Code:
B2
Abstract:
PURPOSE: To obtain a spread spectrum signal demodulation circuit where malfunction due to noises is prevented when the synchronism of codes is established.
CONSTITUTION: The correlation output of a correlator 24 is compared with the value of a hold circuit 25 in a comparator, and a larger value is stored in the hold circuit 25. When a counter 31 counts a prescribed number, a count value stored in the hold circuit 25 is held in a memory 34. When storage into the memory 34 is completed, a judgment unit 35 majority-judges the count value stored in the memory 34. The phase of an inverse spread code supplied to an inverse spreading circuit 21 is decided based on the judged result.
Inventors:
Hiroo Takagi
Application Number:
JP31715992A
Publication Date:
January 21, 2002
Filing Date:
November 26, 1992
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H04J13/00; H04B1/7075; (IPC1-7): H04J13/00
Domestic Patent References:
| JP56129450A | ||||
| JP6039940A | ||||
| JP2246547A | ||||
| JP4192733A | ||||
| JP4196939A | ||||
| JP33530A |
Attorney, Agent or Firm:
Masamasa Shibano
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