WO2018113254A1 - 一种传输信号的展频解码方法及显示装置 - Google Patents

一种传输信号的展频解码方法及显示装置 Download PDF

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Publication number
WO2018113254A1
WO2018113254A1 PCT/CN2017/091886 CN2017091886W WO2018113254A1 WO 2018113254 A1 WO2018113254 A1 WO 2018113254A1 CN 2017091886 W CN2017091886 W CN 2017091886W WO 2018113254 A1 WO2018113254 A1 WO 2018113254A1
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Prior art keywords
frequency
input signal
decoding
spread spectrum
spread
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PCT/CN2017/091886
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English (en)
French (fr)
Inventor
曾德康
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HKC Co Ltd
Chongqing HKC Optoelectronics Technology Co Ltd
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HKC Co Ltd
Chongqing HKC Optoelectronics Technology Co Ltd
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Priority to US16/471,128 priority Critical patent/US10979098B2/en
Publication of WO2018113254A1 publication Critical patent/WO2018113254A1/zh
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
    • 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
    • H04B1/69—Spread spectrum techniques
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/7073—Direct sequence modulation synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709709—Methods of preventing interference

Definitions

  • the present application relates to the field of electronic technologies, and in particular, to a spread spectrum decoding method and a display device for transmitting signals.
  • EMI electromagnetic interference
  • Spread spectrum technology is the most economical and most effective solution to reduce EMI, where spread spectrum technology refers to spread spectrum (Spread Spectrum technology, a commonly used wireless communication technology, is capable of adjusting and demodulating a fixed input frequency of a high-speed transmission signal in a regular cycle.
  • the data signals of thin film transistor liquid crystal displays are high-speed transmission signals, and relatively low-voltage differential signals (Low-Voltage) Differential Signaling, LVDS), signals transmitted by the high-definition digital display interface (V-by-One), signals transmitted by the high-speed serial interface (mini-LVDS), and signals transmitted by the universal serial interface (USIT).
  • the spread spectrum technology can effectively reduce the problem of excessive EMI radiation energy, it will make it difficult for the timing controller (TCON) to receive the high-speed transmission signal after the spread spectrum adjustment, and there is a spread spectrum decoding error in the transmission signal. Causes the risk of displaying noise.
  • the embodiment of the present application provides a spread spectrum decoding method and a display device for transmitting signals, which can not only effectively reduce the EMI radiation energy, but also enable the fixed input signal after the spread spectrum adjustment to be easily received, and also avoid the decoding error due to the spread spectrum.
  • the resulting display noise can not only effectively reduce the EMI radiation energy, but also enable the fixed input signal after the spread spectrum adjustment to be easily received, and also avoid the decoding error due to the spread spectrum. The resulting display noise.
  • an embodiment of the present application provides a spread spectrum decoding method for transmitting a signal, where the method includes
  • the decoding frequency is Add or subtract a first-order preset to adjust the frequency value to obtain a new decoding frequency
  • the new decoding frequency is taken as the updated decoding frequency.
  • an embodiment of the present application provides a display device, where the display device includes
  • a storage unit for storing program instructions
  • a processing unit coupled to the display panel and the storage unit, for calling and executing the program instruction to perform the following steps:
  • the decoding frequency is Add or subtract a first-order preset to adjust the frequency value to obtain a new decoding frequency
  • the new decoding frequency is taken as the updated decoding frequency.
  • an embodiment of the present application provides a display device, where the display device includes
  • a first acquiring unit configured to acquire a fixed input frequency of an input signal to be subjected to the spread spectrum processing, and use the fixed input frequency as a decoding frequency
  • a first calculating unit configured to calculate, according to the input frequency, a number N of cycles of the input signal in a preset time range, where the number of cycles N is an integer greater than or equal to 1, wherein each cycle corresponds to a corresponding exhibition
  • the frequency of the input frequency, the preset time range is less than half of the spread spectrum mediation period, and the spread spectrum mediation period is a period of performing the spread spectrum processing on the input signal;
  • a determining unit configured to determine, in the preset time range, whether a ratio of a number of periods corresponding to the spread frequency input frequency greater than or less than the decoding frequency to the period number N is greater than or equal to a preset percentage ;
  • an adjusting unit configured to: if the ratio of the number of periods corresponding to the spread frequency of the decoding frequency greater than or less than the decoding frequency to the number of cycles N is greater than or equal to a preset percentage, within the preset time range, Adding or subtracting the decoding frequency to a first-order preset adjustment frequency value to obtain a new decoding frequency;
  • an updating unit configured to use the new decoding frequency as the updated decoding frequency.
  • the embodiment of the present application can not only effectively reduce the EMI radiation energy, but also enable the fixed input signal after the spread spectrum adjustment to be easily received, avoid display noise caused by the spread spectrum decoding error, and improve the high-speed transmission signal in the spread spectrum modulation and demodulation.
  • the precision in the process reduces manufacturing costs and increases the applicability of spread spectrum technology.
  • FIG. 1 is a schematic flowchart of a spread spectrum decoding method for transmitting a signal according to an embodiment of the present application
  • 2a is a waveform diagram of a spread spectrum in an embodiment of the present application.
  • 2b is another spread spectrum waveform diagram in the embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a spread spectrum decoding method for transmitting a signal according to another embodiment of the present application
  • FIG. 4 is a schematic flow chart of the sub-steps of step S204 of Figure 3;
  • FIG. 5 is a schematic flow chart of the sub-steps of step S301 in Figure 4;
  • FIG. 6 is a schematic block diagram of a terminal provided by an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a terminal according to another embodiment of the present application.
  • Figure 8 is a schematic block diagram of a subunit of the adjustment unit 204 of Figure 7;
  • FIG. 9 is a schematic block diagram of a subunit of the second obtaining unit 301 of FIG. 8;
  • FIG. 10 is a schematic block diagram of a display device according to an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a terminal according to another embodiment of the present application.
  • FIG. 1 a flowchart of a method for decoding a spread spectrum of a transmission signal is provided in an embodiment of the present application.
  • the method shown in the figure may include the following steps.
  • Step S101 acquiring a fixed input frequency of the input signal to be subjected to the spread spectrum processing, and using the fixed input frequency as the decoding frequency.
  • the spread spectrum function will adjust the fixed input frequency of the high-speed transmission input signal according to a regular cycle.
  • low-voltage differential signals used in TFT liquid crystal displays (Low-Voltage) Differential Signaling, LVDS) transmits signals at high speed.
  • the fixed input frequency of the LVDS signal can be 75 MHz, and the spread spectrum adjustment frequency can be 100 kHz.
  • the current universal spread spectrum mediation change frequency can reach 200Hz or even higher.
  • the maximum floating range percentage that allows the fixed input frequency variation can be plus or minus 2%, that is, the input frequency varies from 73.5 MHz to 76.5 MHz.
