WO2022241649A1 - 图像传输方法和装置 - Google Patents

图像传输方法和装置 Download PDF

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Publication number
WO2022241649A1
WO2022241649A1 PCT/CN2021/094411 CN2021094411W WO2022241649A1 WO 2022241649 A1 WO2022241649 A1 WO 2022241649A1 CN 2021094411 W CN2021094411 W CN 2021094411W WO 2022241649 A1 WO2022241649 A1 WO 2022241649A1
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WIPO (PCT)
Prior art keywords
inter
sending
frame
image data
sequence
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PCT/CN2021/094411
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English (en)
French (fr)
Inventor
杨沛
张广宇
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202180089548.6A priority Critical patent/CN116745839A/zh
Priority to PCT/CN2021/094411 priority patent/WO2022241649A1/zh
Publication of WO2022241649A1 publication Critical patent/WO2022241649A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals

Definitions

  • the present application relates to video image processing technology, and in particular to an image transmission method and device.
  • the present application provides an image transmission method and device to realize fine-grained low power consumption technology, greatly reduce power consumption related to display of terminal equipment, and improve switching efficiency between low power consumption states and working states between lines.
  • the present application provides an image transmission method, including: the sending end sends the effective image data of the current line in the image frame to the receiving end; after the sending end sends the effective image data of the current line, it switches from the working state to Inter-line low power consumption state; after receiving the inter-line dormancy sequence sent by the transmitting end, the receiving end switches from the working state to the inter-line low power consumption state; when the transmitting end determines that the first predetermined condition is satisfied, the inter-line The low power consumption state is switched to the working state; when the receiving end determines that the fifth predetermined condition is met, it switches from the inter-row low power consumption state to the working state; the sending end sends the current row to the receiving end in the working state Valid image data for the next row of .
  • This application can put the sending end and the receiving end into the inter-line low power consumption state between two lines of effective image data in the transmission image frame, so as to realize the fine-grained (inter-line) low power consumption technology, which greatly reduces the terminal equipment
  • the power consumption related to the display in addition, before transmitting the effective image data of the next line, wake up the sending end and the receiving end based on predetermined conditions, enter the working state, and improve the switching efficiency between the low power consumption state and the working state between lines.
  • switching from the working state to the inter-row low power consumption state includes: after sending the valid image data of the current row, after determining When the second predetermined condition is met, switch from the working state to the inter-row low power consumption state.
  • the sending end can first determine whether it is necessary to switch from the working state to the inter-line low power consumption state after sending the valid image data of the current line. Power consumption state, if it is necessary to switch, send the inter-line sleep sequence to the receiving end, and then switch from the working state to the inter-line low power consumption state.
  • the determining that the second predetermined condition is met includes: determining that the first time difference is greater than or equal to a first preset threshold, and the first time difference is used to indicate the start of sending the next row of valid image data The difference between the time and the time when the current row's valid data is sent.
  • the method further includes: sending an inter-line sleep sequence to the receiving end, where the inter-line sleep sequence is used to indicate that the receiving end is from the working state Enter the interline low-power state.
  • the sending end may enter the inter-row low power consumption state to reduce power consumption.
  • the sending end Before the sending end switches from the working state to the inter-line low power consumption state, it can first send the inter-line sleep sequence to the receiving end, and the inter-line sleep sequence is used to instruct the receiving end to enter the inter-line low power consumption state from the working state.
  • the determining that the first predetermined condition is met includes: determining that the count value of the first counter reaches the first predetermined moment, wherein, when the inter-line sleep sequence is sent to the receiving end, the first counter Counting is started, and the first predetermined moment is earlier than the start sending moment of the next line of valid image data.
  • the first predetermined time may be set earlier than the start sending time of the effective image data of the next row.
  • the duration before the first predetermined moment is earlier than the start sending moment of the effective image data of the next row may be the sum of the switching duration of the sending end plus the sending duration of the first physical layer locking sequence, so that the sending end starts at the first predetermined moment from The inter-line low power consumption state is switched to the working state, and after sending the first physical layer locking sequence, it just arrives at the start sending time of the valid image data of the next line.
  • the duration of the first predetermined time being earlier than the start sending time of the next line of valid image data may also be greater than the sum of the above two durations, which is not specifically limited in this application.
  • the sleep sequence between rows is K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5.
  • the method further includes: sending a first physical layer locking sequence to the receiving end, and the first physical layer locking sequence uses The data after the first physical layer sequence indicated to the receiving end is valid image data of the next row.
  • the method further includes: after sending the valid image data of the image frame, switching from the working state to the inter-frame low power consumption state; when it is determined that the third predetermined condition is met, switching from the The inter-frame low power consumption state is switched to this working state; in this working state, valid image data of the next image frame of the image frame is sent to the receiving end.
  • the sending end may enter an inter-frame low power consumption state to reduce power consumption.
  • the sending end Before the sending end switches from the working state to the inter-frame low power consumption state, it can first send an inter-frame sleep sequence to the receiving end.
  • the inter-frame sleep sequence is used to instruct the receiving end to enter the inter-frame low power consumption state from the working state.
  • switching from the working state to the inter-frame low power consumption state includes: after sending the valid image data of the image frame, When it is determined that the fourth predetermined condition is met, switch from the working state to the inter-frame low power consumption state.
  • the sending end can first determine whether it is necessary to switch from the working state to the inter-frame low power consumption state after sending the effective image data of the image frame. In the power consumption state, if it is necessary to switch, send an inter-frame sleep sequence to the receiving end, and then switch from the working state to the inter-frame low power consumption state.
  • the determining that the fourth predetermined condition is met includes: determining that the second time difference is greater than or equal to a second preset threshold, and the second time difference is used to indicate the start of valid image data of the next image frame The difference between the start time of transmission and the time of completion of transmission of valid image data of the image frame.
  • the method further includes: sending an inter-frame sleep sequence to the receiving end, where the inter-frame sleep sequence is used to indicate that the receiving end is from the working state Enter the inter-frame low-power state.
  • the determining that the third predetermined condition is met includes: determining that the count value of the second counter reaches the second predetermined moment, wherein, when the inter-frame sleep sequence is sent to the receiving end, the second counter Counting is started, and the second predetermined moment is earlier than the start sending moment of the valid image data of the next image frame.
  • the inter-frame sleep sequence is K28.5, K28.5, K27.7, K27.7, K27.7, K27.7, K27.7, K27.7.7.
  • the method further includes: sending a wake-up sequence to the receiving end, where the wake-up sequence is used to instruct the receiving end to switch from the inter-frame low power consumption state to the working state.
  • the low-power state enters the working state.
  • the AUX-CH between the sending end and the receiving end is enabled, so in order to wake up the receiving end, the sending end can send a wake-up sequence (wake-up) to the receiving end through AUX-CH.
  • the receiving end enters the working state from the inter-frame low power state after detecting the wake-up sequence on the AUX-CH.
  • the method further includes: sending a second physical layer locking sequence to the receiving end, where the second physical layer locking sequence is used to instruct the receiving end that the The data after the second physical layer sequence is valid image data of the next image frame.
  • the determining that the fifth predetermined condition is satisfied includes: determining that the count value of the third counter reaches the third predetermined moment, wherein, when receiving the inter-line sleep sequence sent by the sending end, the first The three counters start counting, and the third predetermined moment is earlier than the start receiving moment of the valid image data of the next row.
  • the method further includes: after receiving the inter-frame sleep sequence sent by the sending end, switching from the working state to the inter-frame low power consumption state; receiving the wake-up sequence sent by the sending end After the sequence, switch from the inter-frame low power consumption state to the working state; receive the effective image data of the next image frame sent by the sending end in the working state.
  • the present application provides an image transmission method, including: the sending end sends the effective image data of the image frame to the receiving end; after sending the effective image data of the image frame, switching from the working state to the low power between frames power consumption state; the receiving end switches from the working state to the inter-frame low power consumption state after receiving the inter-frame sleep sequence sent by the sending end; when the sending end determines that the third predetermined condition is satisfied, the inter-frame low power consumption The power consumption state switches to the working state; the receiving end switches from the inter-frame low power consumption state to the working state after receiving the wake-up sequence sent by the sending end; The receiving end sends valid image data of a next image frame of the image frame.
  • This application can put the sending end and the receiving end into the inter-frame low power consumption state between the transmission of two image frames, so as to realize the fine-grained (inter-frame) low power consumption technology, which greatly reduces the power consumption of the terminal equipment and the display. consumption.
  • switching from the working state to the inter-frame low power consumption state includes: after sending the effective image of the image frame After data, when it is determined that the fourth predetermined condition is satisfied, switch from the working state to the inter-frame low power consumption state.
  • the determining that the fourth predetermined condition is met includes: determining that a second time difference is greater than or equal to a second preset threshold, and the second time difference is used to indicate a valid image of the next image frame The difference between the start sending time of the data and the completion sending time of the effective image data of the image frame.
  • the method further includes: sending an inter-frame sleep sequence to the receiving end, the inter-frame sleep sequence is used to indicate the The receiving end enters the inter-frame low power consumption state from the working state.
  • the determining that the third predetermined condition is met includes: determining that the count value of the second counter reaches the second predetermined time, wherein the The second counter starts counting, and the second predetermined moment is earlier than the start sending moment of the effective image data of the next image frame.
  • the inter-frame sleep sequence is K28.5, K28.5, K27.7, K27.7, K27.7, K27.7, K27.7, K27.7.7.
  • the method further includes: sending a wake-up sequence to the receiving end, the wake-up sequence is used to indicate The receiving end enters the working state from the inter-frame low power consumption state.
  • the method further includes: sending a second physical layer locking sequence to the receiving end, and the second physical layer locking sequence is used for Indicating the receiving end that the data following the second physical layer sequence is valid image data of the next image frame.
  • the present application provides a device at the sending end, including: a sending module, configured to send valid image data of the current row in the image frame to the receiving end; a processing module, configured to send the valid image data of the current row after sending After that, switch from the working state to the inter-row low power consumption state; when it is determined that the first predetermined condition is met, switch from the inter-row low power consumption state to the working state; the sending module is also used to In the working state, the effective image data of the next line of the current line is sent to the receiving end.
  • the processing module is specifically configured to, after sending the valid image data of the current line, switch from the working state to the inter-line low power state.
  • the processing module is specifically configured to determine that the first time difference is greater than or equal to a first preset threshold, and the first time difference is used to indicate the start of sending the valid image data of the next row The difference between the time and the time when the valid data of the current row is sent.
  • the sending module is further configured to send an inter-line sleep sequence to the receiving end, and the inter-line sleep sequence is used to instruct the receiving end to enter the inter-line low power consumption from the working state state.
  • the processing module is specifically configured to determine that the count value of the first counter reaches a first predetermined moment, wherein when the inter-line sleep sequence is sent to the receiving end, the first The counter starts counting, and the first predetermined time is earlier than the start sending time of the valid image data of the next line.
  • the dormancy sequence between rows is K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5.
  • the sending module is further configured to send a first physical layer locking sequence to the receiving end, and the first physical layer locking sequence is used to instruct the receiving end that the first physical layer locking sequence The data after the layer sequence is valid image data of the next row.
  • the processing module is further configured to switch from the working state to the inter-frame low power consumption state after sending the valid image data of the image frame; after determining the third predetermined condition When it is satisfied, switch from the inter-frame low power consumption state to the working state; the sending module is also used to send the valid information of the next image frame of the image frame to the receiving end in the working state image data.
  • the processing module is specifically configured to, after sending the valid image data of the image frame, switch from the working state to the inter-frame low power state.
  • the processing module is specifically configured to determine that the second time difference is greater than or equal to a second preset threshold, and the second time difference is used to indicate the start of valid image data of the next image frame. The difference between the start sending time and the completion sending time of the effective image data of the image frame.
  • the sending module is further configured to send an inter-frame sleep sequence to the receiving end, and the inter-frame sleep sequence is used to instruct the receiving end to enter the inter-frame low power consumption from the working state state.
  • the processing module is specifically configured to determine that the count value of the second counter reaches a second predetermined moment, wherein when the inter-frame sleep sequence is sent to the receiving end, the second The counter starts counting, and the second predetermined moment is earlier than the start sending moment of the effective image data of the next image frame.
  • the inter-frame sleep sequence is K28.5, K28.5, K27.7, K27.7, K27.7, K27.7, K27.7, K27.7.7.
  • the sending module is further configured to send a wake-up sequence to the receiving end, where the wake-up sequence is used to instruct the receiving end to enter a working state from an inter-frame low power consumption state.
  • the sending module is further configured to send a second physical layer locking sequence to the receiving end, and the second physical layer locking sequence is used to instruct the receiving end that the second physical layer locking sequence The data after the layer sequence is valid image data of the next image frame.
  • the present application provides a device at the receiving end, including: a receiving module configured to receive valid image data of the current line in the image frame sent by the sending end; a processing module configured to receive the line data sent by the sending end After the inter-sleep sequence, switch from the working state to the inter-row low power consumption state; when it is determined that the fifth predetermined condition is met, switch from the inter-row low power consumption state to the working state; the receiving module is also used to In the working state, the effective image data of the next line of the current line sent by the sending end is received.
  • the processing module is specifically configured to determine that the count value of the third counter reaches the third predetermined moment, wherein when receiving the inter-line sleep sequence sent by the sending end, the The third counter starts counting, and the third predetermined time is earlier than the start receiving time of the valid image data of the next row.
  • the dormancy sequence between rows is K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5.
  • the processing module is further configured to switch from the working state to the inter-frame low power consumption state after receiving the inter-frame sleep sequence sent by the sending end; After the wake-up sequence sent by the sending end, switch from the inter-frame low power consumption state to the working state; the receiving module is also used to receive the next image frame sent by the sending end in the working state valid image data.
