CN103488603A - Data interactive transmission method and system and display - Google Patents
Data interactive transmission method and system and display Download PDFInfo
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Abstract
The invention discloses a data interactive transmission method and system and a display. According to the data interactive transmission method and system and the display, an external data interface is arranged at a display terminal and meanwhile improvement is performed on the data transmission mode of the existing signal transmission line, so that data interactive transmission between external mobile phones or other devices of the external data interface of the display terminal and a host terminal is achieved, wherein the external mobile phones or the other devices of the external data interface of the display terminal are read through the display terminal; data interactive transmission between data which are read and stored through the host terminal and the external mobile phones or the other devices of the external data interface of the display terminal is also achieved; the efficiency of data interactive transmission of the mobile phones or the other devices and a PC (Personal Computer) is improved; users can use conveniently; the experience degree of the users is increased.
Description
Technical field
The present invention relates to the data interaction transmission technique field, relate in particular to a kind of data interaction transmission method, system and display.
Background technology
Along with the development of infotech, mobile phone or miscellaneous equipment are increasing by the data volume of TF card or SD card storage, and it is also frequent all the more to carry out the demand of data interaction transmission between PC.Generally, mobile device and PC carry out data interaction transmission be data line by being complementary or card reader be inserted in the PC host side USB interface on carry out.
In prior art, there is following problem in the data interaction transmission mode of mobile phone or miscellaneous equipment and PC: 1., in the situation that there is no card reader or the data line that is complementary, carry out the data interaction transmission with PC and can be restricted; 2. the external equipment that there is usb type, for example, the fast development of external access of mouse, external connection keyboard, charger for mobile phone etc., make the USB interface quantity of current PC host side can not meet the demand that all external equipments are used simultaneously, when all USB interface all in use, if new user demand is arranged, need to pull out some external equipments, then use these USB interface.Problems of the prior art have been brought a lot of inconvenience, efficiency and user experience that impact is used when the data interaction of carrying out mobile phone or miscellaneous equipment and PC is transmitted to the user.
Summary of the invention
The purpose of this invention is to provide a kind of data interaction transmission method, system and display, the poor problem of inconvenient operation, inefficiency and user experience produced when in the solution prior art, mobile phone or miscellaneous equipment and PC carry out the data interaction transmission.
For realizing purpose of the present invention, the invention provides a kind of data interaction transmission method, carry out exchanges data for the memory storage of the external data interface by the display end and host side, comprising:
The 1st step, receive the exchanges data instruction, and display end and host side are carried out the transmission of DDC channel data and consulted;
The 2nd step, after described DDC channel data transmission is consulted successfully, described host side and described display end are changed the protocol negotiation of DDC tunneling traffic, after described replacing DDC tunneling traffic protocol negotiation success, described DCC tunneling traffic agreement are replaced by the usb communication agreement;
The 3rd step, after the described external data of described display end reading displayed device end external data interface, by the described DCC passage that is replaced by the usb communication agreement, described external data is transferred to described host side, perhaps, after described host side reads the internal data of storage, by the described DCC passage that is replaced by the usb communication agreement, described internal data transfer is arrived to described display end.
Preferably, described display end external data interface, comprise: at least one USB interface and/or at least one SD card slot, described display end reads the described external data of described SD card slot by serial peripheral equipment interface SPI communication protocol, read the described external data of described USB interface by the usb communication agreement; The sheet of described SD card slot selects pin to be connected with the SD_CS/ serial ports of the display control chip of display end; The MOSI pin of SD card slot is connected with the SPI data of the display control chip of display end input serial ports; The MISO pin of SD card slot is connected with the SPI data of the display control chip of display end output serial ports; The SCK pin of SD card slot is connected with the SPI clock serial ports of the display control chip of display end.
Preferably, in the 1st step, described display end and host side are carried out the transmission of DDC channel data and are consulted to be undertaken by I2C communication protocol.
Preferably, in the 2nd step, after consulting successfully, also comprise that the EEPROM of extending display identification data EDID that the display end is connected to the memory interface of DDC passage carries out write-protected step.