  • Step S102 Calculate, according to the fixed input frequency, a number N of cycles of the input signal in a preset time range, where the number of cycles N is an integer greater than or equal to 1, wherein each cycle corresponds to a corresponding spread spectrum
  • the preset time range is less than half of the spread spectrum adjustment period
  • the spread spectrum adjustment period is a period of performing the spread spectrum processing on the input signal.
  • the period of the input signal can be obtained according to the fixed input frequency, so that the number N of the periods of the input signal in the preset time range can be obtained, where N is an integer greater than or equal to 1.
  • the fixed input frequency of the LVDS signal can be 75 MHz
  • the spread spectrum mediation change frequency can be 100 kHz.
  • the spread spectrum adjustment period is a period for performing the spread spectrum processing on the input signal
  • the spread spectrum adjustment period T can be 100 ⁇ s.
  • the input signal of N cycles is included in the preset time range t1.
  • the preset time range t1 is less than half of the spread spectrum mediation period T.
  • Step S103 Determine whether a ratio of the number of periods corresponding to the spread frequency input frequency of the decoding frequency and the number of cycles N is greater than or equal to a preset percentage in the preset time range.
  • the input signals after the spread spectrum received in different periods are different, and the number of cycles corresponding to the received signal after the received spread spectrum is greater than the number of cycles. If the ratio of N is greater than or equal to the preset percentage, then the input signal after the spread spectrum is mostly too large. At this time, only the decoding frequency is increased correspondingly, so that the spread spectrum decoding can be more accurate and the display noise is reduced. Similarly, if the ratio of the number of periods corresponding to the received spread spectrum input signal to the decoding frequency is less than or equal to the preset percentage, then the input signal after the spread spectrum is mostly biased.
  • the decoding frequency Small, at this time only the corresponding reduction of the decoding frequency, can be more accurate spread spectrum decoding, reducing the occurrence of display noise. Therefore, it is necessary to compare the decoding frequency with the input frequency after the spread spectrum, and further judge the comparison result.
  • the preset percentage is greater than fifty percent.
  • Step S104 if, within the preset time range, the ratio of the number of periods corresponding to the frequency-by-spread input frequency of the decoding frequency to the number of cycles N is greater than or equal to a preset percentage, The decoding frequency is added or subtracted by a first-order preset adjustment frequency value to obtain a new decoding frequency.
  • each preset time range t1 may correspond to a first-order preset adjustment frequency value, and each preset preset adjustment frequency value may be correspondingly set according to actual conditions.
  • the period of the LVDS signal is about 13.3 ns, so that the preset time range t1 packet is known. 37.6 cycles, ie about 40 cycles, where N is equal to 40. If the preset percentage is 60% at this time, then at this time, as long as the input frequency after the received spread spectrum is greater than or equal to 24 cycles is greater than the decoding frequency, the decoding frequency is added with the first-order preset adjustment frequency. Value to get a new decoding frequency. Similarly, as long as the input frequency after receiving the spread spectrum is greater than or equal to 24 cycles is smaller than the decoding frequency, the decoding frequency is decremented by the first-order preset adjustment frequency value to obtain a new decoding frequency.
  • Step S105 the new decoding frequency is taken as the updated decoding frequency.
  • the original decoding frequency needs to be updated.
  • the obtained new decoding frequency is the updated decoding frequency, so that the subsequent spread spectrum decoding can be continued, that is, the subsequent reception is guaranteed.
  • the input signal can be spread-spectrum decoded in the same way to ensure the display effect and avoid the display noise.
  • FIG. 3 another embodiment of the present application provides a schematic flowchart of a spread spectrum decoding method for transmitting a signal.
  • the method shown in the figure may include the following steps.
  • Step S201 acquiring a fixed input frequency of the input signal to be subjected to the spread spectrum processing, and using the fixed input frequency as the decoding frequency.
  • Step S202 calculating, according to the fixed input frequency, a number N of cycles of the input signal in a preset time range, where the number of cycles N is an integer greater than or equal to 1, wherein each cycle corresponds to a corresponding spread spectrum
  • the preset time range is less than half of the spread spectrum adjustment period
  • the spread spectrum adjustment period is a period of performing the spread spectrum processing on the input signal.
  • Step S202 ′ calculating a ratio of the spread spectrum adjustment period to the preset time range to obtain an adjustment order M, wherein the adjustment order M is an integer greater than or equal to 2, and each adjustment step corresponds to a first order pre- Set the frequency value.
  • the fixed input frequency of the LVDS signal is 75 MHz
  • the spread spectrum adjustment frequency is 100 kHz
  • the spread spectrum adjustment period T is 100 ⁇ s
  • the preset time range t1 is 500 ns, according to the spread spectrum
  • the mediation period T and the preset time range t1 can result in the adjustment order M being 200.
  • Step S203 determining whether the ratio of the number of cycles corresponding to the spread frequency of the decoded frequency and the number of cycles N is greater than or equal to a preset percentage in the preset time range.
  • Step S204 if, within the preset time range, the ratio of the number of cycles corresponding to the spread frequency input frequency of the decoding frequency and the number of cycles N is greater than or equal to a preset percentage, The decoding frequency is added or subtracted by a first-order preset adjustment frequency value to obtain a new decoding frequency.
  • step S204 specifically includes:
  • Step S301 obtaining an amplitude value of the spread spectrum input signal.
  • the maximum floating range percentage that allows the fixed input frequency to change can be plus or minus 2%, that is, the input frequency is in the range of 73.5 MHz to 76.5 MHz. The change is made, so the amplitude value is 3MHz.
  • step S301 specifically includes
  • Step S401 obtaining a maximum input signal frequency Fmax of the spread spectrum input signal.
  • Fmax can be 73.5MHz.
  • Step S402 obtaining a minimum input signal frequency Fmin of the spread spectrum input signal.
  • Fmin can be 76.5MHz.
  • Step S403 the difference between the maximum input signal frequency and the minimum input signal frequency is taken as an amplitude value.
  • the amplitude value can be 3MHz.
  • Step S302 calculating a ratio of the amplitude value to the adjustment order M to obtain an average adjustment frequency value of each order.
  • each 100th order corresponds to one amplitude value, that is, the average adjustment frequency value of each order is 0.03 MHz.
  • Step S303 adding or subtracting the first-order average adjustment frequency value to the decoding frequency to obtain a new decoding frequency.
  • adding a first-order average adjustment frequency value that is, increasing the value of the original decoding frequency by 0.03 MHz
  • reducing the first-order average adjustment frequency value that is, subtracting 0.03 MHz from the value of the original decoding frequency.
