61 results about "PS/2 port" patented technology

An ethernet converter enables computers with an ethernet connection to connect to a network on a two-wire system. The converter comprises a device installed behind a wall plate that employs an RJ11 port. The converter may comprise indicator lights, which notifies the user of the status of the converter. The converter may comprise a cable for connecting the computer to the device, and for connecting the device to a power source, which may be a USB port or a PS / 2 port of the computer, or an AC / DC adapter connected to an AC power source.

A wireless peripheral and control method for supporting legacy keyboard inputting. The wireless peripheral includes a wireless interface device (like a wireless keyboard) and a corresponding wireless receiving dongle. The dongle can be selectively connected to a wired input port (like a PS / 2 port) or a universal connection port (like a USB port) of a host of the computer system, and the dongle has a firmware advanced control module for decoding signals of the wireless interface device to signals formatted for the wired input port. When the wireless peripheral is used for BIOS setting of the host, the dongle is connected to the wired input port, thus the advanced control module can be enabled to support a legacy input functionality of the computer system.

The invention discloses a home gateway which can realize the remote control and management of various household devices which are commonly used. The home gateway mainly comprises a microcontroller core unit, and an internal network interface and an external network interface which are separately connected with the microcontroller core unit, wherein the internal network interface comprises an RS-232 serial interface, an RS-485 serial interface, a USB serial interface, a PS / 2 interface, an Ethernet interface, an infrared interface and a common I / O port; and the external network interface comprises an Ethernet interface which can be connected with the Internet and a wireless interface of a GPRS network. The different interfaces of the internal network can be used to connected with various common household devices, the interfaces of the external network are used to connected with remote control devices, and different remote control devices, namely the computer or cell phone can be selected according to demands to realize the remote control of any household device conveniently and quickly in real time. The home gateway has simple structure and convenient and fast operation, and can be widely used in the remote control and management of household devices.

The invention provides a computer system and a peripheral equipment drive method; and the computer system comprises a processor which operates in a switch way among various power statuses, wherein a universal serial bus joint can be connected with a universal serial bus interface device to receive a universal serial bus input signal. A PS / 2 conversion interface is coupled with the universal serial bus joint and converts the universal serial bus input signal into a PS / 2 protocol signal. A system chip is provided with a PS / 2 port which is coupled with the PS / 2 conversion interface and can be used for receiving the PS / 2 protocol signal to execute the function of the universal serial bus interface device. The system and the method can lead a user to maintain the use habit of the original USB interface device and can lead the whole mobile device to be more power-saving, thus increasing the use time of a battery.

The invention relates to a multi-keyboard input system, multi-keyboard input equipment, a multi-keyboard input switching device and a control method. The multi-keyboard input switching device comprises a keyboard interface, a host PS / 2 interface, a programmable logic device and a microcontroller; and the microcontroller is used for scanning input information in real time, receiving the scanned input information, receiving the input information sent by external PS / 2 keyboards, decoding the input information of external matrix keyboards, and sending the input information sent by the external PS / 2 keyboards and the decoded input information of the external matrix keyboards to an external host through the programmable logic device. The multi-keyboard input switching device solves the problem that a plurality of standard PS / 2 keyboards and matrix keyboards are simultaneously connected to the host, and has simple structure, maintenance convenience and high cost performance; a main board andan operating system which can be compatible with the standard PS / 2 keyboards can directly use the multi-keyboard input equipment and the multi-keyboard input switching device without loading any drive; and the multi-keyboard input equipment and the multi-keyboard input switching device have small volume and good reliability, and are convenient to install.

The invention discloses a coder interface testing device based on a Nios II processor. The device comprises an FPGA (Field Programmable Gate Array) chip, an incremental TTL (Transistor Transistor Logic) interface module, an incremental sine and cosine interface module, an absolute interface module, a display screen and a PS (Poly Styrene) / 2 interface device, wherein the incremental TTL interface module, an incremental sine and cosine interface module, an absolute interface module, a display screen and a PS / 2 (Purple Green) interface device are connected with the FPGA chip; the incremental TTL interface module is used for being connected with the coder of an incremental TTL interface type, the incremental sine and cosine interface module is used for being connected with the coder of an incremental sine and cosine interface type, the absolute interface module is used for being connected with an absolute coder so that a serial digital signal output by the absolute interface module is transformed between a differential signal and a single-end signal, and the FPGA chip comprises a Nios II processor embedded in a chip, and the Nios II processor is used for processing an input signal and realizing the testing of coder interfaces. The Nios II processor-based coder interface testing device can be used for solving the problems that the coder interfaces in the existing coder testing platform can not be mutually compatible and are inconveniently carried, and has the characteristics of low cost, strong function, small volume, compact structure and high integration.

