Showing papers on "Serial port published in 2009"

Method and system for improving serial port memory communication latency and reliability

Abstract: A method, apparatus and system for reducing memory latency is disclosed. In one embodiment, data between a host computer system and a memory is communicated via a port or a group of ports at the memory over multiple time intervals, wherein the host computer is coupled to the memory. Further, a command associated with the data is communicated between the host computer system and the memory via the port or the group of ports over a single time interval.

Scan test application through high-speed serial input/outputs

Abstract: Methods and devices for using high-speed serial links for scan testing are disclosed. The methods can work with any scheme of scan data compression or with uncompressed scan testing. The protocol and hardware to support high speed data transfer reside on both the tester and the device under test. Control data may be transferred along with scan data or be partially generated on chip. Clock signals for testing may be generated on chip as well. In various implementations, the SerDes (Serializer/Deserializer) may be shared with other applications. The Aurora Protocol may be used to transport industry standard protocols. To compensate for effects of asynchronous operation of a conventional high-speed serial link, buffers may be used. The high-speed serial interface may use a data conversion block to drive test cores.

Virtual Serial Concentrator for Virtual Machine Out-of-Band Management

Abstract: A system and method for providing dynamic access through which I/O access such as serial ports, and thus administrators who manage servers, can see, obtain health, state or interact concurrently with multiple VMs on a given physical server. More specifically, in certain embodiments, the system and method includes a dynamic port count virtual serial concentrator coupled with a virtualization device to map emulated serial ports to virtual machines along with a remote plugin that provide dynamic concurrent serial access to many virtual machine serial consoles under a secure and collaborative friendly environment.

Graphics multi-media ic and method of its operation

Abstract: A graphics multi-media integrated circuit (GMIC) is connected to a host processor over two serial links: a half duplex bi-directional serial link which accords to a protocol defined for a display serial interface, and a uni-directional serial link which accords to a compatible protocol defined for a camera serial interface. The GMIC receives packets according to the protocol from the host over the half duplex bi-directional serial link and processes these packets. The GMIC sends packets according to the protocol to the host over the uni-directional serial link. A packet from the host can request a processing operation by the GMIC or can initiate a memory operation at the memory of the GMIC. The GMIC can also send packets to the host to initiate a memory operation at the memory of the host. The GMIC may be connected to a display over a bi-directional serial link according to the display serial interface protocol and to a camera over a uni-directional serial link and a bi-directional control link according to the camera serial interface so that the host controls the display and camera indirectly through the GMIC.

Integrated multichannel synchronous oscillation data acquiring and monitoring and analysis diagnostic device

Abstract: The invention discloses an integrated multi-channel synchronous vibration data acquisition, monitoring and analysis diagnosis device. The data acquisition unit comprises a signal conditioning circuit, an anti-aliasing filtering circuit, a multi-channel synchronous sampling chip, a system control logic unit, a pulse-shaping circuit (16), a phaselocking frequency multiplication chip and a microprocessor CPU, wherein the system control logic unit comprises a channel configuration logic unit, a clock generation logic unit, a rotating speed measurement logic unit, a sampling control logic unit and a frequency divider, and the data acquisition unit (1) is directly connected with a plurality of eddy current vibration displacement sensors, ICP type piezoelectric vibration acceleration sensors or magnetoelectric vibration speed sensors, and has an interface of a single-channel direct-connected eddy-current, photoelectric or magnetoelectric key phase/revolution speed sensor and so on. The CPU core board is connected with a computer or a palm computer through a network and a USB or a serial interface and finishes the data acquisition for monitoring and analysis diagnosis.

Secure communication port redirector

Abstract: A method and system that allows a host system application to securely communicate with a legacy device is provided. A redirector software module receives data that is destined for a host system serial COM port. Data is secured and re-directed to a legacy device via a network port instead of the serial COM port. Conversely, data destined for the host system is provided to a device server via a server COM port by the legacy serial device. The data can be encrypted and sent to the host system via the network. The redirector software module decrypts the encrypted data and presents it to the consumer application as if the data had arrived via the local COM port.

Handheld communication terminal

Abstract: This invention relates to a handheld communication terminal, which comprises a central processing unit, a communication module, a GPS module, an interphone module and a display module, wherein the central processing unit controls the work of each module respectively through a serial port; the communication module communicates with other handheld communication terminals through a mobile communication network; the GPS module searches to obtain geographical position data of the positioned handheld communication terminal and then transmits the data to the central processing unit through the serial port, and the central processing unit performs analytical processing and transmits corresponding electronic map information to the display module to display; the interphone module is communicated with other handheld communication terminals in certain range through a command center; and the central processing unit sends instructions to implement switches, and the communication module or the interphone module is used for performing communications with other handheld communication terminals.

