CN105337633A - Mobile station, method and device for improving sensitivity of mobile station - Google Patents
Mobile station, method and device for improving sensitivity of mobile station Download PDFInfo
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- CN105337633A CN105337633A CN201410308960.4A CN201410308960A CN105337633A CN 105337633 A CN105337633 A CN 105337633A CN 201410308960 A CN201410308960 A CN 201410308960A CN 105337633 A CN105337633 A CN 105337633A
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Abstract
The invention relates to a mobile station, a method and device for improving the sensitivity of the mobile station. The method includes the following steps that: first pixel clock signals of mobile station display peripheral equipment are obtained; a channel used by next time slot data to be received by a mobile station receiver is obtained; whether the obtained channel is in the range of channels which are interfered by the first pixel clock signals of the mobile station display peripheral equipment is judged; and when the obtained channel is in the range of the channels which are interfered by the first pixel clock signals, second pixel clock signals are adopted as the clock signals of the mobile station display peripheral equipment. With the method provided by the above technical schemes adopted, the sensitivity of the mobile station can be effectively improved, and the use experience of a user can be enhanced.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and device, the travelling carriage that improve travelling carriage sensitivity.
Background technology
Travelling carriage is the subscriber equipment of mobile communication system, comprises Vehicle mounted station, portable and hand-held set.
The display screen of travelling carriage, can be divided into the display screen with random access memory (RandomAccessMemory, RAM) and the display screen without RAM usually.Wherein, with the display screen of RAM, after receiving the serial data of sending outside, received data temporarily can be left in RAM, after the data transaction of storage is become parallel data by the integral control circuit then carried by display screen, then show on a display screen or carry out Refresh Data.And the display screen not carrying RAM is when screen is in illuminating state, the state accepting external data transmission can be in always.Now, for the RGB display screen not carrying RAM, pixel clock (PeripheralClock the is called for short PCLK) signal that application processor (ApplicationProcessor is called for short AP) in travelling carriage just can send with specific frequency peripheral device.
Wherein, in mobile communication system, the paired uplink/downlink frequency band be partitioned in uplink/downlink frequency band is called physical channel according to numeral number, and corresponding channel number is called absolute wireless channel numbering (AbsolutenessRadioFrequencyChannelNumber, ARFCN).Each ARFCN correspond to a pair uplink and downlink channel, that is to say the physical channel in mobile communications network.When the RGB display screen without RAM is in the state that screen is lighted, can impact by the channel corresponding to ARFCN with the PCLK clock signal that certain frequency sends, make mobile communications network cannot be moved platform by the signal of described transmission normally to receive, have a strong impact on the radio-frequency performance of travelling carriage.
Summary of the invention
What the embodiment of the present invention solved is when screen is in illuminating state, the interference that the PCLK clock signal how the reducing travelling carriage display screen channel corresponding to ARFCN produces, and improves the sensitivity of travelling carriage.
For solving the problem, embodiments provide a kind of method improving travelling carriage sensitivity, described method comprises:
Obtain the first pixel clock signal of travelling carriage display screen ancillary equipment;
Obtain the channel that mobile station receiver next time slot data to be received use;
Within the scope judging the channel whether channel that obtains can disturb at the first pixel clock signal of described travelling carriage display screen ancillary equipment;
When judging that the channel that obtains is within the range of channels that can disturb of described first pixel clock signal, use described second pixel clock signal as the clock signal of described travelling carriage display screen ancillary equipment.
Alternatively, the scope of channel that can disturb of the first pixel clock signal of described travelling carriage display screen ancillary equipment is determined by the frequency of described first pixel clock signal and phase noise.
Alternatively, described method also comprises:
When the channel judging to obtain is not within the range of channels that described first pixel clock signal can disturb, use described first pixel clock signal as the clock signal of described travelling carriage display screen ancillary equipment.
