CN101132498A - System and method for configuring high-frequency tuner - Google Patents
System and method for configuring high-frequency tuner Download PDFInfo
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- CN101132498A CN101132498A CNA2006100623169A CN200610062316A CN101132498A CN 101132498 A CN101132498 A CN 101132498A CN A2006100623169 A CNA2006100623169 A CN A2006100623169A CN 200610062316 A CN200610062316 A CN 200610062316A CN 101132498 A CN101132498 A CN 101132498A
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Abstract
This invention discloses a method and a system for configuring HF tuners with different types, in which, the method includes: a, a HF tuner receives a TV signal and the TV system compares the TV signal frequency with the segment parameter of a frequency of the HF tuner read in a TV storage to determine a performance parameter corresponding to the TV signal frequency according to the comparison result, b, the TV system writes the TV signal frequency and its corresponding performance parameter into the register of the tuner, and one software system can support multiple kinds of HF tuners.
Description
Technical field
The present invention relates to technical field of television sets, specifically, relate to a kind of technology of configuring high-frequency tuner.
Background technology
More and more universal along with TV, high-frequency tuner manufacturer is also more and more, and the performance between many high-frequency tuners all is not quite similar, make the kind of the high-frequency tuner that TV set software need support more and more, after having developed a type, in follow-up production, consider the problem of cost or buying, may need to change the tuner of other kind, at this moment just must be according to the software of different these the new high-frequency tuners of support of different high-frequency tuner exploitations.This has brought great burden for the design work of TV set software, has also reduced production efficiency simultaneously, has increased cost of developing.
Usually for fear of the appearance of above problem, existing scheme is when the TV software of a type of exploitation, may develop the software that several covers are supported some Regular History Frequency tuners, is opened to the options of a high-frequency tuner in factory's menu.Comprise two or more types high-frequency tuner in this options.For example comprise 3 types high-frequency tuner, represent 3 kinds of high-frequency tuners being supported respectively with numeral 1,2,3, and at the drive software of the corresponding 3 types of high-frequency tuners of TV software system, the numbering according to the type selecting correspondence of selected high-frequency tuner in the time of plant produced is just passable.Though make the high-frequency tuner that to accomplish to support some types like this, but the flexibility of this scheme is bad, in case a kind of new high-frequency tuner occurs, just can not well support, and several covers of this exploitation support the method for some Regular History Frequency tuner software can increase the construction cycle, have increased R﹠D costs.
Summary of the invention
The object of the present invention is to provide a kind of method and system thereof of configuring high-frequency tuner, need develop when tuner to different model is configured to solve in the prior art that the development amount that different software causes is excessive, the problem of inefficiency.
To achieve these goals, the present invention adopts following technical scheme:
A kind of method that disposes the high-frequency tuner of different model, described method comprises the steps:
A, high-frequency tuner received television signal, television system compares the frequency segmentation parameter of described TV signal frequency with the described high-frequency tuner that reads from television memory, determine the performance parameter of described TV signal frequency correspondence according to comparative result;
B, television system write described TV signal frequency and corresponding performance parameter thereof in the register of described high-frequency tuner.
Wherein also comprise before the step a:
Described frequency segmentation parameter and performance parameter in the performance index configuring high-frequency tuner configuration interface of a0, the high-frequency tuner selected for use according to television set, and store in the described television memory.
Wherein step a0 specifically comprises:
Determine according to the minimum value of the maximum of the performance index low band of described high-frequency tuner and medium wave band to be stored in the described memory behind the boundary frequency of described configuration interface low band and medium wave band;
Determine that according to the maximum of the performance index medium wave band of described high-frequency tuner and the minimum value of high band the boundary frequency of described configuration interface medium wave band and high band is stored in the described memory;
The value of low band, medium wave band and the high band of the performance index wave band diverter switch Band switching register of described high-frequency tuner is stored in the described memory;
Be stored in the described memory determine to search the value of BIT6 CP in the platform step-length Tuning step data register according to the frequency lock time after.
