CN103812600B9 - Data transmission system and method - Google Patents
Data transmission system and method Download PDFInfo
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- CN103812600B9 CN103812600B9 CN201210443763.4A CN201210443763A CN103812600B9 CN 103812600 B9 CN103812600 B9 CN 103812600B9 CN 201210443763 A CN201210443763 A CN 201210443763A CN 103812600 B9 CN103812600 B9 CN 103812600B9
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
- H04L1/0073—Special arrangements for feedback channel
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Abstract
The invention discloses a data transmission system, which is used for a mobile industry processor interface and comprises a main control device and a data transmission device, wherein the main control device comprises a control module used for generating a control signal according to a feedback signal; and a packet encoding module, coupled to the control module, for encoding an original packet into a transmission packet according to an original packet and the control signal, so as to perform a transmission operation; and a controlled device, which comprises a packet decoding module for decoding the transmission packet into the original packet for transmitting to a display device; and a feedback module, coupled to the packet decoding module, for generating a feedback signal to the control module of the master device according to the decoding status of the controlled device, so as to switch a transmission mode of the transmission operation.
Description
Technical field
The present invention relates to a kind of data communication system and method, more particularly to a kind of decoded state for monitoring a controlled device, with the data communication system and method for the transmission mode between correspondence switching master control set and controlled device.
Background technology
With the development of science and technology, mobile device such as intelligent mobile phone, personal digital assistant (Personal Digital Assistant, PDA) etc., incorporate increasing communication and Display Technique, to realize application function miscellaneous. In order to control various application function simultaneously, a high speed processing interface is needed between the processor and display panel of intelligent handheld device, to improve volume of transmitted data, and then lift the functions such as the image quality or touch-control of Display panel. In the case, industry leading manufacturer proposes mobile Industry Processor Interface (Mobile Industry Processor Interface, MIPI), for the Application Processor Interface of hand-held device is standardized.
Fig. 1 is refer to, Fig. 1 is the schematic diagram in known technology using the data communication system 10 for moving Industry Processor Interface. As shown in figure 1, data communication system 10 includes an a master control set 100(such as main system microprocessors) and an a controlled device 120(such as display device microprocessors). One original packet is encoded to a transmission packe P_Tra by master control set 100, and is transmitted to controlled device 120, and wherein transmission packe P_Tra includes original frequency packet and an original data packet. Correspondence is decoded as original packet P_Ori after controlled device 120 receives transmission packe P_Tra, and then transmission original packet P_Ori to display devices 140 are shown. It is interesting to note that the data transfer that mobile Industry Processor Interface is applicable includes two kinds of transmission modes, the first is low-power transmission pattern, and is high speed transmission mode for second. When multiple display datas (corresponding to foregoing multiple original packets) that master control set 100 is intended to be shown in display device 140 are transmitted to controlled device 120, master control set 100 just enters high speed transmission mode. In the case, multiple display datas will be encoded as multiple transmission packe P_Tra, be received by controlled device 120 by the transmission means of a differential wave. When master control set 100 is not required to transmit multiple display datas, master control set 100 just enters low-power transmission pattern, to wait the high speed transmission mode restarted next time. It is interesting to note that the transmission means of the differential wave of high speed transmission mode, the transmission rate between master control set 100 and controlled device 120 can be improved, and then reduce the pin number of master control set 100 or controlled device 120, while reaching the work of volume of transmitted data high.
Refer again to Fig. 2A to Fig. 2 C, wherein Fig. 2A to Fig. 2 C are that the schematic diagram of different pieces of information transmission signal is carried out between master control set 100 and controlled device 120 in Fig. 1, wherein transmission packe P_Tra includes frame data D_Frame1～D_FrameN, and each frame data include row data D_Line1～D_LineM, code name N, M is the resolution ratio according to display device 140, different numerical value can be corresponded to, and low-power transmission pattern can correspond to a high voltage pulse signal (for example, 1.2 volts), a low voltage pulse signal (for example, 300 millivolts) is then corresponded to as high speed transmission mode. as shown in Fig. 2A to Fig. 2 C, when the transmission of master control set 100 and the display device data to be carried out of controlled device 120, i.e. from low-power transmission pattern switching be high speed transmission mode when, correspondence is converted to low voltage pulse signal by data transfer signal from high voltage pulse signal, to carry out the transmission of display device data. accordingly, row data D_Line1～D_LineM that frame data D_Frame1～D_FrameN and each frame data in transmission packe P_Tra are included, to be transmitted using high speed transmission mode, then data transfer signal will be presented with low voltage pulse signal. however, Fig. 2A to Fig. 2 C each use different transmission means, carry out data transmission between low-power transmission pattern and high speed transmission mode. by taking Fig. 2A as an example, it is (to correspond to high speed transmission mode) between any two row data all to come back to low-power transmission pattern once, as as a example by Fig. 2 B, it is (to correspond to high speed transmission mode) between any two frame data just to come back to low-power transmission pattern once, as a example by such as Fig. 2 C, its corresponding master control set 100 is after high speed transmission mode is entered, after the row data D_Line1～D_LineM end of transmissions that all frame data D_Frame1～D_FrameN and each frame data will be waited to be included, low-power transmission pattern is just come back to again.
It is interesting to note that when low-power transmission pattern is carried out, master control set 100 can monitor whether whether correctly controlled device 120 be correctly received transmission packe P_Tra, and decoding transmission packe P_Tra; When high speed transmission mode is carried out, master control set 100 will be unable to whether monitoring controlled device 120 is properly received or decodes transmission packe P_Tra so that controlled device 120 must can just be corresponded to until coming back to low-power transmission pattern and detected. In the case, master control set 100 will likely in real time discover the transmission packe P_Tra that controlled device 120 has missed receiving portion, and still continuing to use high speed transmission mode carries out the transmission work of display device data, display device is caused correctly and efficiently to show this display device data. Furthermore, if master control set 100 (correspondence can be between any two row data or frame data) when high speed transmission mode is carried out, if master control set 100 switches back into low-power transmission pattern at any time, may cause to transmit the discontinuous of data, cause controlled device 120 to make a mistake or consume unnecessary stand-by period and operating energy, further also limit the range of application of data communication system 10.