Alternatively, whether the channel that described judgement obtains, within the scope of the channel of described first pixel clock signal interference, comprising:
When absolute wireless channel numbering corresponding to obtained channel is within the scope of absolute wireless channel numbering corresponding to the scope of the channel that described first pixel clock signal can disturb, within the scope judging the channel that the channel that obtains can disturb at described first pixel clock signal.
Alternatively, the frequency of described second pixel clock signal is close to the frequency of described first pixel clock signal.
The embodiment of the present invention additionally provides a kind of device improving travelling carriage sensitivity, and described device comprises:
First signal generation unit, is suitable for the first pixel clock signal producing travelling carriage display screen ancillary equipment;
Secondary signal generation unit, is suitable for the second pixel clock signal producing travelling carriage display screen ancillary equipment;
Acquiring unit, is suitable for the channel that acquisition mobile station receiver next time slot data to be received use;
Judging unit, within the scope being suitable for judging the channel whether channel that described acquiring unit obtains can disturb at the first pixel clock signal of described travelling carriage display screen ancillary equipment;
First control unit, be suitable for when described judging unit judges that the channel that obtains is within the scope of the channel that described first pixel clock signal can disturb, the second pixel clock signal of the described travelling carriage display screen ancillary equipment using described secondary signal generation unit to produce is as the clock signal of described travelling carriage display screen ancillary equipment.
Alternatively, the scope of channel that can disturb of the first pixel clock signal of described travelling carriage display screen ancillary equipment is determined by the frequency of described first pixel clock signal and phase noise.
Alternatively, described device also comprises: the second control unit, be suitable for when described judging unit judges that the channel that obtains is not within the range of channels that described first pixel clock signal can disturb, the first pixel clock signal using described first signal generation unit to produce is as the clock signal of described travelling carriage display screen ancillary equipment.
Alternatively, described judging unit, comprising:
First obtains subelement, is suitable for obtaining the absolute wireless channel numbering that the channel of mobile station receiver next time slot data use to be received is corresponding;
Second obtains subelement, is suitable for obtaining the scope of absolute wireless channel numbering corresponding to the scope of channel that described first pixel clock signal can disturb;
Judgment sub-unit, be suitable for when first obtain absolute wireless channel numbering corresponding to channel that the mobile station receiver that obtains of subelement next time slot data to be received use obtain within the scope of absolute wireless channel numbering corresponding to range of channels that described first pixel clock signal that subelement obtains can disturb second time, judge that the channel that next time slot data to be received use is the channel that described first pixel clock signal can disturb.
Alternatively, the frequency of described second pixel clock signal is close to the frequency of described first pixel clock signal.
The embodiment of the present invention additionally provides a kind of travelling carriage, and described travelling carriage comprises the device of above-mentioned raising travelling carriage sensitivity.
Compared with prior art, technical scheme of the present invention has following advantage:
The absolute wireless channel numbering that PCLK clock signal frequency due to the display screen by the not carrying RAM channel being arranged to use according to next time slot data to be received is corresponding changes, the interference that the high order harmonic component can eliminating PCLK clock signal causes for the channel that ARFCN is corresponding, make travelling carriage normally can receive the signal of mobile communications network, therefore, effectively can improve the sensitivity of travelling carriage, promote the experience of user.
Further, because the frequency of described first pixel clock signal is close to the frequency of described second pixel clock signal, therefore, can effectively prevent the display image of the display screen caused because the PCLK clock signal of display screen changes from producing shake and motion blur phenomenon.
Further, the wireless channel numbering corresponding due to the channel of described first pixel clock signal impact has default scope, when the ARFCN value that the channel that next time slot data to be received use is corresponding drops in described default scope, use described second pixel clock signal as the clock signal being display screen, therefore, effectively can eliminate the phase noise due to clock signal, on the interference that the channel of the side frequency of the channel of PCLK clock signal impact causes.
Accompanying drawing explanation
Fig. 1 is a kind of flow chart improving the method for travelling carriage sensitivity in the embodiment of the present invention;
Fig. 2 is a kind of structural representation improving the device of travelling carriage sensitivity in the embodiment of the present invention;
Fig. 3 is the structural representation of the judging unit in the embodiment of the present invention.