Design and Development of a Real-Time DSP and FPGA-Based Integrated GPS-INS System for Compact and Low Power Applications

Abstract: Emphasis of the present work is on an elegant real-time solution for GPS/INS integration. Micro-electro mechanical system (MEMS) based inertial sensors are light but not accurate enough for inertial navigation system (INS) applications. An integrated INS/GPS system provides better accuracy compared with either INS or GPS, used individually. This paper describes an improved design and fabrication of a loosely coupled INS-GPS integrated system. The systems currently available use commercial off-the-shelf (COTS) hardware and are, therefore, not optimized for compact, single supply, and low power requirements. In the proposed system, a digital signal processor (DSP) is used for inertial navigation solution and Kalman filter computations. A field programmable gate array (FPGA) is used for creating an efficient interface of the GPS with the DSP. Direct serial interface of the GPS involve tedious processing overhead on the navigation processor. Therefore, a universal asynchronous receiver transmitter (UART) and dual port random axis memory (DPRAM) are created on the FPGA itself. This also reduces the total chip count, resulting in a compact system. The system is designed to give real time processed navigation solutions with an update rate of 100 Hz. All the details of this work are presented.

Message board system and method

Abstract: Provided is a messaging system that includes a highway message sign system. The message sign system includes a wireless cellular router having an Ethernet port and a serial port and being capable of communicating with a cellular wireless communication network. The message system also includes a camera coupled to the Ethernet port of the cellular router and a message sign. The message sign includes a message display and a message sign controller coupled to the serial port of the cellular router. The message sign controller is able to control operation of the message sign. Further provided is a method of operating message sign remote controller. The method includes receiving a request to communicate with a message sign system, executing an initialization file configured to initialize a communication port redirect, executing an initialization file configured to account for transmission latencies associated with use of the communication port redirect, generating a serial communication configured control operation of a message sign system, routing a serial communication from a message control application to the communication port redirect, converting the serial communication to an other communication protocol message receivable by a wireless cellular network, and routing the other communication to the message sign system via the wireless cellular network.

Monitoring device used for high voltage cable connector status in mine roadway

Abstract: The invention provides a monitoring device which is used for the high voltage cable connector status in a mine roadway, wherein, a temperature sensor, a humidity sensor and a current transformer are connected with a data acquisition unit through signal wires; the data acquisition unit, a data storage unit, a keyboard, a display unit, a clock unit and an acousto-optic warning unit are connected with a microcontroller unit through an I/O port; and the microcontroller unit is formed by the connection between a serial port and a communication unit. The invention is simple in structure, low in cost, safe and reliable in performance, and can monitor the temperature, current and humidity of the cable connector in real time, thus being applicable to the monitoring of high pressure cable connection device in the mine roadway and other high voltage electric power equipment.

Mobile-network-based system for remotely controlling turning on and turning off of home appliances by cell phone

Abstract: The invention relates to a mobile-network-based system for remotely controlling turning on and turning off of home appliances by the cell phone, belonging to the technical field of remote control; wherein, on one hand, a on-off controller controls opening and closing of electric power source of home appliances to realize turning on and turning off thereof according to serial port information, on the other hand, the on-off controller reads opening and closing state of electric power source of the home appliances and reports the state information to a control server by the serial ports; a client cell phone or a client computer operates Web browser and checks the on-off state of the home appliances by the browser and sends http format on-off control command to the control server; the control server operates a Web browser which reflects the on-off state of the home appliances read from the serial ports and receives the control command sent from the client browser and transforms and sends the command to the on-off controller. The invention dispenses with complex control components, instead, the cell phone is connected to the system control server by a wireless mobile network and the computer by the internet, thus realizing monitoring of the home appliances anytime and anywhere.

