CN101232614A - Wireless image transmitting instrument and data processing method thereof - Google Patents
Wireless image transmitting instrument and data processing method thereof Download PDFInfo
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- CN101232614A CN101232614A CN 200710009636 CN200710009636A CN101232614A CN 101232614 A CN101232614 A CN 101232614A CN 200710009636 CN200710009636 CN 200710009636 CN 200710009636 A CN200710009636 A CN 200710009636A CN 101232614 A CN101232614 A CN 101232614A
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Abstract
The invention wireless video transmitter and relevant data process method relates to a video signal transmission device and relevant data process method. The core of the wireless video transmitter is a video processor with a universal data storage, which stores image data received by a Wi-Fi wireless network adapter; a read-only storage, which stores video data de-compression processes and interpretation procedures of all press-key functions; a high-speed buffer storage, which stores intermediate data during the course of the video data process; a key pad comprising a plurality of function press-keys; a Wi-Fi wireless network adapter and antenna, which receives high-resolution video image data that a portable PC picks up in an identical period and passes compression process through the Wi-Fi wireless mode transmission; and a video output adapter, which is connected with a projector or a large-screen display device. The invention resolves the problems that, when portable PCs are necessary to transmit high-resolution video image data to a projector or a large-screen display device through cable wires, a lot of trouble might be caused in connection and disconnection of the cable wires.
Description
Technical field
The present invention relates to a kind ofly be connected with projecting apparatus or large-screen display equipment by cable, and the video signal transmission equipment that is connected with hand-held computer by the Wi-Fi wireless mode.
Background technology
In various modern meeting-place and large-scale classroom, the lectuer is in order fully to show preprepared subject matter data, often needs to use earlier cable that hand-held computer and projecting apparatus or large-screen display equipment are coupled together; In the process of lecture, portable computer expert crosses projecting apparatus or large-screen display equipment is play these data Yi Bian operate, Yi Bian explain orally.After finishing, lecture removes cable.If there are several lectuers to give a lecture continuously or alternately, connect and remove the continuity of the serious interference of the process meeting meeting of cable.Many existing hand-held computers have the function of wireless communication, subsidiary Wi-Fi wireless network card and antenna, and transmission range can reach 100 meters.But the common about 11Mbps of Bit Transmission Rate of Wi-Fi technology far is not enough to transmit 1024 * 768 pixel high-resolution video image data of hand-held computer.Therefore, people use cable so far always, and do not consider to use the Wi-Fi wireless communication function of hand-held computer to remove to connect projecting apparatus or large-screen display equipment.
Summary of the invention
The present invention aims to provide and a kind ofly is connected with projecting apparatus or large-screen display equipment by cable, and is connected with hand-held computer by the Wi-Fi wireless mode, can transmit the wireless image transmitting instrument and the data processing method thereof of high resolution video image data.
Technical scheme of the present invention is: wireless image transmitting instrument is a core with the video processor, is furnished with: conventional data memory, the view data that storage Wi-Fi wireless network card receives; Read-only memory, stored video data decompression and each keypress function interpretive program; Cache memory, the intermediate data in the stored video data processing procedure; The keyboard of forming by a plurality of function buttons; Wi-Fi wireless network card and antenna, receive hand-held computer by the Wi-Fi wireless mode transmit through uniformly-spaced grasping and compressing the high resolution video image data of handling; Video output interface connects projecting apparatus or large-screen display equipment.
In the enforcement structure of optimizing: described video processor is furnished with USB interface or card reader interface and audio output interface, the broadcast of directly audio, video data on USB flash disk or the storage card being decoded.
The data processing method of above-mentioned wireless image transmitting instrument, the step that comprises has:
Steps A, hand-held computer uniformly-spaced grasps the high resolution video image data that desire sends, and reduces the frame number of high-definition picture in the unit interval;
Step B, the temporary high resolution image data that has grasped of hand-held computer;
Step C, hand-held computer are that unit extracts temporary high resolution image data and compresses and encode with the frame;
Step D, the high resolution image data frame that hand-held computer will compress and encode outwards sends by Wi-Fi wireless network card and antenna;
Step e, the antenna of wireless image transmitting instrument and Wi-Fi wireless network card receive the high resolution image data frame that compresses and encode of hand-held computer transmission and pass to video processor;
Step F, the high resolution image data frame that the video processor of wireless image transmitting instrument will compress and encode deposits the conventional data memory in;
Step G, the video processor of wireless image transmitting instrument extract from the conventional data memory that a frame has compressed and the high resolution image data of encoding decompresses and decodes, the high resolution video image frame data that obtain reducing;
Step H, projecting apparatus or large-screen display equipment that the video processor of wireless image transmitting instrument hands over video output interface to connect the high resolution video image frame data of reduction are play.