  • the fixed input frequency of the LVDS signal is 75MHz
  • the spread spectrum adjustment frequency is 100kHz
  • the spread spectrum adjustment period T is 100 ⁇ s
  • the preset time range t1 is 500ns
  • the original decoding frequency is 75MHz, and there is 500ns in 500ns
  • the new decoding frequency obtained is 75.03 MHz.
  • the new decoding frequency obtained is 74.97MHz.
  • Step S205 the new decoding frequency is used as the updated decoding frequency.
  • the original decoding frequency needs to be updated.
  • the obtained new decoding frequency is the updated decoding frequency, so that the subsequent spread spectrum decoding can be continued.
  • FIG. 6 is a schematic block diagram of a terminal according to an embodiment of the present application.
  • the terminal 100 as shown in the figure may include
  • the first obtaining unit 101 is configured to acquire a fixed input frequency of an input signal to be subjected to the spread spectrum processing, and use the fixed input frequency as a decoding frequency.
  • the spread spectrum function will adjust the fixed input frequency of the high-speed transmission input signal according to a regular cycle.
  • low-voltage differential signals used in TFT liquid crystal displays (Low-Voltage) Differential Signaling, LVDS) transmits signals at high speed.
  • the fixed input frequency of the LVDS signal can be 75 MHz, and the spread spectrum adjustment frequency can be 100 kHz.
  • the current universal spread spectrum mediation change frequency can reach 200Hz or even higher.
  • the maximum floating range percentage that allows the fixed input frequency variation can be plus or minus 2%, that is, the input frequency varies from 73.5 MHz to 76.5 MHz.
  • the first calculating unit 102 is configured to calculate, according to the fixed input frequency, a number N of cycles of the input signal in a preset time range, where the number of cycles N is an integer greater than or equal to 1, wherein each period corresponds to a corresponding spread frequency input frequency, the preset time range being less than half of the spread spectrum adjustment period, wherein the spread spectrum adjustment period is a period of performing the spread spectrum processing on the input signal.
  • the period of the input signal can be obtained according to the fixed input frequency, so that the number N of the periods of the input signal in the preset time range can be obtained, where N is an integer greater than or equal to 1.
  • the fixed input frequency of the LVDS signal can be 75 MHz
  • the spread spectrum mediation change frequency can be 100 kHz.
  • the spread spectrum adjustment period is a period for performing the spread spectrum processing on the input signal
  • the spread spectrum adjustment period T can be 100 ⁇ s.
  • the input signal of N cycles is included in the preset time range t1.
  • the preset time range t1 is less than half of the spread spectrum mediation period T.
  • the determining unit 103 is configured to determine whether, in the preset time range, the ratio of the number of cycles corresponding to the spread frequency of the decoding frequency greater than or less than the decoding frequency to the number of cycles N is greater than or equal to a preset percentage.
  • the input signals after the spread spectrum received in different periods are different, and the number of cycles corresponding to the received signal after the received spread spectrum is greater than the number of cycles. If the ratio of N is greater than or equal to the preset percentage, then the input signal after the spread spectrum is mostly too large. At this time, only the decoding frequency is increased correspondingly, so that the spread spectrum decoding can be more accurate and the display noise is reduced. Similarly, if the ratio of the number of periods corresponding to the received spread spectrum input signal to the decoding frequency is less than or equal to the preset percentage, then the input signal after the spread spectrum is mostly biased.
  • the decoding frequency Small, at this time only the corresponding reduction of the decoding frequency, can be more accurate spread spectrum decoding, reducing the occurrence of display noise. Therefore, it is necessary to compare the decoding frequency with the input frequency after the spread spectrum, and further judge the comparison result.
  • the preset percentage is greater than fifty percent.
  • the adjusting unit 104 is configured to: if the ratio of the number of cycles corresponding to the spread frequency of the decoding frequency greater than or less than the decoding frequency and the number of cycles N is greater than or equal to a preset percentage within the preset time range And adding or subtracting the decoding frequency to the first-order preset adjustment frequency value to obtain a new decoding frequency.
  • each preset time range t1 may correspond to a first-order preset adjustment frequency value, and each preset preset adjustment frequency value may be correspondingly set according to actual conditions.
  • the period of the LVDS signal is about 13.3 ns, so that the preset time range t1 packet is known. 37.6 cycles, ie about 40 cycles, where N is equal to 40. If the preset percentage is 60% at this time, then at this time, as long as the input frequency after the received spread spectrum is greater than or equal to 24 cycles is greater than the decoding frequency, the decoding frequency is added with the first-order preset adjustment frequency. Value to get a new decoding frequency. Similarly, as long as the input frequency after receiving the spread spectrum is greater than or equal to 24 cycles is smaller than the decoding frequency, the decoding frequency is decremented by the first-order preset adjustment frequency value to obtain a new decoding frequency.
  • the updating unit 105 is configured to use the new decoding frequency as the updated decoding frequency.
  • the original decoding frequency needs to be updated.
  • the obtained new decoding frequency is the updated decoding frequency, so that the subsequent spread spectrum decoding can be continued, that is, the subsequent reception is guaranteed.
  • the input signal can be spread-spectrum decoded in the same way to ensure the display effect and avoid the display noise.
  • FIG. 7 is a schematic block diagram of a terminal according to another embodiment of the present application.
  • the terminal 200 as shown may include
  • the first obtaining unit 201 is configured to acquire a fixed input frequency of the input signal to be subjected to the spread spectrum processing, and use the fixed input frequency as the decoding frequency.
  • the first calculating unit 202 is configured to calculate, according to the input frequency, a number N of cycles of the input signal in a preset time range, where the number of cycles N is an integer greater than or equal to 1, wherein each cycle corresponds to one
  • the corresponding spread frequency input frequency is less than half of the spread spectrum adjustment period, and the spread spectrum adjustment period is a period for performing the spread spectrum processing on the input signal.
  • the second calculating unit 202 ′ is configured to calculate a ratio of the spread spectrum adjustment period to the preset time range to obtain an adjustment order M, where the adjustment order M is an integer greater than or equal to 2, and each adjustment step Both correspond to a preset adjustment frequency value.
  • the fixed input frequency of the LVDS signal is 75 MHz
  • the spread spectrum adjustment frequency is 100 kHz
  • the spread spectrum adjustment period T is 100 ⁇ s
  • the preset time range t1 is 500 ns, according to the spread spectrum
  • the mediation period T and the preset time range t1 can be obtained as 200 adjustment orders M.
  • the determining unit 203 is configured to determine whether, in the preset time range, the ratio of the number of cycles corresponding to the spread frequency of the decoding frequency greater than or less than the decoding frequency to the number of cycles N is greater than or equal to a preset percentage.
  • the adjusting unit 204 is configured to: if the ratio of the number of cycles corresponding to the spread frequency of the decoding frequency greater than or less than the decoding frequency to the number of cycles N is greater than or equal to a preset percentage within the preset time range And adding or subtracting the decoding frequency to the first-order preset adjustment frequency value to obtain a new decoding frequency.
