GB2283871B - Control arrangements for digital radio receivers - Google Patents

Control arrangements for digital radio receivers

Info

Publication number: GB2283871B
Authority: GB; United Kingdom
Prior art keywords: digital radio; radio receivers; control arrangements; arrangements; control
Prior art date: 1993-10-28
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

GB9421403A

Other versions

GB9421403D0 (en

GB2283871A (en

Inventor

Ian Godfrey Fobbester

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.)

Plessey Semiconductors Ltd

Original Assignee

Plessey Semiconductors 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.)

1993-10-28

Filing date

1994-10-21

Publication date

1998-01-21

1993-10-28 Priority claimed from GB939322181A external-priority patent/GB9322181D0/en

1994-01-17 Priority claimed from GB9400762A external-priority patent/GB9400762D0/en

1994-10-21 Application filed by Plessey Semiconductors Ltd filed Critical Plessey Semiconductors Ltd

1994-10-21 Priority to GB9421403A priority Critical patent/GB2283871B/en

1994-12-07 Publication of GB9421403D0 publication Critical patent/GB9421403D0/en

1995-05-17 Publication of GB2283871A publication Critical patent/GB2283871A/en

1998-01-21 Application granted granted Critical

1998-01-21 Publication of GB2283871B publication Critical patent/GB2283871B/en

2014-10-21 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/06—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/061—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of DC offset
- H04L25/065—Binary decisions
- 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
- 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
- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/142—Compensating direct current components occurring during the demodulation and which are caused by mistuning
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
- H04L27/148—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using filters, including PLL-type filters
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
- H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
- H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Physics & Mathematics (AREA)
Spectroscopy & Molecular Physics (AREA)
Power Engineering (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Channel Selection Circuits, Automatic Tuning Circuits (AREA)

GB9421403A 1993-10-28 1994-10-21 Control arrangements for digital radio receivers Expired - Fee Related GB2283871B (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
GB9421403A GB2283871B (en)	1993-10-28	1994-10-21	Control arrangements for digital radio receivers

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
GB939322181A GB9322181D0 (en)	1993-10-28	1993-10-28	Frequency control for digital radio
GB9400762A GB9400762D0 (en)	1994-01-17	1994-01-17	Frequency control for digital radio
GB9421403A GB2283871B (en)	1993-10-28	1994-10-21	Control arrangements for digital radio receivers

Publications (3)

Publication Number	Publication Date
GB9421403D0 GB9421403D0 (en)	1994-12-07
GB2283871A GB2283871A (en)	1995-05-17
GB2283871B true GB2283871B (en)	1998-01-21

Family

ID=27266905

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB9421403A Expired - Fee Related GB2283871B (en)	1993-10-28	1994-10-21	Control arrangements for digital radio receivers

Country Status (1)

Country	Link
GB (1)	GB2283871B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2311194B (en) *	1996-03-12	2000-05-31	Nokia Mobile Phones Ltd	Transmitting and receiving radio signals
GB2335809B (en) *	1998-03-24	2001-09-12	Ericsson Telefon Ab L M	Demodulator circuits
GB2335808B (en) *	1998-03-24	2001-09-12	Ericsson Telefon Ab L M	Demodulator circuits
US6724247B2 (en)	2001-09-13	2004-04-20	Telefonaktiebolaget Lm Ericsson (Publ)	FM demodulator having DC offset compensation
GB2424326B (en) *	2005-03-18	2008-01-16	Motorola Inc	Receiver for receipt and demodulation of a frequency modulated RF signal and method of operation therein

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4873702A (en) *	1988-10-20	1989-10-10	Chiu Ran Fun	Method and apparatus for DC restoration in digital receivers
EP0430480A2 (en) *	1989-11-13	1991-06-05	Motorola, Inc.	FSK time-delay demodulator with reduced DC-offset

1994
- 1994-10-21 GB GB9421403A patent/GB2283871B/en not_active Expired - Fee Related

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4873702A (en) *	1988-10-20	1989-10-10	Chiu Ran Fun	Method and apparatus for DC restoration in digital receivers
EP0430480A2 (en) *	1989-11-13	1991-06-05	Motorola, Inc.	FSK time-delay demodulator with reduced DC-offset

Also Published As

Publication number	Publication date
GB9421403D0 (en)	1994-12-07
GB2283871A (en)	1995-05-17

Publication	Publication Date	Title
GB2260244B (en)	1995-04-05	Digital radio receiver
TW354206U (en)	1999-03-01	Radio receiver
AU6056694A (en)	1994-10-27	Automatic offset control circuit for digital receiver
SG48179A1 (en)	1998-04-17	Radio system
GB2242588B (en)	1994-12-14	Radio receiver
GB2280084B (en)	1997-12-10	Radio telephone system
GB2279833B (en)	1998-05-27	Television receiver
GB9023605D0 (en)	1990-12-12	Digital radio
GB9001302D0 (en)	1990-03-21	Radio receiver
EP0459383A3 (en)	1993-12-15	Radio receiver
GB2260245B (en)	1995-03-08	Digital radio receiver
GB9312690D0 (en)	1993-08-04	Television receiver
GB2282299B (en)	1997-06-25	Cellular radio system
EP0482927A3 (en)	1992-10-21	Digital radio receiver
SG47764A1 (en)	1998-04-17	Cellular radio system
EP0669725A4 (en)	1999-02-03	Radio receiver.
EP0603792A3 (en)	1995-03-22	FM tuner.
GB9015059D0 (en)	1990-08-29	Radio receivers
GB2283143B (en)	1997-08-06	Radio receivers
EP0620655A3 (en)	1996-06-12	Selective-calling radio receiver.
GB2283871B (en)	1998-01-21	Control arrangements for digital radio receivers
AU120522S (en)	1994-06-07	Television receiver
GB9500018D0 (en)	1995-03-01	Radio receivers
EP0649226A3 (en)	1996-07-24	Circuit arrangement for long-wave radio broadcast control receiver.
EP0513477A3 (en)	1993-02-10	Preset type radio receiver

Legal Events

Date	Code	Title	Description
1999-12-08	732E	Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
2007-02-07	732E	Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
2013-06-26	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 20121021