CN1208954C - Apparatus for providing tuner parameters in television receiver - Google Patents

Apparatus for providing tuner parameters in television receiver Download PDF

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Publication number
CN1208954C
CN1208954C CNB018108768A CN01810876A CN1208954C CN 1208954 C CN1208954 C CN 1208954C CN B018108768 A CNB018108768 A CN B018108768A CN 01810876 A CN01810876 A CN 01810876A CN 1208954 C CN1208954 C CN 1208954C
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CN
China
Prior art keywords
tuner
memory
television receiver
microprocessor
control parameter
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
CNB018108768A
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Chinese (zh)
Other versions
CN1435049A (en
Inventor
费罗兹·K·阿尔佩瓦拉
爱德华·A·霍尔
尤金·M·奥唐奈
爱德华·C·梅克斯纳
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Thomson Licensing SAS
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Thomson Licensing SAS
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Publication date
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Publication of CN1435049A publication Critical patent/CN1435049A/en
Application granted granted Critical
Publication of CN1208954C publication Critical patent/CN1208954C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Circuits Of Receivers In General (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

A television receiver comprising a tuner, a microprocessor, a communications bus and a rewritable memory, e.g., an electrically erasable programmable read only memory (EEPROM). The memory is programmed to contain the tuner parameters for a tuner. The memory can be programmed to be matched with a tuner such that, on the manufacturing floor, the tuner from each manufacturer is supplied with a matched memory for the television chassis that the tuner and memory are going to be placed within. The tuner parameters are recalled by the microprocessor and used to facilitate tuning of the tuner in a conventional manner.