Wireless image transmitting instrument of the present invention utilizes the WI-FI wireless network card, method by the WI-FI wireless transmission receives and is stored on hand-held computer or other wireless devices through uniformly-spaced grasping and compressing the high resolution video image data of handling, passes through after decompression and the decoding processing to deliver on projecting apparatus or the large-screen display equipment in the mode of wired connection to show.Owing in large-scale meeting-place or classroom, need only use cable directly to be connected a wireless image transmitting instrument with projecting apparatus or large-screen display equipment, and each speechmaker's hand-held computer or other high-resolution video equipment do not need to use cable directly to be connected with projecting apparatus or large-screen display equipment, not only can save the troublesome operation that cable connects and removes, keep the continuity of meeting; But also can change traditional speech form, and each speechmaker does not leave seat separately, just can show own ready data on large-screen at large-screen display equipment or by projecting apparatus, carries out debate and discussion, and the effect of meeting is significantly improved.Again because this wireless image transmitting instrument can be with through uniformly-spaced grasping and compressing the high resolution video image data of handling and carry out decompression and decoding processing, the high-resolution video data can display on large-screen at large-screen display equipment or by projecting apparatus with the form of similar cartoon, can satisfy the requirement of various specialized conferences and teaching and solve the low and problem that adopts the wireless transmitting-receiving equipments cost of high transfer rate more to increase substantially of WI-FI technical transmission speed.This wireless image transmitting instrument is equipped with USB2.0 interface, card reader and audio output interface, other lectuer who does not use hand-held computer or other wireless devices also can be directly played back oneself USB flash disk or the decoding of the audio, video data on the storage card, show.This wireless image transmitting instrument total weight is light, volume has only hand size, is convenient for carrying and uses.If change keyboard into infrared receiver, also available remote controller operation.The data processing method of wireless image transmitting instrument of the present invention is simple and brief, be provided in high resolution video image is uniformly-spaced grasped, compresses handling and the program of encoding process can be made general program module of hand-held computer or other wireless devices, be convenient to install and transplant.
Description of drawings
Fig. 1 is the circuit box structure schematic diagram of an embodiment of wireless image transmitting instrument of the present invention.
Fig. 2 is the schematic diagram of Fig. 1 embodiment occupation mode.
Fig. 3 transmits the flow chart of data processing figure of high resolution video image data to Fig. 1 embodiment for hand-held computer.
Embodiment
Circuit box structure of optimizing embodiment of wireless image transmitting instrument of the present invention, as shown in Figure 1.The core of this wireless image transmitting instrument is a video processor 10, is furnished with around video processor 10: two groups of conventional data memories 11, read-only memory 12, cache memory 13, Wi-Fi wireless network card 14 and antennas, keyboard 15, usb 16, card reader interface 17, the YPbPr component vide output interface 18 be made up of a plurality of function buttons and the audio output interface 19 that has amplifier 191.
The AML7228 video frequency processing chip that video processor 10 adopts AMLOGIC company to provide.This video frequency processing chip inside is provided with core CPU unit, SDRAM1/2 controller unit, card reading unit, streaming media processing unit, RealVideo, MPEG 1/2/4, HVD Video decoder element, JPEG/M-JPEG decoder element, video post-processing unit, audio decoder unit, audio frequency post-processing unit; Can decode and decompress various audio/video bitstreams.1 USB port connects Wi-Fi wireless network card 14 in each I/O port that this video frequency processing chip externally provides, 1 USB port connects usb 16, the Card Reader port connects SD/MMC/MS/XD four unification card reader interfaces 17,1 component vide output port connects the amplifier 191 that 18,1 audio output ports of YPbPr component vide output interface connect audio output interface 19.
Two groups of conventional data memories 11 all adopt the SDRAM of 2M * 16Bit.
Read-only memory 12 adopts rewritable EEPEROM.
Fig. 2 shows the occupation mode of present embodiment.Be stored in high resolution video image on hand-held computer or other wireless devices through uniformly-spaced grasping and compressing processing, become data flow and be sent to present embodiment by the Wi-Fi wireless mode.The above-mentioned data flow that present embodiment will receive through decompression and decoding processing after, deliver on projecting apparatus or the large-screen display equipment in the mode of wired connection and to show.Concrete data handling procedure, please referring to Fig. 3:
Step 100, hand-held computer uniformly-spaced grasps by per second 10 frames the high resolution video image data that desire sends, and obtains the frame data of high-definition picture.
Because in the present embodiment, video processor 10 is furnished with usb 16 and SD/MMC/MS/XD four unification card reader interface 17 and audio output interfaces 19, for the voice data on USB flash disk or the storage card, the core CPU unit of the video processor 10 of wireless image transmitting instrument can be according to the control of read-only memory 12 inner control programs, transfer the audio buffer of keeping in the second conventional data memory 11 after streaming media processing unit decompresses voice data, audio decoder for the back is converted to audio signal, amplifies back output by audio output interface 19 and plays.If change the position of keyboard among Fig. 1 15 into the connection infrared receiver, then present embodiment can be operated with infrared remote controller.