Therefore, a kind of data communication system and method more efficiently is provided, a transmission mode between adaptive ground one master control set of switching and a controlled device, enable that an initial data is correctly received and decoded by controlled device, the stand-by period of transmitting procedure or unnecessary energy dissipation are reduced simultaneously, it has also become the important topic of this area.
The content of the invention
Therefore, it is to provide a kind of data communication system and method more efficiently that the main object of the present invention is, a transmission mode between correspondence one master control set of switching and a controlled device, enable that an initial data is correctly received and decoded by controlled device, while reducing the stand-by period of transmitting procedure or unnecessary energy dissipation.
The present invention discloses a kind of data communication system, and for a movement Industry Processor Interface, the data communication system includes a master control set, includes a control module, for according to a feedback signal, producing a control signal; And a block encoding module, the control module is coupled to, for according to an original packet and the control signal, being encoded to an original packet for a transmission packe, to carry out a transmission job; And a controlled device, include a block decoding module, for decoding the transmission packe for the original packet, to transmit to a display device; And a feedback module, the block decoding module is coupled to, for the decoding situation according to the controlled device, a feedback signal to the control module of the master control set is produced, to switch a transmission mode of the transmission work.
The present invention separately discloses a kind of data transferring method, and for a data communication system of a movement Industry Processor Interface, the data transferring method includes according to a feedback signal, produces a control signal; According to an original packet and the control signal, one original packet of coding is a transmission packe, to carry out a transmission job; According to the transmission work and the transmission packe, the transmission packe is decoded for the original packet, to transmit to a display device; And according to the decoding situation of the transmission packe, produce a feedback signal to switch a transmission mode of the transmission work.
Brief description of the drawings
Fig. 1 is the schematic diagram in known technology using the data communication system for moving Industry Processor Interface.
Fig. 2A to Fig. 2 C are that the schematic diagram of different pieces of information transmission signal is carried out between master control set and controlled device in Fig. 1.
Fig. 3 is the schematic diagram of the data communication system of the embodiment of the present invention one.
Fig. 4 is the schematic diagram of the transmission data-signal of data transmission system in Fig. 3.
Fig. 5 is the flow chart of the data transfer flow of the embodiment of the present invention one.
Fig. 6 is the schematic diagram of another controlled device in Fig. 3 data communication systems.
Fig. 7 be Fig. 6 in controlled device in it is different transmission data-signals corresponding to produce flag signal schematic diagrames.
Fig. 8 is the flow chart of another data transfer flow of the embodiment of the present invention.
Fig. 9 is the schematic diagram of another controlled device in Fig. 3 data communication systems.
Figure 10 is the flow chart of another data transfer flow of the embodiment of the present invention.
Figure 11 is the flow chart of another data transfer flow of the embodiment of the present invention.
Figure 12 is the flow chart of another data transfer flow of the embodiment of the present invention.
Figure 13 is the flow chart that the bus of the embodiment of the present invention one overturns flow.
Figure 14 is the flow chart that the embodiment of the present invention one monitors flow.
Figure 15 is the flow chart of the instruction monitoring flow of the embodiment of the present invention one.
Figure 16 is that the embodiment of the present invention one opens and closes the flow chart for judging flow.
Wherein, description of reference numerals is as follows:
10th, 30 data communication system
100th, 300 master control set
120th, 320,620,920 controlled device
140th, 340 display device
3000 control modules
3002 block encoding modules
3200 block decoding modules
3202 feedback modules
50th, 80,90,11,12 data transfer flow
13 buses overturn flow
14 monitoring flows
15 instruction monitoring flows
16 keyings judge flow
500, 502, 504, 506, 508, 510, 800, 802, 804, 806, 808, 810, 812, 1000, 1002, 1004, 1006, 1008, 1010, 1100, 1102, 1104, 1106, 1108, 1110, 1200, 1202, 1204, 1206, 1208, 1210, 1300, 1302, 1304, 1306, 1308, 1400, 1402, 1404, 1406, 1408, 1410, 1500, 1502, 1504, 1506, 1508, 1510, 1600, 1602, 1604, 1606, 1608, 1610 steps
6200 first monitoring modules
9200 second monitoring modules
D_Frame1～D_FrameN frame data
D_Line1～D_LineM row data
P_Ori original packets
P_Tra transmission packes
RG1, RG2 buffer
S_C1 control signals
S_FB feedback signals
S_Flag1, S_Flag2 flag signal
S_Syn synchronizing signals
TM1, TM2 timer
Specific embodiment
Some vocabulary have been used in the middle of this specification and claims book to censure specific component. It should be understood that, manufacturer may call same component with different nouns. This specification and claims book is not in the way of the difference of title is used as difference component, but the difference with component functionally is used as the benchmark of difference. It is an open term in "comprising" of this specification and claims book mentioned in, therefore " include but be not limited to " should be construed to. Additionally, " electric connection " one word be herein comprising it is any directly and indirectly electrical connection. Therefore, if a first device is electrically connected at a second device described in text, represent the first device and may be directly connected to the second device, or the second device is coupled indirectly to by other devices or connection means.
Fig. 3 is refer to, Fig. 3 is the schematic diagram of the data communication system 30 of the embodiment of the present invention one. As shown in figure 3, data communication system 30 is for moving Industry Processor Interface (MIPI) and similar to the data communication system 10 shown in Fig. 1, including master control set 300, controlled device 320 and display device 340. Master control set 300 can be a processor, include a control module 3000 and a block encoding module 3002. Control module 3000 can be according to the control instruction of a user or a feedback signal S_FB, and correspondence produces a control signal S_C1. Block encoding module 3002 receives original packet P_Ori and according to control signal S_C1, original packet P_Ori is encoded to after transmission packe P_Tra and is transmitted again to controlled device 320. It is a liquid crystal display drive chip that controlled device 320 is common, includes a block decoding module 3200 and a feedback module 3202. Block decoding module 3200 receives transmission packe P_Tra, and be decoded as transmission packe P_Tra to be transmitted further to display device 340 after original packet P_Ori by correspondence. Decoding situation of the feedback module 3202 according to block decoding module 3200, control modules 3000 of the correspondence passback feedback data S_FB to master control set 300, master control set 300 is set to pass through feedback data S_FB, whether monitoring controlled device 320 in adaptive ground is correctly received or decodes original packet P_Ori, and then switches the transmission mode between master control set 300 and controlled device 320.