Description

The device of tuner parameters is provided in television receiver
Technical field
The present invention relates generally to television receiver, be specifically related to be used for the tuner of television receiver.Comprise any TV-signal receiver that display is arranged and do not have display at this term " television receiver ".
Background technology
TV tuner is used for the television receiver such as television set, video tape recorder, home entertainment system etc.Tuner be implemented as the tuner module of separation or be integrated in the base plate at the tuning circuit on the circuit board (" tuner on the circuit board ").The tuner module and the tuner circuit on the circuit board that separate often comprise phase-locked loop (PLL) circuit of being convenient to received television signal.
Fig. 1 has described the part of the prior art TV base plate 100 that occurs traditionally in television receiver.TV base plate 100 comprises: tuner 104 has phase-locked loop 106; Microprocessor 108 has chip-scale memory 110.Tuner 104 is connected to microprocessor 108 via the communication bus 114 such as the integrated circuit in inside (12C) bus.The input port 102 of TV base plate 100 is connected to antenna and cable feeder line etc.Tuner 104 generally is a single conversion tuner, though can use two conversion tuners.Select channel cause television receiver to receive and carry out by microprocessor 108, its instruction tuner 104 and phase-locked loop 106 be tuned to specific channel receive.The tuner parameters 112 that is used to control phase-locked loop 106 generally is stored in chip-scale memory 110.That is the parameter of " hard coded " tuner in the memory in being embedded into microprocessor.Equally, if tuner 104 is modules of making discretely with the TV base plate, then must mate tuner function well between the tuner, so that can come the same tuner parameters of storage in chip-scale memory 110 in the mode of hard coded for all tuner modules.
Electronic tuning unit control is such processing, and wherein the control data of particular tuner (being also referred to as tuner parameters at this) is stored in non-volatile memory (chip-scale memory 110) in the microprocessor 108.When the user selected desired channel, 108 identifications (searching) of microprocessor in television reception machine bottom board 100 were stored in control data in non-volatile memory 110 to seek desired channel.Control data is transmitted to TV tuner 104 subsequently.
Tuner manufacturer uses various phase-locked loops (PLL) integrated circuits (IC) in their tuner design.Therefore the PLL integrated circuit is used to adjust the operating frequency of tuner, makes the television channel that television reception is desired.Because the frequency range spans 700MHz that will cover, so PLL is by being divided into several sections easily with this frequency range, and---being generally 3 to 4---realizes wide-band tuning.These parts are known as frequency band, and are low as VHF, VHF is high and UHF.
The division of the frequency range that covers is arbitrarily, and is different between the tuner design.Constituted the part of the control data that is stored in non-volatile memory 110 for this frequency range information of each frequency band in tuner.
The control data of being stored comprises that also guiding PLL synthesizes the instruction of the operational mode of desired frequency and specific PLL integrated circuit.Control data is controlled the PLL of selected channel, and is controlled at the various change-over circuits in the tuner, and promptly VHF is low, VHF is high and the UHF frequency band is selected change-over circuit.
When Electronic Control had alleviated designing requirement, it made the compatibility between the television receiver parts narrow down.Microprocessor 108 must comprise the concrete example line program, is used to select control data and propagates control data from chip-scale memory 110 to tuner 104.Tuner 104 must be suitable for accepting data and compensation mismatch.The TV tuner of replacing fault equally, at the scene requires to find new TV tuner and the specific tuner parameters of a cover that is suitable for by specific microprocessor control.
Be used in the TV base plate and those modules when being made by different tuner manufacturers when separating tuner module, the tuner parameters that store in the chip-scale memory is different between tuner.Equally, the chip-scale memory must distinguishingly be programmed, and has different data for the every kind of tuner type that is used for the TV base plate that is provided by different manufacturers.Because the chip-scale amount of memory storage is big or small limited, it is unpractiaca therefore storing every kind of tuner parameters that can be used for the tuner type of TV base plate.Equally, the parameter of a single cover is stored in and is used for specific tuner in the chip-scale memory 110.Therefore, do not change 108 tuners that can not change fault of microprocessor.
Therefore, this area needs a kind of method and apparatus, is used for neatly in TV base plate memory tuning device parameter.
Summary of the invention
The present invention is a kind of TV base plate, comprises tuner, microprocessor, communication bus and such as the replaceable nonvolatile memory of electronics Erasable Programmable Read Only Memory EPROM (EEPROM).Described replaceable nonvolatile memory is programmed the feasible tuner Control Parameter that comprises a tuner in the base plate manufacturing, allow to adjust rapidly according to the variation of tuner type.Described memory can be programmed at tuner, so that making the on-the-spot TV base plate that preparation is placed into for tuner, is provided the Control Parameter of coupling from the tuner of each manufacturer.In case TV is assembled, facility Electronic Control tuner and phase-locked loop are in a conventional manner called and be used to described tuner parameters again by microprocessor.When using independently programmable storage memory tuning device parameter, the present invention has avoided and must be programmed in chip-scale memory in the microprocessor for being used in every type tuner module in the TV base plate.