Preferably, described DDC passage is any DDC passage in VGA, DVI, HDMI, DP, MHL signal transmssion line.
The present invention also provides a kind of data interaction transmission system, it is characterized in that, comprising: display end, signal transmssion line, host side;
Described display end is connected with described host side by described signal transmssion line, for receiving the exchanges data instruction, carries out the transmission of DDC channel data with described host side and consults; Also for after the external data that reads described display end external data interface, by the described DCC passage that is replaced by the usb communication agreement, described external data is transferred to described host side, after perhaps receiving the internal data that described host side reads storage, by the described described internal data that is replaced by the DCC channel transfer of usb communication agreement;
Described host side is for after consulting successfully in described DDC channel data transmission, changed the protocol negotiation of DDC tunneling traffic with described display end, after changing DDC tunneling traffic protocol negotiation success, described DCC tunneling traffic agreement is replaced by the usb communication agreement, after also reading the external data of described display end external data interface for receiving described display end, by the described described external data that is replaced by the DCC channel transfer of usb communication agreement, after perhaps reading the internal data of storage, transmit described internal data by the described DCC passage that is replaced by the usb communication agreement to described display end,
Comprise the DDC passage in described signal transmssion line.
Preferably, described display end external data interface, comprise: at least one USB interface and/or at least one SD card slot, described display end comprises the SCALER control module, described SCALER control module reads the described external data of described SD card slot by SPI communication protocol, read the described external data of described USB interface by the usb communication agreement; The sheet of described SD card slot selects pin to be connected with the SD_CS/ serial ports of the display control chip of display end; The MOSI pin of SD card slot is connected with the SPI data of the display control chip of display end input serial ports; The MISO pin of SD card slot is connected with the SPI data of the display control chip of display end output serial ports; The SCK pin of SD card slot is connected with the SPI clock serial ports of the display control chip of display end.
Preferably, to carry out that DDC channel data transmission consults be to be undertaken by I2C communication protocol for described display end and host side.
Preferably, described display end also for, after described host side and described display end are changed DDC tunneling traffic protocol negotiation success, the EEPROM of EDID that the display end is connected to the memory interface of DDC passage carries out write-protect.
Preferably, described signal transmssion line be in VGA, DVI, HDMI, DP, MHL signal transmssion line any.
The present invention also provides a kind of display, comprise: display external data interface, described display data interface is comprised of at least one USB interface and/or at least one SD card slot, and the sheet of described SD card slot selects pin to be connected with the SD_CS/ serial ports of the display control chip of display end; The MOSI pin of SD card slot is connected with the SPI data of the display control chip of display end input serial ports; The MISO pin of SD card slot is connected with the SPI data of the display control chip of display end output serial ports; The SCK pin of SD card slot is connected with the SPI clock serial ports of the display control chip of display end;
Described display is connected with main frame by signal transmssion line, for receiving the exchanges data instruction, carries out the transmission of DDC channel data with described main frame and consults; After reading the external data of described display data interface, by the DCC passage based on the usb communication agreement, described external data is transferred to described main frame, after perhaps receiving the internal data that described host side reads storage, by the described described internal data that is replaced by the DCC channel transfer of usb communication agreement.
Preferably, described display also comprises: the SCALER control module, described SCALER control module reads the described external data of described SD card slot by SPI communication protocol, read the described external data of described USB interface by the usb communication agreement.
Beneficial effect of the present invention is, the invention provides a kind of data interaction transmission method, system and display, by at the display end, the external data interface being set, and the data transfer mode of existing signal transmssion line is improved simultaneously, realized that reading the connecting with external mobile phone of its external data interface or miscellaneous equipment and host side by the display end carries out the data interaction transmission, also realized that reading the data of storage and display end external data interface connecting with external mobile phone or miscellaneous equipment from host side carries out the data interaction transmission, improved the efficiency of mobile phone or miscellaneous equipment and PC data interaction transmission, convenient for users, increased user experience.