  • the adjusting unit 204 specifically includes:
  • the second obtaining unit 301 is configured to obtain an amplitude value of the spread spectrum input signal. For example, when the fixed input frequency of the LVDS signal is 75 MHz and the spread spectrum adjustment frequency is 100 kHz, the maximum floating range percentage that allows the fixed input frequency to change can be plus or minus 2%, that is, the input frequency is in the range of 73.5 MHz to 76.5 MHz. The change is made, so the amplitude value is 3MHz.
  • the second obtaining unit 301 specifically includes
  • the first processing unit 401 is configured to obtain a maximum input signal frequency Fmax of the spread-spectrum input signal. Among them, Fmax can be 73.5MHz.
  • the second processing unit 402 is configured to acquire a minimum input signal frequency Fmin of the spread-spectrum input signal.
  • Fmin can be 76.5MHz.
  • the determining unit 403 is configured to use a difference between the maximum input signal frequency and the minimum input signal frequency as an amplitude value.
  • the amplitude value can be 3MHz.
  • the third calculating unit 302 is configured to calculate a ratio of the amplitude value to the adjustment order M to obtain an average adjusted frequency value of each step.
  • each 100th order corresponds to one amplitude value, that is, the average adjustment frequency value of each order is 0.03 MHz.
  • the adding and subtracting unit 303 is configured to add or subtract the first-order average adjusted frequency value to the decoding frequency to obtain a new decoding frequency.
  • adding a first-order average adjustment frequency value that is, increasing the value of the original decoding frequency by 0.03 MHz
  • reducing the first-order average adjustment frequency value that is, subtracting 0.03 MHz from the value of the original decoding frequency.
  • the fixed input frequency of the LVDS signal is 75MHz
  • the spread spectrum adjustment frequency is 100kHz
  • the spread spectrum adjustment period T is 100 ⁇ s
  • the preset time range t1 is 500ns
  • the original decoding frequency is 75MHz, and there is 500ns in 500ns
  • the new decoding frequency obtained is 75.03 MHz.
  • the new decoding frequency obtained is 74.97MHz.
  • the updating unit 205 is configured to use the new decoding frequency as the updated decoding frequency.
  • the original decoding frequency needs to be updated.
  • the obtained new decoding frequency is the updated decoding frequency, so that the subsequent spread spectrum decoding can be continued.
  • the embodiment of the present application further provides a display device, which includes a display panel 501 and a control unit 502.
  • the display device 500 further includes
  • a first acquiring unit 601 configured to acquire a fixed input frequency of an input signal to be subjected to the spread spectrum processing, and use the fixed input frequency as a decoding frequency;
  • the first calculating unit 602 is configured to calculate, according to the fixed input frequency, a number N of cycles of the input signal in a preset time range, where the number of cycles N is an integer greater than or equal to 1, wherein each period corresponds to a corresponding spread frequency input frequency, the preset time range is less than half of the spread spectrum mediation period, and the spread spectrum mediation period is a cycle for performing the spread spectrum processing on the input signal;
  • the determining unit 603 is configured to determine whether, in the preset time range, the ratio of the number of cycles corresponding to the spread frequency of the decoding frequency greater than or less than the decoding frequency to the number of cycles N is greater than or equal to a preset percentage;
  • the adjusting unit 604 is configured to: if the ratio of the number of periods corresponding to the spread frequency of the decoding frequency greater than or less than the decoding frequency and the number of cycles N is greater than or equal to a preset percentage within the preset time range Adding or subtracting the decoding frequency to a first-order preset adjustment frequency value to obtain a new decoding frequency;
  • the updating unit 605 is configured to use the new decoding frequency as the updated decoding frequency.
  • the display panel 501 can be, for example, a liquid crystal display panel, an OLED display panel, a QLED display panel, a curved display panel, or other types of display panels, and is not specifically limited herein.
  • FIG. 11 is a schematic block diagram of a terminal according to another embodiment of the present application.
  • the terminal in this embodiment as shown may include one or more processors 701; one or more input devices 702, one or more output devices 703, and memory 704.
  • the above processor 701, input device 702, output device 703, and memory 704 are connected by a bus 705.
  • the memory 702 is configured to store instructions, and the processor 701 Instructions for executing memory 702 storage.
  • the processor 701 is configured to acquire a fixed input frequency of the input signal to be subjected to the spread spectrum processing, and use the fixed input frequency as the decoding frequency; and calculate the number N of the input signal in the preset time range according to the fixed input frequency.
  • the number of cycles N is an integer greater than or equal to 1; determining whether the ratio of the number of cycles corresponding to the spread frequency of the decoded frequency greater than or less than the decoding frequency to the number of cycles N is greater than a preset time range Or equal to a preset percentage; if yes, the decoding frequency is added or subtracted by a first-order preset adjustment frequency value to obtain a new decoding frequency; the new decoding frequency is used as an updated decoding frequency;
  • the ratio of the spread spectrum adjustment period to the preset time range is obtained to obtain an adjustment order M, wherein the adjustment order M is an integer greater than or equal to 2, and each adjustment step corresponds to a first-order preset adjustment frequency value.
  • the processor 701 is specifically configured to obtain an amplitude value of the spread spectrum input signal, calculate a ratio of the amplitude value to the adjustment order M to obtain an average adjusted frequency value of each order; and the decoding frequency Add or subtract the first-order average to adjust the frequency value to get a new decoding frequency.
  • the processor 701 is further configured to acquire a maximum input signal frequency of the spread-spectrum input signal, obtain a minimum input signal frequency of the spread-spectrum input signal, and compare a difference between the maximum input signal frequency and the minimum input signal frequency. As the amplitude value.
  • the so-called processor 701 may be a central processing unit (Central Processing Unit, CPU), the processor can also be other general purpose processors, digital signal processors (DSPs), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field-Programmable) Gate Array, FPGA) Or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the input device 702 may include a touch panel, a fingerprint sensor (for collecting fingerprint information of the user and direction information of the fingerprint), a microphone, and the like, and the output device 703 may include a display (LCD or the like), a speaker, and the like.
  • a fingerprint sensor for collecting fingerprint information of the user and direction information of the fingerprint
  • a microphone for collecting fingerprint information of the user and direction information of the fingerprint
  • the output device 703 may include a display (LCD or the like), a speaker, and the like.
  • the memory 704 can include a read only memory and a random access memory, and is directed to the processor 701. Provide instructions and data. A portion of the memory 704 can also include a non-volatile random access memory. For example, the memory 704 can also store information of the device type.
  • the processor 701, the input device 702, and the output device 703, which are described in another embodiment of the present application, may perform the embodiment of the spread spectrum decoding method of the transmission signal provided by the embodiment of the present application, and another embodiment.