  • the inter-frame sleep sequence is K28.5, K28.5, K27.7, K27.7, K27.7, K27.7, K27.7, K27.7.7.
  • the present application provides a sender device, including: one or more processors; a memory for storing one or more programs; when the one or more programs are executed by the one or more processors Executing, so that the one or more processors implement the method performed by the sending end as described in any one of the first to second aspects above.
  • the present application provides a receiver device, including: one or more processors; a memory for storing one or more programs; when the one or more programs are executed by the one or more processors Execute, so that the one or more processors implement the method performed by the receiving end as described in any one of the first to second aspects above.
  • the present application provides a computer-readable storage medium, including a computer program.
  • the computer program When the computer program is executed on a computer, the computer executes the method described in any one of the first to second aspects above.
  • the present application provides a computer program for performing the method described in any one of the first to second aspects above when the computer program is executed by a computer.
  • FIG. 1 is an exemplary structural diagram of a terminal device of the present application
  • Fig. 2 is an exemplary structural diagram of the embedded DisplayPort of the present application
  • FIG. 3 is an exemplary flowchart of a process 300 of the image transmission method of the present application.
  • FIG. 4 is an exemplary schematic diagram of an image frame transmission process of the present application.
  • FIG. 5 is an exemplary schematic diagram of an image frame transmission sequence of the present application.
  • FIG. 6 is an exemplary flowchart of a process 600 of the image transmission method of the present application.
  • FIG. 7 is an exemplary schematic diagram of an image frame transmission process of the present application.
  • FIG. 8 is an exemplary schematic diagram of an image frame transmission sequence of the present application.
  • FIG. 9 is an exemplary structural diagram of a sending end device 900 of the present application.
  • FIG. 10 is an exemplary structural diagram of a receiver device 1000 of the present application.
  • At least one (item) means one or more, and “multiple” means two or more.
  • “And/or” is used to describe the association relationship of associated objects, indicating that there can be three types of relationships, for example, “A and/or B” can mean: only A exists, only B exists, and A and B exist at the same time , where A and B can be singular or plural.
  • the character “/” generally indicates that the contextual objects are an “or” relationship.
  • At least one of the following” or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • At least one item (piece) of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c ", where a, b, c can be single or multiple.
  • Fig. 1 is an exemplary structural diagram of the terminal equipment of the present application.
  • the terminal equipment includes an image source and a screen, and between the image source (also referred to as the sending end) and the screen (also referred to as the receiving end) Through the display port (displayport, DP) connection, the image frame sequence in the video obtained by the image source is transmitted through the display port, and finally displayed on the screen.
  • the image source also referred to as the sending end
  • the screen also referred to as the receiving end
  • the display port displayport, DP
  • the terminal device of the present application may be any device including a screen, for example, a mobile phone, a tablet computer, a notebook, an all-in-one home computer, and the like.
  • Fig. 2 is an exemplary structural diagram of the embedded display port of the present application, as shown in Fig. 2, the embedded display port (embedded displayport, eDP) between the sending end and the receiving end may include a main link (Main- Link), auxiliary channel (auxiliary channel, AUX-CH) and hot plug indication (hot plug detect, HDP) signal.
  • the Main-Link is a differential signal path for one-way transmission from the image source to the screen. It has the characteristics of large bandwidth and low delay, and is used to transmit data streams, such as uncompressed video and audio streams.
  • the transmission rate of Main-Link is generally 8.1Gbps/5.4Gbps and so on.
  • AUX-CH is a half-duplex two-way auxiliary channel between the image source and the screen for the transmission of commands and responses.
  • the image source is the master, which initiates the command request
  • the screen is the slave, which responds to the command.
  • AUX_CH is used for link and device management, and its transmission rate is generally 1Mbps.
  • the HPD signal is a hot plug indication signal, which is mainly used for the screen to initiate an interrupt request.
  • the sending end and the receiving end may include an active state (ACTIVE) and a low power consumption state (FW_SLEEP).
  • ACTIVE active state
  • FW_SLEEP low power consumption state
  • the HPD signal between the sending end and the receiving end is at a high level (asserted)
  • the AUX-CH is enabled (enabled)
  • the Main-Link reception is enabled (RX enabled).
  • the sending end and the receiving end Effective image data can be transmitted through the Main-Link; in the FW_SLEEP state, the HPD signal between the sending end and the receiving end is at a high level (asserted), AUX-CH is enabled (enabled), and the Main-Link reception is disabled (RX disabled), at this time the Main-Link between the sender and receiver cannot transmit data streams, so the power consumption of the sender and receiver can be reduced.
  • the sending end When both the sending end and the receiving end are in the ACTIVE state, the sending end sends valid image data to the receiving end through the Main-Link.
  • Link sends a sleep sequence (ML_PHY_SLEEP), and the receiver enters the FW_SLEEP state after detecting ML_PHY_SLEEP.
  • the sender also enters the FW_SLEEP state after sending out ML_PHY_SLEEP.
  • the AUX-CH Since the AUX-CH is enabled between the sending end and the receiving end in the low power consumption state, when the sending end needs to transmit valid image data, it first switches itself from the FW_SLEEP state to the ACTIVE state, and then sends a wake-up sequence through AUX-CH (AUX_PHY_WAKE), after the receiver detects AUX_PHY_WAKE, it enters the ACTIVE state from the FW_SLEEP state. After the sending end enters the ACTIVE state, the Main-Link reception is enabled, and the physical layer lock sequence (ML_PHY_LOCK) can be sent through the Main-Link. After the receiving end detects ML_PHY_LOCK, it starts to receive valid image data from the sending end in the next period of time. .
  • AUX_PHY_WAKE a wake-up sequence through AUX-CH
  • ML_PHY_LOCK physical layer lock sequence
  • the above-mentioned related technologies can enter a low power consumption state only after the complete video transmission is completed, which is not enough to reduce the power consumption of the terminal equipment.
  • the present application provides an image transmission method.
  • FIG. 3 is an exemplary flow chart of a process 300 of the image transmission method of the present application.
  • the process 300 can be executed by a sending end and a receiving end.
  • the process 300 is described as a series of steps or operations. It should be understood that the process 300 may be executed in various orders and/or concurrently, and is not limited to the execution order shown in FIG. 3 . Assuming that the image sequence in the video is sent from the sending end to the receiving end in the terminal device, and then displayed by the receiving end, the process 300 including the following steps is executed to transmit the image frame currently being processed.
  • this application sets the working state and the inter-line low power consumption state for the sending end and the receiving end.
  • the working state effective image data can be transmitted between the sending end and the receiving end through the Main-Link;
  • the inter-line low power consumption state the Main-Link between the sending end and the receiving end is disabled, and no data transmission is performed.
  • the following steps describe the switching process between the working state and the inter-line low power consumption state when transmitting image frames between the sending end and the receiving end of the terminal device.
  • Step 301 the sending end sends valid image data of the current row in the image frame to the receiving end.
  • Figure 4 is an exemplary schematic diagram of the image frame transmission process of the present application, as shown in Figure 4, the video is transmitted frame by frame according to the sequence of the image frames, and each image frame is line by line from top to bottom Transmission.
  • the duration of transmitting one image frame set by the sender is fixed.
  • the duration of transmitting one line of data is m
  • a total of n lines are transmitted in one frame of image frame, so the duration of transmitting one frame of image frame set by the sender is m ⁇ n
  • an image frame (such as Frame N) is graphically represented as a white area plus a black area.
  • the sender does not transmit valid image data for all the durations of an image frame, but transmits valid image data for part of the duration, and transmits invalid data for the rest of the duration.
  • the black area represents valid image data
  • the white area represents invalid data.
  • the sending end transmits the first 3 lines of data (line 0-line 2) in one image frame (such as Frame N) as invalid data, from line 3 to line 12, the first half The data is invalid data, and the second half of the data is valid image data.
  • the 3 lines of data starting from line 13 (line 13, line -15) are invalid data again.
  • the sending end and the receiving end can enter the inter-row low power consumption state, wherein the inter-row low power consumption state can be recorded as LP_HBK.
  • FIG. 4 may be used as an example for illustration.
  • the black area (effective image data) is located in the very center of an image frame position, or, the black area (valid image data) is located at the middle left position of an image frame, or, the black area (effective image data) is located at the upper left position of an image frame, and so on.
  • step 302 the sending end sends an inter-line sleep sequence to the receiving end after sending the valid image data of the current line.
  • Step 303 the sending end switches from the working state to the inter-line low power consumption state.
  • the sending end has sent the effective image data of the current row means that the sending end has sent the effective image data of the current line of transmission.
  • the sending end sends the effective image data of the fourth row in Figure 4 to the receiving end. is the current line
  • the black area of the 4th line is the effective image data of the current line
  • the sending end has sent the data of the black area of the 4th line, which means that the sending end has sent the effective image data of the current line.
  • the sending end after the sending end sends the effective image data of the current row, it can enter an inter-row low power consumption state to reduce power consumption. Before the sending end switches from the working state to the inter-line low power consumption state, it can first send the inter-line sleep sequence to the receiving end, and the inter-line sleep sequence is used to instruct the receiving end to enter the inter-line low power consumption state from the working state.
  • the sender can send an interline sleep sequence to the receiver through the Main-Link.
  • the sending end can first determine whether it is necessary to switch from the working state to the inter-line low power consumption state after sending the valid image data of the current line. Power consumption state, if it is necessary to switch, send the inter-line sleep sequence to the receiving end, and then switch from the working state to the inter-line low power consumption state.
  • the sending end when determining that the second predetermined condition is met, may determine that the above switching is necessary, and switch from the working state to the inter-row low power consumption state.
  • the satisfaction of the second predetermined condition may mean that the first time difference is greater than or equal to the first preset threshold, and the first time difference is used to indicate the start sending time of the valid image data of the next row and the completion sending time of the valid data of the current row the difference between.
  • the first time difference may refer to the transmission of the next row
  • the duration of invalid data for example, in FIG. 4 , the duration of transmitting the white area of the fourth row (that is, the invalid data of the fourth row) is the first time difference. If both the black area of the current row and the black area of the next row are located at the leftmost position of an image frame, the first time difference may refer to the duration of transmitting the invalid data of the current row.
  • the first time difference may refer to the duration of the remaining invalid data after transmitting the valid image data of the current line plus the invalid data before transmitting the valid image data of the next line The duration of the data.
  • the above first time difference can be obtained in two ways.
  • One method is that the sending end calculates and obtains the first time difference in real time. Before transmitting the image frame, the sending end can obtain in advance the start sending time of each row of valid image data in the image frame. For example, in Figure 4, the sending end can pre-acquire the start sending time of the effective image data of each line from the third line to the twelfth line, so after sending the third line of effective image data, the sending end can calculate the effective image data of the fourth line
  • the first time difference is the time difference between the start sending time of , and the completion time of the third line of effective image data transmission.
  • Another method is that the sending end reads the pre-calculated first time difference.
  • the duration of an image frame is fixed, the transmission duration of the effective image data of each row in the image frame can be the same, and the initial sending time between the effective image data of each row can be equidistant, That is, the invalid data duration between the previous line of valid image data and the next line of valid image data is fixed, so the sending end can pre-calculate the time difference between two lines of valid image data (that is, the first time difference) before transmitting the image frame, The first time difference is directly read after each row of valid image data is sent.
  • the first preset threshold can be set according to historical data, empirical common sense, and the like.
  • the first time difference is greater than or equal to the first preset threshold, which means that the time interval between sending the current line of data and sending the next line of data at the sending end is relatively large, and at this time, the sending end can enter the inter-line low power consumption state from the working state.
  • the dormancy sequence between rows may be K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5.
  • K28.5 represents an 8-bit fixed data.
  • the inter-row dormancy sequence may also include more or less K28.5 than the aforementioned example, for example, the inter-row dormancy sequence may be K28.5, K28.5, K28.5, K28.5, K28 .5, K28.5, this application does not specifically limit the content of the interline sleep sequence.
  • Step 304 After receiving the inter-row sleep sequence sent by the sender, the receiving end switches from the working state to the inter-row low power consumption state.
  • the Main-Link When the receiving end is working, the Main-Link is enabled, so the effective image data sent by the sending end is received through the Main-Link. At the same time, the receiving end monitors the received data to determine whether the received data is an inter-line sleep sequence. When the inter-line sleep sequence is detected, it means that the sending end is sure that it can enter the inter-line low power consumption state, so the receiving end The end can switch itself from the working state to the inter-row low-power state based on the inter-row sleep sequence.
  • the sending end and the receiving end of the terminal device can enter the state of low power consumption between lines, which can realize fine-grained (line Between) low power consumption technology, which greatly reduces the power consumption of terminal equipment related to display.
  • Step 305 when the sending end determines that the first predetermined condition is satisfied, switch from the inter-line low power consumption state to the working state.
  • Satisfaction of the first predetermined condition may mean that the count value of the first counter reaches the first predetermined time, wherein the first counter starts counting when the sending end sends the inter-line sleep sequence to the receiving end, and the first predetermined time is earlier than the next line
  • the start sending time of valid image data In order not to delay the sending of valid image data of the next line, the sending end needs to wake up in advance and enter the working state to prepare for the upcoming data sending. Therefore, when setting the first predetermined time, the first predetermined time may be set earlier than the start sending time of the effective image data of the next line.
  • the duration before the first predetermined moment is earlier than the start sending moment of the effective image data of the next row may be the sum of the switching duration of the sending end plus the sending duration of the first physical layer locking sequence, so that the sending end starts at the first predetermined moment from The inter-line low power consumption state is switched to the working state, and after sending the first physical layer locking sequence, it just arrives at the start sending time of the valid image data of the next line.
