CN1761165A - Temperature detection and compensation method of mobile communication terminal using power detection circuit - Google Patents
Temperature detection and compensation method of mobile communication terminal using power detection circuit Download PDFInfo
- Publication number
- CN1761165A CN1761165A CNA2005100707598A CN200510070759A CN1761165A CN 1761165 A CN1761165 A CN 1761165A CN A2005100707598 A CNA2005100707598 A CN A2005100707598A CN 200510070759 A CN200510070759 A CN 200510070759A CN 1761165 A CN1761165 A CN 1761165A
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- CN
- China
- Prior art keywords
- temperature
- power
- mobile communication
- communication terminal
- power amplifier
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- 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.)
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Classifications
-
- 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
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/14—Automatic detuning arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/725—Cordless telephones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
Abstract
The invention discloses a temperature detection and compensation method of mobile communication terminal using power detection circuit, belonging to temperature detection and compensation technology field. And the invention includes following steps: a step of detecting RF power level output by power amplifier (PAM) of the mobile communication terminal; a step of judging current terminal temperature corresponding to the detected RF power based on temperature variation table built-in the terminal; a step of compensating the power amplifier output and LCD status according to temperature compensation table as the judged temperature rise or decline relative to normal temperature. The invention can use the power detection circuit but not temperature sensor and A/D converter to detect terminal temperature and compensate brightness for the LCD and so on based on change of output value caused by temperature variation of the power amplifier. Thus, the invention can realize weight lightening and minimization for the mobile communication terminal, and can reduce cost by deleting addition circuit components.
Description
Technical field
The invention belongs to temperature detection and compensation technique field, particularly a kind of temperature detection and compensation method that utilizes the mobile communication terminal of power-sensing circuit.More particularly relate to a kind of not serviceability temperature transducer and analog to digital converter, and utilize power-sensing circuit, the temperature of the output valve change-detection terminal that causes from the variations in temperature of power amplifier, the temperature detection and the compensation method of the mobile communication terminal that utilizes power-sensing circuit of the brightness of compensation LCD (LCD) etc.
Background technology
Generally speaking, constitute the problem that each electronic component of mobile communication terminal exists its characteristic to change with temperature.Therefore, terminal also constitutes the compensating circuit that is used to compensate its characteristic simultaneously, this for minimize day by day recently, light-weighted mobile communication terminal, not only cause price to rise, and, realize that circuit also needs to occupy and append the space, increase terminal volume, become the factor that mobile communication terminal is realized miniaturization that hinders.
Fig. 1 is the block diagram that shows the mobile communication terminal formation that in the past has the LCD temperature-compensation circuit, and as shown in the figure, it comprises following several sections: power amplifier (PAM) 10, and it is used for the RF signal is carried out power amplification and passes through antenna (ANT) output; Power detection portion 20, it is used to detect the output of above-mentioned power amplifier; Control part 30, it adjusts the gain of above-mentioned power amplifier by the output of above-mentioned power detection portion monitoring power amplifier for obtaining required output.
Wherein, the characteristic of power detection portion 20 monitoring power amplifiers is also exported to control part 30, so that the characteristic that the input of compensating power amplifier 10 heats up and descends with temperature.So, control part 30 is controlled, and adjusts the gain of power amplifier, so that required output takes place all the time.
At this moment, in the element that the characteristic temperature influence changes, LCD40 is arranged,, in terminal, also comprise a LCD temperature-compensation circuit in order to compensate the characteristic of LCD.That is, as shown in Figure 1, the LCD temperature-compensation circuit also comprises as the lower part: temperature sensor 50, and it is used for the temperature of sense terminals; Analog to digital converter 60, it is the temperature transition by the said temperature sensor numeral and output, so that control part 30 can be discerned.So control part 30 compensates the brightness of LCD40 according to the temperature that detects according to the temperature compensation table (not marking among the figure) of storage in advance.But there are the following problems, and as previously mentioned, the LCD temperature-compensation circuit is minimizing day by day recently, in the light-weighted mobile communication terminal, becoming the factor that price rises, volume increases that causes.