The accompanying drawing explanation
Fig. 1 is method flow diagram provided by the invention;
Fig. 2 is display end processing flow chart when in method provided by the invention, the display end is to host side transmission data;
Fig. 3 is host side processing flow chart when in method provided by the invention, the display end is to host side transmission data;
Fig. 4 is host side processing flow chart when in method provided by the invention, host side is to display end transmission data;
Fig. 5 is display end processing flow chart when in method provided by the invention, host side is to display end transmission data;
Fig. 6 is I2C data layout schematic diagram provided by the invention;
Fig. 7 is USB interface hardware connection diagram provided by the invention;
Fig. 8 is system architecture schematic diagram a provided by the invention;
Fig. 9 is system architecture schematic diagram b provided by the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be understood to specific embodiment described herein only in order to explain the present invention, be not limited to protection scope of the present invention.
As shown in Figure 1, the invention provides a kind of data interaction transmission method, comprise the steps:
Step S101, receive the exchanges data instruction, and display end and host side are carried out the transmission of DDC channel data and consulted;
Above-mentioned steps is described is the method step of display end provided by the invention while to host side, sending data.Step S101 specific implementation can be as shown in Figure 2,
Step S201, display is opening, and the present invention need to be operated by user interface, and user interface is shown by display;
Step S202, the judgement user selects the external data input menu by screen menu type regulative mode (OSD), if jump to step S203;
Step S203, the display end sends the instruction of shaking hands of using for the DDC/instruction interface (DDC/CI) of remote diagnosis and control to host side;
Step S204, judge whether the display end receives the instruction of replying of host side transmission, if use
The transmission of DDC channel data is consulted successfully, jumps to step S205;
After sending the request success by DDC channel transfer data in enormous quantities to host side at the aforementioned display device end, carry out following step,
Step S102, after described DDC channel data transmission is consulted successfully, described host side and described display end are changed the protocol negotiation of DDC tunneling traffic, after described replacing DDC tunneling traffic protocol negotiation success, described DCC tunneling traffic agreement are replaced by the usb communication agreement;
The specific implementation of step S102, as shown in the following step in Fig. 2:
Step S205, the display end sends and changes DDC tunneling traffic protocol instructions to host side;
The DDC passage is generally I2C(Inter-Integrated Circuit) passage, when utilizing the DDC passage to carry out data transmission in enormous quantities, the Data Transport Protocol of DDC passage need to be changed to the usb communication agreement that can transmit data in enormous quantities.
Step S206, judge whether to receive replying of host side, if jump to step S207;
Step S207, to the EEPROM (Electrically Erasable Programmable Read Only Memo) of extending display identification data (EDID)
(EEPROM) carry out write-protect, and carry out DDC tunneling traffic agreement and change to the usb communication agreement;
Step S208, the display end sends and sets up usb communication pattern link order to host side with the usb data form;
Step S209, the display end is received the instruction of replying of host side, the connection of usb communication pattern is successfully established;
After above-mentioned steps, the display end starts to read its external data source, to host side transmit outer data, sees step S103,
Step S103, after the described external data of described display end reading displayed device end external data interface, by the described DCC passage that is replaced by the usb communication agreement, described external data is transferred to described host side, perhaps, after described host side reads the internal data of storage, by the described DCC passage that is replaced by the usb communication agreement, described internal data transfer is arrived to described display end.
The above-mentioned steps specific implementation, as shown in step in Fig. 2,
Step S210, the display end reads the data of SD card or the storage of USB interface place;
Step S211, the display end after treatment, is packaged as the usb data form by the data that read;
Step S212, the display end, with the usb data form, is transferred to host side;
Step S213, judge whether data are sent, and if so, finishes.
After data send to host side, host side or by the data storage received, or carry out other processing.