  • the duration of the first predetermined time being earlier than the start sending time of the next line of valid image data may also be greater than the sum of the above two durations, which is not specifically limited in this application.
  • Step 306 when the receiving end determines that the fifth predetermined condition is met, switch from the inter-line low power consumption state to the working state.
  • Satisfying the fifth predetermined condition may refer to determining that the count value of the third counter reaches the third predetermined time, wherein the third counter starts counting when receiving the inter-line sleep sequence sent by the sending end, and the third predetermined time is earlier than the next line The start receiving time of valid image data.
  • the receiving end needs to wake up in advance to enter the working state to prepare for the upcoming data reception. Therefore, when setting the third predetermined time, the third predetermined time may be set earlier than the start receiving time of the valid image data of the next row.
  • the duration before the third predetermined moment is earlier than the start receiving moment of the effective image data of the next row may be the sum of the switching duration of the receiving end plus the receiving duration of the first physical layer locking sequence, so that the receiving end starts to start at the third predetermined moment.
  • the inter-line low power consumption state is switched to the working state, and after receiving the first physical layer locking sequence, it is just time to start receiving the valid image data of the next line.
  • the time period before the third predetermined time point is earlier than the start receiving time point of the next line of valid image data may also be greater than the sum of the above two time lengths, which is not specifically limited in the present application.
  • the receiving end can determine the wake-up time based on the pre-set third counter, wake up at the corresponding time and enter the working state, and prepare for receiving the effective image data of the next line in advance.
  • the method of sending the wake-up sequence through the AUX-CH can improve the switching efficiency between the low power consumption state and the working state between rows.
  • Step 307 the sending end sends the first physical layer locking sequence to the receiving end.
  • Step 308. In the working state, the sending end sends the valid image data of the next line of the current line to the receiving end.
  • the sending end first sends the first physical layer locking sequence, and then sends the next row of valid image data (for example, the data in the black area of the fourth row in FIG. 4 ).
  • the first physical layer locking sequence may be used as early identification data of valid image data, and sent from the sending end to the receiving end.
  • the receiving end detects the first physical layer locking sequence, which means that the sending end will send the effective image data of the next line, so after receiving the last data of the first physical layer locking sequence, the receiving end can send the data received after that The data is treated as valid image data for the next row.
  • This application can put the sending end and the receiving end into the inter-line low power consumption state between two lines of effective image data in the transmission image frame, so as to realize the fine-grained (inter-line) low power consumption technology, which greatly reduces the terminal equipment
  • the power consumption related to the display in addition, before the effective image data of the next line is transmitted, the method based on counter counting wakes up the sending end and the receiving end, enters the working state, and improves the switching efficiency between the low power consumption state and the working state between lines.
  • Fig. 5 is an exemplary schematic diagram of the image frame transmission sequence of the present application. As shown in Fig. 5, the sending end and the receiving end are synchronized. When transmitting a row of valid image data in the image frame, the sending end and the receiving end are in working state After this line of effective image data is transmitted, the sending end and the receiving end enter the inter-line low power consumption state from the working state, so as to realize the fine-grained (inter-line) low power consumption technology.
  • Figure 5 First send the effective image data of the current line in the image frame (Frame N) (Figure 5 takes the third line as an example), send the inter-line sleep sequence (HIML_PHY_LP_HBK) after sending the effective image data of the current line, and enter the inter-line low power consumption state (LP-HBK).
  • the time difference (duration) between the start sending time of the effective image data of the next line (the fourth line in FIG. 5) and the time of sending the inter-line sleep sequence is recorded as hblank, and hblank ⁇ the first preset threshold.
  • T tx_phy_wake_up the duration of waking up the physical layer is recorded as T tx_phy_wake_up
  • the first physical layer lock sequence (HIML_PHY_LOCK) is sent when T tx_phy_wake_up ends, and the sending time of the first physical layer lock sequence is recorded as T tx_phy_lock .
  • T tx_phy_wake_up and T tx_phy_lock belong to hblank.
  • Figure 5 First receive the valid image data of the current line in the image frame (Frame N) ( Figure 5 takes the third line as an example), receive the inter-line sleep sequence (HIML_PHY_LP_HBK) after receiving the effective image data of the current line, and enter the inter-line low power consumption state (LP-HBK).
  • the time difference (duration) between the start receiving time of the effective image data of the next line (taking the 4th line in FIG. 5 as an example) and the time when the inter-line sleep sequence is received is also recorded as hblank.
  • the physical layer is awakened to enter the working state, and the duration of waking up the physical layer is recorded as T rx_phy_wake_up , and the first physical layer lock sequence (HIML_PHY_LOCK) is received at the end of T rx_phy_wake_up , and the receiving duration of the first physical layer lock sequence is recorded Make T rx_lock .
  • T rx_phy_wake_up and T rx_lock belong to hblank. Receive valid image data of the next row at the end of T rx_lock .
  • the receiving end may wake up completely during the process of receiving the first physical layer locking sequence, so at this time, the receiving end only needs to wait for the valid image data of the next line.
  • FIG. 6 is an exemplary flow chart of a process 600 of the image transmission method of the present application.
  • the process 600 can be executed by the sending end and the receiving end.
  • the process 600 is described as a series of steps or operations. It should be understood that the process 600 may be executed in various orders and/or concurrently, and is not limited to the execution order shown in FIG. 6 . Assuming that the image sequence in the video is sent from the sending end to the receiving end in the terminal device, and then displayed by the receiving end, the process 600 including the following steps is executed to transmit the image frame currently being processed.
  • this application sets the working state and the inter-frame low power consumption state for the sending end and the receiving end.
  • the working state effective image data can be transmitted between the sending end and the receiving end through the Main-Link;
  • the inter-frame low power consumption state the Main-Link between the sending end and the receiving end is disabled, and no data transmission is performed.
  • the following steps describe the switching process between the working state and the inter-frame low power consumption state when transmitting image frames between the sending end and the receiving end of the terminal device.
  • Step 601 the sending end sends valid image data of the image frame to the receiving end.
  • Figure 7 is an exemplary schematic diagram of the image frame transmission process of the present application, as shown in Figure 7, the video is transmitted frame by frame according to the sequence of image frames, and each image frame is line by line from top to bottom Transmission.
  • the duration of transmitting one image frame set by the sender is fixed.
  • the duration of transmitting one line of data is m
  • a total of n lines are transmitted in one frame of image frame, so the duration of transmitting one frame of image frame set by the sender is m ⁇ n
  • an image frame (such as Frame N) is graphically represented as a white area plus a black area.
  • the sender does not transmit valid image data for all the durations of an image frame, but transmits valid image data for part of the duration, and transmits invalid data for the rest of the duration.
  • the black area represents valid image data
  • the white area represents invalid data.
  • the sending end transmits the first 3 lines of data (line 0-line 2) in a frame of image frame (such as Frame N or Frame N+1) as invalid data, from line 3 to line 2 12 rows, the first half of the data is invalid data, the second half of the data is valid image data, and the 3 rows of data starting from the 13th row (the 13th-15th row) are invalid data.
  • the sending end and the receiving end can enter the inter-frame low power consumption state, wherein the inter-frame low power consumption state can be recorded as LP_VBK.
  • FIG. 7 may be used as an example for illustration.
  • the black area (effective image data) is located in the very center of an image frame position, or, the black area (valid image data) is located at the middle left position of an image frame, or, the black area (effective image data) is located at the upper left position of an image frame, and so on.
  • Step 602 After sending the effective image data of the image frame, the sending end sends an inter-frame sleep sequence to the receiving end.
  • Step 603 the sending end switches from the working state to the inter-frame low power consumption state.
  • the valid image data of the sending end sending the image frame means that the sending end has sent the last line of valid image data of the image frame currently being transmitted, for example, the sending end sends the valid image data of Frame N in Figure 7 to the receiving end, and the sending end After sending the data in the black area of the 12th line of Frame N is the effective image data of the image frame sent by the sending end.
  • the sending end may enter an inter-frame low power consumption state to reduce power consumption. Before the sending end switches from the working state to the inter-frame low power consumption state, it can first send an inter-frame sleep sequence to the receiving end.
  • the inter-frame sleep sequence is used to instruct the receiving end to enter the inter-frame low power consumption state from the working state.
  • the sending end can send an inter-frame sleep sequence to the receiving end through the Main-Link.
  • the sending end can first determine whether it is necessary to switch from the working state to the inter-frame low power consumption state after sending the effective image data of the image frame. In the power consumption state, if it is necessary to switch, send an inter-frame sleep sequence to the receiving end, and then switch from the working state to the inter-frame low power consumption state.
  • the sending end when determining that the fourth predetermined condition is satisfied, may determine that the above switching is necessary, and switch from the working state to the inter-line low power consumption state.
  • the fulfillment of the fourth predetermined condition may mean that the second time difference is greater than or equal to the second preset threshold value, and the second time difference is used to indicate the starting time of sending the effective image data of the next image frame and the start time of the effective image data of the image frame. The difference between the sending moments is done.
  • the above second time difference can be obtained in two ways.
  • One method is that the sending end calculates and obtains the second time difference in real time. Before transmitting the image frame, the sending end can obtain in advance the start sending time of the effective image data of line 0 of the image frame. For example, in Figure 7, the sending end can pre-acquire the start sending time of the effective image data of the 0th line of Frame N, so after sending the effective image data of the 12th line of Frame N, the sending end can calculate Frame N+ The time difference between the start sending time of the effective image data of line 0 of Frame 1 and the time of completion of transmission of the effective image data of line 12 of Frame N is the second time difference.
  • Another method is that the sending end reads the pre-calculated second time difference.
  • the duration of an image frame is fixed, the transmission duration of the effective image data in the image frame can be the same, and the start sending time between the effective image data of each image frame can be equidistant , that is, the duration of the invalid data between the effective image data of the 12th row of the image frame and the valid image data of the 0th row of the next image frame is fixed, so the sender can pre-calculate two frames of the image frame before transmitting the image frame
  • the time difference between the valid image data that is, the second time difference
  • the second time difference is directly read after each frame of valid image data is sent.
  • the second preset threshold can be set according to historical data, empirical common sense, and the like.
  • the second time difference is greater than or equal to the second preset threshold, which means that the time interval between sending the image frame and sending the next image frame at the sending end is relatively large, and at this time, the sending end can enter the inter-frame low power consumption state from the working state.
  • the sleep sequence between frames may be K28.5, K28.5, K27.7, K27.7, K27.7, K27.7, K27.7, K27.7.7.
  • K28.5 and K27.7 represent an 8-bit fixed data respectively.
  • the inter-frame dormancy sequence may also include more or less K28.5 or K27.7 than the aforementioned example, for example, the inter-frame dormancy sequence may be K28.5, K28.5, K28.5, K27 .7, K27.7, K27.7, K27.7, K27.7, this application does not specifically limit the content of the inter-frame sleep sequence.
  • step 604 the receiving end switches from the working state to the inter-frame low power consumption state after receiving the inter-frame sleep sequence sent by the sending end.
  • the Main-Link When the receiving end is working, the Main-Link is enabled, so the effective image data sent by the sending end is received through the Main-Link. At the same time, the receiving end monitors the received data to determine whether the received data is an inter-frame dormancy sequence. When the inter-frame dormancy sequence is detected, it means that the sending end is sure that it can enter the inter-frame low power consumption state, so the receiving end The end can switch itself from the working state to the inter-frame low-power state based on the inter-frame sleep sequence.
  • the sending end and the receiving end of the terminal device enter the low power consumption state between frames, which can realize fine-grained (frame Between) low power consumption technology, which greatly reduces the power consumption of terminal equipment related to display.
  • Step 605 when the sending end determines that the third predetermined condition is satisfied, switch from the inter-frame low power consumption state to the working state.
  • Satisfaction of the third predetermined condition may refer to determining that the count value of the second counter reaches the second predetermined moment, wherein the second counter starts counting when the inter-frame sleep sequence is sent to the receiving end, and the second predetermined moment is earlier than the next image frame The start sending time of valid image data.
  • the sending end can adopt a principle similar to the above-mentioned step 305 to enter the working state, which will not be repeated here.
  • Step 606 the sending end sends a wake-up sequence to the receiving end.
  • Step 607 the receiving end enters the working state based on the wake-up sequence.
  • the AUX-CH between the sending end and the receiving end is enabled, so in order to wake up the receiving end, the sending end can send a wake-up sequence (wake-up) to the receiving end through AUX-CH.
  • the receiving end enters the working state from the inter-frame low power state after detecting the wake-up sequence on the AUX-CH.
  • Step 608 the sending end sends the second physical layer locking sequence to the receiving end.
  • Step 609 In the working state, the sending end sends valid image data of the next image frame to the receiving end.
  • the sending end first sends the second physical layer locking sequence, and then sends the effective image data of the next image frame (for example, the data in the black area from the 3rd row to the 13th row of Frame N+1 in FIG. 7 ).
  • the second physical layer locking sequence may be used as early identification data of valid image data, and sent from the sending end to the receiving end.
  • the receiving end detects the second physical layer locking sequence, which means that the sending end will send the effective image data of the next image frame, so after receiving the last data of the second physical layer locking sequence, the receiving end can receive The received data is treated as valid image data of the next image frame for processing.
  • This application can put the sending end and the receiving end into the inter-frame low power consumption state between the transmission of two image frames, so as to realize the fine-grained (inter-frame) low power consumption technology, which greatly reduces the power consumption of the terminal equipment and the display. consumption.
  • Fig. 8 is an exemplary schematic diagram of the image frame transmission sequence of the present application. As shown in Fig. 8, the sending end and the receiving end are synchronized. When the effective image data of the image frame is transmitted, the sending end and the receiving end are in the working state. After the effective image data of the image frame is transmitted, the sending end and the receiving end enter the inter-frame low power consumption state from the working state, so as to realize the fine-grained (inter-frame) low power consumption technology.