Summary of the invention
The object of the present invention is to provide a kind of temperature detection and compensation method that utilizes the mobile communication terminal of power-sensing circuit, it is characterized in that comprising the steps: detecting the step of the RF power level of mobile communication terminal power amplifier (PAM) output; With reference to the built-in variations in temperature table of above-mentioned terminal, judge the step of the terminal Current Temperatures corresponding with the RF power of above-mentioned detection; When the temperature of above-mentioned judgement rises or descends with respect to normal temperature, reference temperature(TR) compensation meter, the step of the output of compensating power amplifier and the state of LCD.
Of the present inventionly will be intended to provide a kind of method, control part can utilize the output of the power amplifier that detects by original power detection portion, judges the temperature of terminal, according to the brightness of the temperature-compensating LCD of this terminal of judging etc.
The invention has the beneficial effects as follows not serviceability temperature transducer and analog to digital converter, but the temperature of the output valve change-detection terminal that causes from the variations in temperature of power amplifier, the brightness of compensation LCD etc., thereby can realize mobile communication terminal lightweight, minimize, can append the circuit accessory because of deletion and realize cost savings.
Description of drawings
Fig. 1 is the block diagram that shows the mobile communication terminal formation that in the past has the LCD temperature-compensation circuit.
Fig. 2 shows that the present invention has the block diagram of the mobile communication terminal formation of LCD temperature-compensation circuit.
Fig. 3 shows the terminal temperature detection of power-sensing circuit and the precedence diagram of LCD temperature compensation of utilizing of the present invention.
Embodiment
The invention provides a kind of temperature detection and compensation method that utilizes the mobile communication terminal of power-sensing circuit.With reference to the accompanying drawings, describe useful embodiment of the present invention in detail.
At first it should be noted that giving to the inscape of each accompanying drawing aspect the reference marks,,, given identical symbol as far as possible though be shown in the different accompanying drawings for identical inscape.
In addition, in following explanation, such as many specific details such as concrete handling processes, provide for a more complete understanding of the present invention, do not have these specific details, the present invention also can implement, and this is self-explantory the commonsense people of this technical field.And, omitted thinking the well-known function that may unnecessarily obscure main idea of the present invention and the detailed description of formation.
Fig. 2 shows that the present invention has the block diagram of the mobile communication terminal formation of LCD temperature-compensation circuit, as shown in the figure, does not comprise the LCD temperature-compensation circuit in Fig. 2.Its basic comprising comprises following several sections: power amplifier (PAM) 10, and it is used for the RF signal is carried out power amplification; Power detection portion 20, it is used to detect the output of above-mentioned power amplifier; Control part 30, it adjusts the gain of above-mentioned power amplifier by the output of above-mentioned power detection portion monitoring power amplifier for obtaining required output.
Wherein, above-mentioned power amplifier (PAM) has following physical characteristic substantially, that is, along with variation of temperature, temperature is high more, and output valve is more little, and temperature is low more, and output valve is big more.Therefore, can realize by altering the procedure in the present invention, that is, control part 30 can be changed according to the output of the power amplifier that detects by above-mentioned power detection portion 20 come detected temperatures.
In addition, though above-mentioned control part 30 can make power amplifier can obtain the effect of certain output all the time by adjusting gain in performance in the past, but in the present invention, should carry out the effect that basis is judged the action of temperature by the power of power detection portion detection and controlled LCD40 brightness according to this temperature of judging.
Simultaneously, in the internal storage (or external memory storage) of above-mentioned control part, have with power amplifier output corresponding temperature change table and preserve the gain of the power amplifier that need compensate according to each temperature and the temperature compensation table of the offset of LCD.
For example, at normal temperatures, the level that power amplifier (PAM) output is correct.But, if the temperature of mobile communication terminal with respect to normal temperature 20 degree that rise, the output valve of the power amplifier 0.5dB that then descends.Drop-out value can be discerned by Be Controlled portion of power detection portion.
So, shown in the precedence diagram of Fig. 3, control part reference temperature(TR) change list, the output changing value of the power amplifier that detects by above-mentioned power detection portion is discerned the temperature of mobile communication terminal, the reference temperature(TR) compensation meter, read and the gain adjustment value of the corresponding power amplifier of Current Temperatures and the temperature compensation value of LCD, the luminance difference that compensates causes.
