Vehicle carried DVR present situation of technique
The vehicle carried hard disk video recorder belongs to subdividing the market of the traditional embedded hard disk video recorder, it is a piece of new developing specialized products developed as the encoding technique of the “digitalized audio, video” is employed on the vehicle. The vehicle carried hard disk video recorder has combined figures and looked at voice coding/decoding, advanced technique such as storing, car electron, wireless video network spreading, GPS satellite positioning of hard disk of large volume data of severe environment, realize that depends on to guest’s running industry, special vehicle trade and other relevant fields one the audio frequency is controlled.
A vehicle carried hard disk of the intersection of video recorder and whom producer chooses look at voice coding/decoding algorithm as follows, mainly at present MPEG-2, MPEG-4, H.264, MJPEG,etc., among them the compression ra... Read more
RenJie Yang, analyst of DIGITIMES Research, analyze leave half 2008, at the beginning of development of market of miniature projector, the miniature projector manufacturer has already described one ” The miniature projection is omnipresent ” Willing scene. However, international mobile phones and consuming large factories of electronic product all because the cost is considered, unwilling the additional cost is up to the miniature projection optical machine mobule at more than 100 dollars in its product, only a few continent owners of mountain fastness in order to reach the products difference purpose, but adopt in its mobile phone product. So, in the initial stage of development of miniature projector, the miniature projection aircraft type that the market appears still takes free-standing miniature projector as the core.
However, Yang RenJie proves, develops nearly two years, drops with the bare engine cost of the miniature projection continuously, the embedd... Read more
GPS can offer serial, high-accuracy, real time time reference, three-dimensional position, three-dimensional speed, data such as blur level,etc. in whole week, have of good performance, with high precision characteristics, therefore apply to GPS carrier phase and examine appearance, accurate guidance, SINS/ GPS integrated navigation, embedded vehicle in the military and civil field of navigating and controlling etc. extensively. And the embedded system is with its low power consumption, small volume, high stability and portable co dominant, occupy the important position in the application of GPS. This text studies the embedded microprocessor S3C2440 and WindowsCE 5 based on ARM920T kernel. 0 (abbreviate as WindowsCE) Collection and processing of military vehicles some type GPS locating information.
Hard zero-one system / software platform summary
Hardware platform structure of the vehicle GPS locating information acquisition system.
This platform can be d... Read more
By the end of 2010, the business general will have 115 valley song Android cell-phones and 50 Android apparatus that will not be the mobile phones. Whether these figures are accurate, the realistic situation is, Android begins to break through its intellectual mobile phone locked at first, begin to march to the embedded apparatuses of a plurality of trades and fields.
Why did products manager and technological person in charge all throw to this hot platform with the sight that is favored Why is Android technology such great attractive to a great deal of different markets such as medical equipment, set-box and vehicle carried information amusement system Among them there is a factor of commerce, there is a factor of technology too.
Industry’s motive force
In the technology of increasing income and authorizing under permitting, will for the cost and develops team building and bring the maximal advantage, this pair of technological manager and company high tube is ... Read more
With the technical development at full speed of science, the technology of inertial navigation applies to the military field extensively, can be accurate guidance weapon, plane, aircraft,etc.. Er early to used to and lead the system and adopt machinery platformly, spoilt and led the system (SINS) by the strapdown progressively later Replace. The modern Hi-Tech war requires the weapon system to react sensitively, easy to operate, reliability is high, expedite the emergence of the birth of the armament control system of the touch-sensitive screen, such as touch-type GPS navigator, touch-type cannon sighting system of the German army of individual soldier of the American army,etc.. It is start relatively late not to by system,but because China devices relevant (for instance: Laser gyroscope, accelerometer) Manufacturing technology getting riper in succession,used to strapdown of China last technology to last fast development too, and it is sure to accomplish to obtain. Spoil and lead... Read more
Grind and raise science and technology (AAEON Technology Inc.) Released one a few days ago and ground and raised the conceptual green embedded system of environmental protection and energy saving - -GES-3300F . This brand-new green environment protective control device (GES-3300F) Control different places of the device GES-1100F maximum to lie in the processor that the two adopt with grinding and raising first green embeddedly.