Economic multifunctional agricultural environmental information collecting device

Abstract: The utility model provides a collector, belonging to the agricultural information technical field, which comprises a microprocessor, a digital signal acquisition circuit, an analogue signal acquisition circuit, an A/D conversion circuit, a current/voltage conversion circuit, a serial port expansion circuit, a RS232/485 interface converter, a GPS module, a wireless communication module, a voice module, a USB interface circuit, a mass data memory circuit, a power supply module, a hardware reset circuit, a display module, a keyboard circuit, a parallel port circuit and an alarm circuit The collector can set acquisition parameters via messages, can collect various sensor information as image information, can transmit information via wire network or wireless network to a remote monitoring center, and can realize on-site communication The collector has low cost, high reliability, high real-time ability, portable property and simple operation, which can be used as a general information collector to collect the information of greenhouse and field

Terminal device for vehicle scheduling monitoring and working process thereof

Abstract: A terminal equipment for vehicle scheduling control and its work process relates to the field of traffic control technology. The power input terminals of the inventive intelligent control system, car global positioning system receiver, general packet radio service communication machine are respectively connected to the power output terminal of the power supply system, the data output terminal of the car global positioning system receiver is connected to the data input pin of the intelligence control system, and the flow control serial port of the general packet radio service communication machine is connected to the flow control serial port of the intelligence control system. The present invention achieves the object of fast transmission speed, wide application range and capability of providing a variety of spreading functions.

Methods and systems for combining timing signals for transmission over a serial interface

Abstract: Apparatus, systems, and methods are provided for transmitting messages over a serial interface. A method comprises receiving a first signal at a first time and receiving a second signal at a second time, the second time being after the first time. If a difference between the second time and the first time is less than a threshold time period, the method comprises generating a first message that is representative of the first signal and the second signal and transmitting the first message over the serial interface. In accordance with one embodiment, the threshold time period is equal to one half of an interface acquisition delay time period associated with the serial interface.

Method for implementing multi-function by single-terminal serial port

Abstract: A method of realizing multifunctional multiplexing on a single-end serial port comprises the following steps: constructing a plurality of logic channels corresponding to the virtual end of a personal computer end on a terminal device end and constructing the interlayer of a universal asynchronous receiver and transmitter on the device end, transmitting data of all virtual interfaces on the same physical serial port for assembling data packs with marks to differentiate the data of different virtual serial ports when in communication, constructing the interlayer of the universal asynchronous receiver and transmitter of the personal computer end for encapsulating or decoding the data packs from all logical channels, and conducting the data transmission on each virtual port, and realizing the exclusive access of components in the serial port connection mode of system physical one-end-to-many end dependent on a route chip. The method realizes the multifunctional multiplexing on a single end physical serial port channel. A software frame is designed simply, and the physical serial port of a PDA is prevented from simultaneously connecting with a serial port on a PC and other serial ports to generate physical interferences on a hardware circuit.

Security door system based on GSM technology

Abstract: The utility model relates to a GSM technology embedded anti-theft door system which is composed of a coprocessor 1 and a GSM system platform 2 mutually communicated through a serial port protocol, wherein the coprocessor comprises an MCU main control chip 17, an infrared monitor 18, a doorbell press key 3, a vibration detector 19, a doorframe magnet 21, a door body magnet 22, an RF main control chip 23, an RF identification module 24, a button type M1 card 25, an electric control lock 8, a serial port communication 26 and a download interface module 27; the GSM system platform comprises the serial port communication 26, a duplex antenna 28, a memory card 29, an SIM card 30, an SDRAM and FLASH 31, a keyboard 32, a microphone 33, a camera 10, a display screen 34 and a loudspeaker module 35 connected with the GSM system platform. The utility model has the advantages that the state of each hardware sensor can be monitored, and the direct communication with a subscriber can be realized, the intellectualization is indeed realized, and the house door security is effectively protected.

Programmable Management IO Pads for an Integrated Circuit

Abstract: A multi-port SERDES transceiver includes multiple parallel and serial ports, and the flexibility to connect any one of the parallel or serial ports to another parallel or serial port. The ports include programmable pads that are capable of supporting multiple different data protocols, timing protocols, electrical specifications, and input-output functions. A management data IO pad also enables the transceiver to support different electrical requirements and data protocols at the same time. The substrate layout of the transceiver is configured so that the parallel ports and the serial ports are on the outer perimeter. A logic core is at the center, where the logic core operates the serial and parallel data ports, and the bus that connects the data ports. The bus can be described as a “ring” structure (or donut “structure”) around the logic core, and is configured between the logic core and the data ports.