With display end treatment scheme in Fig. 2, to accordingly, when in method provided by the invention, the display end is to host side transmission data, the host side treatment scheme as shown in Figure 2, comprises the following steps:
Step S301, host side operation DDC channel control unit;
Increase the DDC channel control unit in host side, described DDC channel control unit, DDC passage that can control interface, making it can meet host side and display end communicates in the mode of I2C agreement (DDC-CI instruction), meet the DDC-CI transmission standard, can make host side and display end set up contact and can obtain some necessary information by sending the DDC-CI instruction; Can make again host side and display end communicate in the mode of usb protocol, and provide a window that can receive continuously and send Large Volume Data, can carry out data encoding and decoding, and the data that receive can be stored in the storage space of host side, to complete the fast transport function of Large Volume Data.
Step S302, judge whether to receive that host side sends the DDC-CI instruction that will carry out data transmission in enormous quantities, if jump to step S303;
Step S303, reply and receive the instruction that step S302 sends to the display end;
Step S304, judge whether the replacing communication protocol instruction of receiving that the display end sends, if jump to step S305;
Step S305, reply and agree to change the communication protocol instruction to the display end;
Step S306, the DDC channel control unit, controlling and changing DDC tunneling traffic agreement is the usb communication agreement;
Step S307, judge whether to receive that the request of display end sets up usb communication pattern link order, if jump to step S308;
Step S308, reply and agree to shake hands instruction to the display end;
Step S309, wait for and receive the data that the display end sends;
Step S310, judge whether to receive the data that the display end sends;
Step S311, store the data decode received into the PC storage space, in the storer of host side;
Step S312, judge whether to receive, if finish.
In the present invention, also provide under system architecture of the present invention, when host side is transmitted data to the display end, the host side processing flow chart, as shown in Figure 4, comprise the steps:
Step S401, host side operation DDC channel control unit;
Step S402, judge whether to receive to the display end to send data command, if jump to step S403;
Step S403, the DDC-CI that sends transmission data in enormous quantities to the display end instruction of shaking hands;
Step S404, judge whether to receive that the display end replys, if jump to step S405;
Step S405, send and change the instruction of DDC passage replacing communication protocol to the display end;
Step S406, judge whether to receive that the display end replys, if jump to step S407;
Step S407, change DDC tunneling traffic agreement into the usb communication agreement;
Step S408, DDC channel control unit main control system end sends and sets up usb communication pattern link order to the display end;
Step S409, judge whether to receive replying of display end, if jump to step S410;
Step S410, host side reads the data of storage;
Step S411, judge that host side, whether by the data process coding read, is packaged into USB formatted data bag, if jump to step S412;
Step S412, the DDC channel control unit, control and put data with the USB form to the display end;
Step S412, judge whether to be sent, if finish.
Correspondingly, when host side is transmitted data to the display end, display end processing flow chart, as shown in Figure 5, comprise the steps:
Step S501, display starting;
Step S502, judge whether to receive that host side sends the DDC-CI instruction that will carry out data transmission in enormous quantities, if jump to step S303;
Step S503, reply and receive the instruction that step S302 sends to host side;
Step S504, judge whether the replacing communication protocol instruction of receiving that host side sends, if jump to step S305;
Step S505, reply and agree to change the communication protocol instruction to host side;
Step S506, the DDC channel control unit of host side, controlling and changing DDC tunneling traffic agreement is the usb communication agreement;
Step S507, judge whether to receive that the host side request sets up usb communication pattern link order, if jump to step S508;
Step S508, reply and agree to shake hands instruction to host side;
Step S509, wait for the data that the Receiving Host end sends;
Step S510, judge whether to receive the data that host side sends;
Step S511, store the data decode received into the storage space of SD card or USB, in the external External memory equipment of display end;
Step S512, judge whether to receive, if finish.
Preferably, display end data interface described in method provided by the invention, comprise: at least one USB interface and/or at least one SD card slot, described display end reads the described external data of described SD card slot by SPI communication protocol, read the described external data of described USB interface by the usb communication agreement, after reading, the master chip of display end (SCALER), by its coding, is packaged as the usb data form.Become the USB formatted data to carry out differential transfer the data encoding read.USB supports to signal with the low speed Low-speed of 1.5Mb/s signalling and the full speed of signaling with 12.0M b/s with two kinds of speed.