Preferably, original packet P_Ori is to correspond to an image data, data communication system 30 for moving Industry Processor Interface is transmitted, and can be switched between low-power transmission pattern or high speed transmission mode, enables the image data of the correctly and efficiently display of high resolution of display device 340. Certainly, for clear explanation, with display device 340 be independently arranged controlled device 320 by the present embodiment, those skilled in the art are can directly by controlled device 320(for example, liquid crystal display drive chips) it is integrated in display device 340, the transmission that enable master control set directly carries out display data with display device 340 is exchanged, and is not used to limit scope of the invention. In addition, the composition of original packet P_Ori is also well known to those skilled in the art, original packet P_Ori includes multiple frame data, and each frame data then include multiple row data, and each above-mentioned multiple frame data are to that should have a frame data synchronizing signal, and each the plurality of row data are to that should have data line synchronizing signal, original packet P_Ori can be correctly transmitted to provide data communication system 30, and then accurately be will not be described here in the corresponding image datas of original packet P_Ori are shown in display device 340.
In addition, if controlled device 320 includes a storage module (not shown), an instruction mode (command mode) transmission means is carried out by corresponding between master control set 300 and controlled device 320; If controlled device 320 will carry out an image mode (video mode) transmission means not comprising there is storage module between master control set 300 and controlled device 320. It is preferred that in instruction mode transmission means or image mode transmission means, transmission packe P_Tra also includes acquiescence write-in packet format, such as 0X2C. Certainly, those skilled in the art can also combine other default packets with the acquiescence write-in packet format 0X2C of transmission packe P_Tra to be transmitted by transmission packe conventional in mobile Industry Processor Interface.
In simple terms, the data transmission system 30 that the present embodiment is provided applies to image mode transmission means, original packet P_Ori is encoded to transmission packe P_Tra by master control set 300, in being transmitted under high speed transmission mode to controlled device 320, and be decoded as original packet P_Ori to transmit to display device 340 by its correspondence, controlled device 320 is also dynamically decoded as the situation of original packet P_Ori, correspondence feedback feedback data S_FB to master control set 300 according to transmission packe P_Tra simultaneously. After controlled device 320 is successfully received transmission packe P_Tra every time (or can set completed decoding transmission packe P_Tra as original packet P_Ori after), the correspondence of feedback module 3202 is not shown in producing a synchronizing signal S_Syn(Fig. 3, illustrated in Fig. 4), and feedback signal S_FB also includes synchronizing signal S_Syn, further indicate the control module 3000 of master control set 300 to be not necessary to switch the transmission work between master control set 300 and controlled device 320, that is, be maintained at high speed transmission mode. On the other hand, when controlled device 320 is without being correctly received transmission packe P_Tra, feedback module 3202 cannot be corresponded to and produce synchronizing signal S_Syn, now feedback signal S_FB does not include synchronizing signal S_Syn, control module 3000 will switch the transmission work between master control set 300 and controlled device 320, i.e., switch to low-power transmission pattern from the transmission work of high speed transmission mode.
Fig. 4 is refer again to, Fig. 4 is the schematic diagram of the transmission data-signal of data transmission system 30 in Fig. 3. As shown in figure 4, the frame data D_Frame1～D_FrameN(of similar known technology Fig. 2A to Fig. 2 C, transmission packe P_Tra is also comprising the row data in each frame data) all it is transmitted using high speed transmission mode, and correspond to low voltage pulse signal. Additionally, the synchronizing signal S_Syn being also labeled with figure in the correspondence generation feedback data of controlled device 320 S_FB. It is (or can set completed decoding transmission packe P_Tra as original packet P_Ori after) after being successfully received transmission packe P_Tra every time when controlled device 320, feedback module 3202 then fixes passback synchronizing signal S_Syn to master control set 300, and then informs that master control set 300 is continuing with high speed transmission mode and is transmitted. However, as shown in the 3rd frame data D_Frame3 of Fig. 4, because controlled device 320 is that nothing is correctly received transmission packe P_Tra, causing feedback module 3202 to correspond to and producing synchronizing signal S_Syn. In the case, master control set 300 has no and receives synchronizing signal S_Syn, causes control module 3000 again to switch back into low-power transmission pattern, and form a Reset Status as shown in Figure 4. By after one section of stand-by period of user's acquiescence, master control set 300 can produce control signal S_C1 by control module 3000 again, and correspondence switches back into high speed transmission mode, to carry out the transmission work of the multiple display datas between master control set 300 and controlled device 320.
The function mode of the data transmission system 30 of the present embodiment can further be summarized as a data transfer flow 50, as shown in Figure 5. Data transfer flow 50 is comprised the steps of
Step 500: starts.
Step 502: control module 3000 can be according to feedback signal S_FB, and correspondence produces control signal S_C1.
Step 504: according to original packet P_Ori and control signal S_C1, coding original packet P_Ori is transmission packe P_Tra to block encoding module 3002, to transmit to controlled device 320.
Step 506: block decoding module 3200 receives transmission packe P_Tra, while it is original packet P_Ori to decode transmission packe P_Tra, to transmit original packet P_Ori to display device 340.
Step 508: feedback module 3202 is according to whether received transmission packe P_Tra, or whether original packet P_Ori has been decoded as according to transmission packe P_Tra, correspondence produces the transmission work between synchronizing signal S_Syn to control module 3000, and then adaptive ground switching master control set 300 and controlled device 320.
