HK1015978A1 - Tuning control system - Google Patents

Tuning control system

Info

Publication number: HK1015978A1
Authority: HK; Hong Kong
Prior art keywords: control system; tuning control; tuning; control
Prior art date: 1995-11-09

Application number

HK99100743A

Inventor

Takeshi Ikeda

Tadataka Ohe

Akira Okamoto

Original Assignee

Takeshi Ikeda

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.)

1995-11-09

Filing date

1999-02-24

Publication date

1999-10-22

1999-02-24 Application filed by Takeshi Ikeda filed Critical Takeshi Ikeda

1999-10-22 Publication of HK1015978A1 publication Critical patent/HK1015978A1/en

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
- H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter

HK99100743A 1995-11-09 1999-02-24 Tuning control system HK1015978A1 (en)

Applications Claiming Priority (9)

Application Number	Priority Date	Filing Date	Title
JP31756695		1995-11-09
JP31722795		1995-11-09
JP31739395		1995-11-09
JP31722895		1995-11-09
JP31756795		1995-11-09
JP34665795		1995-12-13
JP1815296		1996-01-08
JP3888096		1996-02-01
PCT/JP1996/001098 WO1997017760A1 (en)	1995-11-09	1996-04-23	Tuning control system

Publications (1)

Publication Number	Publication Date
HK1015978A1 true HK1015978A1 (en)	1999-10-22

Family

ID=27571842

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
HK99100743A HK1015978A1 (en)	1995-11-09	1999-02-24	Tuning control system

Country Status (6)

Country	Link
JP (1)	JP3764484B2 (en)
KR (1)	KR100350399B1 (en)
CN (1)	CN1113463C (en)
AU (1)	AU5348296A (en)
HK (1)	HK1015978A1 (en)
WO (1)	WO1997017760A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2005119206A1 (en) *	2004-06-02	2005-12-15	Japan Science And Technology Agency	Method and device for controlling photo-excitation q value of vibrator
CN110380687B (en) *	2019-08-23	2024-06-18	无锡嘉硕科技有限公司	Multifunctional automatic correction and compensation machine for temperature frequency drift of crystal oscillator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5910092B2 (en) *	1979-10-22	1984-03-07	防衛庁技術研究本部長	Synchronous oscillation AFC method
JPS6290016A (en) *	1986-06-25	1987-04-24	Nippon Columbia Co Ltd	Frequency characteristic correction circuit
JPH03178205A (en) *	1989-12-07	1991-08-02	Matsushita Electric Ind Co Ltd	Phase shift type cr oscillator
JPH0575387A (en) *	1991-09-17	1993-03-26	Sanyo Electric Co Ltd	Variable delay circuit
JPH05183406A (en) *	1991-12-27	1993-07-23	Nec Eng Ltd	Automatic phase correction circuit
JPH05291945A (en) *	1992-04-14	1993-11-05	Matsushita Electric Ind Co Ltd	Phase difference measurement circuit for synchronizing signal

1996
- 1996-04-23 AU AU53482/96A patent/AU5348296A/en not_active Abandoned
- 1996-04-23 JP JP51804697A patent/JP3764484B2/en not_active Expired - Fee Related
- 1996-04-23 WO PCT/JP1996/001098 patent/WO1997017760A1/en active IP Right Grant
- 1996-04-23 CN CN96198160A patent/CN1113463C/en not_active Expired - Fee Related
- 1996-04-23 KR KR1019980701166A patent/KR100350399B1/en not_active IP Right Cessation
1999
- 1999-02-24 HK HK99100743A patent/HK1015978A1/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
KR19990037687A (en)	1999-05-25
CN1201568A (en)	1998-12-09
JP3764484B2 (en)	2006-04-05
WO1997017760A1 (en)	1997-05-15
AU5348296A (en)	1997-05-29
CN1113463C (en)	2003-07-02
KR100350399B1 (en)	2002-12-18

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Legal Events

Date	Code	Title	Description
2004-12-15	PF	Patent in force
2007-11-30	PC	Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)	Effective date: 20070423