I2C data layout provided by the invention, as shown in Figure 6, the DDC-CI instruction is transmitted with the I2C formatted data.
DDC clock602 DDC data601, DDC Data is bidirectional data line, DDC clock is clock line.
Preferably, to carry out that DDC channel data transmission consults be to be undertaken by I2C communication protocol for described display end and host side.
Preferably; after consulting successfully, also comprise that the EEPROM (Electrically Erasable Programmable Read Only Memo) EEPROM to the DDC passage of display end carries out write-protected step, prevent the DDC channel protocol after changing; may cause the interference to data in EEPROM, its objective is that protection interface EDID is not modified.
Preferably, described DDC passage is any DDC passage in VGA, DVI, HDMI, DP, MHL signal transmssion line.In above-mentioned several signal wire, all include the DDC passage, can an optional use in the present invention.
Correspondingly, the present invention also provides a kind of data interaction transmission system, comprising: display end, signal transmssion line, host side,
Described display end is connected with described host side by described signal transmssion line, for receiving external data input instruction, carries out the transmission of DDC channel data with described host side and consults; Also, for after the external data that reads described display end data interface, by the described DCC passage that is replaced by the usb communication agreement, described external data is transferred to described host side;
Described host side, for after consulting successfully in described DDC channel data transmission, is changed the protocol negotiation of DDC tunneling traffic with described display end, after consulting successfully, described DCC tunneling traffic agreement is replaced by the usb communication agreement.
Comprise the DDC passage in described signal transmssion line;
As shown in Figure 8, described display end comprises SD card slot, USB interface, master chip Scaler,
Only need to connect following pin for SD card slot Scaler end:
SD_CS/: sheet selects pin, when Scaler arranges SD_CS/ and is low level, just can operate the SD card.
The input of MOSI:SPI data, Scaler reads the data in the SD card from this pin.
MISO:SPI data output, Scaler by this pin to data writing in the SD card.
The SCK:SPI clock.
In concrete scheme, the sheet of SD card selects pin (SD_CS/) to be connected with the SD_CS/ serial ports of the display control chip (scaler) of display end; The MOSI pin of SD card is connected with the SPI data input serial ports of the display control chip (scaler) of display end; The MISO pin of SD card is connected with the SPI data output serial ports of the display control chip (scaler) of display end;
The SCK pin of SD card is connected with the SPI clock serial ports of the display control chip (scaler) of display end.
Only need to connect D+, D-for USB interface Scaler end and get final product, as shown in Figure 7, the IO resource that takies Scaler is few.
Described display end, after described host side and described display end are changed DDC tunneling traffic protocol negotiation success, carries out write-protect WP to the EEPROM of the DDC passage of display end.
Described signal transmssion line be in VGA, DVI, HDMI, DP, MHL signal transmssion line any.
All comprise DDC channel(DDC clock, DDC data in the cable such as VGA now, DVI, HDMI, DP, MHL) and VCC and GND line, therefore on hardware, this four line structures can build I2C communication pattern (VCC, GND, SCL, SDA) by software control, and usb communication pattern (VCC, GND, D+, D-).
Described host side, comprise DDC channel control unit and storer.
As shown in Figure 9, be system module figure of the present invention.
A kind of display is provided in the present invention, has comprised:
The display data interface, described display data interface is comprised of at least one USB interface and/or at least one SD card slot;
Described display is connected with main frame by signal transmssion line, for receiving external data input instruction, carries out the transmission of DDC channel data with described main frame and consults; After reading the external data of described display data interface, by the DCC passage based on the usb communication agreement, described external data is transferred to described main frame.
Above-mentioned, described display also comprises the SCALER unit, and described SCALER unit reads the described external data of described SD card slot by SPI communication protocol, reads the described external data of described USB interface by the usb communication agreement.