Embodiment
In daily life, when the RGB display screen not carrying RAM in travelling carriage is in illuminating state, the application processor (ApplicationProcessor is called for short AP) in travelling carriage just can send PCLK clock signal with stable frequency.The high order harmonic component of described PCLK clock signal will cause interference by the channel corresponding to ARFCN (absolute wireless channel numbering).
Such as, for have 4.7 inches display screen mobile phone for, the frequency of the clock signal that the application processor of the baseband chip of mobile phone can provide is 27.428571MHz, the high order harmonic component of described clock signal can to enhancement mode global system for mobile communications (EnhancedGlobalSystemforMobileCommunications, be called for short EGSM) 1012 channels and the receive frequency of 124 channels cause severe jamming, make likely normally to be received by mobile phone by the signal of 1012 channels and 124 transmissions.
For another example, for the mobile communications network of frequency-hopping system, in mobile phone communication process, the channel that mobile communications network transmission signal uses is constantly change, because described channel and ARFCN have corresponding corresponding relation, the ARFCN that therefore described channel is corresponding is also constantly change.When mobile phone distance base station is far away, its signal strength signal intensity received is more weak.If now use mobile phone to converse, and the display screen of mobile phone is when being in the state that screen lights, when the channel that PCLK clock signal can be disturbed is just in time channel corresponding to corresponding ARFCN, the received signal level of mobile phone and the value of received signal quality can significantly rise moment.If transmitting power cannot be strengthened at the time slot of current ARFCN in time in base station, just can cause occurring that mobile phone occurs that speech quality sharply declines instantaneously, the even phenomenon of call drop.
For solving the above-mentioned problems in the prior art, the technical scheme that the embodiment of the present invention adopts is changed by the absolute wireless channel numbering that the channel being arranged to use according to next time slot data to be received by the PCLK clock signal frequency of the display screen not carrying RAM is corresponding, the interference that the high order harmonic component can eliminating PCLK clock signal causes for the channel that ARFCN is corresponding, make travelling carriage normally can receive the signal of mobile communications network, therefore, effectively can improve the sensitivity of travelling carriage, promote the experience of user.
For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail specific embodiments of the invention below in conjunction with accompanying drawing.
Fig. 1 shows a kind of flow chart improving the method for travelling carriage sensitivity in the embodiment of the present invention.The method of raising travelling carriage sensitivity as shown in Figure 1, can comprise:
Step S11: the first pixel clock signal obtaining travelling carriage display screen ancillary equipment.
In concrete enforcement, the first pixel clock signal PCLK1 of travelling carriage display screen ancillary equipment is sent by the communication processor in travelling carriage.Wherein, the first pixel clock signal PCLK1 can be obtained by multiple means, such as, can obtain the first pixel clock signal PCLK1, and obtain the frequency of the first pixel clock signal PCLK1 by obtaining CLK structure.
Step S12: obtain the channel that mobile station receiver next time slot data to be received use.
In concrete enforcement, after the cellular cell in mobile station login mobile communications network, when setting up special connection or switching between cellular cell, the frequency hop sequences in Preset Time can be drawn according to the broadcast message received and signaling.Wherein, the communication processor in travelling carriage by the frequency hop sequences in the described Preset Time that draws, by searching stored frequency hop sequences, just can obtain the frequency that next time slot data to be received use.According to the corresponding relation between channel and frequency, by obtaining the frequency that next time slot data to be received use, the channel that next time slot data to be received use just can be obtained.
Step S13: judge the channel that obtains whether within the scope of the channel of the first pixel clock signal interference of described travelling carriage display screen ancillary equipment.
In concrete enforcement, containing abundant high order harmonic component in the first pixel clock signal PCLK1 of the application processor transmission of travelling carriage, described high order harmonic component can cause interference to the corresponding channel of mobile radio communication.Because each ARFCN correspond to a pair uplink and downlink channel, that is to say the physical channel in mobile communications network.Therefore, by obtaining the ARFCN that next time slot data to be received use, just can determine whether obtained channel is the channel that the first pixel clock signal PCLK1 disturbs.