  • the implementation manner of the terminal described in this embodiment of the present application may also be implemented, and details are not described herein again.
  • the terminal described in another embodiment of the present application includes, but is not limited to, such as having a touch sensitive surface (eg, a touch screen display and/or a touch pad)
  • a touch sensitive surface eg, a touch screen display and/or a touch pad
  • Other portable devices such as mobile phones, laptops or tablets.
  • the device is not a portable communication device but has a touch sensitive surface (eg, a touch screen display and/or a touch pad).
  • Desktop computer is not a portable communication device but has a touch sensitive surface (eg, a touch screen display and/or a touch pad).
  • the disclosed terminal and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units in the terminal in the embodiment of the present application may be combined, divided, and deleted according to actual needs.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present application.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present application may be in essence or part of the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • Including several instructions to make a computer device may be a personal computer, server, or network device, etc.) Perform all or part of the steps of the method described in various embodiments of the present application.
  • the foregoing storage medium includes: a USB flash drive, a mobile hard disk, and a read only memory. (ROM, Read-Only Memory), random access memory (RAM, Random Access)
  • ROM Read-Only Memory
  • RAM Random Access

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Abstract

本申请实施例公开了一种传输信号的展频解码方法及显示装置，其中方法包括获取将进行展频处理的输入信号的固定输入频率，并将固定输入频率作为解码频率；根据固定输入频率计算得到输入信号在预设时间范围内的周期数N，所述周期数 N为大于或等于1的整数；判断在预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数 N的比值是否大于或等于预设百分比；若在是，将解码频率加或减一阶预设调整频率值以得到新的解码频率；将所述新的解码频率作为更新后的解码频率。

Description

一种传输信号的展频解码方法及显示装置
技术领域
本申请涉及电子技术领域，尤其涉及一种传输信号的展频解码方法及显示装置。
背景技术
目前，所有会产生频率信号的电子组件都是潜在的电磁干扰（ EMI ）源，这些信号将会影响如收音机、电视或者移动电话等电子产品的正常运作，更重要的是在高速信号传输过程中，由于高速信号存在能量反射现象，会导致EMI辐射能量过高，从而对人体产生损伤影响。
展频技术是最经济最有效地降低EMI的解决方案，其中展频技术是指扩展频谱（Spread Spectrum）技术，它是一种常用的无线通讯技术，其能够将高速传输信号的固定输入频率按照有规律的周期进行调整解调。例如，一般情况，薄膜晶体管液晶显示器（TFT-LCD）的数据信号均为高速传输信号，比较常见的有低电压差分信号（Low-Voltage Differential Signaling，LVDS）、高清数字显示接口（V-by-One）传输的信号、高速串行接口（mini-LVDS）传输的信号以及通用串行接口（USIT）传输的信号等。展频技术虽然能够有效降低EMI辐射能量过高的问题，但是会使得定时控制器（TCON）对展频调解过后的高速传输信号的接收变得较为困难，并有传输信号出现展频解码错误而造成显示噪点的风险。
发明内容
本申请实施例提供一种传输信号的展频解码方法及显示装置，不仅可以有效降低EMI辐射能量，还能够使得展频调解过后的固定输入信号易于被接收，同时还能避免因展频解码错误而造成的显示噪点。
为了实现上述目的，一方面，本申请实施例提供了一种传输信号的展频解码方法，该方法包括，
获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率；
根据所述固定输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期；
判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比；
若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率；
将所述新的解码频率作为更新后的解码频率。
为了实现上述目的，另一方面，本申请实施例提供了一种显示装置，该显示装置包括，
显示面板；
存储单元，用于存储程序指令；以及
处理单元，与所述显示面板和所述存储单元连接，用于调用并执行所述程序指令，以执行如下步骤：
获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率；
根据所述固定输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期；
判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比；
若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率；
将所述新的解码频率作为更新后的解码频率。
为了实现上述目的，另一方面，本申请实施例提供了一种显示装置，该显示装置包括，
第一获取单元，用于获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率；
第一计算单元，用于根据输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期；
判断单元，用于判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比；
调整单元，用于若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率；
更新单元，用于将所述新的解码频率作为更新后的解码频率。
本申请实施例不仅可以有效降低EMI辐射能量，还能够使得展频调解过后的固定输入信号易于被接收，避免因展频解码错误而造成的显示噪点，提高了高速传输信号在展频调制解调过程中的精准度，与此同时还减少制造成本，增加了展频技术的适用性。
附图说明
为了更清楚地说明本申请实施例技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种传输信号的展频解码方法的示意流程图；
图2a是本申请实施例中的展频波形图；
图2b是本申请实施例中的另一展频波形图；
图3是本申请另一实施例提供的一种传输信号的展频解码方法的示意流程图；
图4是图3中步骤S204的子步骤的示意流程图；
图5是图4中步骤S301的子步骤的示意流程图；
图6本申请实施例提供的一种终端的示意性框图；