In the present invention, the display end is equipped with SD card slot, USB interface, utilize the inner scaler(master chip of display end) read SD storage card or the storage information of USB storage card, and the information such as the filename in storage, file size, file type are presented on OSD, user's operation display button, can be selected the transmission transmission of upper each file shown of OSD.The invention provides a kind of friendly interface to the user, the user can be selected more easily.
In the present invention; at first display and host side (the DDC passage software model) mode by the DDC passage with the DDC-CI instruction communicates; inform that the other side has Large Volume Data to need transmission; display end and host side (DDC channel control unit) discharge bus; and transfer the communication protocol of DDC passage to the USB host-host protocol by I2C; the eeprom of DDC channel interface end is carried out to write-protect simultaneously, prevent that the EDID data are modified.Again display end and host side (DDC channel control unit) are controlled to DDC Path Setup USB pattern communication again and be connected, so just can realize having transmitted the purpose of data with usb protocol fast.
By the present invention, can realize:
Mobile device do not having coupling data line, do not have card reader, host side not to have, under the restrictive condition such as available USB interface, to complete the exchanges data with host side;
2. do not affecting under the normal DDC signal intelligence of host side, utilizing the DDC passage in existing signal wire cable to communicate, do not increasing the excessive data line;
3. the user can directly be used the display end as memory device;
4. can realize the Large Volume Data transmission of display end and host side.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. a data interaction transmission method, carry out exchanges data for the memory storage of the external data interface by the display end and host side, it is characterized in that, comprising:
The 1st step, receive the exchanges data instruction, and display end and host side are carried out the transmission of DDC channel data and consulted;
The 2nd step, after described DDC channel data transmission is consulted successfully, described host side and described display end are changed the protocol negotiation of DDC tunneling traffic, after described replacing DDC tunneling traffic protocol negotiation success, described DCC tunneling traffic agreement are replaced by the usb communication agreement;
The 3rd step, after the described external data of described display end reading displayed device end external data interface, by the described DCC passage that is replaced by the usb communication agreement, described external data is transferred to described host side, perhaps, after described host side reads the internal data of storage, by the described DCC passage that is replaced by the usb communication agreement, described internal data transfer is arrived to described display end.
2. data interaction transmission method according to claim 1, it is characterized in that, described display end external data interface, comprise: at least one USB interface and/or at least one SD card slot, described display end reads the described external data of described SD card slot by serial peripheral equipment interface SPI communication protocol, read the described external data of described USB interface by the usb communication agreement; The sheet of described SD card slot selects pin to be connected with the SD_CS/ serial ports of the display control chip of display end; The MOSI pin of SD card slot is connected with the SPI data of the display control chip of display end input serial ports; The MISO pin of SD card slot is connected with the SPI data of the display control chip of display end output serial ports; The SCK pin of SD card slot is connected with the SPI clock serial ports of the display control chip of display end.
3. data interaction transmission method according to claim 2, is characterized in that, in the 1st step, described display end and host side are carried out the transmission of DDC channel data and consulted to be undertaken by I2C communication protocol.
4. data interaction transmission method according to claim 3, is characterized in that, in the 2nd step, after consulting successfully, also comprises that the EEPROM of extending display identification data EDID that the display end is connected to the memory interface of DDC passage carries out write-protected step.
5. according to the described data interaction transmission method of any one in claim 1-4, it is characterized in that, described DDC passage is any DDC passage in VGA, DVI, HDMI, DP, MHL signal transmssion line.
6. a data interaction transmission system, is characterized in that, comprising: display end, signal transmssion line, host side;
Described display end is connected with described host side by described signal transmssion line, for receiving the exchanges data instruction, carries out the transmission of DDC channel data with described host side and consults; Also for after the external data that reads described display end external data interface, by the described DCC passage that is replaced by the usb communication agreement, described external data is transferred to described host side, after perhaps receiving the internal data that described host side reads storage, by the described described internal data that is replaced by the DCC channel transfer of usb communication agreement;
Described host side is for after consulting successfully in described DDC channel data transmission, changed the protocol negotiation of DDC tunneling traffic with described display end, after changing DDC tunneling traffic protocol negotiation success, described DCC tunneling traffic agreement is replaced by the usb communication agreement, after also reading the external data of described display end external data interface for receiving described display end, by the described described external data that is replaced by the DCC channel transfer of usb communication agreement, after perhaps reading the internal data of storage, transmit described internal data by the described DCC passage that is replaced by the usb communication agreement to described display end,
Comprise the DDC passage in described signal transmssion line.