Step 510: terminates.
The detailed operation of each step in data transfer flow 50, refers to the relevant paragraph explanation of previous embodiment and Fig. 3 to Fig. 4, will not be described here. Notably, the working method of step 508, can grouped into arbitrary combinations decoding module 3200 whether be correctly received transmission packe P_Tra and block decoding module 3200 and whether transmission packe P_Tra be decoded as original packet P_Ori, as whether producing the judgment mechanism of synchronizing signal S_Syn. Certainly, those skilled in the art can also increase other judgment mechanisms newly, for that when controlled device 320 is in high speed transmission mode, can have correctly received transmission packe P_Tra, synchronizing signal S_Syn person be produced according to this, be scope of the invention.
Fig. 6 is refer to, Fig. 6 is the schematic diagram of another controlled device 620 suitable for Fig. 3 data communication systems 30. Controlled device 620 may replace controlled device 320, and data transmission system 30 using controlled device 620 is also used for image mode transmission means. The controlled device 320 in Fig. 3 is compared to, the controlled device 620 of Fig. 6 also includes one first monitoring module 6200, is coupled between block decoding module 3200 and feedback module 3202. First monitoring module 6200 also includes an a buffer RG1 and timer TM1, and produces a flag signal S_Flag1 by timer TM1. Buffer RG1 is to store the synchronizing signal S_Syn produced by feedback module 3202, and driving timing device TM1 enters a timework. Timer TM1 judges that whether buffer RG1, in synchronizing signal S_Syn is persistently stored in a default time of timework, the signal intensity of flag signal S_Flag1 is changed with correspondence, and be back to master control set 300.
Refer again to Fig. 7, Fig. 7 be in Fig. 6 controlled device 620 in the schematic diagrames that flag signal S_Flag1 is produced corresponding to different transmission data-signals. As shown in Fig. 6 and Fig. 7, it is (or can set completed decoding transmission packe P_Tra as original packet P_Ori after) after being successfully received transmission packe P_Tra every time when controlled device 620, feedback module 3202 is then fixed to produce synchronizing signal S_Syn to be stored in buffer RG1, and flag signal S_Flag1 is set as high state to be back to master control set 300 by driving timing device TM1, and then inform that master control set 300 is continuing with high speed transmission mode and is transmitted. However, when controlled device 320 is without the 3rd frame data D_Frame3 is properly received, feedback module 3202 will be unable to correspondence and produce synchronizing signal S_Syn. When timer TM1 judges that buffer RG1 does not store synchronizing signal S_Syn in default time, then flag signal S_Flag1 is set as low state and is back to master control set 300, make master control set 300 switch back into low-power transmission pattern to enter Reset Status. By after the stand-by period of user's acquiescence, master control set 300 can produce control signal S_C1 by control module 3000 again, and correspondence switches back into high speed transmission mode, to carry out the transmission work of the multiple display datas between master control set 300 and controlled device 320. In the case, when buffer RG1 stores synchronizing signal S_Syn again in default time, flag signal S_Flag1 is set as high state by timer TM1 again, is maintained master control set 300 to be continuing with high speed transmission mode and is transmitted.
Further, a data transfer flow 80 can be summarized as using the function mode of the data transmission system 30 of controlled device 620, as shown in Figure 8. Data transfer flow 80 is comprised the steps of
Step 800: starts.
Step 802: control module 3000 can be according to flag signal S_Flag1, and correspondence produces control signal S_C1.
Step 804: according to original packet P_Ori and control signal S_C1, coding original packet P_Ori is transmission packe P_Tra to block encoding module 3002, to transmit to controlled device 320.
Step 806: block decoding module 3200 receives transmission packe P_Tra, while it is original packet P_Ori to decode transmission packe P_Tra, to transmit original packet P_Ori to display device 340.
Step 808: feedback module 3202 is according to whether received transmission packe P_Tra, or original packet P_Ori has been decoded as according to transmission packe P_Tra, correspondence produces synchronizing signal S_Syn to be stored in the buffer RG1 of the first monitoring module 6200, drive the timer TM1 of the first monitoring module 6200 to enter a timework simultaneously, flag signal S_Flag1 is produced with correspondence.
Step 810: whether timer TM1 judges buffer RG1 in persistently storing synchronizing signal S_Syn in the default time of timework, correspondence changes transmission work of the signal intensity of flag signal S_Flag1 to be back between master control set 300, and then adaptive ground switching master control set 300 and controlled device 320.
Step 812: terminates.
The detailed operation of each step in data transfer flow 80, refers to the relevant paragraph explanation of previous embodiment and Fig. 3 to Fig. 6, will not be described here. Notably, those skilled in the art are can be according to different demands, the generation opportunity of flag signal S_Flag1 and low state signal intensity high in correspondence modification/conversion step 810, certainly, controlled device 620 can also increase other judgment mechanisms newly to feed back the signal of similar flag signal S_Flag1 to master control set 300, high speed transmission mode or low-power transmission pattern person are switched on correspondence, scope of the invention is all.
Fig. 9 is refer to, Fig. 9 is the schematic diagram of another controlled device 920 suitable for Fig. 3 data communication systems 30. Controlled device 920 may replace controlled device 320, and be for instruction mode transmission means using the data transmission system 30 for having controlled device 920. As shown in figure 9, controlled device 920 also includes one second monitoring module 9200, it is coupled between block decoding module 3200 and feedback module 3202. It is compared to the controlled device 620 in Fig. 6, whether second monitoring module 9200 is to include acquiescence write-in packet format 0X2C in monitoring the transmission packe P_Tra that block decoding module 3200 is received, and second monitoring module 9200 also include an a buffer RG2 and timer TM2, and a flag signal S_Flag2 is produced by timer TM2. Buffer RG2 correspondence storage acquiescence write-in packet format 0X2C, while driving timing device TM2 enters a timework. Whether timer TM2 judges buffer RG2 in acquiescence write-in packet format 0X2C is persistently stored in a default time of timework, and correspondence changes the signal magnitude of flag signal S_Flag2 to be back to master control set 300. Shown in Fig. 7, include acquiescence write-in packet format 0X2C when controlled device 920 is all successfully received transmission packe P_Tra(every time) and when being stored in buffer RG2, driving timing device TM2 is high state to set flag signal S_Flag2 by block decoding module 3200, and then be back to master control set 300 and be transmitted informing that master control set 300 is continuing with high speed transmission mode. However, when buffer RG2 in exceed do not stored in default time synchronizing signal S_Syn when, flag signal S_Flag2 is then set as low state by timer TM2, to be back to master control set 300, make master control set 300 switch transmission mode.