图7是本申请另一实施例提供的一种终端示意性框图；
图8是图7中调整单元204的子单元的示意性框图；
图9是图8中第二获取单元301的子单元的示意性框图；
图10是本申请实施例提供的一种显示装置的示意性框图；
图11是本申请另一实施例提供的一种终端示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
应当理解，当在本说明书和所附权利要求书中使用时，术语“包括”和“包含”指示所描述特征、整体、步骤、操作、元素和/或组件的存在，但并不排除一个或多个其它特征、整体、步骤、操作、元素、组件和/或其集合的存在或添加。
还应当理解，在此本申请说明书中所使用的术语仅仅是出于描述特定实施例的目的而并不意在限制本申请。如在本申请说明书和所附权利要求书中所使用的那样，除非上下文清楚地指明其它情况，否则单数形式的“一”、“一个”及“该”意在包括复数形式。还应当进一步理解，在本申请说明书和所附权利要求书中使用的术语“和/或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合，并且包括这些组合。
参见图1，是本申请实施例提供一种传输信号的展频解码方法的示意流程图，如图所示的方法可包括以下步骤，
步骤S101，获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率。
其中，展频功能会将高速传输的输入信号的固定输入频率按照有规律的周期进行调整调解。例如，一般情况下，TFT液晶显示器所使用的低电压差分信号（Low-Voltage Differential Signaling，LVDS）为高速传输信号。LVDS信号的固定输入频率可以为75MHz，展频调解变化频率可以为100kHz。展频调解变化频率越大，对展频设备的要求就越高，目前通用的展频调解变化频率的范围可以达到200Hz，甚至更高。当LVDS信号的展频调解变化频率为100kHz时，允许固定输入频率变化的最大浮动范围百分比可以为正负2％，即输入频率在73.5MHz至76.5MHz范围内进行变化。
步骤S102，根据所述固定输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期。
其中，根据固定输入频率可以得到输入信号的周期，故可以得到预设时间范围内的输入信号的所述周期数N，其中N要为大于或等于1的整数。例如，如图2a所示， LVDS信号的固定输入频率可以为75MHz，展频调解变化频率可以为100kHz，因所述展频调解周期为对所述输入信号进行展频处理的周期，故展频调解周期T可以为100μs。如图2b所示，预设时间范围t1内包括N个周期的输入信号。同时，预设时间范围t1小于展频调解周期T的一半。
步骤S103，判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比。
其中，在预设时间范围t1内，不同的周期接收到的展频后的输入信号不一样，若大于解码频率的接收到的展频后的输入信号所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，那么则说明展频后的输入信号大部分偏大，此时只有相应地增大解码频率，才能够使得展频解码更为精准，减少显示噪点的产生。同理，若小于解码频率的接收到的展频后的输入信号所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，那么则说明展频后的输入信号大部分偏小，此时只有相应地减小解码频率，才能够是的展频解码更为精准，减少显示噪点的产生。故，需要对解码频率与展频后的输入频率进行对比，并将对比结果进行进一步判断。作为可选的，所述预设百分比大于百分之五十。
步骤S104，若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率。
其中，在预设时间范围t1内，若大于解码频率的接收到的展频后的输入信号所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，那么要将所述解码频率加一阶预设调整频率值以得到新的解码频率。其中，每一个预设时间范围t1可对应一阶预设调整频率值，每一阶预设调整频率值可以根据实际情况进行相应的设定。
具体的，例如，如图2a和2b所示，当LVDS信号的固定输入频率为75MHz，预设时间范围t1为500ns时，可知LVDS信号的周期大约为13.3ns，故可知预设时间范围t1包37.6个周期，即大约40个周期，此时N等于40。若此时预设百分比为60％，那么此时，只要有大于或等于24个周期的接收到的展频后的输入频率大于解码频率，则要将所述解码频率加一阶预设调整频率值以得到新的解码频率。同理，只要有大于或等于24个周期的接收到的展频后的输入频率小于解码频率，则要将所述解码频率减一阶预设调整频率值以得到新的解码频率。
步骤S105，将所述新的解码频率作为更新后的解码频率。
其中，得到新的解码频率后，需要对原来的解码频率进行更新，此时，获得的新的解码频率即为更新后的解码频率，以方便后续的展频解码能够继续进行，即保证后续接收到的输入信号能够以相同的方法进行展频解码，以保证显示效果，避免显示噪点的产生。
参见图3，是本申请另一实施例提供一种传输信号的展频解码方法的示意流程图，如图所示的方法可包括以下步骤，
步骤S201，获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率。
步骤S202，根据所述固定输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期。
步骤S202′，计算所述展频调解周期与所述预设时间范围的比值以得到调整阶数M，所述调整阶数M为大于或等于2的整数，每一调整阶均对应有一阶预设调整频率值。
其中，如图2a和2b所示，例如，当LVDS信号的固定输入频率为75MHz，展频调解变化频率为100kHz，展频调解周期T为100μs，预设时间范围t1为500ns时，根据展频调解周期T和预设时间范围t1可得出所述调整阶数M为200个。
步骤S203，判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比。
步骤S204，若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率。
其中，作为可选的，参见图4，步骤S204具体包括，
步骤S301，获取展频后的输入信号的幅度值。其中，例如当LVDS信号的固定输入频率为75MHz，展频调解变化频率为100kHz时，允许固定输入频率变化的最大浮动范围百分比可以为正负2％，即输入频率在73.5MHz至76.5MHz范围内进行变化，故幅度值为3MHz。
作为进一步可选的，参见图5，步骤S301具体包括，
步骤S401，获取展频后的输入信号的最大输入信号频率Fmax。其中，Fmax可以为73.5MHz。
步骤S402，获取展频后的输入信号的最小输入信号频率Fmin。其中，Fmin可以为76.5MHz。
步骤S403，将所述最大输入信号频率与所述最小输入信号频率的差值作为幅度值。其中，幅度值即可以为3MHz。
步骤S302，计算所述幅度值与所述调整阶数M的比值以得到每一阶的平均调整频率值。
例如，当调整阶数M为200个时，那么可知每100阶即对应一个幅度值，即每一阶的平均调整频率值即为0.03MHz。
步骤S303，将所述解码频率加或减一阶平均调整频率值以得到新的解码频率。
其中，加一阶平均调整频率值，即在原来解码频率的数值上增加0.03MHz；减一阶平均调整频率值，即在原来解码频率的数值上减去0.03MHz。例如，当LVDS信号的固定输入频率为75MHz，展频调解变化频率为100kHz，展频调解周期T为100μs，预设时间范围t1为500ns时，若原来的解码频率为75MHz，且在500ns中有大于或等于24个周期的展频后的输入频率大于75MHz，那么得到的新的解码频率即为75.03MHz。同理，若原来的解码频率为75MHz，且在500ns中有大于或等于24个周期的展频后的输入频率小于75MHz，那么得到的新的解码频率即为74.97MHz。
步骤S205，将所述新的解码频率作为更新后的解码频率。
其中，得到新的解码频率后，需要对原来的解码频率进行更新，此时，获得的新的解码频率即为更新后的解码频率，以方便后续的展频解码能够继续进行。
参见图6，是本申请实施例提供的一种终端的示意框图，如图所示的终端100可以包括，
第一获取单元101，用于获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率。
其中，展频功能会将高速传输的输入信号的固定输入频率按照有规律的周期进行调整调解。例如，一般情况下，TFT液晶显示器所使用的低电压差分信号（Low-Voltage Differential Signaling，LVDS）为高速传输信号。LVDS信号的固定输入频率可以为75MHz，展频调解变化频率可以为100kHz。展频调解变化频率越大，对展频设备的要求就越高，目前通用的展频调解变化频率的范围可以达到200Hz，甚至更高。当LVDS信号的展频调解变化频率为100kHz时，允许固定输入频率变化的最大浮动范围百分比可以为正负2％，即输入频率在73.5MHz至76.5MHz范围内进行变化。