  • First send the effective image data of the image frame (Frame N is taken as an example in Figure 8), and then send the inter-frame sleep sequence (HIML_PHY_LP_VBK) after sending the effective image data of the image frame, and enter the inter-frame low power consumption state (LP-VBK).
  • the time difference (duration) between the initial sending moment of the effective image data of the next image frame (Fig. 8 takes Frame N+1 as an example) and the moment of sending the dormancy sequence between frames is recorded as vblank, and vblank ⁇ the second preset threshold.
  • a wake-up sequence (wake-up) is sent through the AUX-CH in advance of the second predetermined time to wake up the receiving end.
  • Wake-up consists of Preamble, phy wake, and STOP.
  • the physical layer is awakened to enter the working state, the duration of waking up the physical layer is recorded as T tx_phy_wake_up , and the second physical layer lock sequence (HIML_PHY_LOCK) is sent at the end of T tx_phy_wake_up ), and the sending duration of the second physical layer lock sequence is denoted as T tx_phy_lock .
  • Both T tx_phy_wake_up and T tx_phy_lock belong to vblank.
  • Valid image data for the next image frame is sent at the end of Tx_phy_lock .
  • First receive the effective image data of the image frame (Frame N is taken as an example in Figure 8), receive the inter-frame sleep sequence (HIML_PHY_LP_VBK) after receiving the effective image data of Frame N, and enter the inter-frame low power consumption state (LP-VBK).
  • the time difference (duration) between the start receiving time of the valid image data of the next image frame (Frame N+1 is taken as an example in FIG. 8 ) and the time when the inter-frame sleep sequence is received is also recorded as vblank.
  • T rx_phy_wake_up the physical layer is woken up to enter the working state, and the duration of waking up the physical layer is recorded as T rx_phy_wake_up , and the second physical layer lock sequence (HIML_PHY_LOCK) is received at the end of T rx_phy_wake_up , and the receiving duration of the second physical layer lock sequence is denoted as T rx_lock .
  • Both T rx_phy_wake_up and T rx_lock belong to vblank. Receive valid image data of the next row at the end of T rx_lock .
  • the receiving end may wake up completely during the process of receiving the second physical layer locking sequence, so at this time, the receiving end only needs to wait to receive valid image data of the next image frame.
  • FIG. 9 is an exemplary structural diagram of a sending end device 900 of the present application.
  • the device of this embodiment can be set in the above-mentioned image source, and the sending end device 900 can include: a sending module 901 and a processing module 902, of which,
  • the sending module 901 is used to send the effective image data of the current line in the image frame to the receiving end; the processing module 902 is used to switch from the working state to the inter-line low power consumption state after sending the effective image data of the current line ; When it is determined that the first predetermined condition is satisfied, switch from the inter-line low power consumption state to the working state; the sending module 901 is further configured to send the current state to the receiving end in the working state Valid image data for the next row of rows.
  • the processing module 902 is specifically configured to switch from the working state to the row between low power states.
  • the processing module 902 is specifically configured to determine that the first time difference is greater than or equal to a first preset threshold, and the first time difference is used to indicate the start of the next row of valid image data The difference between the sending time and the sending time of the valid data of the current row.
  • the sending module 901 is further configured to send an inter-row sleep sequence to the receiving end, and the inter-row sleep sequence is used to instruct the receiving end to enter the inter-row low power consumption state.
  • the processing module 902 is specifically configured to determine that the count value of the first counter reaches the first predetermined moment, wherein the first A counter starts counting, and the first predetermined time is earlier than the start sending time of the effective image data of the next line.
  • the dormancy sequence between rows is K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5.
  • the sending module 901 is further configured to send a first physical layer locking sequence to the receiving end, and the first physical layer locking sequence is used to indicate to the receiving end that the first The data after the physical layer sequence is valid image data of the next row.
  • the processing module 902 is further configured to switch from the working state to the inter-frame low power consumption state after sending the valid image data of the image frame; When the condition is met, switch from the inter-frame low power consumption state to the working state; the sending module 901 is further configured to send the next image frame of the image frame to the receiving end in the working state valid image data.
  • the processing module 902 is specifically configured to, after sending the valid image data of the image frame, switch from the working state to the frame between low power states.
  • the processing module 902 is specifically configured to determine that the second time difference is greater than or equal to a second preset threshold, and the second time difference is used to indicate the effective image data of the next image frame The difference between the start sending time and the completion sending time of the effective image data of the image frame.
  • the sending module 901 is further configured to send an inter-frame sleep sequence to the receiving end, and the inter-frame sleep sequence is used to instruct the receiving end to enter the inter-frame low power consumption state.
  • the processing module 902 is specifically configured to determine that the count value of the second counter reaches the second predetermined moment, wherein when the inter-frame sleep sequence is sent to the receiving end, the first The second counter starts counting, and the second predetermined moment is earlier than the start sending moment of the effective image data of the next image frame.
  • the inter-frame sleep sequence is K28.5, K28.5, K27.7, K27.7, K27.7, K27.7, K27.7, K27.7.7.
  • the sending module 901 is further configured to send a wake-up sequence to the receiving end, where the wake-up sequence is used to instruct the receiving end to enter a working state from an inter-frame low power consumption state.
  • the sending module 901 is further configured to send a second physical layer locking sequence to the receiving end, and the second physical layer locking sequence is used to instruct the receiving end that the second The data after the physical layer sequence is valid image data of the next image frame.
  • the device in this embodiment can be used to execute the technical solution of the method embodiment shown in FIG. 3 or FIG. 6 , and its implementation principles and technical effects are similar, and details are not repeated here.
  • FIG. 10 is an exemplary structural diagram of a receiving device 1000 of the present application.