Further, including the function mode of the data transmission system 30 of controlled device 920 can be summarized as a data transfer flow 90, as shown in Figure 10. Data transfer flow 90 is comprised the steps of
Step 1000: starts.
Step 1002: control module 3000 can be according to flag signal S_Flag2, and correspondence produces control signal S_C1.
Step 1004: according to original packet P_Ori and control signal S_C1, coding original packet P_Ori is transmission packe P_Tra to block encoding module 3002, to transmit to controlled device 320, wherein transmission packe P_Tra includes acquiescence write-in packet format 0X2C.
Step 1006: block decoding module 3200 receives transmission packe P_Tra, it is original packet P_Ori to decode transmission packe P_Tra simultaneously, to transmit original packet P_Ori to display device 340, the buffer RG2 of simultaneous transmission acquiescence write-in packet format 0X2C to second monitoring modules 9200.
Step 1008: whether the timer TM2 of the second monitoring module 9200 is to judge buffer RG2 in persistently storing acquiescence write-in packet format 0X2C in the default time of timework, the signal magnitude of flag signal S_Flag2 is changed with correspondence and master control set 300 is back to, and then the transmission work between adaptive ground switching master control set 300 and controlled device 320.
Step 1010: terminates.
The detailed operation of each step in data transfer flow 90, refers to the relevant paragraph explanation of previous embodiment and Fig. 3 to Fig. 9, will not be described here. Notably, those skilled in the art are can be according to different demands, the generation opportunity of flag signal S_Flag and low state signal intensity high in correspondence modification/conversion step 1008, or the acquiescence write-in packet format 0X2C used in modification/change the present embodiment, to meet the transmission packe commonly used in mobile Industry Processor Interface. Handover mechanism on synchronizing signal S_Syn in the data transfer flow 50,80 that can also be arranged in pairs or groups as step 1008, the data transmission system 30 that offer includes controlled device 920 can simultaneously utilize flag signal S_Flag and synchronizing signal S_Syn, and then switching master control set 300 is reached in high speed transmission mode or low-power transmission pattern person, also it is scope of the invention.
Refer again to Figure 11, Figure 11 is the schematic diagram of another data transfer flow 11 of the embodiment of the present invention, wherein data transfer flow 11 applies to include the data transmission system 30 of controlled device 620 or controlled device 920, and can arrange in pairs or groups respectively image mode transmission means or instruction mode transmission means. As shown in figure 11, data transfer flow 11 is comprised the steps of
Step 1100: starts.
Step 1102: control module 3000 can be according to flag signal S_Flag1, S_Flag2, and correspondence produces control signal S_C1.
Step 1104: according to original packet P_Ori and control signal S_C1, coding original packet P_Ori is transmission packe P_Tra to block encoding module 3002, to transmit to controlled device 620 or controlled device 920.
Step 1106: whether controlled device 620 is judged in receiving synchronizing signal S_Syn in the default time of timework using timer TM1, or whether controlled device 920 judges can be compared to 0X2C in receiving acquiescence write-in packet format in the default time of timework using timer TM2, and then judges whether to be worked overtime into one.
Step 1108: when timer TM1 or timer TM2 judgements have been enter into working overtime, controlled device 620 or controlled device 920 produce a reset signal to display device 340 respectively, display device 340 is set to enter a Reset Status, corresponding master control set 300 is to revert to low-power transmission pattern, and otherwise master control set 300 is to continue with working in high speed transmission mode.
Step 1110: terminates.
Content as described in the step 1106 of data transfer process 11, work overtime is that can respectively correspond to flag signal S_Flag1 or flag signal S_Flag2 is changed into the situation of low state from high state, and reset signal (not shown) is produced by controlled device 620 or controlled device 920 respectively, the image data representated by the pause display original packet of display device 340 P_Ori is ordered about, and enters the new image datas to be shown such as Reset Status. Preferably, master control set 300 in the present embodiment is using the data transfer signal as shown in Fig. 2A or Fig. 2 B, (high speed transmission mode is corresponded in any two row data or between any two frame data) and come back to low-power transmission pattern once, and no longer monitor controlled device 620,920 flag signal S_Flag1, S_Flag2 of feedbacks at any time by master control set 300, it is applied to the more working methods of display device 340 to provide data transmission system 30.
Refer again to Figure 12, Figure 12 is the schematic diagram of another data transfer flow 12 of the embodiment of the present invention, wherein data transfer flow 12 is and can arrange in pairs or groups respectively image mode transmission means or instruction mode transmission means to contain the data transmission system 30 for having controlled device 620 or controlled device 920. As shown in figure 12, data transfer flow 12 is comprised the steps of
Step 1200: starts.
Step 1202: control module 3000 can be according to flag signal S_Flag1, S_Flag2, and correspondence produces control signal S_C1.
Step 1204: according to original packet P_Ori and control signal S_C1, coding original packet P_Ori is transmission packe P_Tra to block encoding module 3002, to transmit to controlled device 620 or controlled device 920.
Step 1206: when controlled device 620 or controlled device 920 are when receiving transmission packe P_Tra for the first time, then controlled device 620 or controlled device 920 will produce an enabling signal, correspondence drives display device 340 to enter a start-up mode, to prepare image data displaying.
Step 1208: when controlled device 620 or controlled device 920 are that non-first time receives transmission packe P_Tra, then into the step of data transfer flow 11 1106 and step 1108 working on.