Claims (2)
1. a temperature detection and a compensation method that utilizes the mobile communication terminal of power-sensing circuit is characterized in that comprising the steps:
Detect the step of the RF power level of mobile communication terminal power amplifier output;
With reference to the built-in variations in temperature table of above-mentioned terminal, judge the step of the terminal Current Temperatures corresponding with the RF power of above-mentioned detection;
When the temperature of above-mentioned judgement rises or descends with respect to normal temperature, reference temperature(TR) compensation meter, the step of the output of compensating power amplifier and the state of LCD.
2. according to described temperature detection and the compensation method that utilizes the mobile communication terminal of power-sensing circuit of claim 1, it is characterized in that:
The power amplifier and the LCD reference temperature(TR) compensation meter that influenced by said temperature read the gain adjustment value of the power amplifier corresponding with Current Temperatures and the temperature compensation value of LCD, the luminance difference that compensates causes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040081893 | 2004-10-13 | ||
| KR1020040081893A KR100585777B1 (en) | 2004-10-13 | 2004-10-13 | Temperature detection and compensation method for mobile station using power detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1761165A true CN1761165A (en) | 2006-04-19 |
Family
ID=36707131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100707598A Pending CN1761165A (en) | 2004-10-13 | 2005-05-18 | Temperature detection and compensation method of mobile communication terminal using power detection circuit |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100585777B1 (en) |
| CN (1) | CN1761165A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049506A1 (en) * | 2007-10-19 | 2009-04-23 | Shenzhen Grentech Co., Ltd | Compensation method of radio frequency module performance and radio frequency module |
| CN103715984A (en) * | 2012-09-28 | 2014-04-09 | 富士通株式会社 | Received signal strength indicator temperature compensation method and device |
| CN104935269A (en) * | 2015-07-12 | 2015-09-23 | 北京理工大学 | Temperature compensation method and system for gain of radio-frequency amplifier |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100687233B1 (en) * | 2005-10-28 | 2007-02-26 | 엘지전자 주식회사 | Thermal compensating circuit of mobile phone and thereof compensating method |
| CN103398727B (en) * | 2013-07-30 | 2015-12-23 | 广东威创视讯科技股份有限公司 | The temperature compensation of sensor and system in display system |
| CN105224002B (en) * | 2014-06-30 | 2017-01-18 | 展讯通信（上海）有限公司 | Temperature compensating method and device for radio frequency system and mobile terminal |
| CN110572134B (en) * | 2019-09-12 | 2022-11-01 | 展讯通信（深圳）有限公司 | Oscillation device and electronic apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10107653A (en) | 1996-09-30 | 1998-04-24 | Toshiba Corp | Transmission power control method and its device for radio communication equipment |
| KR20040027999A (en) * | 2002-09-28 | 2004-04-03 | 삼성전자주식회사 | Temperature compensated circuit of Power Amplifier Module in transmitting part of mobile station |
-
2004
- 2004-10-13 KR KR1020040081893A patent/KR100585777B1/en not_active IP Right Cessation
-
2005
- 2005-05-18 CN CNA2005100707598A patent/CN1761165A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049506A1 (en) * | 2007-10-19 | 2009-04-23 | Shenzhen Grentech Co., Ltd | Compensation method of radio frequency module performance and radio frequency module |
| CN103715984A (en) * | 2012-09-28 | 2014-04-09 | 富士通株式会社 | Received signal strength indicator temperature compensation method and device |
| CN103715984B (en) * | 2012-09-28 | 2016-08-17 | 富士通株式会社 | The temperature compensation of a kind of received signal strength indicator and device |
| CN104935269A (en) * | 2015-07-12 | 2015-09-23 | 北京理工大学 | Temperature compensation method and system for gain of radio-frequency amplifier |
| CN104935269B (en) * | 2015-07-12 | 2017-11-21 | 北京理工大学 | The temperature compensation and system of a kind of radio-frequency amplifier gain |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060032891A (en) | 2006-04-18 |
| KR100585777B1 (en) | 2006-06-07 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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