Television receiver provided by the invention comprises: tuner (tuner); Microprocessor (control device); Memory (storage device) is positioned at the outside of described microprocessor (control device) and is connected with described microprocessor (control device), is used for memory tuning device FREQUENCY CONTROL parameter; Communication bus (communication path), described microprocessor (control device) is connected with described tuner (tuner), wherein during selecting television channel, at least one tuner frequencies Control Parameter is sent to described tuner (tuner) from described memory (storage device).
Preferably, memory (storage device) comprises programmable read only memory.
Preferably, programmable read only memory comprises the electronics Erasable Programmable Read Only Memory EPROM.
Preferably, memory (storage device) is dismountable.
Preferably, the tuner frequencies Control Parameter is matched tuner (tuner).
Preferably, tuner (tuner) comprises phase-locked loop, and the tuner frequencies Control Parameter comprises the phase-locked loop control data.
Preferably, the tuner frequencies Control Parameter comprises the signal band transitional information.
Therefore, with reference to the embodiment shown in the accompanying drawing, can obtain wherein to realize and the mode of can understood in detail above-mentioned feature of the present invention and the more specific description of sketching above of the present invention.
But, should be noted that accompanying drawing only illustrates exemplary embodiments of the present invention, therefore can not be used as the qualification of its scope, because effective embodiment that the present invention can allow other to be equal to.
Description of drawings
Fig. 1 has described the part of block diagram of the TV base plate of prior art;
Fig. 2 has described the block diagram according to TV base plate of the present invention.
Embodiment
For facility is understood,, used identical Reference numeral to represent similar elements total in the accompanying drawing in possible place.
After the explanation below having thought deeply, those skilled in the art can clearly understand can easily realize content of the present invention in television receiver.The disclosure comprises a kind of TV tuner, but wherein uses write memory to come the tuning of convenient tuner synergistically with microprocessor.But described write memory storage is for the tuner Control Parameter of the phase-locked loop in tuner.
Fig. 2 has described the block diagram according to an embodiment of TV base plate 200 of the present invention.TV base plate 200 comprises: input port 102 is used to receive the RF signal, as TV signal; Tuner 104 has phase-locked loop 106; Microprocessor 108 has chip-scale memory 110; But write memory 202 is used for memory tuning device parameter 112.Tuner 104 is connected to tuner control system 204 by communication bus 114, and tuner control system 204 comprises microprocessor 108 and memory 202.Tuner is by port one 02 received television signal, and port one 02 generally is connected to cable, digital video disc, video tape recorder or any other TV signal source.
Tuner module 104 is provided in the frequency band that is provided by the RF source by the RF signal corresponding to the desired television channel of selecting from a plurality of channel positions.The RF signal relevant with television channel can be simulation and/or digital television signal.Anolog TV signals can be included in traditional NTSC system (NTSC) modulation signal of the U.S..Digital television signal can comprise residual sideband (VSB) modulation signal according to Advanced Television systematics meeting standard (ATSC) standard A/53, as high definition TV (HDTV) signal.System described here also can be configured to by the appropriate change in TV control system 204 extended formatting such as Europe is had an effect.
Tuner module 104 selects desired television channel to be presented on the display according to the tune command that is produced by microprocessor 108.Microprocessor 108 is connected to tuner module 104 via communication bus 114.In the present embodiment, communication bus 114 can be the communication bus of integrated circuit (12C) bus, three-way bus or any kind of inside.Except the tune command that is produced by microprocessor 108, microprocessor calls tuner parameters 112 again from memory 202 and is used for tuner module 104.These tuner parameters 112 are passed to phase-locked loop 106 in tuner module 104 by communication bus 114.
But memory 202 is non-volatile write memories, it can be including, but not limited to read-only memory (ROM) or programmable read-only memory (prom), and the latter can further be divided into electronic programmable ROM (EPROM), electronics Erasable Programmable Read Only Memory EPROM (EEPROM) and disposable PROM (OTPROM).Before being installed in memory 202 in the base plate 200, utilize " in batch " programming technique, memory 202 is programmed simultaneously with a plurality of other memories.The electronic programmable memory can utilize correct tuner control information to programme during the base plate manufacturing.Control data 112 comprises the synthetic digital information that is used to receive correct frequency necessity of selected TV signal for tuner PLL 106.
By this way, tuner module 104 is provided correct frequency and optimum performance for desired television channel by electronic tuning.Tuner parameters be delivered to from microprocessor phase-locked loop 106 with the control of convenient tuner after, tuner module 104 comprises that all control data necessary for tuner.Equally, tuner module 104 is separating components in TV base plate 200, allows for example need not to change TV control system 204 at the scene---specifically being microprocessor 102---and change tuner module 104.When use is of the present invention, can change tuner module 104 with the memory 202 of coupling so that convenient tuner parameters 112 and new tuner 104 couplings of changing.
Though be shown specifically and illustrated the various embodiment that comprise content of the present invention at this, those skilled in the art can easily design many embodiment that still comprise other variations of these contents.For example, disclosed invention can be used to FM broadcast radio receiver.