Because the video frequency processing chip of the video processor 10 of present embodiment can be decoded to RealVideo, MPEG1/2/4, JPEG, Motion JPEG (M-JPEG) and HVD Video, so it can play various video frequency programs and image.For example, the core CPU unit of video processor 10 is according to the control of function button on the keyboard 15, carry out corresponding control programs in the read-only memory 12, the card reading unit of video processor 10 is obtained video frequency program or view data by card reader interface 17 from SD card or mmc card or XD card or MS card; Perhaps video processor 10 obtains video frequency program or view data by usb 16 from USB flash disk; Giving streaming media processing unit decompresses and decoding processing accordingly, if the video frequency program or the view data of MPEG1/2/4 form or HVD form, above-mentioned result is given RealVideo, MPEG 1/2/4, HVD Video decoder element carries out the decoding of MPEG1/2/4 form or the decoding of HVD high definition film; If JPEG (
*.jpg) and M-JPEG (
*.avi) video frequency program or the view data of the file format that these digital cameras are commonly used, above-mentioned result is given the JPEG/M-JPEG decoder element and is decoded.The above-mentioned decoder of video processor 10 is sent into the video post-processing module after with data decode and is shown to handle and produce final output and give projecting apparatus or the large-screen display equipment that YPbPr component vide output interface 18 connects and play.The video post-processing unit of video processor 10 is supported AV, S-Video, various interfaces such as YUV, VGA and SCART, can satisfy the input requirement of various display devices.The streaming media processing unit of video processor 10 is given the voice data in the video frequency program after audio decoder unit decoding is converted to audio signal, offer the audio frequency post-processing unit and carry out the audio/video synchronization processing, amplify back output by audio output interface 19 then and play.
The above only is preferred embodiment of the present invention, does not limit scope of the invention process with this, and the equivalence of doing according to technical scheme of the present invention and description changes and modification, all should belong to the scope that the present invention is contained.
Claims (3)
1. wireless image transmitting instrument is a core with the video processor, is furnished with:
The conventional data memory, the view data that storage Wi-Fi wireless network card receives;
Read-only memory, stored video data decompression and each keypress function interpretive program;
Cache memory, the intermediate data in the stored video data processing procedure;
The keyboard of forming by a plurality of function buttons;
Wi-Fi wireless network card and antenna, receive hand-held computer by the Wi-Fi wireless mode transmit through uniformly-spaced grasping and compressing the high resolution video image data of handling;
Video output interface connects projecting apparatus or large-screen display equipment.
2. wireless image transmitting instrument according to claim 1 is characterized in that: described video processor is furnished with USB interface or card reader interface and audio output interface, the broadcast of directly audio, video data on USB flash disk or the storage card being decoded.
3. the data processing method of claim 1 or 2 described wireless image transmitting instruments, the step that comprises has:
Steps A, hand-held computer uniformly-spaced grasps the high resolution video image data that desire sends, and reduces the frame number of high-definition picture in the unit interval;
Step B, the temporary high resolution image data that has grasped of hand-held computer;
Step C, hand-held computer are that unit extracts temporary high resolution image data and compresses and encode with the frame;
Step D, the high resolution image data frame that hand-held computer will compress and encode outwards sends by Wi-Fi wireless network card and antenna;
Step e, the antenna of wireless image transmitting instrument and Wi-Fi wireless network card receive the high resolution image data frame that compresses and encode of hand-held computer transmission and pass to video processor;
Step F, the high resolution image data frame that the video processor of wireless image transmitting instrument will compress and encode deposits the conventional data memory in;
Step G, the video processor of wireless image transmitting instrument extract from the conventional data memory that a frame has compressed and the high resolution image data of encoding decompresses and decodes, the high resolution video image frame data that obtain reducing;
Step H, projecting apparatus or large-screen display equipment that the video processor of wireless image transmitting instrument hands over video output interface to connect the high resolution video image frame data of reduction are play.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710009636 CN101232614A (en) | 2007-09-30 | 2007-09-30 | Wireless image transmitting instrument and data processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710009636 CN101232614A (en) | 2007-09-30 | 2007-09-30 | Wireless image transmitting instrument and data processing method thereof |
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| CN101232614A true CN101232614A (en) | 2008-07-30 |
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| CN 200710009636 Pending CN101232614A (en) | 2007-09-30 | 2007-09-30 | Wireless image transmitting instrument and data processing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497388A (en) * | 2011-11-11 | 2012-06-13 | 青岛海信移动通信技术股份有限公司 | Mobile network terminal and method for wireless screen content transmission between such terminal and TV |
| CN102740032A (en) * | 2012-06-08 | 2012-10-17 | 深圳市亿思达显示科技有限公司 | Split projection system |
| CN112449165A (en) * | 2020-11-10 | 2021-03-05 | 维沃移动通信有限公司 | Projection method and device and electronic equipment |
-
2007
- 2007-09-30 CN CN 200710009636 patent/CN101232614A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497388A (en) * | 2011-11-11 | 2012-06-13 | 青岛海信移动通信技术股份有限公司 | Mobile network terminal and method for wireless screen content transmission between such terminal and TV |
| CN102740032A (en) * | 2012-06-08 | 2012-10-17 | 深圳市亿思达显示科技有限公司 | Split projection system |
| CN112449165A (en) * | 2020-11-10 | 2021-03-05 | 维沃移动通信有限公司 | Projection method and device and electronic equipment |
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Open date: 20080730 |