JPS6446337A - Code phase detection circuit - Google Patents

Code phase detection circuit

Info

Publication number
JPS6446337A
JPS6446337A JP62201748A JP20174887A JPS6446337A JP S6446337 A JPS6446337 A JP S6446337A JP 62201748 A JP62201748 A JP 62201748A JP 20174887 A JP20174887 A JP 20174887A JP S6446337 A JPS6446337 A JP S6446337A
Authority
JP
Japan
Prior art keywords
code
local
phase
input
code system
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
JP62201748A
Other languages
Japanese (ja)
Inventor
Kazumi Sagawa
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP62201748A priority Critical patent/JPS6446337A/en
Publication of JPS6446337A publication Critical patent/JPS6446337A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To shorten a time to detect a phase, by accumulating each chip of an input PN code system and that of a local PN code system in a shift register sequentially, and performing pattern comparison corresponding to the length of the shift register. CONSTITUTION:The local PN code of a D-type flip-flop 6 is compared with the input PN code of an input shift register 1 at every chip by a logic circuit. Also, accumulation data is read out from a RAM9 addressed by an address counter 5, and an adder 8 performs the addition of the data on comparison data, and updates the result in the same address as the accumulation data. An arithmetic control part 10 judges an accumulation data(correlative value) point which becomes maximum in the accumulation data corresponding to each address, and detects that the address shows the correction value of a PN code phase. Therefore, when correction is needed, the addition of a pulse is performed on a pulse addition circuit 11. In such a way, a timing by which a local PN code system is generated can be accelerated, and it is possible to perform the coincidence of the phase of the local PN code system with that of the input PN code system in the phase of the chip.
JP62201748A 1987-08-14 1987-08-14 Code phase detection circuit Pending JPS6446337A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62201748A JPS6446337A (en) 1987-08-14 1987-08-14 Code phase detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62201748A JPS6446337A (en) 1987-08-14 1987-08-14 Code phase detection circuit

Publications (1)

Publication Number Publication Date
JPS6446337A true JPS6446337A (en) 1989-02-20

Family

ID=16446287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62201748A Pending JPS6446337A (en) 1987-08-14 1987-08-14 Code phase detection circuit

Country Status (1)

Country Link
JP (1) JPS6446337A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04506149A (en) * 1989-05-05 1992-10-29 セントコール，インコーポレイテッド Improved cell culture system
JP2007217866A (en) * 2006-02-14 2007-08-30 Hory Corp Soundproof panel for construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04506149A (en) * 1989-05-05 1992-10-29 セントコール，インコーポレイテッド Improved cell culture system
JP2007217866A (en) * 2006-02-14 2007-08-30 Hory Corp Soundproof panel for construction

Similar Documents

Publication Publication Date Title
EP0118978A3 (en) Address sequencer for pattern processing system
TW366468B (en) A parallel processing division circuit
KR920007349A (en) Digital pulse processing equipment
JPS6446337A (en) Code phase detection circuit
US4156201A (en) Binary word presence indicating circuit
JPS55162167A (en) Electronic program computer
JPS5447443A (en) Semiconductor memory unit
JPS55103653A (en) Data processing unit
JPS53110334A (en) Patern correction system
JPS6453273A (en) Image data memory circuit in image processor
JPS53112627A (en) Division control system
JPH04144330A (en) Frame detection circuit
SU1418696A1 (en) Device for implementing boolean functions
JPS6430345A (en) Synchronizing detecting circuit
SU1737446A1 (en) Modulo ferma numbers adder
JPS55901A (en) Data buffer control system
KR100273246B1 (en) Apparatus for correcting error of state machine
SU1665382A1 (en) Device for mathematic functions computation
SU1177812A1 (en) Microprogram control device
JPH01228017A (en) Method for processing digital signal
JPS5762647A (en) Synchronizing circuit
JPH02124635A (en) Counter control circuit
JPS5661096A (en) Error detection system for read only memory electrically erasable
JPS56124954A (en) Advance control type information processing equipment
JPS6472399A (en) Memory testing device