  • the device of this embodiment can be set in the above-mentioned screen, and the receiving device 1000 can include: a receiving module 1001 and a processing module 1002 ,in,
  • the receiving module 1001 is used to receive the effective image data of the current line in the image frame sent by the sending end; the processing module 1002 is used to switch from the working state to the inter-line low after receiving the inter-line sleep sequence sent by the sending end Power consumption state; when it is determined that the fifth predetermined condition is satisfied, switch from the inter-line low power consumption state to the working state; the receiving module 1001 is also configured to receive the transmission sent by the sending end in the working state Valid image data of the next row of the current row.
  • the processing module 1002 is specifically configured to determine that the count value of the third counter reaches the third predetermined moment, where the The third counter starts counting, and the third predetermined time is earlier than the start receiving time of the valid image data of the next row.
  • the dormancy sequence between rows is K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5, K28.5.
  • the processing module 1002 is further configured to switch from the working state to the inter-frame low power consumption state after receiving the inter-frame sleep sequence sent by the sending end; After the wake-up sequence sent by the sending end, switch from the inter-frame low power consumption state to the working state; the receiving module 1001 is also configured to receive the next message sent by the sending end in the working state Valid image data for the image frame.
  • the inter-frame sleep sequence is K28.5, K28.5, K27.7, K27.7, K27.7, K27.7, K27.7, K27.7.7.
  • the device in this embodiment can be used to execute the technical solution of the method embodiment shown in FIG. 3 or FIG. 6 , and its implementation principles and technical effects are similar, and details are not repeated here.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other possible Program logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the methods disclosed in the embodiments of the present application may be directly implemented by a hardware coded processor, or executed by a combination of hardware and software modules in the coded processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memories mentioned in the above embodiments may be volatile memories or nonvolatile memories, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which acts as external cache memory.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM direct memory bus random access memory
  • direct rambus RAM direct rambus RAM
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (personal computer, server, or network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

本申请提供一种图像传输方法和装置。本申请图像传输方法，包括：发送端向接收端发送图像帧中当前行的有效图像数据；发送端在发送完该当前行的有效图像数据之后，从工作状态切换到行间低功耗状态；接收端在接收到该发送端发送的行间休眠序列之后，从工作状态切换到行间低功耗状态；发送端在确定第一预定条件满足时，从该行间低功耗状态切换到该工作状态；接收端在确定第五预定条件满足时，从该行间低功耗状态切换到该工作状态；发送端在该工作状态下向该接收端发送该当前行的下一行的有效图像数据。本申请可以实现细粒度的低功耗技术，大大减少了终端设备与显示相关的功耗，并提高行间低功耗状态和工作状态之间的切换效率。

Description

图像传输方法和装置 技术领域
本申请涉及视频图像处理技术，尤其涉及一种图像传输方法和装置。
背景技术
随着智能手机、平板电脑、笔记本、家用一体机等智能终端设备的功能越来越全面，利用智能终端设备播放高清电影、玩大型3D游戏等成为人们日常生活中的常规娱乐方式。众所周知，播放高清电影、玩大型3D游戏等涉及到视频图像传输和屏幕显示的应用很容易增加智能终端设备的功耗，尤其是在带电池的智能终端设备上，功耗问题尤为突出。因此如何在智能终端设备上减少与上述应用相关的功耗成为一个函待解决的问题。
发明内容
本申请提供一种图像传输方法和装置，以实现细粒度的低功耗技术，大大减少了终端设备与显示相关的功耗，并提高行间低功耗状态和工作状态之间的切换效率。
第一方面，本申请提供一种图像传输方法，包括：发送端向接收端发送图像帧中当前行的有效图像数据；发送端在发送完该当前行的有效图像数据之后，从工作状态切换到行间低功耗状态；接收端在接收到该发送端发送的行间休眠序列之后，从工作状态切换到行间低功耗状态；发送端在确定第一预定条件满足时，从该行间低功耗状态切换到该工作状态；接收端在确定第五预定条件满足时，从该行间低功耗状态切换到该工作状态；发送端在该工作状态下向该接收端发送该当前行的下一行的有效图像数据。
本申请可以在传输图像帧中的两行有效图像数据之间，将发送端和接收端进入行间低功耗状态，以实现细粒度(行间)的低功耗技术，大大减少了终端设备与显示相关的功耗，另外在传输下一行的有效图像数据之前，基于预定条件唤醒发送端和接收端，进入工作状态，提高行间低功耗状态和工作状态之间的切换效率。
在一种可能的实现方式中，该在发送完该当前行的有效图像数据之后，从工作状态切换到行间低功耗状态，包括：在发送完该当前行的有效图像数据之后，在确定第二预定条件满足时，从该工作状态切换到该行间低功耗状态。
为了避免发送端和接收端频繁的在工作状态和行间低功耗状态之间切换，发送端可以在发送完当前行的有效图像数据之后，先确定是否有必要从工作状态切换到行间低功耗状态，如果有切换的必要，再向接收端发送行间休眠序列，然后从工作状态切换到行间低功耗状态。
在一种可能的实现方式中，该确定第二预定条件满足，包括：确定第一时间差大于或等于第一预设阈值，该第一时间差用于指示该下一行的有效图像数据的起始发送时刻和该当前行的有效数据的完成发送时刻之间的差值。
在一种可能的实现方式中，在发送完该当前行的有效图像数据之后，该方法还包括：向该接收端发送行间休眠序列，该行间休眠序列用于指示该接收端从工作状态进入行间低功耗状态。
本申请中，在发送端发送完当前行的有效图像数据之后，可以进入行间低功耗状态， 以降低功耗。而在发送端从工作状态切换到行间低功耗状态之前，可以先向接收端发送行间休眠序列，行间休眠序列用于指示接收端从工作状态进入行间低功耗状态。
在一种可能的实现方式中，该确定第一预定条件满足，包括：确定第一计数器的计数值到达第一预定时刻，其中，在向该接收端发送该行间休眠序列时该第一计数器启动计数，并且该第一预定时刻早于该下一行的有效图像数据的起始发送时刻。
为了不耽误下一行的有效图像数据的发送，发送端需要提前唤醒进入工作状态，为即将开始的数据发送做准备。因此在设置第一预定时刻时，可以将第一预定时刻设置的早于下一行的有效图像数据的起始发送时刻。例如，第一预定时刻比下一行的有效图像数据的起始发送时刻早的时长可以是发送端的切换时长加第一物理层锁定序列的发送时长之和，这样发送端在第一预定时刻开始从行间低功耗状态切换到工作状态，并且发送完第一物理层锁定序列，正好到达下一行的有效图像数据的起始发送时刻。需要说明的是，第一预定时刻比下一行的有效图像数据的起始发送时刻早的时长也可以大于上述两个时长之和，本申请对此不作具体限定。
在一种可能的实现方式中，该行间休眠序列为K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5。
在一种可能的实现方式中，该从该行间低功耗状态切换到该工作状态之后，该方法还包括：向该接收端发送第一物理层锁定序列，该第一物理层锁定序列用于指示该接收端该第一物理层序列之后的数据为该下一行的有效图像数据。
在一种可能的实现方式中，该方法还包括：在发送完该图像帧的有效图像数据之后，从该工作状态切换到帧间低功耗状态；在确定第三预定条件满足时，从该帧间低功耗状态切换到该工作状态；在该工作状态下向该接收端发送该图像帧的下一图像帧的有效图像数据。
本申请中，在发送端发送完图像帧的有效图像数据之后，可以进入帧间低功耗状态，以降低功耗。而在发送端从工作状态切换到帧间低功耗状态之前，可以先向接收端发送帧间休眠序列，帧间休眠序列用于指示接收端从工作状态进入帧间低功耗状态。
在一种可能的实现方式中，该在发送完该图像帧的有效图像数据之后，从该工作状态切换到帧间低功耗状态，包括：在发送完该图像帧的有效图像数据之后，在确定第四预定条件满足时，从该工作状态切换到该帧间低功耗状态。
为了避免发送端和接收端频繁的在工作状态和帧间低功耗状态之间切换，发送端可以在发送完图像帧的有效图像数据之后，先确定是否有必要从工作状态切换到帧间低功耗状态，如果有切换的必要，再向接收端发送帧间休眠序列，然后从工作状态切换到帧间低功耗状态。
在一种可能的实现方式中，该确定第四预定条件满足，包括：确定第二时间差大于或等于第二预设阈值，该第二时间差用于指示该下一图像帧的有效图像数据的起始发送时刻和该图像帧的有效图像数据的完成发送时刻之间的差值。
在一种可能的实现方式中，在发送完该图像帧的有效图像数据之后，该方法还包括：向该接收端发送帧间休眠序列，该帧间休眠序列用于指示该接收端从工作状态进入帧间低功耗状态。
在一种可能的实现方式中，该确定第三预定条件满足，包括：确定第二计数器的计数 值到达第二预定时刻，其中，在向该接收端发送该帧间休眠序列时该第二计数器启动计数，并且该第二预定时刻早于该下一图像帧的有效图像数据的起始发送时刻。
在一种可能的实现方式中，该帧间休眠序列为K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。
在一种可能的实现方式中，该从该帧间低功耗状态切换到该工作状态之后，该方法还包括：向该接收端发送唤醒序列，该唤醒序列用于指示该接收端从帧间低功耗状态进入工作状态。
在帧间低功耗状态下，发送端和接收端之间的AUX-CH使能，因此为了唤醒接收端，发送端可以通过AUX-CH向接收端发送唤醒序列(wake-up)。接收端在AUX-CH上检测到唤醒序列后从帧间低功耗状态进入工作状态。
在一种可能的实现方式中，该向该接收端发送唤醒序列之后，该方法还包括：向该接收端发送第二物理层锁定序列，该第二物理层锁定序列用于指示该接收端该第二物理层序列之后的数据为该下一图像帧的有效图像数据。
在一种可能的实现方式中，该确定第五预定条件满足，包括：确定第三计数器的计数值到达第三预定时刻，其中，在接收到该发送端发送的该行间休眠序列时该第三计数器启动计数，并且该第三预定时刻早于该下一行的有效图像数据的起始接收时刻。
在一种可能的实现方式中，该方法还包括：在接收到该发送端发送的帧间休眠序列之后，从该工作状态切换到帧间低功耗状态；在接收到该发送端发送的唤醒序列之后，从该帧间低功耗状态切换到该工作状态；在该工作状态下接收该发送端发送的下一图像帧的有效图像数据。
第二方面，本申请提供一种图像传输方法，包括：发送端向接收端发送图像帧的有效图像数据；在发送完所述图像帧的有效图像数据之后，从工作状态切换到帧间低功耗状态；接收端在接收到所述发送端发送的帧间休眠序列之后，从工作状态切换到帧间低功耗状态；发送端在确定第三预定条件满足时，从所述帧间低功耗状态切换到所述工作状态；接收端在接收到所述发送端发送的唤醒序列之后，从所述帧间低功耗状态切换到所述工作状态；发送端在所述工作状态下向所述接收端发送所述图像帧的下一图像帧的有效图像数据。
本申请可以在传输两帧图像帧之间，将发送端和接收端进入帧间低功耗状态，以实现细粒度(帧间)的低功耗技术，大大减少了终端设备与显示相关的功耗。
在一种可能的实现方式中，所述在发送完所述图像帧的有效图像数据之后，从所述工作状态切换到帧间低功耗状态，包括：在发送完所述图像帧的有效图像数据之后，在确定第四预定条件满足时，从所述工作状态切换到所述帧间低功耗状态。
在一种可能的实现方式中，所述确定第四预定条件满足，包括：确定第二时间差大于或等于第二预设阈值，所述第二时间差用于指示所述下一图像帧的有效图像数据的起始发送时刻和所述图像帧的有效图像数据的完成发送时刻之间的差值。
在一种可能的实现方式中，在发送完所述图像帧的有效图像数据之后，所述方法还包括：向所述接收端发送帧间休眠序列，所述帧间休眠序列用于指示所述接收端从工作状态进入帧间低功耗状态。
在一种可能的实现方式中，所述确定第三预定条件满足，包括：确定第二计数器的计 数值到达第二预定时刻，其中，在向所述接收端发送所述帧间休眠序列时所述第二计数器启动计数，并且所述第二预定时刻早于所述下一图像帧的有效图像数据的起始发送时刻。
在一种可能的实现方式中，所述帧间休眠序列为K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。
在一种可能的实现方式中，所述从所述帧间低功耗状态切换到所述工作状态之后，所述方法还包括：向所述接收端发送唤醒序列，所述唤醒序列用于指示所述接收端从帧间低功耗状态进入工作状态。
在一种可能的实现方式中，所述向所述接收端发送唤醒序列之后，所述方法还包括：向所述接收端发送第二物理层锁定序列，所述第二物理层锁定序列用于指示所述接收端所述第二物理层序列之后的数据为所述下一图像帧的有效图像数据。
第三方面，本申请提供一种发送端装置，包括：发送模块，用于向接收端发送图像帧中当前行的有效图像数据；处理模块，用于在发送完所述当前行的有效图像数据之后，从工作状态切换到行间低功耗状态；在确定第一预定条件满足时，从所述行间低功耗状态切换到所述工作状态；所述发送模块，还用于在所述工作状态下向所述接收端发送所述当前行的下一行的有效图像数据。
在一种可能的实现方式中，所述处理模块，具体用于在发送完所述当前行的有效图像数据之后，在确定第二预定条件满足时，从所述工作状态切换到所述行间低功耗状态。