7. data interaction transmission system according to claim 6, it is characterized in that, described display end external data interface, comprise: at least one USB interface and/or at least one SD card slot, described display end comprises the SCALER control module, described SCALER control module reads the described external data of described SD card slot by SPI communication protocol, read the described external data of described USB interface by the usb communication agreement; The sheet of described SD card slot selects pin to be connected with the SD_CS/ serial ports of the display control chip of display end; The MOSI pin of SD card slot is connected with the SPI data of the display control chip of display end input serial ports; The MISO pin of SD card slot is connected with the SPI data of the display control chip of display end output serial ports; The SCK pin of SD card slot is connected with the SPI clock serial ports of the display control chip of display end.
8. data interaction transmission system according to claim 7, is characterized in that, it is to be undertaken by I2C communication protocol that described display end and host side are carried out DDC channel data transmission negotiation.
9. data interaction transmission system according to claim 8; it is characterized in that; described display end also for; after described host side and described display end are changed DDC tunneling traffic protocol negotiation success, the EEPROM of EDID that the display end is connected to the memory interface of DDC passage carries out write-protect.
10. according to the described data interaction transmission system of any one in claim 6-9, it is characterized in that, described signal transmssion line be in VGA, DVI, HDMI, DP, MHL signal transmssion line any.
11. a display, is characterized in that, comprising:
The display data interface, described display data interface is comprised of at least one USB interface and/or at least one SD card slot, and the sheet of described SD card slot selects pin to be connected with the SD_CS/ serial ports of the display control chip of display end; The MOSI pin of SD card slot is connected with the SPI data of the display control chip of display end input serial ports; The MISO pin of SD card slot is connected with the SPI data of the display control chip of display end output serial ports; The SCK pin of SD card slot is connected with the SPI clock serial ports of the display control chip of display end;
Described display is connected with main frame by signal transmssion line, for receiving the exchanges data instruction, carries out the transmission of DDC channel data with described main frame and consults; After reading the external data of described display data interface, by the DCC passage based on the usb communication agreement, described external data is transferred to described main frame, after perhaps receiving the internal data that described host side reads storage, by the described described internal data that is replaced by the DCC channel transfer of usb communication agreement.
12. display according to claim 11, it is characterized in that, described display also comprises: the SCALER control module, described SCALER control module reads the described external data of described SD card slot by SPI communication protocol, read the described external data of described USB interface by the usb communication agreement.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106649174A (en) * | 2016-10-11 | 2017-05-10 | 广州视睿电子科技有限公司 | USB equipment and USB communication method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101334762A (en) * | 2007-10-12 | 2008-12-31 | 硅谷数模半导体（北京）有限公司 | Data-transmission system for computer |
| US20090096713A1 (en) * | 2007-10-10 | 2009-04-16 | Samsung Electronics Co., Ltd. | Apparatus, system, and method for displaying |
| CN101593506A (en) * | 2008-05-29 | 2009-12-02 | 奇景光电股份有限公司 | Display device and communication system and data transmission method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090096713A1 (en) * | 2007-10-10 | 2009-04-16 | Samsung Electronics Co., Ltd. | Apparatus, system, and method for displaying |
| CN101334762A (en) * | 2007-10-12 | 2008-12-31 | 硅谷数模半导体（北京）有限公司 | Data-transmission system for computer |
| CN101593506A (en) * | 2008-05-29 | 2009-12-02 | 奇景光电股份有限公司 | Display device and communication system and data transmission method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106649174A (en) * | 2016-10-11 | 2017-05-10 | 广州视睿电子科技有限公司 | USB equipment and USB communication method |
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| CN103488603B (en) | 2016-08-17 |
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