Wherein step a specifically comprises:
A1, described high-frequency tuner received television signal, described television system are with the boundary frequency of boundary frequency, medium wave band and the high band of the low band of described TV signal frequency and the described high-frequency tuner that reads from memory and medium wave band relatively;
A2, described television system are determined the value of BIT6 CP in the value of Band switching register of the residing wave band of described TV signal frequency, described wave band correspondence and the Tuning step data register according to comparative result.
Wherein step b specifically comprises:
B1, described television system write the value of BIT6 CP in the value of the Band switching register of described TV signal frequency, described TV signal frequency wave band correspondence of living in and the Tuning step data register in the register of described high-frequency tuner.
The present invention also provides a kind of system that disposes the high-frequency tuner of different model, comprises high-frequency tuner, and described system also comprises: microcontroller MCU and memory, wherein,
High-frequency tuner is used for received television signal;
The frequency segmentation parameter and the performance parameter of the described high-frequency tuner that the performance index value of the high-frequency tuner that basis was selected for use when memory was used for being stored in plant produced disposes in configuration interface;
Microcontroller MCU be used for described TV signal frequency be stored in the high-frequency tuner in the described memory the frequency segmentation parameter relatively, determine the performance parameter of described TV signal frequency correspondence then, and be used for described TV signal frequency and corresponding performance parameter thereof are write in the register of described high-frequency tuner.
The performance parameter of described high-frequency tuner comprises:
The value of low band, medium wave band and the high band of the boundary frequency of the boundary frequency of low band and medium wave band, medium wave band and high band, wave band diverter switch Band switching register and the value of searching BIT6 CP in the platform step-length Tuningstep data register.
The present invention overcomes the deficiencies in the prior art, when adopting plant produced according to the performance parameter of some total characteristic configuring high-frequency tuners of producing selected high-frequency tuner, when the TV signal of a certain frequency is input to high-frequency tuner, controller passes through the I2C bus to high-frequency tuner write frequency data, and write the parameter of some high-frequency tuners of factory set, thereby with the technical scheme of semaphore lock on this Frequency point, the present invention is simple to operate, make software systems can support multiple high-frequency tuner, shorten the R﹠D cycle, reduce R﹠D costs.
Description of drawings
Fig. 1 is the system block diagram of configuring high-frequency tuner of the present invention;
Fig. 2 is a high-frequency tuner factory-configured interface schematic diagram;
Fig. 3 is the operational flowchart of configuring high-frequency tuner of the present invention;
Fig. 4 current demand signal frequency configuration high-frequency tuner flow chart that receives according to television set of the present invention.
Embodiment
When basic principle of the present invention is plant produced according to the model of producing selected high-frequency tuner, the corresponding performance parameter value of configuration and the parameter that configures stored in the television memory (EEPROM) in configuration interface.When the software initialization program, again the above-mentioned parameter of preserving in the television memory is read and passed through the suitable calculating of software and judge, pass through I
2The C bus is written to certain channel related data in the register of high-frequency tuner.
As shown in Figure 1, the system of configuring high-frequency tuner of the present invention comprises: high-frequency tuner, decoder, scanning monitor, remote controller, microcontroller MCU, memory (EEPROM) and display.
Wherein, high-frequency tuner is used for received television signal; Decoder is used for the decoding of audio frequency and video; Scanning monitor is the driver part of television display; Remote controller is the interactive media between user and the television set; Microcontroller MCU is the control centre of whole system for TV set, TV set software with regard to burning in the ROM or FLASH of microcontroller; The corresponding value that the performance parameter of memory (EEPROM) high-frequency tuner that basis is selected for use when being used for being stored in plant produced disposes in configuration interface.
When the TV signal of a certain frequency was input to high-frequency tuner, MCU passed through I
2The C bus is to high-frequency tuner write frequency data, and writes the performance parameter of high-frequency tuner of the factory-configured of this frequency correspondence.