AUV intelligent fault-tolerance combined navigation simulation system based on network

Abstract: The invention provides a network-based AUV intelligent fault-tolerant integrated navigation simulation system which comprises a strap-down inertial navigation simulator, a GPS simulator, a DVL simulator, an AUV navigation terminal. A sub-navigation system is connected with the AUV navigation terminal through an IP network and transmits relevant navigation information to the AUV navigation terminal on a real-time basis, and fault detection and integrated navigation operation are finished in the AUV navigation terminal. Each sub-system has the characteristics of independent working, so that a plug-and-play AUV intelligent fault-tolerant integrated navigation simulation system is formed; the problem that the traditional navigation facility accesses to the integrated navigation terminal through an RS232 serial port and is limited to the number of serial ports is solved, thereby achieving the purpose of multiple accesses and representing a trend of equipment internet protocolization. Therefore, research cost is effectively reduced, and the invention has significant engineering application value for researching integrated navigation system and the design of communication for latter navigation system.

28.1: Distinguished Paper: A Novel Low-Power-Consumption All-Digital System-On-Glass Display with Serial Interface

Abstract: We have developed a low-power LCD panel with a serial interface by combining the technique of integration of serial data receiver function and pixel memory circuits. It has achieved a low power consumption of 15uW in a 2.26-inch format.

Method and mobile terminal for time division multiplexing serial port

Abstract: The invention relates to a method used for realizing serial port time-sharing multiplexing by a mobile terminal. The mobile terminal is provided with a flag bit for indicating the function required to be implemented by a serial port, and the serial port of the mobile terminal is connected with one or a plurality of module(s) implementing serial port driving function and one or a plurality of module(s) implementing debugging output function through a shielding switch. When a user requires to switch one module into another module, the following steps are required to be implemented: A, the flag bit is used for indicating that the serial port is required to implement another module and the shielding switch is cast to another module; and B, for switching between the serial port driving function and the debugging output function, the serial port is initialized for implementing another module. The method solves the problem of the time-sharing multiplexing of the driving function and the debugging output function on an identical serial port, and ensures the smooth switching between the serial port driving function and the debugging output function.

Method for awakening chip module

Abstract: The invention discloses a method for awaking sleep of chip modules, which adopts most common serial ports for communication among the chip modules to carry out awaking control, and sets and controls an RTS port and a CTS port of a UART serial port. Without increasing a new hardware signal port, the method can realize bidirectional sleep awaking between the two chip modules so as to save the cost and improve the efficiency.

Electromagnetic radiation measuring and analysis system

Abstract: The invention pertains to the technical field of the physical department, which relates to measuring technique of electromagnetic radiation, in particular to an electromagnetic radiation measuring and analysis system. The invention is composed of an electromagnetic radiation measuring device and a software system. The electromagnetic radiation measuring device comprises a measuring probe, two wireless communication instruments and a computer. One of the communication instruments is connected with the measuring probe through the signal conversion module. The other communication instrument is connected with the computer through a USB serial port; the software system comprises a measurement and analysis software and the data post processing software. The analysis system has the advantages of low cost, light weight, great portability, and convenient and flexible operation of equipment. The analysis system can test and monitor the existing condition of the power frequency electromagnet field for the power engineering project in operation process.

Full automatic adjustment and test system for liquid crystal display

Abstract: The invention relates to a full automatic adjustment and test system for a liquid crystal display, comprising an industry control PC, a safety test system connected to the industry control PC, a power tester, a signal generator and a burning control card, wherein the safety test system, the power tester, the signal generator and the programming control card are respectively connected to the liquid crystal display to be tested, and the system adopts the industry control PC as the core thereof, controls the safety test system, the power tester and the signal generator needed by the test by the serial port communication of the industry control PC, and realizes the functions of automatic color gradation and language selection, HDCP burning, DDC burning, DDC detection, and the like by the parallel port communication of the industry control PC and the burning control card. The system has the advantages that full automatic test and burning can be carried out during the production of the liquid crystal display, and the production efficiency and the product quality are improved.

Portable alarm configuration/update tool

Abstract: A stand-alone portable alarm update tool includes a memory interface for receiving a computer readable memory; a serial port for interconnection to a security alarm panel, by way of a complementary port; a processor; and processor readable memory in communication with the processor, storing software adapting the processor to upload and download configuration files from a removable memory received by the memory port, to the alarm panel, by way of the serial port. Conveniently, the tool may be packaged in a hand-held casing, and which may also house a battery. In this way, the tool may be readily transported by an installer, without being unnecessary heavy or bulky.

Automatic adjustment method for serial interface circuit and electronic device having serial interface circuit

Abstract: An automatic adjustment method for a serial interface circuit and an electronic device having a serial interface circuit perform automatic adjustment to optimum values of the transmitter, under any connection conditions, and without causing rule violations of the serial interface protocol. Various setting values are used in a transmitter and transmission frame retransmit instructions stipulated by the interface protocol are utilized. The frames are transmitted to a connected device using various setting values, and the results from the connected device ( 5 ) are used to adjust to the optimum transmitter values, operation specifications (conditions) of the interface protocol can be satisfied, and through retry of frame transfer the optimum values can be calculated.