Step 1210: terminates.
Content as described in the step 1204 of data transfer process 12, when controlled device 620 or controlled device 920 are when receiving transmission packe P_Tra for the first time, correspondence is produced enabling signal by controlled device 620 or controlled device 920, and image data displaying is prepared to drive display device 340 into start-up mode. As for the detailed operation of other steps of data transfer flow 12, the job description of data transfer flow 11 is all referred to, will not be described here. Therefore, data transfer process 12 is combined by data transfer flow 11, the more working methods of display device 340 is applied to so that data transmission system 30 can be provided.
In figure 3, master control set 300 also overturns (Bus turn around using a bus, BTA) flow and one the 3rd monitoring module (not shown) is included, with the reception situation of monitor in real time controlled device 320, and then under decision image mode transmission means, whether the switching of high speed transmission mode or low-power transmission pattern is carried out between master control set 300 and controlled device 320. For example, Figure 13 is refer to, Figure 13 is the schematic diagram of the bus upset flow 13 for being applicable data transmission system 30 in Fig. 3. As shown in figure 13, bus upset flow 13 is comprised the steps of
Step 1300: starts.
Step 1302: after master control set 300 proceeds by high speed transmission mode and transmits N number of transmission packe P_Tra, using the 3rd monitoring module monitoring the reception situation of controlled device 320.
Step 1304: when correctly passback feedback signal S_FB is to master control set 300 for controlled device 320, then corresponds to one correct value of passback to the 3rd monitoring module, master control set 300 is continued with high speed transmission mode, otherwise carry out step 1306.
Step 1306: when the incorrect passback feedback signal S_FB of controlled device 320 is to master control set 300, then corresponds to one erroneous values of passback (or an error reporting) to the 3rd monitoring module, master control set 300 is switched to low-power transmission pattern.
Step 1308: terminates.
Notably, bus overturn flow 13 the step of 1304 or step 1306 in, 3rd monitoring module of master control set 300 is the correct value using the passback of controlled device 320, the transmission means between erroneous values or error reporting, and then switching master control set 300 and controlled device 320. Those skilled in the art can also correspond to the work for combining bus upset flow 13 and data transfer flow 50, and then with reference to feedback signal S_FB and above-mentioned numerical value/report, the more working methods of display device 340 are applied to provide data transmission system 30. As for the N number of transmission packe P_Tra given tacit consent in step 1302, also dependent on the size of different users' demand correspondence adjustment N, it is not used to limit scope of the invention.
Furthermore, display device 340 as shown in Figure 3 or controlled device 320 can also additionally comprise a buffer (not shown), the transmission packe P_Tra that correspondence storage master control set 300 is transmitted, and using the signal specific in transmission packe P_Tra, for example, frame data synchronizing signal or row data synchronizing signal, the cumulative display device 340 of correspondence or controlled device 320 have been received in buffer frame data synchronizing signal or the quantity of row data synchronizing signal. After master control set 300 has transmitted N number of transmission packe P_Tra, one the 4th monitoring module (not shown) that is additionally comprised by master control set 300 carries out a monitoring flow, the quantity of the signal specific that added up in correspondence monitoring buffer, and then determine under image mode transmission means whether the switching of different transmission mode is carried out between master control set 300 and controlled device 320. For example, Figure 14 is refer to, Figure 14 is the schematic diagram of a monitoring flow 14 of the data transmission system 30 suitable for Fig. 3. As shown in figure 14, monitoring flow 14 is comprised the steps of
Step 1400: starts.
Step 1402: after master control set 300 proceeds by high speed transmission mode, the N number of transmission packe P_Tra correspondences that will be transmitted are stored in display device 340(or controlled device 320) buffer in, and then the cumulative signal specific for having stored transmission packe P_Tra quantity.
Step 1404: master control set 300 monitors the quantity of the signal specific added up in buffer using the 4th monitoring module, and then switches the transmission mode between master control set 300 and controlled device 320.
Step 1406: when the quantity of the signal specific added up in buffer is greater than a default number, the 4th monitoring module then judges that master control set 300 continues with high speed transmission mode, otherwise carries out step 1408.
Step 1408: when the quantity of the signal specific added up in buffer is no more than default number, the 4th monitoring module judges that master control set 300 switches to low-power transmission pattern.
Step 1410: terminates.
Notably, 1404 in step 1408 the step of flow 14 are monitored, whether the 4th monitoring module of master control set 300 is the quantity for judging the signal specific added up in buffer more than the transmission means between default number, and then switching master control set 300 and controlled device 320. Those skilled in the art can also correspond to the work for combining monitoring flow 14 and data transfer flow 50, and then with reference to feedback signal S_FB and the quantity of signal specific, the more working methods of display device 340 are applied to provide data transmission system 30. As for the N number of transmission packe P_Tra given tacit consent in step 1402, also dependent on the size of different users' demand correspondence adjustment N, it is not used to limit scope of the invention.
In addition, please be further continued for referring to Fig. 3, after master control set 300 has transmitted N number of transmission packe P_Tra, master control set 300 performs automatic a transmission corresponding instruction (not shown) and is stored in a buffer of master control set 300, and one the 5th monitoring module included using master control set 300, under being identified in image mode transmission means or instruction mode transmission means, whether high-speed transfer link correctly connects master control set 300 and controlled device 320. For example, Figure 15 is refer to, Figure 15 is the schematic diagram of an instruction monitoring flow 15 of the data transmission system 30 suitable for Fig. 3. As shown in figure 15, instruction monitoring flow 15 is comprised the steps of
Step 1500: starts.
Step 1502: after master control set 300 transmits N number of transmission packe P_Tra, master control set 300 will automatically perform transmission corresponding instruction, to be stored in the buffer of master control set 300.
Step 1504: master control set 300, to monitor the transmission corresponding instruction in buffer, and then confirms whether high-speed transfer link connects master control set 300 and controlled device 320 using the 5th monitoring module.