在一种可能的实现方式中，所述处理模块，具体用于确定第一时间差大于或等于第一预设阈值，所述第一时间差用于指示所述下一行的有效图像数据的起始发送时刻和所述当前行的有效数据的完成发送时刻之间的差值。
在一种可能的实现方式中，所述发送模块，还用于向所述接收端发送行间休眠序列，所述行间休眠序列用于指示所述接收端从工作状态进入行间低功耗状态。
在一种可能的实现方式中，所述处理模块，具体用于确定第一计数器的计数值到达第一预定时刻，其中，在向所述接收端发送所述行间休眠序列时所述第一计数器启动计数，并且所述第一预定时刻早于所述下一行的有效图像数据的起始发送时刻。
在一种可能的实现方式中，所述行间休眠序列为K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5。
在一种可能的实现方式中，所述发送模块，还用于向所述接收端发送第一物理层锁定序列，所述第一物理层锁定序列用于指示所述接收端所述第一物理层序列之后的数据为所述下一行的有效图像数据。
在一种可能的实现方式中，所述处理模块，还用于在发送完所述图像帧的有效图像数据之后，从所述工作状态切换到帧间低功耗状态；在确定第三预定条件满足时，从所述帧间低功耗状态切换到所述工作状态；所述发送模块，还用于在所述工作状态下向所述接收端发送所述图像帧的下一图像帧的有效图像数据。
在一种可能的实现方式中，所述处理模块，具体用于在发送完所述图像帧的有效图像数据之后，在确定第四预定条件满足时，从所述工作状态切换到所述帧间低功耗状态。
在一种可能的实现方式中，所述处理模块，具体用于确定第二时间差大于或等于第二预设阈值，所述第二时间差用于指示所述下一图像帧的有效图像数据的起始发送时刻和所述图像帧的有效图像数据的完成发送时刻之间的差值。
在一种可能的实现方式中，所述发送模块，还用于向所述接收端发送帧间休眠序列，所述帧间休眠序列用于指示所述接收端从工作状态进入帧间低功耗状态。
在一种可能的实现方式中，所述处理模块，具体用于确定第二计数器的计数值到达第二预定时刻，其中，在向所述接收端发送所述帧间休眠序列时所述第二计数器启动计数，并且所述第二预定时刻早于所述下一图像帧的有效图像数据的起始发送时刻。
在一种可能的实现方式中，所述帧间休眠序列为K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。
在一种可能的实现方式中，所述发送模块，还用于向所述接收端发送唤醒序列，所述唤醒序列用于指示所述接收端从帧间低功耗状态进入工作状态。
在一种可能的实现方式中，所述发送模块，还用于向所述接收端发送第二物理层锁定序列，所述第二物理层锁定序列用于指示所述接收端所述第二物理层序列之后的数据为所述下一图像帧的有效图像数据。
第四方面，本申请提供一种接收端装置，包括：接收模块，用于接收发送端发送的图像帧中当前行的有效图像数据；处理模块，用于在接收到所述发送端发送的行间休眠序列之后，从工作状态切换到行间低功耗状态；在确定第五预定条件满足时，从所述行间低功耗状态切换到所述工作状态；所述接收模块，还用于在所述工作状态下接收所述发送端发送的所述当前行的下一行的有效图像数据。
在一种可能的实现方式中，所述处理模块，具体用于确定第三计数器的计数值到达第三预定时刻，其中，在接收到所述发送端发送的所述行间休眠序列时所述第三计数器启动计数，并且所述第三预定时刻早于所述下一行的有效图像数据的起始接收时刻。
在一种可能的实现方式中，所述行间休眠序列为K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5。
在一种可能的实现方式中，所述处理模块，还用于在接收到所述发送端发送的帧间休眠序列之后，从所述工作状态切换到帧间低功耗状态；在接收到所述发送端发送的唤醒序列之后，从所述帧间低功耗状态切换到所述工作状态；所述接收模块，还用于在所述工作状态下接收所述发送端发送的下一图像帧的有效图像数据。
在一种可能的实现方式中，所述帧间休眠序列为K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。
第五方面，本申请提供一种发送端设备，包括：一个或多个处理器；存储器，用于存储一个或多个程序；当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如上述第一至二方面中任一项所述的由发送端执行的方法。
第六方面，本申请提供一种接收端设备，包括：一个或多个处理器；存储器，用于存储一个或多个程序；当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如上述第一至二方面中任一项所述的由接收端执行的方法。
第七方面，本申请提供一种计算机可读存储介质，包括计算机程序，所述计算机程序在计算机上被执行时，使得所述计算机执行上述第一至二方面中任一项所述的方法。
第八方面，本申请提供一种计算机程序，当所述计算机程序被计算机执行时，用于执行上述第一至二方面中任一项所述的方法。
附图说明
图1为本申请终端设备的一个示例性的结构图；
图2为本申请嵌入式显示端口的一个示例性的结构图；
图3为本申请图像传输方法的过程300的一个示例性的流程图；
图4为本申请图像帧传输流程的一个示例性的示意图；
图5为本申请图像帧传输时序的一个示例性的示意图；
图6为本申请图像传输方法的过程600的一个示例性的流程图；
图7为本申请图像帧传输流程的一个示例性的示意图；
图8为本申请图像帧传输时序的一个示例性的示意图；
图9为本申请发送端装置900的一个示例性的结构图；
图10为本申请接收端装置1000的一个示例性的结构图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请中的附图，对本申请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作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。
本申请的说明书实施例和权利要求书及附图中的术语“第一”、“第二”等仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元。方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
应当理解，在本申请中，“至少一个(项)”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，用于描述关联对象的关联关系，表示可以存在三种关系，例如，“A和/或B”可以表示：只存在A，只存在B以及同时存在A和B三种情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，“a和b”，“a和c”，“b和c”，或“a和b和c”，其中a，b，c可以是单个，也可以是多个。
图1为本申请终端设备的一个示例性的结构图，如图1所示，该终端设备包括图像源和屏幕，图像源(亦称作发送端)和屏幕(亦称作接收端)之间通过显示端口(displayport，DP)连接，图像源得到的视频中的图像帧序列经过显示端口的传输，最终在屏幕上显示呈现。
本申请的终端设备可以采用包含屏幕的任意一种设备，例如，手机、平板电脑、笔记本、家用一体机等。
图2为本申请嵌入式显示端口的一个示例性的结构图，如图2所示，在发送端和接收端之间的嵌入式显示端口(embedded displayport，eDP)可以包含主链路(Main-Link)、辅助通道(auxiliary channel，AUX-CH)和热插拔指示(hot plug detect，HDP)信号。其中，Main-Link是从图像源到屏幕单向传输的差分信号通路，具有大带宽、低延时的特性， 用于传输数据流，例如，非压缩的视频、音频流等。Main-Link的传输速率一般为8.1Gbps/5.4Gbps等。AUX-CH是图像源和屏幕之间的半双工双向辅助通路，用于传输命令和响应。图像源为主，发起命令请求，屏幕为从，响应命令。AUX_CH用于链路、设备管理，其传输速率一般为1Mbps。HPD信号是热插拔指示信号，主要用于屏幕发起中断请求。
相关技术中，发送端和接收端可以包括工作状态(ACTIVE)和低功耗状态(FW_SLEEP)。在ACTIVE状态下，发送端和接收端之间的HPD信号处于高电平(asserted)，AUX-CH使能(enabled)，Main-Link接收使能(RX enabled)，此时发送端和接收端之间可以通过Main-Link传输有效图像数据；在FW_SLEEP状态下，发送端和接收端之间的HPD信号处于高电平(asserted)，AUX-CH使能(enabled)，Main-Link接收不使能(RX disabled)，此时发送端和接收端之间的Main-Link不能传输数据流，因此可以降低发送端和接收端的功耗。
当发送端和接收端均处于ACTIVE状态时，发送端通过Main-Link向接收端发送有效图像数据，正在传输的视频中的所有图像帧的有效图像数据全部发送完后，发送端可以通过Main-Link发送休眠序列(ML_PHY_SLEEP)，接收端检测到ML_PHY_SLEEP后，进入FW_SLEEP状态。发送端在发出ML_PHY_SLEEP后，也进入FW_SLEEP状态。
由于低功耗状态下，发送端和接收端之间AUX-CH使能，当发送端在需要传输有效图像数据时，先将自身从FW_SLEEP状态切换到ACTIVE状态，然后通过AUX-CH发送唤醒序列(AUX_PHY_WAKE)，接收端检测到AUX_PHY_WAKE后，从FW_SLEEP状态进入ACTIVE状态。发送端进入ACTIVE状态后，Main-Link接收使能，可以通过Main-Link发送物理层锁定序列(ML_PHY_LOCK)，接收端检测到ML_PHY_LOCK后，开始在接下来的一段时间内接收来自发送端的有效图像数据。
但是，上述相关技术只能在完整的视频传输完后才能进入低功耗状态，还不足以降低终端设备的功耗。
为了解决上述技术问题，基于图1和图2所示的显示端口，本申请提供了一种图像传输方法。
图3为本申请图像传输方法的过程300的一个示例性的流程图，如图3所示，过程300可由发送端和接收端执行。过程300描述为一系列的步骤或操作，应当理解的是，过程300可以以各种顺序执行和/或同时发生，不限于图3所示的执行顺序。假设视频中的图像序列在终端设备中从发送端被发送到接收端，再由接收端显示出来，执行包括如下步骤的过程300来传输当前正在处理的图像帧。
为了降低终端设备的功耗，本申请对发送端和接收端设置了工作状态和行间低功耗状态，在工作状态下，发送端和接收端之间可以通过Main-Link传输有效图像数据；在行间低功耗状态下，发送端和接收端之间的Main-Link不使能，不进行数据传输。以下步骤描述终端设备的发送端和接收端之间在传输图像帧时，工作状态和行间低功耗状态的切换过程。
步骤301、发送端向接收端发送图像帧中当前行的有效图像数据。
图4为本申请图像帧传输流程的一个示例性的示意图，如图4所示，视频是按照图像帧的先后顺序逐帧传输的，而每个图像帧内是按照行从上到下逐行传输的。发送端设定的 传输一帧图像帧的时长是固定的，例如传输一行数据的时长为m，一帧图像帧内共传输n行，因此发送端设定的传输一帧图像帧的时长为m×n，一帧图像帧(例如Frame N)用图示表示为白色区域加黑色区域。实际情况中，发送端在一帧图像帧内并不是所有的时长传输的都是有效图像数据，而是其中部分时长传输有效图像数据，其余时长传输无效数据。图4中黑色区域表示有效图像数据，白色区域表示无效数据。具体地，图4中发送端在一帧图像帧(例如Frame N)内，先传输的3行数据(第0行-第2行)是无效数据，从第3行到第12行，前半部分数据是无效数据，后半部分数据是有效图像数据。从第13行开始的3行数据(第13行第-15行)又是无效数据。在第3行到第12行中每行的无效数据时间段内，发送端和接收端可以进入行间低功耗状态，其中，行间低功耗状态可以记作LP_HBK。本实施例的下文中可以采用图4作为示例举例说明。
需要说明的是，图4示出的仅为一个示例，本申请对有效图像数据在一帧图像帧内的位置不作具体限定，例如，黑色区域(有效图像数据)位于一帧图像帧的正中央位置，或者，黑色区域(有效图像数据)位于一帧图像帧的中间靠左位置，或者，黑色区域(有效图像数据)位于一帧图像帧的左上方位置，等等。
步骤302、发送端在发送完当前行的有效图像数据之后，向接收端发送行间休眠序列。
步骤303、发送端从工作状态切换到行间低功耗状态。
发送端发送完当前行的有效图像数据是指发送端发送完当前正在传输的一行有效图像数据，例如，发送端向接收端发送图4中的第4行的有效图像数据，该第4行即为当前行，第4行的黑色区域即为当前行的有效图像数据，发送端发送完第4行的黑色区域的数据即为发送端发送完当前行的有效图像数据。
本申请中，在发送端发送完当前行的有效图像数据之后，可以进入行间低功耗状态，以降低功耗。而在发送端从工作状态切换到行间低功耗状态之前，可以先向接收端发送行间休眠序列，行间休眠序列用于指示接收端从工作状态进入行间低功耗状态。发送端可以通过Main-Link向接收端发送行间休眠序列。
为了避免发送端和接收端频繁的在工作状态和行间低功耗状态之间切换，发送端可以在发送完当前行的有效图像数据之后，先确定是否有必要从工作状态切换到行间低功耗状态，如果有切换的必要，再向接收端发送行间休眠序列，然后从工作状态切换到行间低功耗状态。
在一种可能的实现方式中，发送端可以在确定第二预定条件满足时，确定有上述切换的必要，从工作状态切换到行间低功耗状态。其中，第二预定条件满足可以是指第一时间差大于或等于第一预设阈值，该第一时间差用于指示下一行的有效图像数据的起始发送时刻和当前行的有效数据的完成发送时刻之间的差值。
具体地，如果当前行黑色区域和下一行黑色区域均位于一帧图像帧的最右侧位置(如图4所示第3行和第4行)，那么第一时间差可以是指传输下一行的无效数据的时长，例如，图4中传输第4行白色区域(即第4行无效数据)的时长为第一时间差。如果当前行黑色区域和下一行黑色区域均位于一帧图像帧的最左侧位置，那么第一时间差可以是指传输当前行的无效数据的时长。如果当前行黑色区域和下一行黑色区域均位于一帧图像帧的中间位置，那么第一时间差可以是指传输当前行有效图像数据之后的剩余无效数据的时长加传输下一行有效图像数据之前的无效数据的时长。
上述第一时间差可以有两种获取方式，一种方法是发送端实时计算获取第一时间差，在传输图像帧之前，发送端可以预先得到图像帧中的每一行有效图像数据的起始发送时刻，例如，图4中发送端可以预先获取第3行到第12行各行有效图像数据的起始发送时刻，因此在发送完第三行有效图像数据之后，发送端可以计算得到第4行有效图像数据的起始发送时刻与第3行有效图像数据的完成传输时刻之间的时间差，即为第一时间差。另一种方法是发送端读取预先计算得到的第一时间差。如上所述，一帧图像帧的时长是固定的，图像帧中各行的有效果图像数据的传输时长可以是相同的，各行的有效果图像数据之间的起始发送时刻可以是等差的，即上一行有效图像数据到下一行有效图像数据之间的无效数据时长是固定的，因此发送端可以在传输图像帧之前预先计算得到两行有效图像数据之间的时间差(即第一时间差)，在每发送完一行有效图像数据后直接读取该第一时间差。
第一预设阈值可以根据历史数据、经验常识等设置。第一时间差大于或等于第一预设阈值表示发送端发送完当前行数据到发送下一行数据之间的时间间隔比较大，此时发送端可以从工作状态进入行间低功耗状态。
可选的，行间休眠序列可以是K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5。其中，K28.5表示一个8bit的固定数据。需要说明的是，行间休眠序列也可以包括比前述举例更多或更少数量的K28.5，例如行间休眠序列可以是K28.5,K28.5,K28.5,K28.5,K28.5,K28.5，本申请对行间休眠序列的内容不做具体限定。
步骤304、接收端在接收到发送端发送的行间休眠序列之后，从工作状态切换到行间低功耗状态。
接收端在工作状态下，Main-Link使能，因此通过Main-Link接收发送端发送的有效图像数据。与此同时，接收端对收到的数据进行监测，确定收到的数据是否为行间休眠序列，在检测到行间休眠序列时，表示发送端确定可以进入行间低功耗状态，因此接收端可以基于行间休眠序列，将自身从工作状态切换到行间低功耗状态。本申请可以在确定行间的无效数据的时长较长(大于或等于第一预设阈值)时，将终端设备的发送端和接收端进入到行间低功耗状态，可以实现细粒度(行间)的低功耗技术，大大减少了终端设备与显示相关的功耗。
步骤305、发送端在确定第一预定条件满足时，从行间低功耗状态切换到工作状态。
第一预定条件满足可以是指第一计数器的计数值到达第一预定时刻，其中，发送端在向接收端发送行间休眠序列时第一计数器启动计数，并且第一预定时刻早于下一行的有效图像数据的起始发送时刻。为了不耽误下一行的有效图像数据的发送，发送端需要提前唤醒进入工作状态，为即将开始的数据发送做准备。因此在设置第一预定时刻时，可以将第一预定时刻设置的早于下一行的有效图像数据的起始发送时刻。例如，第一预定时刻比下一行的有效图像数据的起始发送时刻早的时长可以是发送端的切换时长加第一物理层锁定序列的发送时长之和，这样发送端在第一预定时刻开始从行间低功耗状态切换到工作状态，并且发送完第一物理层锁定序列，正好到达下一行的有效图像数据的起始发送时刻。需要说明的是，第一预定时刻比下一行的有效图像数据的起始发送时刻早的时长也可以大于上述两个时长之和，本申请对此不作具体限定。