GES-3300F adopt processor, Celeron M of Intel, support 2 240- the intersection of pin DDR2 and 400/533/667 DIMM systematic memory, greatest support to 4GB. In addition, still match Intel 945GME + ICH7M chip set, to offer its efficiency of operation. Meanwhile, also include 2 ultrafast Ethernets and connect to offer faster network link and communication function. In addition, it is also furnished with the hard disk of 2.5 of interface of one SATA II, and a CF card offers the sufficient storage function.
Grind and raise the systematic products place p... Read more
China is that a piece of rivers is numerous, the floods are frequent, the scarce country of water resource. Until engineering construction, water conservancy of China, launch thoroughly, remote extra long distance to transfer water, store water, appear in succession, Off-The-Shelf not to meet demands of trade more and more because of communication means such as paired line, carrier,etc.. Security monitoring of the dam, collection, controlling of picture control, motive force information; Motive force gathering, controlling, picture control, pronunciation deployment of the pump station, gate,etc., have proposed more high requirement to the communication network.
First, information-based communication current situation of water conservancy of the present stage
With the growth day by day of the information volume of communication of flood prevention, the communication network of water conservancy is more difficult to meet demands of flood prevention data, deployment pronun... Read more
The embedded system is with its high performance, low power consumption, low-cost advantage, have already changed people’s life to a great extent. For instance, MP3 player, intellectual mobile phone, digital camera products,etc. have already penetrated all respects of people’s life. With the technical constant progress of liquid crystal display, and graphical user interface GUI (Graphical User Interface) It is employed extensively that technical, the man-machine interface is more and more friendly. It can offer ocular route figure, data parameter,etc. for motion control of the mobile robot. This text introduces one kind and is based on embedded microprocessor LPC2210, employ ZLG/GUI package of software to design the method to move machine everybody machine interface.
We design the intellectual mobile robot that develop to be that one regard PC104 embedded computer as the central processor, TMS320F2812 is a sport control device, assembling environmental perc... Read more
This text, on the basis of the nuclear 32-bit microcomputer embedded SoC&mdash in ARM7TDMI which the national specialized IC system engineering research center of Southeast China University researches and develops independently; — SEP3203 processor, adopts G.721 standard ADPCM algorithm, has realized the real-time compiled code of software of the speech signal, have offered a kind of valid embedded solution for the fact that the speech processing is employed.
1 G.721 standard summary
In 1937, A.H.Reeves proposed pulse code modulation (PCM) ,Open the course of communication of speech digitization. CCITT was at the beginning of the eighties of the 20th century, that began to be studied and is lower than 64 Kb/s is not that PCM encoded algorithms, successively made and passed code standards such as G.721, G.728, G.729,etc.. Among them, G.721 agreement regarded as the typical algorithm of ADPCM, not merely has almost the same speech quality with PCM, and there are simpl... Read more
Summary: Have realized the design of embedded RISC CPU on the basis of FPGA platform. According to the project demand, realize the instruction set as a subset of MIPS CPU instruction set, analyze the processing procedure of the order, construct data highway of 5 grades of embedded CPU. Having analyzed the associativity question that the assembly line produces, technology and software of pushing away compiled the solution combined before adopting the data. Provide the realization and designs of control unit, arithmetic unit, order Cache. Have realized and verified the design of CPU on FPGA platform.
With the development of integrated circuit design and technology, the embedded system has already been employed in intelligence terminals such as PDA, set-box, mobile phone,etc. extensively. Small, the cost is cheap, reliability high, power consumption low grade advantage that the embedded system has circuit size, it is a direction of integrated circuit development in future. And is rega... Read more