Step 1506: when high-speed transfer link is that the 5th monitoring module then judges that master control set 300 continues with high speed transmission mode, otherwise carries out step 1508 between connection master control set 300 and controlled device 320.
Step 1508: when high-speed transfer link is not connected between master control set 300 and controlled device 320, the 5th monitoring module judges that master control set 300 switches to low-power transmission pattern.
Step 1510: terminates.
Notably, in instruction monitoring flow 15, according to user's different demands, the transmission corresponding instruction being stored in buffer is the change situation that can correspond to unlike signal, such as low signal, high signals, low high signals change (i.e. toggle signals) etc., and the 5th monitoring module of master control set 300 is whether the change situation for judging above-mentioned signal meets the transmission means between the situation of user's acquiescence, and then switching master control set 300 and controlled device 320. Certainly, those skilled in the art can also correspond to the work of combined command monitoring flow 15 and data transfer flow 50, and then with reference to feedback signal S_FB and the change situation of above-mentioned signal, the more working methods of display device 340 are applied to provide data transmission system 30. As for the N number of transmission packe P_Tra given tacit consent in step 1502, also dependent on the size of different users' demand correspondence adjustment N, it is not used to limit scope of the invention.
Finally, it is further continued for referring to Fig. 3, under image mode transmission means, after master control set 300 transmits N number of transmission packe P_Tra using high speed transmission mode, the feedback module 3202 of controlled device 320 is not all corresponded to and produces synchronizing signal S_Syn. In the case, master control set 300 will determine that controlled device 320 is not properly received transmission packe P_Tra, and then control the correspondence of controlled device 320 to produce a shutdown signal (not shown) to transmit to display device 340, display device 340 is set to terminate current work to close display work, and display work is restarted in wait. Can be corresponded to after producing multiple synchronizing signal S_Syn when controlled device is properly received multiple transmission packe P_Tra and feedback module 3202, in the case, controlled device 320 is just corresponded to and produces an enabling signal (not shown) to display device 340, display device 340 is re-started display work. For example, refer to Figure 16, Figure 16 is that another keying of the data transmission system 30 suitable for Fig. 3 judges the schematic diagram of flow 16. As shown in figure 16, open and close and judge that flow 16 is comprised the steps of
Step 1600: starts.
Step 1602: when feedback module 3202 does not all correspond to generation synchronizing signal S_Syn after master control set 300 transmits N number of transmission packe P_Tra, performs step 1604, otherwise continues step 1608.
Step 1604: controlled device 320 produces shutdown signal, makes display device 340 close display work, and display work is restarted in wait.
Step 1606: after feedback module 3202 has accumulated M synchronizing signal S_Syn of generation after master control set 300 transmits N number of transmission packe P_Tra, performs step 1608.
Step 1608: controlled device 320 produces enabling signal, makes display device 340 carry out display work.
Step 1610: terminates.
It is interesting to note that those skilled in the art can correspond to the work that flow 16 and data transfer flow 50 are judged with reference to keying, the more working methods of display device 340 are applied to provide data transmission system 30. As for the numerical value of N or M given tacit consent in step 1602 or step 1606, can be all sized according to different users' demand correspondence, be not used to limit scope of the invention.
In sum, the embodiment of the present invention is to provide a kind of data communication system and method, one original packet is encoded to a transmission packe by a master control set and transmitted to a controlled device, and a feedback signal to master control set is returned by controlled device, make master control set dynamically the decoding situation of monitoring controlled device or reception situation, the transmission mode of master control set is switched according to this in a high speed transmission mode or a low-power transmission pattern. In addition, master control set can also monitor the display device for being coupled to controlled device, or arrange in pairs or groups other monitoring module/flows, as whether switching the judgement of transmission mode, with the mobile Industry Processor Interface suitable for an instruction/image mode, enable that initial data is correctly received by controlled device and display device, and then reduce the stand-by period of transmitting procedure or unnecessary energy dissipation, while improving the range of application of data communication system.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for a person skilled in the art, the present invention there can be various modifications and variations. All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included within the scope of the present invention.
Claims (30)
1. a kind of data communication system, for a movement Industry Processor Interface, it is characterised in that the data communication system includes:
One master control set, includes:
One control module, for according to a feedback signal, producing a control signal; And
One block encoding module, it is coupled to the control module, for according to an original packet and the control signal, an original packet is encoded for a transmission packe, to carry out the transmission work under a transmission mode, wherein the transmission mode is a high speed transmission mode or a low-power transmission pattern is determined according to the control signal; And
One controlled device, includes:
One block decoding module, for decoding the transmission packe for the original packet, to transmit to a display device; And
One feedback module, is coupled to the block decoding module, for the decoding situation according to the controlled device, the feedback signal to the control module of the master control set is produced, to switch the transmission mode.
2. data communication system as claimed in claim 1, it is characterised in that the feedback signal is also to include a synchronizing signal.
3. data communication system as claimed in claim 2, it is characterised in that the synchronizing signal is received by the control module, correspondence produces the control signal to determine that the block encoding module carries out the high speed transmission mode.
4. data communication system as claimed in claim 2, it is characterised in that the controlled device also includes one first monitoring module, in monitoring the feedback module in a set time and judge whether to receive the synchronizing signal of feedback module generation.
5. data communication system as claimed in claim 1, it is characterised in that when the feedback signal does not include a synchronizing signal, then the control module is to produce the control signal to carry out the low-power transmission pattern to determine the block encoding module.
6. data communication system as claimed in claim 1, it is characterised in that the transmission packe also includes acquiescence write-in packet, and the controlled device also includes one second monitoring module, in judging whether to receive acquiescence write-in packet in a set time.
7. data communication system as claimed in claim 6, it is characterised in that when second monitoring module judges not received within the set time acquiescence write-in packet, then correspond to and produce a reset signal to reset pattern to enter to the display device.
8. data communication system as claimed in claim 7, it is characterised in that when the block decoding module is when receiving acquiescence write-in packet for the first time, then to correspond to and produce an enabling signal to the display device to enter a start-up mode.
