ZA898312B - Satellite radio receiver - Google Patents

Satellite radio receiver

Info

Publication number
ZA898312B
ZA898312B ZA898312A ZA898312A ZA898312B ZA 898312 B ZA898312 B ZA 898312B ZA 898312 A ZA898312 A ZA 898312A ZA 898312 A ZA898312 A ZA 898312A ZA 898312 B ZA898312 B ZA 898312B
Authority
ZA
South Africa
Prior art keywords
circuit
radio receiver
satellite radio
frequency
local oscillator
Prior art date
Application number
ZA898312A
Inventor
Otto Klank
Klank Otto
Juergen Laabs
Laabs Juergen
Klaus Eilts-Grimm
Eilts-Grimm Klaus
Original Assignee
Thomson Brandt Gmbh
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6366294&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA898312(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of ZA898312B publication Critical patent/ZA898312B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/90—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for satellite broadcast receiving
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0041—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers
    • H03J1/005—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers in a loop
    • 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
    • H03J7/06—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 using counters or frequency dividers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5629—Admission control
    • H04L2012/5631—Resource management and allocation
    • H04L2012/5636—Monitoring or policing, e.g. compliance with allocated rate, corrective actions

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Relay Systems (AREA)

Abstract

A satellite radio receiver obtains signals from a satellite receiving installation comprising one or more frequency converters which may, for example, undergo a frequency drift as a result of temperature variations which cannot be compensated by an AFC circuit which is located in the satellite radio receiver and which controls a carrier oscillator for carrier regeneration in a demodulator circuit. According to the invention, a local oscillator for a mixer is designed as a PLL local oscillator (44) which can be tuned in a large or a small increment. The AFC circuit (1) and a synchronizing signal evaluation circuit (40) are corrected to a control circuit (34) by means of which the PLL local oscillator (44) is tuned, outside the control range of the AFC circuit (1), with a large increment in the case of undetected synchronizing signals and with a small increment in the case of detected synchronizing signals until the control range of the AFC circuit (1) is reached. The satellite radio receiver described is suitable for connection to satellite receiving installations which comprise a plurality of frequency converters and therefore deviate the nominal receiving frequency in a summary fashion and for private individual installations which, for economic reasons, possess low frequency stability.
ZA898312A 1988-11-02 1989-11-01 Satellite radio receiver ZA898312B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3837130A DE3837130A1 (en) 1988-11-02 1988-11-02 SATELLITE BROADCAST RECEIVER

Publications (1)

Publication Number Publication Date
ZA898312B true ZA898312B (en) 1990-07-25

Family

ID=6366294

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA898312A ZA898312B (en) 1988-11-02 1989-11-01 Satellite radio receiver

Country Status (15)

Country Link
EP (2) EP0441851A1 (en)
JP (1) JP3037352B2 (en)
KR (1) KR0158187B1 (en)
CN (1) CN1042460A (en)
AT (1) ATE158905T1 (en)
AU (1) AU4514289A (en)
DD (1) DD286072A5 (en)
DE (2) DE3837130A1 (en)
ES (1) ES2109220T3 (en)
FI (1) FI102436B (en)
HU (2) HU208201B (en)
MY (1) MY104459A (en)
TR (1) TR25651A (en)
WO (1) WO1990005410A1 (en)
ZA (1) ZA898312B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003082C1 (en) * 1990-02-02 1991-06-20 Blaupunkt-Werke Gmbh, 3200 Hildesheim, De Sound broadcasting station receiver esp. UHF car radio - controls frequency of mixing oscillator using program memory for subcarriers
JPH05268501A (en) * 1991-12-27 1993-10-15 Gold Star Co Ltd Satellite broadcast receiving system
EP0626775A1 (en) * 1993-05-22 1994-11-30 SELECO S.p.A. Tuning system with a voltage synthesizer and a digital memory
JPH09219693A (en) * 1996-02-09 1997-08-19 Mitsubishi Electric Corp Digital broadcast receiver
DE19815953C1 (en) * 1998-04-09 1999-09-23 Grundig Ag Method of compensating frequency deviations on reception of satellite radio signals using a satellite receiver system
GB2368751B (en) * 2000-09-20 2004-04-21 Nec Technologies Removal of reference frequency offset of a local oscillator in a telecommunications receiver
EP1926306A1 (en) * 2006-11-24 2008-05-28 Thomson Licensing Method and apparatus for automatic fine tuning based on sync detection
CN103188175B (en) * 2011-12-30 2018-05-04 国民技术股份有限公司 A kind of frequency compensated circuit, demodulating system and demodulation method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041535A (en) * 1976-07-22 1977-08-09 Matsushita Electric Corporation Of America Frequency synthesizer tuning system with signal seek control
JPS5657324A (en) * 1979-10-16 1981-05-19 Sanyo Electric Co Ltd Digital electronic tuning system
US4476580A (en) * 1980-06-17 1984-10-09 Sanyo Electric Co., Ltd. Automatic continuous tuning control apparatus for a receiver
US4538175A (en) * 1980-07-11 1985-08-27 Microdyne Corporation Receive only earth satellite ground station
US4367558A (en) * 1980-12-22 1983-01-04 Motorola, Inc. Method for automatically searching for an RF station
US4405947A (en) * 1981-05-08 1983-09-20 Rca Corporation Dual search mode type tuning system
JPS57208465A (en) * 1981-06-18 1982-12-21 Pioneer Electronic Corp Discriminating circuit for frequency
JPS5915335A (en) * 1982-07-15 1984-01-26 Maspro Denkoh Corp Satellite broadcast receiving device
US4498191A (en) * 1983-06-06 1985-02-05 General Electric Company Digital automatic frequency control with tracking

Also Published As

Publication number Publication date
JPH04501640A (en) 1992-03-19
TR25651A (en) 1993-05-12
FI912111A0 (en) 1991-04-30
HU208201B (en) 1993-08-30
KR900702647A (en) 1990-12-08
EP0441851A1 (en) 1991-08-21
KR0158187B1 (en) 1999-03-20
DE3837130A1 (en) 1990-05-03
EP0367214B1 (en) 1997-10-01
DE58909819D1 (en) 1997-11-06
ATE158905T1 (en) 1997-10-15
FI102436B1 (en) 1998-11-30
WO1990005410A1 (en) 1990-05-17
EP0367214A1 (en) 1990-05-09
CN1042460A (en) 1990-05-23
DD286072A5 (en) 1991-01-10
ES2109220T3 (en) 1998-01-16
HU896588D0 (en) 1991-07-29
FI102436B (en) 1998-11-30
AU4514289A (en) 1990-05-28
MY104459A (en) 1994-03-31
JP3037352B2 (en) 2000-04-24

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