In concrete enforcement, the high order harmonic component of the first pixel clock signal PCLK1 can cause interference to the sensitivity of mobile station receiver, such as: when the frequency of the first pixel clock signal PCLK1 is 27.428571MHz and travelling carriage display screen is in illuminating state, the ARFCN that the high order harmonic component of 27.428571MHz drops on EGSM is just within the bandwidth of the receive frequency of the channel of 1012 and 124 correspondences, therefore, the first pixel clock signal PCLK1 can cause serious interference to the channel that ARFCN is 1012 and 124 correspondences.
In concrete enforcement, because the frequency of the first pixel clock signal PCLK1 has phase noise, also namely the frequency of the first pixel clock signal PCLK1 not at every moment stably maintains 27.428571MHz, but can fluctuate at 27.428571MHz, as can be seen here, first pixel clock signal PCLK1 also may cause interference to the adjacent channel that ARFCN is the channel of 1012 and 124 correspondences, therefore, in order to reduce the interference that the first pixel clock signal PCLK1 causes channel as much as possible, the preset range of the ARFCN that channel that the first pixel clock signal PCLK1 can affect is corresponding can be determined.Such as: when the first pixel clock signal PCLK1 equals 27.428571MHz, the ARFCN range set that next time slot data to be received for mobile station receiver can be used is 1007 ~ 1017 and 120 ~ 124.
In concrete enforcement, the scope of the channel that the first pixel clock signal of described travelling carriage display screen ancillary equipment can disturb can be determined by the frequency of described first pixel clock signal and phase noise.
Step S14: when the channel judging to obtain is within the scope of the channel that described first pixel clock signal can disturb, use described second pixel clock signal as the clock signal of described travelling carriage display screen ancillary equipment.In concrete enforcement, the first pixel clock signal PCLK1 sent due to application processor can cause interference to the channel that mobile communications network uses, and has had a strong impact on the sensitivity of travelling carriage.Therefore, when the channel that next the time slot data to be received obtained use drops within the scope of the channel that the first pixel clock signal can disturb, the second pixel clock signal PCLK2 can be used as the clock signal of described travelling carriage display screen ancillary equipment.In concrete enforcement, the change in order to avoid clock signal causes travelling carriage display screen to cause smear or jitter phenomenon, and the frequency of the second pixel clock signal PCLK2 can close to the frequency of the first pixel clock signal PCLK1.
In concrete enforcement, the smear of the travelling carriage display screen caused in order to the change thoroughly eliminating PCLK clock signal or jitter phenomenon, when being the frequency close to the first pixel clock signal PCLK1 by the set of frequency of the second pixel clock signal PCLK2, simultaneously by being optimized the display driver of display screen, can thoroughly eliminate shake and the motion blur phenomenon of screen display.
In concrete enforcement, for reducing the interference caused channel further, the method for the raising travelling carriage sensitivity in the embodiment of the present invention, can also adopt following steps:
Step S15: when the channel judging to obtain is not within the scope of the channel of described first pixel clock signal interference, use described first pixel clock signal as the clock signal of described travelling carriage display screen ancillary equipment.
In concrete enforcement, when the channel that next time slot data that the mobile station receiver obtained is to be received use is not within the scope of the channel that the first pixel clock signal PCLK1 disturbs, first pixel clock signal can not cause interference by the channel that uses of next time slot data to be received to mobile station receiver, therefore, the first pixel clock signal PCLK1 of acquiescence can be used as the clock signal of described travelling carriage display screen ancillary equipment.Therefore, by arranging two PCLK clock signals, when the channel that next time slot data to be received use drops within the range of channels that the first pixel clock signal PCLK1 can affect, the second pixel clock signal PCLK2 can be used as the PCLK clock signal of travelling carriage display screen, otherwise, then the first pixel clock signal PCLK1 can be used as the PCLK clock signal of travelling carriage display screen.Therefore, effectively can reduce the interference that clock signal causes for the channel of mobile radio communication, thus effectively can improve the sensitivity of travelling carriage.