第一计算单元102，用于根据所述固定输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期。
其中，根据固定输入频率可以得到输入信号的周期，故可以得到预设时间范围内的输入信号的所述周期数N，其中N要为大于或等于1的整数。例如，如图2a所示， LVDS信号的固定输入频率可以为75MHz，展频调解变化频率可以为100kHz，因所述展频调解周期为对所述输入信号进行展频处理的周期，故展频调解周期T可以为100μs。如图2b所示，预设时间范围t1内包括N个周期的输入信号。同时，预设时间范围t1小于展频调解周期T的一半。
判断单元103，用于判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比。
其中，在预设时间范围t1内，不同的周期接收到的展频后的输入信号不一样，若大于解码频率的接收到的展频后的输入信号所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，那么则说明展频后的输入信号大部分偏大，此时只有相应地增大解码频率，才能够使得展频解码更为精准，减少显示噪点的产生。同理，若小于解码频率的接收到的展频后的输入信号所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，那么则说明展频后的输入信号大部分偏小，此时只有相应地减小解码频率，才能够是的展频解码更为精准，减少显示噪点的产生。故，需要对解码频率与展频后的输入频率进行对比，并将对比结果进行进一步判断。作为可选的，所述预设百分比大于百分之五十。
调整单元104，用于若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率。
其中，在预设时间范围t1内，若大于解码频率的接收到的展频后的输入信号所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，那么要将所述解码频率加一阶预设调整频率值以得到新的解码频率。其中，每一个预设时间范围t1可对应一阶预设调整频率值，每一阶预设调整频率值可以根据实际情况进行相应的设定。
具体的，例如，如图2a和2b所示，当LVDS信号的固定输入频率为75MHz，预设时间范围t1为500ns时，可知LVDS信号的周期大约为13.3ns，故可知预设时间范围t1包37.6个周期，即大约40个周期，此时N等于40。若此时预设百分比为60％，那么此时，只要有大于或等于24个周期的接收到的展频后的输入频率大于解码频率，则要将所述解码频率加一阶预设调整频率值以得到新的解码频率。同理，只要有大于或等于24个周期的接收到的展频后的输入频率小于解码频率，则要将所述解码频率减一阶预设调整频率值以得到新的解码频率。
更新单元105，用于将所述新的解码频率作为更新后的解码频率。
其中，得到新的解码频率后，需要对原来的解码频率进行更新，此时，获得的新的解码频率即为更新后的解码频率，以方便后续的展频解码能够继续进行，即保证后续接收到的输入信号能够以相同的方法进行展频解码，以保证显示效果，避免显示噪点的产生。
参见图7，是本申请另一实施例提供的一种终端示意框图，如图所示的终端200可以包括，
第一获取单元201，用于获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率。
第一计算单元202，用于根据所述输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期。
第二计算单元202′，用于计算所述展频调解周期与所述预设时间范围的比值以得到调整阶数M，所述调整阶数M为大于或等于2的整数，每一调整阶均对应有一阶预设调整频率值。
其中，如图2a和2b所示，例如，当LVDS信号的固定输入频率为75MHz，展频调解变化频率为100kHz，展频调解周期T为100μs，预设时间范围t1为500ns时，根据展频调解周期T和预设时间范围t1可得出调整阶数M为200个。
判断单元203，用于判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与周期数N的比值是否大于或等于预设百分比。
调整单元204，用于若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率。
其中，作为可选的，参见图8，所述调整单元204具体包括，
第二获取单元301，用于获取展频后的输入信号的幅度值。其中，例如当LVDS信号的固定输入频率为75MHz，展频调解变化频率为100kHz时，允许固定输入频率变化的最大浮动范围百分比可以为正负2％，即输入频率在73.5MHz至76.5MHz范围内进行变化，故幅度值为3MHz。
作为进一步可选的，参见图9，所述第二获取单元301具体包括，
第一处理单元401，用于获取展频后的输入信号的最大输入信号频率Fmax。其中，Fmax可以为73.5MHz。
第二处理单元402，用于获取展频后的输入信号的最小输入信号频率Fmin。其中，Fmin可以为76.5MHz。
确定单元403，用于将所述最大输入信号频率与所述最小输入信号频率的差值作为幅度值。其中，幅度值即可以为3MHz。
第三计算单元302，用于计算所述幅度值与所述调整阶数M的比值以得到每一阶的平均调整频率值。
例如，当调整阶数M为200个时，那么可知每100阶即对应一个幅度值，即每一阶的平均调整频率值即为0.03MHz。
加减单元303，用于将所述解码频率加或减一阶平均调整频率值以得到新的解码频率。
其中，加一阶平均调整频率值，即在原来解码频率的数值上增加0.03MHz；减一阶平均调整频率值，即在原来解码频率的数值上减去0.03MHz。例如，当LVDS信号的固定输入频率为75MHz，展频调解变化频率为100kHz，展频调解周期T为100μs，预设时间范围t1为500ns时，若原来的解码频率为75MHz，且在500ns中有大于或等于24个周期的展频后的输入频率大于75MHz，那么得到的新的解码频率即为75.03MHz。同理，若原来的解码频率为75MHz，且在500ns中有大于或等于24个周期的展频后的输入频率小于75MHz，那么得到的新的解码频率即为74.97MHz。
更新单元205，用于将所述新的解码频率作为更新后的解码频率。
其中，得到新的解码频率后，需要对原来的解码频率进行更新，此时，获得的新的解码频率即为更新后的解码频率，以方便后续的展频解码能够继续进行。
另外，参见图10，本申请实施例还提供了一种显示装置，该显示装置500包括显示面板501以及控制单元502。该显示装置500还包括，
第一获取单元601，用于获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率；
第一计算单元602，用于根据所述固定输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期；
判断单元603，用于判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比；
调整单元604，用于若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率；
更新单元605，用于将所述新的解码频率作为更新后的解码频率。
其中，显示面板501可例如为液晶显示面板、OLED显示面板、QLED显示面板、曲面显示面板或其他类型显示面板，在此不做具体限制。
参见图11，是本申请另一实施例提供的一种终端示意框图。如图所示的本实施例中的终端可以包括：一个或多个处理器701；一个或多个输入设备702，一个或多个输出设备703和存储器704。上述处理器701、输入设备702、输出设备703和存储器704通过总线705连接。存储器702用于存储指令，处理器701 用于执行存储器702存储的指令。
其中，处理器701用于获取将进行展频处理的输入信号的固定输入频率，并将固定输入频率作为解码频率；根据固定输入频率计算得到输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数；判断在预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比；若在是，将解码频率加或减一阶预设调整频率值以得到新的解码频率；将所述新的解码频率作为更新后的解码频率；还用于计算所述展频调解周期与所述预设时间范围的比值以得到调整阶数M，所述调整阶数M为大于或等于2的整数，每一调整阶均对应有一阶预设调整频率值。
进一步的，处理器701具体用于获取展频后的输入信号的幅度值；计算所述幅度值与所述调整阶数M的比值以得到每一阶的平均调整频率值；将所述解码频率加或减一阶平均调整频率值以得到新的解码频率。处理器701还具体用于获取展频后的输入信号的最大输入信号频率；获取展频后的输入信号的最小输入信号频率；将所述最大输入信号频率与所述最小输入信号频率的差值作为幅度值。