The method of configuring high-frequency tuner of the present invention comprises the steps:
(1) during plant produced, according to selected high-frequency tuner performance index, the factory's high-frequency tuner configuration interface that uses software systems to provide manually carries out factory-configured;
(2) the high-frequency tuner performance parameter that configures is deposited in the memory (EEPROM) of television set;
(3) when the software initialization program, the parameter of preserving in the television memory is read, promptly start shooting each the interchange, software systems all can be carried out the initialization setting to high-frequency tuner;
(4) the data process of reading is calculated, passed through I
2The C bus is written in the register of high-frequency tuner, being about to the centre frequency of current channel and the SET POINT1 (boundary frequency of low band VL and medium wave band VH) and the SET POINT2 (boundary frequency of medium wave band VH and high band UF) of above-mentioned configuration compares respectively, be in which wave band so that judge the centre frequency of the current channel that is searched, according to the DATA VL (in the wave band diverter switch Band switching register value of low band) of residing wave band with configuration, DATAVH (value of medium wave band in the Band switching register) or DATAUF (value of high band in the Bandswitching register) are written in the Band switching register.
Wherein, factory's performance parameter that need dispose mainly contains: the boundary frequency of VHF low (low band) and boundary frequency, VHF high and the UHF (high band) of VHF high (medium wave band); The value of three wave bands of high-frequency tuner Band switching (wave band diverter switch) register (UHF, VHF high, VHFlow); The value of BIT6 CP (charge pump charging current control bit) in high-frequency tuner Tuning step data (the searching the platform step-length) register.
High-frequency tuner factory-configured interface as shown in Figure 2, wherein various performance parameters is described as follows:
The boundary frequency factory set value of SET POINT1:VL and VH
The boundary frequency factory set value of SET POINT2:VH and UF
The VHF low factory set value of DATA VL:Band switching register
The VHF high factory set value of DATA VH:Band switching register
The UHF factory set value of DATA UF:Band switching register
The value of BIT6 CP in the CP:Tuning step data register
Because high-frequency tuner to different model, usually above parameter can there are differences, others just not there are differences concerning software systems, so pass through in the above parameter of factory-configured, and these parameters are saved in the memory (such as EEPROM) of television set, when the software systems initialization, above parameter is imported in the high-frequency tuner, just can reach software systems and support the purpose of different high-frequency tuners.
Describe the implementation process of the inventive method below for a specific example in detail, the high-frequency tuner of selecting for use when for example producing is the high-frequency tuner of the UV1613/AL-4 model of Philips, and the critical specifications of this chip is as follows:
| Parameter | Minimum value | Maximum | Unit |
| Band low (low band) | 48.25 | 154.25 | MHz |
| Band middle (medium wave band) | 161.25 | 439.25 | MHz |
| Band high (high band) | 447.25 | 855.25 | MHz |
| Band switching (wave band diverter switch) | Bit7 | Bit6 | Bit5 | Bit4 | Bit3 | Bit2 | Bit1 | Bit0 |
| Band low (low band) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Band middle (medium wave band) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Band high (high band) | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
CP:Charge pump current control bit (charge pump charging current control bit);
Logic 0:Charge pump current is 20 μ A (the charge pump charging current is 2 μ A)
Logic 1:Charge pump current is 20 μ A (the charge pump charging current is 20 μ A)
Concrete implementation step is as follows:
(1) in the factory-configured interface according to the performance parameter of the described arrangements of steps high frequency of Fig. 3 device:
SET POINT1:(154.25+161.25)/boundary frequency of 2=157.25//VHF low and VHF high
SET POINT2:(439.25+447.25)/boundary frequency of 2=443.25//VHF high and UHF
DATA VL:1 (the 0001B) // value of Bandswitching register when the centre frequency of channel is positioned at low band
DATA VH:2 (the 0010B) // value of Bandswitching register when the centre frequency of channel is positioned at medium wave band
DATA UF:4 (the 0100B) // value of Bandswitching register when the centre frequency of channel is positioned at high band
CP:0//this Bit has determined the size of charge pump charging current, thereby has reflected the frequency lock time of high-frequency tuner
(2) top 6 parameters of joining are stored in the memory of television set;
(3) when the TV system software initialize routine, 6 parameters of preserving in the memory are read;
(4) when the centre frequency of the some channels of search is 87.25MHz, when storing into this frequency in the high-frequency tuner,, represent that promptly 87.25 are positioned at the VL wave band because 87.25 less than SET POINT1, then software can pass through I
2C is written to the value of DATAVL, frequency 87.25 and CP in the corresponding register of high-frequency tuner.