Method and apparatus for upgrading set-top box software

Abstract: The invention discloses a set-top box software upgrade method and a device thereof, wherein, the software upgrade method comprises the following steps: a set-top box to be upgraded is connected with an upgraded set-top box through a serial port, the set-top box to be upgraded is taken as a server and enters the working mode of the server; the set-top box to be upgraded is electrified and started, a startup message is sent to the server through the serial port, and the set-top box to be upgraded is taken as a client and enters the working mode of a client after receiving a startup response message of the server; the server packages upgrade files into serial port data packets and transmits the serial port data packets through the serial port; the client receives the serial port data packets through the serial port and carries out the application software upgrade. The invention realizes the minimum manual intervention in the serial port upgrade in the set-top boxes and provides the simple, high-efficient and reliable serial port software upgrade.

Failure data acquisition and automatic error correction method for fast railway train

Abstract: The invention relates to a failure data acquisition and automatic error correction method for a fast railway train, including the following steps: a wireless terminal acquisition PC machine in a garage sends an acquisition order to a wireless transceiver in the train by a wireless transceiver in the garage; after receiving the order, the wireless transceiver in the train collects failure data in the train into the wireless transceiver in the train by a serial port, and then sends out well processed data; after receiving the data, the wireless transceiver in the garage restores the data into correct data and sends the correct data into the wireless terminal acquisition PC machine in the garage by a switch; and the wireless terminal acquisition PC machine outputs the result by a backend server, and transmits the data and the result into the backend server to be backed up The invention reduces the labor intensity of workers, and what is more, the invention eliminates the occurrence of random and accidental accidents, and controls the probability of accident occurrence in a controllable range

Multichannel serial communications system and control method thereof

Abstract: The invention provides a multi-channel serial port communication system and a control method thereof. The multi-channel serial port communication system comprises a control register, a main controller and a plurality of serial port receiving modules, wherein the control register is used for setting the parameter of a plurality of serial port receiving modules. The main controller is coupled with the control register and used for controlling the plurality of serial port receiving modules so as to send and receive serial data. The serial port receiving modules are respectively coupled with the main controller. The application of the multi-channel serial port communication system and the control method can carry out configuration to the serial port baud rate, stop bit and data frame stop mark through controlling the control register, and also can carry out configuration to the property of the serial port flexibly through adapting to chips and expand the number of channels according to the system resource.

Power system communication server based on WEB mass communication modes and control method thereof

Abstract: The invention relates to a power system communication server based on WEB mass communication modes and a control method thereof, comprising a CPU, a synchronous dynamic random access memory which is connected with the CPU and used for running programs and storing real time data, a memory which is connected with the CPU and used for storing data, an Ethernet module and an expanded Ethernet module which are connected with the CPU and used or network communication, a serial port module and an expanded serial port module which are connected with the CPU and used for serial communication, and a watchdog RTC Fram module which is connected with the CPU. The communication server uses WEB mode to set configuration and browse transmission data information, communicates with a master station in a serial way according to department issued CDT, national standard 101 and other power communication regulations, communicates with a dispatch master station in an Ethernet way according to department issued 104 power communication regulation, communicates with a relay protection device and various intelligent devices on a substation in an Ethernet way by RS485 and RS232, collects the data thereof and monitors the running thereof, and communicates with a substation local background in an Ethernet way according to 103 power communication regulation.

Serial interface controller supporting multiple transport protocols and control method

Abstract: The invention discloses a serial interface controller supporting multiple transport protocols, a control method and a computer supporting multiple transport protocols. The serial interface controller comprises a parameter storage unit, a variety setting unit, a bus data transport unit and a control logic processing unit, wherein the parameter storage unit is used for storing the information of control parameters of all the transfer protocols supported by the interface controller; the variety storage unit is used for setting the transport protocol variety abided by a serial interface to be controlled by the controller and generating transport protocol variety setting information; the bus data transport unit is used for transporting data between data processing equipment and the serial interface; the control logic processing unit is used for acquiring control parameter information which corresponds to the transport protocol variety setting information from the parameter storage unit according to the transport protocol variety setting information and controlling the serial interface according to the acquired control parameter information. The functions of a plurality of transport protocols following multiple transport protocols can be fulfilled by one physical serial interface.