步骤306、接收端在确定第五预定条件满足时，从行间低功耗状态切换到工作状态。
第五预定条件满足可以是指确定第三计数器的计数值到达第三预定时刻，其中，在接 收到发送端发送的行间休眠序列时第三计数器启动计数，并且第三预定时刻早于下一行的有效图像数据的起始接收时刻。同理，为了不耽误下一行的有效图像数据的接收，接收端需要提前唤醒进入工作状态，为即将开始的数据接收做准备。因此在设置第三预定时刻时，可以将第三预定时刻设置的早于下一行的有效图像数据的起始接收时刻。例如，第三预定时刻比下一行的有效图像数据的起始接收时刻早的时长可以是接收端的切换时长加第一物理层锁定序列的接收时长之和，这样接收端在第三预定时刻开始从行间低功耗状态切换到工作状态，并且接收完第一物理层锁定序列，正好到达下一行的有效图像数据的起始接收时刻。需要说明的是，第三预定时刻比下一行的有效图像数据的起始接收时刻早的时长也可以大于上述两个时长之和，本申请对此不作具体限定。
这样接收端可以基于预先设定好的第三计数器确定唤醒的时刻，并在对应的时刻唤醒并进入工作状态，提前为接收下一行的有效果图像数据做好准备，相较于相关技术中需要通过AUX-CH发送唤醒序列的方法，可以提高行间低功耗状态和工作状态之间的切换效率。
步骤307、发送端向接收端发送第一物理层锁定序列。
步骤308、在工作状态下，发送端向接收端发送当前行的下一行的有效图像数据。
发送端先发送第一物理层锁定序列，再发送下一行的有效图像数据(例如，图4中第4行黑色区域的数据)。
第一物理层锁定序列可以作为有效图像数据的前期标识数据，由发送端发送给接收端。接收端检测到第一物理层锁定序列，表示发送端接下来发送下一行的有效果图像数据，因此接收端收到第一物理层锁定序列的最后一个数据后，可以将在此之后收到的数据当做下一行的有效图像数据以进行处理。
本申请可以在传输图像帧中的两行有效图像数据之间，将发送端和接收端进入行间低功耗状态，以实现细粒度(行间)的低功耗技术，大大减少了终端设备与显示相关的功耗，另外在传输下一行的有效图像数据之前，基于计数器计数的方法唤醒发送端和接收端，进入工作状态，提高行间低功耗状态和工作状态之间的切换效率。
图5为本申请图像帧传输时序的一个示例性的示意图，如图5所示，发送端和接收端同步，当传输图像帧中的一行有效图像数据时，发送端和接收端处于工作状态，当这一行有效图像数据传输完之后，发送端和接收端从工作状态进入行间低功耗状态，以实现细粒度(行间)的低功耗技术。
发送端：
先发送图像帧(Frame N)中的当前行(图5以第3行为例)的有效图像数据，发送完当前行的有效图像数据后发送行间休眠序列(HIML_PHY_LP_HBK)，并进入行间低功耗状态(LP-HBK)。下一行(图5中以第4行为例)的有效图像数据的起始发送时刻与发送行间休眠序列的时刻之间的时间差(时长)记作hblank，并且hblank≥第一预设阈值。当到达第一预定时刻，唤醒物理层进入工作状态，唤醒物理层的时长记作T tx_phy_wake_up，T tx_phy_wake_up结束之时发送第一物理层锁定序列(HIML_PHY_LOCK)，第一物理层锁定序列发送时间记作T tx_phy_lock。T tx_phy_wake_up和T tx_phy_lock均属于hblank内。T tx_phy_lock结束之时发送下一行的有效图像数据。
接收端：
先接收图像帧(Frame N)中的当前行(图5以第3行为例)的有效图像数据，接收完当前行的有效图像数据后接收行间休眠序列(HIML_PHY_LP_HBK)，并进入行间低功耗状态(LP-HBK)。下一行(图5中以第4行为例)的有效图像数据的起始接收时刻与收到行间休眠序列的时刻之间的时间差(时长)也记作hblank。当到达第三预定时刻，唤醒物理层进入工作状态，唤醒物理层的时长记作T rx_phy_wake_up，T rx_phy_wake_up结束之时接收第一物理层锁定序列(HIML_PHY_LOCK)，第一物理层锁定序列的接收时长记作T rx_lock。T rx_phy_wake_up和T rx_lock均属于hblank内。T rx_lock结束之时接收下一行的有效图像数据。
接收端可能在接收第一物理层锁定序列过程中就完全唤醒，那么此时接收端只需等待下一行的有效图像数据即可。
图6为本申请图像传输方法的过程600的一个示例性的流程图，如图6所示，过程600可由发送端和接收端执行。过程600描述为一系列的步骤或操作，应当理解的是，过程600可以以各种顺序执行和/或同时发生，不限于图6所示的执行顺序。假设视频中的图像序列在终端设备中从发送端被发送到接收端，再由接收端显示出来，执行包括如下步骤的过程600来传输当前正在处理的图像帧。
为了降低终端设备的功耗，本申请对发送端和接收端设置了工作状态和帧间低功耗状态，在工作状态下，发送端和接收端之间可以通过Main-Link传输有效图像数据；在帧间低功耗状态下，发送端和接收端之间的Main-Link不使能，不进行数据传输。以下步骤描述终端设备的发送端和接收端之间在传输图像帧时，工作状态和帧间低功耗状态的切换过程。
步骤601、发送端向接收端发送图像帧的有效图像数据。
图7为本申请图像帧传输流程的一个示例性的示意图，如图7所示，视频是按照图像帧的先后顺序逐帧传输的，而每个图像帧内是按照行从上到下逐行传输的。发送端设定的传输一帧图像帧的时长是固定的，例如传输一行数据的时长为m，一帧图像帧内共传输n行，因此发送端设定的传输一帧图像帧的时长为m×n，一帧图像帧(例如Frame N)用图示表示为白色区域加黑色区域。实际情况中，发送端在一帧图像帧内并不是所有的时长传输的都是有效图像数据，而是其中部分时长传输有效图像数据，其余时长传输无效数据。图7中黑色区域表示有效图像数据，白色区域表示无效数据。具体地，图7中发送端在一帧图像帧(例如Frame N或Frame N+1)内，先传输的3行数据(第0行-第2行)是无效数据，从第3行到第12行，前半部分数据是无效数据，后半部分数据是有效图像数据，从第13行开始的3行数据(第13行-第15行)又是无效数据。在Frame N中的第13行到Frame N+1中的第3行的无效数据时间段内，发送端和接收端可以进入帧间低功耗状态，其中，帧间低功耗状态可以记作LP_VBK。本实施例的下文中可以采用图7作为示例举例说明。
需要说明的是，图7示出的仅为一个示例，本申请对有效图像数据在一帧图像帧内的位置不作具体限定，例如，黑色区域(有效图像数据)位于一帧图像帧的正中央位置，或者，黑色区域(有效图像数据)位于一帧图像帧的中间靠左位置，或者，黑色区域(有效图像数据)位于一帧图像帧的左上方位置，等等。
步骤602、发送端在发送完图像帧的有效图像数据之后，向接收端发送帧间休眠序列。
步骤603、发送端从工作状态切换到帧间低功耗状态。
发送端发送完图像帧的有效图像数据是指发送端发送完当前正在传输的图像帧的最后一行有效图像数据，例如，发送端向接收端发送图7中的Frame N的有效图像数据，发送端发送完Frame N的第12行的黑色区域的数据即为发送端发送完图像帧的有效图像数据。
本申请中，在发送端发送完图像帧的有效图像数据之后，可以进入帧间低功耗状态，以降低功耗。而在发送端从工作状态切换到帧间低功耗状态之前，可以先向接收端发送帧间休眠序列，帧间休眠序列用于指示接收端从工作状态进入帧间低功耗状态。发送端可以通过Main-Link向接收端发送帧间休眠序列。
为了避免发送端和接收端频繁的在工作状态和帧间低功耗状态之间切换，发送端可以在发送完图像帧的有效图像数据之后，先确定是否有必要从工作状态切换到帧间低功耗状态，如果有切换的必要，再向接收端发送帧间休眠序列，然后从工作状态切换到帧间低功耗状态。
在一种可能的实现方式中，发送端可以在确定第四预定条件满足时，确定有上述切换的必要，从工作状态切换到行间低功耗状态。其中，第四预定条件满足可以是指第二时间差大于或等于第二预设阈值，该第二时间差用于指示下一图像帧的有效图像数据的起始发送时刻和图像帧的有效图像数据的完成发送时刻之间的差值。
上述第二时间差可以有两种获取方式，一种方法是发送端实时计算获取第二时间差，在传输图像帧之前，发送端可以预先得到图像帧的第0行有效图像数据的起始发送时刻，例如，图7中发送端可以预先获取Frame N的第0行的有效图像数据的起始发送时刻，因此在发送完Frame N的第12行的有效图像数据之后，发送端可以计算得到Frame N+1的第0行的有效图像数据的起始发送时刻与Frame N的第12行的有效图像数据的完成传输时刻之间的时间差，即为第二时间差。另一种方法是发送端读取预先计算得到的第二时间差。如上所述，一帧图像帧的时长是固定的，图像帧中的有效果图像数据的传输时长可以是相同的，各图像帧的有效果图像数据之间的起始发送时刻可以是等差的，即图像帧的第12行的有效图像数据到下一图像帧的第0行有效图像数据之间的无效数据时长是固定的，因此发送端可以在传输图像帧之前预先计算得到两帧图像帧的有效图像数据之间的时间差(即第二时间差)，在每发送一帧图像帧的有效图像数据后直接读取该第二时间差。
第二预设阈值可以根据历史数据、经验常识等设置。第二时间差大于或等于第二预设阈值表示发送端发送完图像帧到发送下一图像帧之间的时间间隔比较大，此时发送端可以从工作状态进入帧间低功耗状态。
可选的，帧间休眠序列可以是K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。其中，K28.5和K27.7分别表示一个8bit的固定数据。需要说明的是，帧间休眠序列也可以包括比前述举例更多或更少数量的K28.5或K27.7，例如帧间休眠序列可以是K28.5,K28.5,K28.5,K27.7,K27.7,K27.7,K27.7，本申请对帧间休眠序列的内容不做具体限定。
步骤604、接收端在接收到发送端发送的帧间休眠序列之后，从工作状态切换到帧间低功耗状态。
接收端在工作状态下，Main-Link使能，因此通过Main-Link接收发送端发送的有效 图像数据。与此同时，接收端对收到的数据进行监测，确定收到的数据是否为帧间休眠序列，在检测到帧间休眠序列时，表示发送端确定可以进入帧间低功耗状态，因此接收端可以基于帧间休眠序列，将自身从工作状态切换到帧间低功耗状态。本申请可以在确定帧间的无效数据的时长较长(大于或等于第二预设阈值)时，将终端设备的发送端和接收端进入到帧间低功耗状态，可以实现细粒度(帧间)的低功耗技术，大大减少了终端设备与显示相关的功耗。
步骤605、发送端在确定第三预定条件满足时，从帧间低功耗状态切换到工作状态。
第三预定条件满足可以是指确定第二计数器的计数值到达第二预定时刻，其中，在向接收端发送帧间休眠序列时第二计数器启动计数，并且第二预定时刻早于下一图像帧的有效图像数据的起始发送时刻。
帧间低功耗状态下，发送端可以采用与上述步骤305类似的原理进入工作状态，此处不再赘述。
步骤606、发送端向接收端发送唤醒序列。
步骤607、接收端基于唤醒序列进入工作状态。
在帧间低功耗状态下，发送端和接收端之间的AUX-CH使能，因此为了唤醒接收端，发送端可以通过AUX-CH向接收端发送唤醒序列(wake-up)。接收端在AUX-CH上检测到唤醒序列后从帧间低功耗状态进入工作状态。
步骤608、发送端向接收端发送第二物理层锁定序列。
步骤609、在工作状态下，发送端向接收端发送下一图像帧的有效图像数据。
发送端先发送第二物理层锁定序列，再发送下一图像帧的有效图像数据(例如，图7中Frame N+1的第3行到第13行的黑色区域的数据)。
第二物理层锁定序列可以作为有效图像数据的前期标识数据，由发送端发送给接收端。接收端检测到第二物理层锁定序列，表示发送端接下来发送下一图像帧的有效果图像数据，因此接收端收到第二物理层锁定序列的最后一个数据后，可以将在此之后收到的数据当做下一图像帧的有效图像数据以进行处理。
本申请可以在传输两帧图像帧之间，将发送端和接收端进入帧间低功耗状态，以实现细粒度(帧间)的低功耗技术，大大减少了终端设备与显示相关的功耗。
图8为本申请图像帧传输时序的一个示例性的示意图，如图8所示，发送端和接收端同步，当传输图像帧的有效图像数据时，发送端和接收端处于进入工作状态，当图像帧的有效图像数据传输完之后，发送端和接收端从工作状态进入帧间低功耗状态，以实现细粒度(帧间)的低功耗技术。
发送端：
先发送图像帧(图8以Frame N为例)的有效图像数据，发送完图像帧的有效图像数据后发送帧间休眠序列(HIML_PHY_LP_VBK)，并进入帧间低功耗状态(LP-VBK)。下一图像帧(图8以Frame N+1为例)的有效图像数据的起始发送时刻与发送帧间休眠序列的时刻之间的时间差(时长)记作vblank，并且vblank≥第二预设阈值。提前于第二预定时刻，通过AUX-CH发送唤醒序列(wake-up)，唤醒接收端。wake-up由前导(Preamble)、物理唤醒(phy wake)、STOP构成。当到达第二预定时刻，并且在唤醒序列中的phy wake结束时刻之前，唤醒物理层进入工作状态，唤醒物理层的时长记作T tx_phy_wake_up， T tx_phy_wake_up结束之时发送第二物理层锁定序列(HIML_PHY_LOCK)，第二物理层锁定序列发送时长记作T tx_phy_lock。T tx_phy_wake_up和T tx_phy_lock均属于vblank内。T tx_phy_lock结束之时发送下一图像帧的有效图像数据。
接收端：
先接收图像帧(图8以Frame N为例)的有效图像数据，接收完Frame N的有效图像数据后接收帧间休眠序列(HIML_PHY_LP_VBK)，并进入帧间低功耗状态(LP-VBK)。下一图像帧(图8以Frame N+1为例)的有效图像数据的起始接收时刻与收到帧间休眠序列的时刻之间的时间差(时长)也记作vblank。当检测到通过AUX-CH发送的唤醒序列(wake-up)后，唤醒物理层进入工作状态，唤醒物理层的时长记作T rx_phy_wake_up，T rx_phy_wake_up结束之时接收第二物理层锁定序列(HIML_PHY_LOCK)，第二物理层锁定序列的接收时长记作T rx_lock。T rx_phy_wake_up和T rx_lock均属于vblank内。T rx_lock结束之时接收下一行的有效图像数据。
接收端可能在接收第二物理层锁定序列过程中就完全唤醒，那么此时接收端只需等待接收下一图像帧的有效图像数据即可。
图9为本申请发送端装置900的一个示例性的结构图，如图9所示，本实施例的装置可以设置于上述图像源中，该发送端装置900可以包括：发送模块901和处理模块902，其中，
发送模块901，用于向接收端发送图像帧中当前行的有效图像数据；处理模块902，用于在发送完所述当前行的有效图像数据之后，从工作状态切换到行间低功耗状态；在确定第一预定条件满足时，从所述行间低功耗状态切换到所述工作状态；所述发送模块901，还用于在所述工作状态下向所述接收端发送所述当前行的下一行的有效图像数据。
在一种可能的实现方式中，所述处理模块902，具体用于在发送完所述当前行的有效图像数据之后，在确定第二预定条件满足时，从所述工作状态切换到所述行间低功耗状态。
在一种可能的实现方式中，所述处理模块902，具体用于确定第一时间差大于或等于第一预设阈值，所述第一时间差用于指示所述下一行的有效图像数据的起始发送时刻和所述当前行的有效数据的完成发送时刻之间的差值。
在一种可能的实现方式中，所述发送模块901，还用于向所述接收端发送行间休眠序列，所述行间休眠序列用于指示所述接收端从工作状态进入行间低功耗状态。
在一种可能的实现方式中，所述处理模块902，具体用于确定第一计数器的计数值到达第一预定时刻，其中，在向所述接收端发送所述行间休眠序列时所述第一计数器启动计数，并且所述第一预定时刻早于所述下一行的有效图像数据的起始发送时刻。
在一种可能的实现方式中，所述行间休眠序列为K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5。
在一种可能的实现方式中，所述发送模块901，还用于向所述接收端发送第一物理层锁定序列，所述第一物理层锁定序列用于指示所述接收端所述第一物理层序列之后的数据为所述下一行的有效图像数据。
在一种可能的实现方式中，所述处理模块902，还用于在发送完所述图像帧的有效图像数据之后，从所述工作状态切换到帧间低功耗状态；在确定第三预定条件满足时，从所述帧间低功耗状态切换到所述工作状态；所述发送模块901，还用于在所述工作状态下向 所述接收端发送所述图像帧的下一图像帧的有效图像数据。
在一种可能的实现方式中，所述处理模块902，具体用于在发送完所述图像帧的有效图像数据之后，在确定第四预定条件满足时，从所述工作状态切换到所述帧间低功耗状态。
在一种可能的实现方式中，所述处理模块902，具体用于确定第二时间差大于或等于第二预设阈值，所述第二时间差用于指示所述下一图像帧的有效图像数据的起始发送时刻和所述图像帧的有效图像数据的完成发送时刻之间的差值。
在一种可能的实现方式中，所述发送模块901，还用于向所述接收端发送帧间休眠序列，所述帧间休眠序列用于指示所述接收端从工作状态进入帧间低功耗状态。
在一种可能的实现方式中，所述处理模块902，具体用于确定第二计数器的计数值到达第二预定时刻，其中，在向所述接收端发送所述帧间休眠序列时所述第二计数器启动计数，并且所述第二预定时刻早于所述下一图像帧的有效图像数据的起始发送时刻。
在一种可能的实现方式中，所述帧间休眠序列为K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。