Wherein, when television set receives the TV signal of a certain channel, TV MCU compares SET POINT1 and the SET POINT2 that stores in current demand signal frequency and the memory, judge which wave band is current frequency belong to, then the value of BIT6 CP and the frequency of current demand signal in the value of the Band switching register of this wave band correspondence, the Tuning step data register are write in the register of high-frequency tuner, as shown in Figure 4.
Can find for example by above, the difference of different high-frequency tuners on parameter configuration is that the value of Frequency range (high, medium and low wave band boundary frequency), Band switching and CP is different, and factory only need press aforesaid operations method configuration relevant parameter according to the specification of each high-frequency tuner and get final product.
Claims (7)
1. a method that disposes the high-frequency tuner of different model is characterized in that, described method comprises the steps:
A, high-frequency tuner received television signal, television system compares the frequency segmentation parameter of described TV signal frequency with the described high-frequency tuner that reads from television memory, determine the performance parameter of described TV signal frequency correspondence according to comparative result;
B, television system write described TV signal frequency and corresponding performance parameter thereof in the register of described high-frequency tuner.
2. method according to claim 1 is characterized in that, wherein also comprises before the step a:
Described frequency segmentation parameter and performance parameter in the performance index configuring high-frequency tuner configuration interface of a0, the high-frequency tuner selected for use according to television set, and store in the described television memory.
3. method according to claim 2, wherein step a0 specifically comprises:
Determine according to the minimum value of the maximum of the performance index low band of described high-frequency tuner and medium wave band to be stored in the described memory behind the boundary frequency of described configuration interface low band and medium wave band;
Determine that according to the maximum of the performance index medium wave band of described high-frequency tuner and the minimum value of high band the boundary frequency of described configuration interface medium wave band and high band is stored in the described memory;
The value of low band, medium wave band and the high band of the performance index wave band diverter switch Band switching register of described high-frequency tuner is stored in the described memory;
Be stored in the described memory determine to search the value of BIT6 CP in the platform step-length Tuning step data register according to the frequency lock time after.
4. method according to claim 1 is characterized in that, wherein step a specifically comprises:
A1, described high-frequency tuner received television signal, described television system are with the boundary frequency of boundary frequency, medium wave band and the high band of the low band of described TV signal frequency and the described high-frequency tuner that reads from memory and medium wave band relatively;
A2, described television system are determined the value of BIT6 CP in the value of Band switching register of the residing wave band of described TV signal frequency, described wave band correspondence and the Tuning step data register according to comparative result.
5. method according to claim 1 is characterized in that, wherein step b specifically comprises:
B1, described television system write the value of BIT6 CP in the value of the Band switching register of described TV signal frequency, described TV signal frequency wave band correspondence of living in and the Tuning step data register in the register of described high-frequency tuner.
6. a system that disposes the high-frequency tuner of different model comprises high-frequency tuner, it is characterized in that, described system also comprises: microcontroller MCU and memory, wherein,
High-frequency tuner is used for received television signal;
The frequency segmentation parameter and the performance parameter of the described high-frequency tuner that the performance index value of the high-frequency tuner that basis was selected for use when memory was used for being stored in plant produced disposes in configuration interface;
Microcontroller MCU be used for described TV signal frequency be stored in the high-frequency tuner in the described memory the frequency segmentation parameter relatively, determine the performance parameter of described TV signal frequency correspondence then, and be used for described TV signal frequency and corresponding performance parameter thereof are write in the register of described high-frequency tuner.
7. system according to claim 6 is characterized in that, the performance parameter of described high-frequency tuner comprises:
The value of low band, medium wave band and the high band of the boundary frequency of the boundary frequency of low band and medium wave band, medium wave band and high band, wave band diverter switch Band switching register and the value of searching BIT6 CP in the platform step-length Tuningstep data register.
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| CN102202193A (en) * | 2011-05-27 | 2011-09-28 | 深圳创维－Rgb电子有限公司 | Factory channel information configuration method and device for digital television |
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| CN102202193A (en) * | 2011-05-27 | 2011-09-28 | 深圳创维－Rgb电子有限公司 | Factory channel information configuration method and device for digital television |
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