Claims (7)

1. television receiver comprises:
Tuner (104);
Microprocessor (108);
Memory (202) is positioned at the outside of described microprocessor (108) and is connected with described microprocessor (108), is used for memory tuning device FREQUENCY CONTROL parameter (112);
Communication bus (114) is connected described microprocessor (108) with described tuner (104), wherein during selecting television channel, at least one tuner frequencies Control Parameter is sent to described tuner (104) from described memory (202).
2. according to the television receiver of claim 1, wherein said memory (202) comprises programmable read only memory.
3. according to the television receiver of claim 2, wherein said programmable read only memory (202) comprises the electronics Erasable Programmable Read Only Memory EPROM.
4. according to the television receiver of claim 1, wherein said memory (202) is dismountable.
5. according to the television receiver of claim 1, wherein said tuner frequencies Control Parameter (112) is matched described tuner (104).
6. according to the television receiver of claim 1, wherein said tuner (104) comprises phase-locked loop (106), and described tuner frequencies Control Parameter (112) comprises the phase-locked loop control data.
7. according to the television receiver of claim 1, wherein said tuner frequencies Control Parameter comprises the signal band transitional information.
CNB018108768A 2000-06-09 2001-06-05 Apparatus for providing tuner parameters in television receiver Expired - Fee Related CN1208954C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21089300P 2000-06-09 2000-06-09
US60/210,893 2000-06-09

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CN1435049A CN1435049A (en) 2003-08-06
CN1208954C true CN1208954C (en) 2005-06-29

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EP (1) EP1287689A2 (en)
JP (1) JP2004507911A (en)
KR (1) KR20030010665A (en)
CN (1) CN1208954C (en)
AU (1) AU2001275245A1 (en)
MX (1) MXPA02012130A (en)
WO (1) WO2001097512A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6876400B2 (en) * 2001-12-19 2005-04-05 Thomson Licensing S.A. Apparatus and method for protecting a memory sharing signal control lines with other circuitry
US20060063503A1 (en) * 2002-06-17 2006-03-23 Koninklikle Phillips Electronics Nv Receiver and tuner with electronically tuned filter
ES2206040A1 (en) * 2002-10-07 2004-05-01 Televes, S.A. Tunable filter for use in amplifying television signals, uses application of control voltage to each varicap diode in coupling circuit to vary capacitance of coupling circuit
KR100709413B1 (en) * 2004-12-06 2007-04-18 엘지전자 주식회사 Method for Operating Personal System Setting Information in Television Set having Attachable Memory Unit
JP2006325111A (en) * 2005-05-20 2006-11-30 Alps Electric Co Ltd Method for manufacturing television tuner, and television tuner
JP3128349U (en) 2006-10-23 2007-01-11 船井電機株式会社 Television receiver
JP2008199481A (en) 2007-02-15 2008-08-28 Funai Electric Co Ltd Digital broadcast receiving apparatus
JP2009049813A (en) * 2007-08-21 2009-03-05 Sanyo Electric Co Ltd Semiconductor device for use in radio tuner and method for manufacturing the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3138143B2 (en) * 1994-06-17 2001-02-26 三洋電機株式会社 Television receiver
JP3319491B2 (en) * 1995-01-19 2002-09-03 船井電機株式会社 Broadcast wave channel tuning method
US5754253A (en) * 1996-01-11 1998-05-19 Lg Electronics Inc. Apparatus for generating a plurality of quasi-moving PIP/POP screens
GB2336731A (en) * 1998-04-22 1999-10-27 Thomson Multimedia Sa A video tuner in which data representing a PLL division is used to control other circuit parameters
KR20020035144A (en) * 1999-09-22 2002-05-09 추후제출 Pll with memory for electronic alignments

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Publication number Publication date
KR20030010665A (en) 2003-02-05
EP1287689A2 (en) 2003-03-05
WO2001097512A2 (en) 2001-12-20
JP2004507911A (en) 2004-03-11
CN1435049A (en) 2003-08-06
MXPA02012130A (en) 2003-04-25
WO2001097512A3 (en) 2002-04-11
AU2001275245A1 (en) 2001-12-24

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