Fig. 2 shows a kind of structural representation improving the device of travelling carriage sensitivity in the embodiment of the present invention.The device of raising travelling carriage sensitivity as shown in Figure 2, can comprise the first signal generation unit 21, secondary signal generation unit 22, acquiring unit 23, judging unit 24 and the first control unit 25.First signal generation unit 21, secondary signal generation unit 22 and judging unit 24 are connected with the first control unit 25 respectively, and judging unit 24 is also connected with acquiring unit 23.Wherein:
First signal generation unit 21, is suitable for the first pixel clock signal producing travelling carriage display screen ancillary equipment.
Secondary signal generation unit 22, is suitable for the second pixel clock signal producing travelling carriage display screen ancillary equipment.
Acquiring unit 23, is suitable for the channel that acquisition mobile station receiver next time slot data to be received use.
Judging unit 24, within the scope being suitable for judging the channel whether channel that described acquiring unit 23 obtains can disturb at the first pixel clock signal of described travelling carriage display screen ancillary equipment.
First control unit 25, be suitable for when described judging unit 24 judges that the channel that obtains is within the scope of the channel of described first pixel clock signal interference, the second pixel clock signal of the described travelling carriage display screen ancillary equipment using described secondary signal generation unit 22 to produce is as the clock signal of described travelling carriage display screen ancillary equipment.
In concrete enforcement, the device of described raising travelling carriage sensitivity can also comprise the second control unit 26, second control unit 26 and be connected with judging unit 24 with the first signal generation unit 21, secondary signal generation unit 22 respectively.
Second control unit 26, be suitable for when judging unit 24 judges that the channel that obtains is not within the scope of the channel of described first pixel clock signal interference, the first pixel clock signal using the first signal generation unit 21 to produce is as the clock signal of described travelling carriage display screen ancillary equipment.
Fig. 3 shows the structural representation of a kind of judging unit in the embodiment of the present invention.Judging unit as shown in Figure 3, can comprise the first acquisition subelement 31, second acquisition subelement 32 and judgment sub-unit 33, first acquisition subelement 31, second acquisition subelement 32 is connected with judgment sub-unit 33 respectively.Wherein:
First obtains subelement 31, is suitable for obtaining the absolute wireless channel numbering that the channel of next time slot data use to be received is corresponding.
Second obtains subelement 32, is suitable for obtaining the absolute wireless channel numbering that the channel of described first pixel clock signal interference is corresponding.
Judgment sub-unit 33, be suitable for when first obtain absolute wireless channel numbering corresponding to channel that next time slot data to be received that subelement 31 obtains use obtain within the scope of absolute wireless channel numbering corresponding to the scope of the channel of the described first pixel clock signal interference that subelement 32 obtains second time, judge that channel that next frame data to be received use is the channel of described first pixel clock signal interference.
In concrete enforcement, the frequency of described second pixel clock signal is close to the frequency of described first pixel clock signal.
The embodiment of the present invention additionally provides a kind of travelling carriage, can comprise the device of the raising travelling carriage sensitivity in above-described embodiment.
The method and apparatus of the raising travelling carriage sensitivity in the embodiment of the present invention, has been described in detail based on GSM network.Be understandable that, the method and apparatus of the raising travelling carriage sensitivity in the embodiment of the present invention, not only goes for GSM network, also goes for other mobile communications network, as CDMA, WCDMA, TD-LTE etc.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
Done detailed introduction to the method and system of the embodiment of the present invention above, the present invention is not limited to this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (11)
1. improve a method for travelling carriage sensitivity, it is characterized in that, comprising:
Obtain the first pixel clock signal of travelling carriage display screen ancillary equipment;
Obtain the channel that mobile station receiver next time slot data to be received use;
Within the scope judging the channel whether channel that obtains can disturb at the first pixel clock signal of described travelling carriage display screen ancillary equipment;
When the channel judging to obtain is within the range of channels that described first pixel clock signal can disturb, use described second pixel clock signal as the clock signal of described travelling carriage display screen ancillary equipment.
