GB2391780B - Delay lock loop circuit - Google Patents

Delay lock loop circuit

Info

Publication number
GB2391780B
GB2391780B GB0326184A GB0326184A GB2391780B GB 2391780 B GB2391780 B GB 2391780B GB 0326184 A GB0326184 A GB 0326184A GB 0326184 A GB0326184 A GB 0326184A GB 2391780 B GB2391780 B GB 2391780B
Authority
GB
United Kingdom
Prior art keywords
loop circuit
lock loop
delay lock
delay
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.)
Expired - Fee Related
Application number
GB0326184A
Other versions
GB0326184D0 (en
GB2391780A (en
Inventor
Yasuyuki Oishi
Kazuo Nagatani
Hajime Hamada
Yoshihiko Asano
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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
Priority claimed from JP20323798A external-priority patent/JP3825179B2/en
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of GB0326184D0 publication Critical patent/GB0326184D0/en
Publication of GB2391780A publication Critical patent/GB2391780A/en
Application granted granted Critical
Publication of GB2391780B publication Critical patent/GB2391780B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
GB0326184A 1998-07-17 1999-06-07 Delay lock loop circuit Expired - Fee Related GB2391780B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP20323798A JP3825179B2 (en) 1998-07-17 1998-07-17 Correlator
GB9913199A GB2340002B (en) 1998-07-17 1999-06-07 Correlator

Publications (3)

Publication Number Publication Date
GB0326184D0 GB0326184D0 (en) 2003-12-17
GB2391780A GB2391780A (en) 2004-02-11
GB2391780B true GB2391780B (en) 2004-03-24

Family

ID=30117174

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0326126A Expired - Fee Related GB2391779B (en) 1998-07-17 1999-06-07 Correlator
GB0326184A Expired - Fee Related GB2391780B (en) 1998-07-17 1999-06-07 Delay lock loop circuit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0326126A Expired - Fee Related GB2391779B (en) 1998-07-17 1999-06-07 Correlator

Country Status (1)

Country Link
GB (2) GB2391779B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0424500D0 (en) * 2004-11-05 2004-12-08 Univ Bath A method and apparatus for correlating data sequences
GB2481575A (en) * 2010-06-18 2012-01-04 Samsung Electronics Co Ltd Improvements to reception of spread spectrum signals

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385401A (en) * 1980-05-17 1983-05-24 Rockwell International Corporation Three-state digital mixer-driver circuit
JPH08316878A (en) * 1995-05-23 1996-11-29 Nec Corp Synchronization acquisition device for spread spectrum communication system and synchronization acquisition method
WO1999034529A2 (en) * 1997-12-23 1999-07-08 Koninklijke Philips Electronics N.V. Apparatus and method for code tracking in an is-95 spread spectrum communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385401A (en) * 1980-05-17 1983-05-24 Rockwell International Corporation Three-state digital mixer-driver circuit
JPH08316878A (en) * 1995-05-23 1996-11-29 Nec Corp Synchronization acquisition device for spread spectrum communication system and synchronization acquisition method
WO1999034529A2 (en) * 1997-12-23 1999-07-08 Koninklijke Philips Electronics N.V. Apparatus and method for code tracking in an is-95 spread spectrum communication system

Also Published As

Publication number Publication date
GB2391779B (en) 2004-03-24
GB0326184D0 (en) 2003-12-17
GB2391779A (en) 2004-02-11
GB2391780A (en) 2004-02-11
GB0326126D0 (en) 2003-12-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20140607