应当理解，在本申请实施例中，所称处理器701可以是中央处理单元(Central Processing Unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器 (Digital Signal Processor，DSP)、专用集成电路 (Application Specific Integrated Circuit，ASIC)、现成可编程门阵列 (Field-Programmable Gate Array，FPGA) 或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
输入设备702可以包括触控板、指纹采传感器（用于采集用户的指纹信息和指纹的方向信息）、麦克风等，输出设备703可以包括显示器（LCD等）、扬声器等。
该存储器704可以包括只读存储器和随机存取存储器，并向处理器701 提供指令和数据。存储器704的一部分还可以包括非易失性随机存取存储器。例如，存储器704还可以存储设备类型的信息。
具体实现中，本申请另一实施例中所描述的处理器701、输入设备702、输出设备703可执行本申请实施例提供的传输信号的展频解码方法的实施例和另一实施例中所描述的实现方式，也可执行本申请实施例所描述的终端的实现方式，在此不再赘述。
具体实现中，本申请另一实施例中描述的终端包括但不限于诸如具有触摸敏感表面(例如，触摸屏显示器和/或触摸板) 的移动电话、膝上型计算机或平板计算机之类的其它便携式设备。还应当理解的是，在某些实施例中，所述设备并非便携式通信设备，而是具有触摸敏感表面(例如，触摸屏显示器和/或触摸板) 的台式计算机。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的终端和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的终端和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接，也可以是电的，机械的或其它的形式连接。
本申请实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本申请实施例终端中的单元可以根据实际需要进行合并、划分和删减。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本申请实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分，或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备 ( 可以是个人计算机，服务器，或者网络设备等 ) 执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U 盘、移动硬盘、只读存储器 (ROM，Read-Only Memory)、随机存取存储器 (RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (20)

  1. 一种传输信号的展频解码方法，包括，
    获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率；
    根据所述固定输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期；
    判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比；
    若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率；
    将所述新的解码频率作为更新后的解码频率。
  2. 如权利要求1所述的方法，还包括，
    计算所述展频调解周期与所述预设时间范围的比值以得到调整阶数M，所述调整阶数M为大于或等于2的整数，每一调整阶均对应有一阶预设调整频率值。
  3. 如权利要求2所述的方法，其中，所述将所述解码频率加或减一阶预设频率值以得到新的解码频率包括，
    获取展频后的输入信号的幅度值；
    计算所述幅度值与所述调整阶数M的比值以得到每一阶的平均调整频率值；
    将所述解码频率加或减一阶平均调整频率值以得到新的解码频率。
  4. 如权利要求3所述的方法，其中，所述获取展频后的输入信号的幅度值包括：
    获取展频后的输入信号的最大输入信号频率；
    获取展频后的输入信号的最小输入信号频率；
    将所述最大输入信号频率与所述最小输入信号频率的差值作为幅度值。
  5. 如权利要求1所述的方法，其中，所述预设百分比大于百分之五十。
  6. 如权利要求2所述的方法，其中，所述预设百分比大于百分之五十。
  7. 如权利要求3所述的方法，其中，所述预设百分比大于百分之五十。
  8. 一种显示装置，包括，
    显示面板；
    存储单元，用于存储程序指令；以及
    处理单元，与所述显示面板和所述存储单元连接，用于调用并执行所述程序指令，以执行如下步骤：
    获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率；
    根据所述固定输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期；
    判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比；
    若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率；
    将所述新的解码频率作为更新后的解码频率。
  9. 如权利要求8所述的显示装置，其中，处理单元调用并执行所述程序指令，还执行如下步骤：
    计算所述展频调解周期与所述预设时间范围的比值以得到调整阶数M，所述调整阶数M为大于或等于2的整数，每一调整阶均对应有一阶预设调整频率值。
  10. 如权利要求9所述的显示装置，其中，所述处理单元执行所述将所述解码频率加或减一阶预设频率值以得到新的解码频率的步骤时具体执行如下步骤：
    获取展频后的输入信号的幅度值；
    计算所述幅度值与所述调整阶数M的比值以得到每一阶的平均调整频率值；
    将所述解码频率加或减一阶平均调整频率值以得到新的解码频率。
  11. 如权利要求10所述的显示装置，其中，所述处理单元执行所述获取展频后的输入信号的幅度值的步骤时具体执行如下步骤：
    获取展频后的输入信号的最大输入信号频率；
    获取展频后的输入信号的最小输入信号频率；
    将所述最大输入信号频率与所述最小输入信号频率的差值作为幅度值。
  12. 如权利要求8所述的显示装置，其中，所述预设百分比大于百分之五十。
  13. 如权利要求9所述的显示装置，其中，所述预设百分比大于百分之五十。
  14. 如权利要求10所述的显示装置，其中，所述预设百分比大于百分之五十。
  15. 一种显示装置，包括，
    显示面板；以及
    第一获取单元，用于获取将进行展频处理的输入信号的固定输入频率，并将所述固定输入频率作为解码频率；
    第一计算单元，用于根据所述固定输入频率计算得到所述输入信号在预设时间范围内的周期数N，所述周期数N为大于或等于1的整数，其中每个周期均对应一个相应的展频后的输入频率，所述预设时间范围小于展频调解周期的一半，所述展频调解周期为对所述输入信号进行展频处理的周期；
    判断单元，用于判断在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值是否大于或等于预设百分比；
    调整单元，用于若在所述预设时间范围内，大于或小于所述解码频率的展频后的输入频率所对应的周期的数量与所述周期数N的比值大于或等于预设百分比，将所述解码频率加或减一阶预设调整频率值以得到新的解码频率；
    更新单元，用于将所述新的解码频率作为更新后的解码频率。
  16. 如权利要求15所述的显示装置，还包括，
    第二计算单元，用于计算所述展频调解周期与所述预设时间范围的比值以得到调整阶数M，所述调整阶数M为大于或等于2的整数，每一调整阶均对应有一阶预设调整频率值。
  17. 如权利要求16所述的显示装置，其中，所述调整单元包括，
    第二获取单元，用于获取展频后的输入信号的幅度值；
    第三计算单元，用于计算所述幅度值与所述调整阶数M的比值以得到每一阶的平均调整频率值；
    加减单元，用于将所述解码频率加或减一阶平均调整频率值以得到新的解码频率。
  18. 如权利要求17所述的显示装置，其中，所述第二获取单元包括，
    第一处理单元，用于获取展频后的输入信号的最大输入信号频率；
    第二处理单元，用于获取展频后的输入信号的最小输入信号频率；
    确定单元，用于将所述最大输入信号频率与所述最小输入信号频率的差值作为幅度值。
  19. 如权利要求15所述的显示装置，其中，所述预设百分比大于百分之五十。
  20. 如权利要求16所述的显示装置，其中，所述预设百分比大于百分之五十。
PCT/CN2017/091886 2016-12-22 2017-07-05 一种传输信号的展频解码方法及显示装置 Ceased WO2018113254A1 (zh)

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