2. the method for raising travelling carriage according to claim 1 sensitivity, is characterized in that, the scope of the channel that the first pixel clock signal of described travelling carriage display screen ancillary equipment can disturb is determined by the frequency of described first pixel clock signal and phase noise.
3. the method for raising travelling carriage according to claim 1 sensitivity, it is characterized in that, also comprise: when the channel judging to obtain is not within the range of channels that described first pixel clock signal can disturb, use described first pixel clock signal as the clock signal of described travelling carriage display screen ancillary equipment.
4. the method for raising travelling carriage according to claim 1 sensitivity, it is characterized in that, whether the channel that described judgement obtains is within the scope of the channel of described first pixel clock signal interference, comprise: when absolute wireless channel numbering corresponding to obtained channel is within the scope of absolute wireless channel numbering corresponding to the scope of the channel that described first pixel clock signal can disturb, within the scope judging the channel that the channel that obtains can disturb at described first pixel clock signal.
5. the method for raising travelling carriage according to claim 1 sensitivity, is characterized in that, the frequency of described second pixel clock signal is close to the frequency of described first pixel clock signal.
6. improve a device for travelling carriage sensitivity, it is characterized in that, comprising:
First signal generation unit, is suitable for the first pixel clock signal producing travelling carriage display screen ancillary equipment;
Secondary signal generation unit, is suitable for the second pixel clock signal producing travelling carriage display screen ancillary equipment;
Acquiring unit, is suitable for the channel that acquisition mobile station receiver next time slot data to be received use;
Judging unit, within the scope being suitable for judging the channel whether channel that described acquiring unit obtains can disturb at the first pixel clock signal of described travelling carriage display screen ancillary equipment;
First control unit, be suitable for when described judging unit judges that the channel that obtains is within the scope of the channel that described first pixel clock signal can disturb, the second pixel clock signal of the described travelling carriage display screen ancillary equipment using described secondary signal generation unit to produce is as the clock signal of described travelling carriage display screen ancillary equipment.
7. the device of raising travelling carriage according to claim 6 sensitivity, is characterized in that, the scope of the channel that the first pixel clock signal of described travelling carriage display screen ancillary equipment can disturb is determined by the frequency of described first pixel clock signal and phase noise.
8. the device of raising travelling carriage according to claim 6 sensitivity, it is characterized in that, also comprise: the second control unit, be suitable for when described judging unit judges that the channel that obtains is not within the range of channels that described first pixel clock signal can disturb, the first pixel clock signal using described first signal generation unit to produce is as the clock signal of described travelling carriage display screen ancillary equipment.
9. the device of raising travelling carriage according to claim 6 sensitivity, is characterized in that, described judging unit, comprising:
First obtains subelement, is suitable for obtaining the absolute wireless channel numbering that the channel of mobile station receiver next time slot data use to be received is corresponding;
Second obtains subelement, is suitable for obtaining the scope of absolute wireless channel numbering corresponding to the scope of channel that described first pixel clock signal can disturb;
Judgment sub-unit, be suitable for when first obtain absolute wireless channel numbering corresponding to channel that the mobile station receiver that obtains of subelement next time slot data to be received use obtain within the scope of absolute wireless channel numbering corresponding to the scope of the channel that described first pixel clock signal that subelement obtains can disturb second time, judge that the channel that next time slot data to be received use is the channel that described first pixel clock signal can disturb.
10. the device of raising travelling carriage according to claim 6 sensitivity, is characterized in that, the frequency of described second pixel clock signal is close to the frequency of described first pixel clock signal.
11. 1 kinds of travelling carriages, is characterized in that, comprise the device of the raising travelling carriage sensitivity described in any one of claim 6-10.
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| CN201410308960.4A CN105337633A (en) | 2014-06-30 | 2014-06-30 | Mobile station, method and device for improving sensitivity of mobile station |
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