9. data communication system as claimed in claim 1, it is characterised in that the master control set also includes one the 3rd monitoring module, flow is overturn according to a bus, determines the transmission mode of the block encoding module.
10. data communication system as claimed in claim 1, it is characterized in that, the display device also includes buffer correspondence and receives the original packet from the controlled device, and the master control set also includes one the 4th monitoring module, according to a monitoring flow in after the transmission packe that the master control set transmits a fixed qty, a reception result of the buffer is monitored, to determine the transmission mode of the block encoding module.
11. data communication systems as claimed in claim 1, it is characterized in that, after the master control set transmits the transmission packe of a fixed qty, then correspond to and produce a transmission corresponding instruction to be stored in a buffer, and the master control set also includes one the 5th monitoring module, according to an instruction monitoring flow, monitor the transmission corresponding instruction to determine the transmission mode.
12. data communication systems as claimed in claim 1, it is characterized in that, if after feedback signal transmission packe not comprising a synchronizing signal and the master control set using the high speed transmission mode one fixed qty of transmission, the controlled device produces an enabling signal to the display device to enter a start-up mode.
13. data communication systems as claimed in claim 1, it is characterised in that the transmission packe is to include multiple frame data, and each the plurality of frame data are to include multiple row data.
14. data communication systems as claimed in claim 13, it is characterised in that each the plurality of frame data are that, to that should have a frame data synchronizing signal, and each the plurality of row data are to that should have data line synchronizing signal.
15. data communication systems as claimed in claim 14, it is characterised in that the high speed transmission mode is to transmit the plurality of frame data and its corresponding the plurality of row data by a differential fashion.
16. data communication systems as claimed in claim 1, it is characterised in that the movement Industry Processor Interface is using an image mode transmission means or an instruction mode transmission means, to transmit an initial data to the display device.
17. data communication systems as claimed in claim 16, it is characterised in that under the instruction mode transmission means, it is 0X2C forms that the transmission packe also include acquiescence write-in packet to be.
A kind of 18. data transferring methods, for a data communication system of a movement Industry Processor Interface, it is characterised in that the data transferring method includes:
According to a feedback signal, a control signal is produced;
According to an original packet and the control signal, one original packet of coding is a transmission packe, and to carry out the transmission work under a transmission mode, wherein the transmission mode is a high speed transmission mode or a low-power transmission pattern is determined according to the control signal;
According to the transmission work and the transmission packe, the transmission packe is decoded for the original packet, to transmit to a display device; And
Decoding situation according to the transmission packe, produces the feedback signal to switch the transmission mode.
19. data transferring methods as claimed in claim 18, it is characterised in that also comprising when the feedback signal includes a synchronizing signal, correspondence carries out the high speed transmission mode.
20. data transferring methods as claimed in claim 18, it is characterised in that also comprising when the feedback signal does not include a synchronizing signal, correspondence carries out the low-power transmission pattern.
21. data transferring methods as claimed in claim 20, it is characterised in that also comprising one second monitoring module is utilized, judge, in whether acquiescence write-in packet is received in a set time, the transmission mode to be determined with correspondence.
22. data transferring methods as claimed in claim 21, it is characterised in that also comprising when second monitoring module judges not received within the set time acquiescence write-in packet, correspondence produces a reset signal, to reset the display device.
23. data transferring methods as claimed in claim 22, it is characterised in that also comprising when first time acquiescence write-in packet is received, correspondence produces an enabling signal to start the display device.
24. data transferring methods as claimed in claim 18, it is characterised in that also comprising flow and one the 3rd monitoring module is overturn using a bus, to determine the transmission mode.
25. data transferring methods as claimed in claim 18, it is characterized in that, also comprising flow and one the 4th monitoring module is monitored using one, result is received to determine the transmission mode in after the transmission packe to the buffer of the display device for transmitting a fixed qty, monitor the buffer one.
26. data transferring methods as claimed in claim 18, it is characterized in that, also comprising using instruction monitoring flow and one the 5th monitoring module, after the transmission packe and correspondence for transmitting a fixed qty produce one to transmit corresponding instruction in a buffer, monitor the transmission corresponding instruction to determine the transmission mode.
27. data transferring methods as claimed in claim 18, it is characterized in that, also comprising after the feedback signal does not include a synchronizing signal and transmits the transmission packe of a fixed qty using the high speed transmission mode, produce an enabling signal to the display device to enter a start-up mode.
28. data transferring methods as claimed in claim 18, it is characterised in that the high speed transmission mode is also comprising using the multiple frame data of differential fashion transmission and its corresponding multiple row data.
29. data transferring methods as claimed in claim 18, it is characterised in that the movement Industry Processor Interface is also included and utilizes an image mode transmission means or an instruction mode transmission means, to transmit an initial data to the display device.
30. data transferring methods as claimed in claim 29, it is characterised in that the instruction mode transmission means is 0X2C also comprising the form being grouped using an acquiescence write-in.
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| CN201710557866.6A CN107493155B (en) | 2012-11-08 | 2012-11-08 | Data transmission system and method |
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| CN101673336B (en) * | 2008-09-12 | 2012-05-23 | 晨星软件研发(深圳)有限公司 | Decoding device and decoding method |
| US20110310980A1 (en) * | 2010-06-22 | 2011-12-22 | Qualcomm Mems Technologies, Inc. | Apparatus and methods for processing frames of video data across a display interface using a block-based encoding scheme and a tag id |
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| 基于MIPI规范的LCD驱动接口设计;苏晓峰;《中国优秀硕士学位论文全文数据库（电子期刊）·信息科技辑》;20111108;第5-50页 * |
| 温浪明.基于MIP-S\\DSI协议的LCD驱动接口设计.《中国优秀硕士学位论文全文数据库（电子期刊）·信息科技辑》.2011,第4页至第31页. * |
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| CN107493155B (en) | 2021-02-05 |
| CN103812600B (en) | 2017-09-15 |
| CN103812600A (en) | 2014-05-21 |
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