在一种可能的实现方式中，所述发送模块901，还用于向所述接收端发送唤醒序列，所述唤醒序列用于指示所述接收端从帧间低功耗状态进入工作状态。
在一种可能的实现方式中，所述发送模块901，还用于向所述接收端发送第二物理层锁定序列，所述第二物理层锁定序列用于指示所述接收端所述第二物理层序列之后的数据为所述下一图像帧的有效图像数据。
本实施例的装置，可以用于执行图3或图6所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图10为本申请接收端装置1000的一个示例性的结构图，如图10所示，本实施例的装置可以设置于上述屏幕中，该接收端装置1000可以包括：接收模块1001和处理模块1002，其中，
接收模块1001，用于接收发送端发送的图像帧中当前行的有效图像数据；处理模块1002，用于在接收到所述发送端发送的行间休眠序列之后，从工作状态切换到行间低功耗状态；在确定第五预定条件满足时，从所述行间低功耗状态切换到所述工作状态；所述接收模块1001，还用于在所述工作状态下接收所述发送端发送的所述当前行的下一行的有效图像数据。
在一种可能的实现方式中，所述处理模块1002，具体用于确定第三计数器的计数值到达第三预定时刻，其中，在接收到所述发送端发送的所述行间休眠序列时所述第三计数器启动计数，并且所述第三预定时刻早于所述下一行的有效图像数据的起始接收时刻。
在一种可能的实现方式中，所述行间休眠序列为K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5。
在一种可能的实现方式中，所述处理模块1002，还用于在接收到所述发送端发送的帧间休眠序列之后，从所述工作状态切换到帧间低功耗状态；在接收到所述发送端发送的唤醒序列之后，从所述帧间低功耗状态切换到所述工作状态；所述接收模块1001，还用于在所述工作状态下接收所述发送端发送的下一图像帧的有效图像数据。
在一种可能的实现方式中，所述帧间休眠序列为K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。
本实施例的装置，可以用于执行图3或图6所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、特定应用集成电路(application-specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array,FPGA)或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。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。本申请实施例公开的方法的步骤可以直接体现为硬件编码处理器执行完成，或者用编码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
上述各实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
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、或者计算机软件和电子硬件的结合来实现。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，为描述的方便和简洁，上述描述的系统、装置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，所揭露的系统、装置和方法，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。另一点，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，可以是电性，机械或其它的形式。
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，也可以两个或两个以上单元集成在一个单元中。
所述功能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(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(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、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，可轻易想到变化或替换，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所述权利要求的保护范围为准。

Claims (44)

  1. 一种图像传输方法，其特征在于，包括：
    向接收端发送图像帧中当前行的有效图像数据；
    在发送完所述当前行的有效图像数据之后，从工作状态切换到行间低功耗状态；
    在确定第一预定条件满足时，从所述行间低功耗状态切换到所述工作状态；
    在所述工作状态下向所述接收端发送所述当前行的下一行的有效图像数据。
  2. 根据权利要求1所述的方法，其特征在于，所述在发送完所述当前行的有效图像数据之后，从工作状态切换到行间低功耗状态，包括：
    在发送完所述当前行的有效图像数据之后，在确定第二预定条件满足时，从所述工作状态切换到所述行间低功耗状态。
  3. 根据权利要求2所述的方法，其特征在于，所述确定第二预定条件满足，包括：
    确定第一时间差大于或等于第一预设阈值，所述第一时间差用于指示所述下一行的有效图像数据的起始发送时刻和所述当前行的有效数据的完成发送时刻之间的差值。
  4. 根据权利要求1-3中任一所述的方法，其特征在于，在发送完所述当前行的有效图像数据之后，所述方法还包括：
    向所述接收端发送行间休眠序列，所述行间休眠序列用于指示所述接收端从工作状态进入行间低功耗状态。
  5. 根据权利要求4所述的方法，其特征在于，所述确定第一预定条件满足，包括：
    确定第一计数器的计数值到达第一预定时刻，其中，在向所述接收端发送所述行间休眠序列时所述第一计数器启动计数，并且所述第一预定时刻早于所述下一行的有效图像数据的起始发送时刻。
  6. 根据权利要求4或5所述的方法，其特征在于，所述行间休眠序列为K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5。
  7. 根据权利要求1-6中任一所述的方法，其特征在于，所述从所述行间低功耗状态切换到所述工作状态之后，所述方法还包括：
    向所述接收端发送第一物理层锁定序列，所述第一物理层锁定序列用于指示所述接收端所述第一物理层序列之后的数据为所述下一行的有效图像数据。
  8. 根据权利要求1-7中任一项所述的方法，其特征在于，所述方法还包括：
    在发送完所述图像帧的有效图像数据之后，从所述工作状态切换到帧间低功耗状态；
    在确定第三预定条件满足时，从所述帧间低功耗状态切换到所述工作状态；
    在所述工作状态下向所述接收端发送所述图像帧的下一图像帧的有效图像数据。
  9. 根据权利要求8所述的方法，其特征在于，所述在发送完所述图像帧的有效图像数据之后，从所述工作状态切换到帧间低功耗状态，包括：
    在发送完所述图像帧的有效图像数据之后，在确定第四预定条件满足时，从所述工作状态切换到所述帧间低功耗状态。
  10. 根据权利要求9所述的方法，其特征在于，所述确定第四预定条件满足，包括：
    确定第二时间差大于或等于第二预设阈值，所述第二时间差用于指示所述下一图像帧的有效图像数据的起始发送时刻和所述图像帧的有效图像数据的完成发送时刻之间的差 值。
  11. 根据权利要求8-10中任一项所述的方法，其特征在于，在发送完所述图像帧的有效图像数据之后，所述方法还包括：
    向所述接收端发送帧间休眠序列，所述帧间休眠序列用于指示所述接收端从工作状态进入帧间低功耗状态。
  12. 根据权利要求11所述的方法，其特征在于，所述确定第三预定条件满足，包括：
    确定第二计数器的计数值到达第二预定时刻，其中，在向所述接收端发送所述帧间休眠序列时所述第二计数器启动计数，并且所述第二预定时刻早于所述下一图像帧的有效图像数据的起始发送时刻。
  13. 根据权利要求11或12所述的方法，其特征在于，所述帧间休眠序列为K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。
  14. 根据权利要求8-13中任一项所述的方法，其特征在于，所述从所述帧间低功耗状态切换到所述工作状态之后，所述方法还包括：
    向所述接收端发送唤醒序列，所述唤醒序列用于指示所述接收端从帧间低功耗状态进入工作状态。
  15. 根据权利要求14所述的方法，其特征在于，所述向所述接收端发送唤醒序列之后，所述方法还包括：
    向所述接收端发送第二物理层锁定序列，所述第二物理层锁定序列用于指示所述接收端所述第二物理层序列之后的数据为所述下一图像帧的有效图像数据。
  16. 一种图像传输方法，其特征在于，包括：
    接收发送端发送的图像帧中当前行的有效图像数据；
    在接收到所述发送端发送的行间休眠序列之后，从工作状态切换到行间低功耗状态；
    在确定第五预定条件满足时，从所述行间低功耗状态切换到所述工作状态；
    在所述工作状态下接收所述发送端发送的所述当前行的下一行的有效图像数据。
  17. 根据权利要求16所述的方法，其特征在于，所述确定第五预定条件满足，包括：
    确定第三计数器的计数值到达第三预定时刻，其中，在接收到所述发送端发送的所述行间休眠序列时所述第三计数器启动计数，并且所述第三预定时刻早于所述下一行的有效图像数据的起始接收时刻。
  18. 根据权利要求16或17所述的方法，其特征在于，所述行间休眠序列为K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5。
  19. 根据权利要求16-18中任一项所述的方法，其特征在于，所述方法还包括：
    在接收到所述发送端发送的帧间休眠序列之后，从所述工作状态切换到帧间低功耗状态；
    在接收到所述发送端发送的唤醒序列之后，从所述帧间低功耗状态切换到所述工作状态；
    在所述工作状态下接收所述发送端发送的下一图像帧的有效图像数据。
  20. 根据权利要求19所述的方法，其特征在于，所述帧间休眠序列为K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。
  21. 一种发送端装置，其特征在于，包括：
    发送模块，用于向接收端发送图像帧中当前行的有效图像数据；
    处理模块，用于在发送完所述当前行的有效图像数据之后，从工作状态切换到行间低功耗状态；在确定第一预定条件满足时，从所述行间低功耗状态切换到所述工作状态；
    所述发送模块，还用于在所述工作状态下向所述接收端发送所述当前行的下一行的有效图像数据。
  22. 根据权利要求21所述的装置，其特征在于，所述处理模块，具体用于在发送完所述当前行的有效图像数据之后，在确定第二预定条件满足时，从所述工作状态切换到所述行间低功耗状态。
  23. 根据权利要求22所述的装置，其特征在于，所述处理模块，具体用于确定第一时间差大于或等于第一预设阈值，所述第一时间差用于指示所述下一行的有效图像数据的起始发送时刻和所述当前行的有效数据的完成发送时刻之间的差值。
  24. 根据权利要求21-23中任一所述的装置，其特征在于，所述发送模块，还用于向所述接收端发送行间休眠序列，所述行间休眠序列用于指示所述接收端从工作状态进入行间低功耗状态。
  25. 根据权利要求24所述的装置，其特征在于，所述处理模块，具体用于确定第一计数器的计数值到达第一预定时刻，其中，在向所述接收端发送所述行间休眠序列时所述第一计数器启动计数，并且所述第一预定时刻早于所述下一行的有效图像数据的起始发送时刻。
  26. 根据权利要求24或25所述的装置，其特征在于，所述行间休眠序列为K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5。
  27. 根据权利要求21-26中任一所述的装置，其特征在于，所述发送模块，还用于向所述接收端发送第一物理层锁定序列，所述第一物理层锁定序列用于指示所述接收端所述第一物理层序列之后的数据为所述下一行的有效图像数据。
  28. 根据权利要求21-27中任一项所述的装置，其特征在于，所述处理模块，还用于在发送完所述图像帧的有效图像数据之后，从所述工作状态切换到帧间低功耗状态；在确定第三预定条件满足时，从所述帧间低功耗状态切换到所述工作状态；
    所述发送模块，还用于在所述工作状态下向所述接收端发送所述图像帧的下一图像帧的有效图像数据。
  29. 根据权利要求28所述的装置，其特征在于，所述处理模块，具体用于在发送完所述图像帧的有效图像数据之后，在确定第四预定条件满足时，从所述工作状态切换到所述帧间低功耗状态。
  30. 根据权利要求29所述的装置，其特征在于，所述处理模块，具体用于确定第二时间差大于或等于第二预设阈值，所述第二时间差用于指示所述下一图像帧的有效图像数据的起始发送时刻和所述图像帧的有效图像数据的完成发送时刻之间的差值。
  31. 根据权利要求28-30中任一项所述的装置，其特征在于，所述发送模块，还用于向所述接收端发送帧间休眠序列，所述帧间休眠序列用于指示所述接收端从工作状态进入帧间低功耗状态。
  32. 根据权利要求31所述的装置，其特征在于，所述处理模块，具体用于确定第二计数器的计数值到达第二预定时刻，其中，在向所述接收端发送所述帧间休眠序列时所述 第二计数器启动计数，并且所述第二预定时刻早于所述下一图像帧的有效图像数据的起始发送时刻。
  33. 根据权利要求31或32所述的装置，其特征在于，所述帧间休眠序列为K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。
  34. 根据权利要求28-33中任一项所述的装置，其特征在于，所述发送模块，还用于向所述接收端发送唤醒序列，所述唤醒序列用于指示所述接收端从帧间低功耗状态进入工作状态。
  35. 根据权利要求34所述的装置，其特征在于，所述发送模块，还用于向所述接收端发送第二物理层锁定序列，所述第二物理层锁定序列用于指示所述接收端所述第二物理层序列之后的数据为所述下一图像帧的有效图像数据。
  36. 一种接收端装置，其特征在于，包括：
    接收模块，用于接收发送端发送的图像帧中当前行的有效图像数据；
    处理模块，用于在接收到所述发送端发送的行间休眠序列之后，从工作状态切换到行间低功耗状态；在确定第五预定条件满足时，从所述行间低功耗状态切换到所述工作状态；
    所述接收模块，还用于在所述工作状态下接收所述发送端发送的所述当前行的下一行的有效图像数据。
  37. 根据权利要求36所述的装置，其特征在于，所述处理模块，具体用于确定第三计数器的计数值到达第三预定时刻，其中，在接收到所述发送端发送的所述行间休眠序列时所述第三计数器启动计数，并且所述第三预定时刻早于所述下一行的有效图像数据的起始接收时刻。
  38. 根据权利要求36或37所述的装置，其特征在于，所述行间休眠序列为K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5,K28.5。
  39. 根据权利要求36-38中任一项所述的装置，其特征在于，所述处理模块，还用于在接收到所述发送端发送的帧间休眠序列之后，从所述工作状态切换到帧间低功耗状态；在接收到所述发送端发送的唤醒序列之后，从所述帧间低功耗状态切换到所述工作状态；
    所述接收模块，还用于在所述工作状态下接收所述发送端发送的下一图像帧的有效图像数据。
  40. 根据权利要求39所述的装置，其特征在于，所述帧间休眠序列为K28.5,K28.5,K27.7,K27.7,K27.7,K27.7,K27.7,K27.7。
  41. 一种发送端设备，其特征在于，包括：
    一个或多个处理器；
    存储器，用于存储一个或多个程序；
    当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如权利要求1-15中任一项所述的方法。
  42. 一种接收端设备，其特征在于，包括：
    一个或多个处理器；
    存储器，用于存储一个或多个程序；
    当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如权利要求16-20中任一项所述的方法。
  43. 一种计算机可读存储介质，其特征在于，包括计算机程序，所述计算机程序在计算机上被执行时，使得所述计算机执行权利要求1-20中任一项所述的方法。
  44. 一种计算机程序，其特征在于，当所述计算机程序被计算机执行时，用于执行权利要求1-20中任一项所述的方法。
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CN102355747A (zh) * 2011-07-22 2012-02-15 重庆长安汽车股份有限公司 一种车用无线通信数据接收方法
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