A modem interface device is coupled to a computer such that the device is powered via a power signal received from a bus port of the computer, such as a Universal Serial Bus (USB) port, a RS-232 port, or a PS-2 port. The modem interface device has a telephone base connector, a modem connector, a power connector, a two-to-four-wire converter circuit, and a power distribution circuit. The two-to-four-wire converter circuit bidirectionally couples signals between the telephone base connector and the modem connector. The power distribution circuit receives electrical power from the power connector and supplies power to the two-to-four-wire converter circuit.

The invention discloses a method for testing a PS / 2 interface, which comprises the following steps: connecting a test module with the PS / 2 interface and a USB interface of a tested host computer; starting the test module and the tested host computer and initializing the USB interface equipment and PS / 2 interface equipment of the tested host computer; allowing the tested host computer to send a command to the test module through the USB interface to require the test module to simulate the action of the PS / 2 interface equipment; making the test module simulate a PS / 2 protocol according to the command sent by the tested host computer and send a corresponding PS / 2 signal to the PS / 2 interface of the tested host computer; and allowing the tested host computer to receive the corresponding PS / 2 signal through the PS / 2 interface to judge if the communication of the PS / 2 interface is normal. The method can replace the traditional manual test method and improve test efficiency and precision.

Reporting an attribute of a device via PS / 2 protocols to a host executing an industry standard PS / 2 port driver that does not include explicitly recognize the attribute. For example, a wireless mouse reports a battery state and a signal quality state through a standard PS / 2 port driver that does not recognize any command or identifier for battery state or signal quality state. The attribute state is encoded in a standard PS / 2 data packet. The standard PS / 2 data packet is uniquely identified as an attribute packet by encoding data corresponding to highly unlikely mouse movement. A filter driver running on the host activates transmission of the attribute packets by commanding the port driver to issue a unique sequence of standard PS / 2 commands, which the mouse system recognizes. The filter driver intercepts incoming PS / 2 data packets, recognizes the unlikely data values that identify an attribute packet, and decodes the attribute state.

The invention discloses a wireless mouse device without a battery. The wireless mouse device comprises a wireless mouse body and a mouse pad. A shell of the wireless mouse body comprises a USB (universal serial bus) or PS (play station) / 2 interface, a roller, touch keys, a PCB (printed circuit board), an optical lens and a power device; in the power device inside the wireless mouse body, a magnet is mounted at the tail of the mouse body, a coil is mounted between the roller and the magnet, two ends of the coil are respectively connected to alternating-current input ends of a diode rectifier bridge, direct-current output ends of the diode rectifier bridge are respectively connected to two input ends Vin and GND of a voltage stabilizer after being connected with an energy-storage capacitor in parallel, and an output end and an input end GND of the voltage stabilizer and a filter capacitor are connected in parallel and then are used as a mouse voltage source; and closed coils which are arrayed and are distributed equidistantly are arranged in the mouse pad, and the closed coils are wound in a single-loop manner. The wireless mouse device solves the problem that a battery of the traditional wireless mouse needs to be frequently detached and installed, and hazards caused by dry batteries to environments are relieved.

The invention provides a device for wired and wireless switch, a mouse, a keyboard, a gamepad and a steering wheel. The device comprises a communication interface, a wireless transceiver module connected with the communication interface and a storage battery for providing power. The communication interface comprises a PS / 2 interface, a USB interface and an IEEE394 interface. The wireless transceiver module comprises an infrared communication module, a laser communication module and a bluetooth communication module. The device has beneficial effects of converting a signal transmitted on a wiredline into the signal transmitted on a wireless line, thus saving wiring and improving freedom of using products. Especially, the device switches into wireless connection and then completely meets requirement of users for disposing the product when the environmental localization affects normal use of wiring.

The invention relates to testing equipment with multiple testing ports and a testing method thereof. The testing equipment comprises a device to be tested and with an application program for product function testing, a micro-control unit platform, a universal sequence bus interface, a first video graphics array interface and a PS / 2 interface, wherein the universal sequence bus interface, the firstvideo graphics array interface and the PS / 2 interface are used for communicating the device to be tested with the micro-control unit platform. A testing signal sent by the application program for product function testing is transmitted to the micro-control unit platform to detect, and then a detection result of the micro-control unit platform is returned to the application program for product function testing.

A wireless communication between a mouse and a keyboard connected to a computer with a cable provides a means for connecting mouse signals to a computer. Transceivers located in both the mouse and the keyboard provide RF communications that are converted by the keyboard transceiver to electrical signals to be coupled to the computer through USB or PS / 2 ports. An integration of a key scan function with a keyboard transceiver reduces the number of semiconductor chips required in the keyboard.

The invention discloses a PS / 2 keyboard and mouse simulator, relates to the field of computers and solves the problem that a PS / 2 interface is limited in application when distance between a computer and a control console is long or operating space is limited due to the fact that PS / 2 signal transmission distance is limited. The PS / 2 keyboard mouse simulator is composed of an RS232 signal input interface, a PS / 2 keyboard signal simulating and processing unit, a PS / 2 mouse signal simulating and processing unit, a PS / 2 keyboard signal output interface and a PS / 2 mouse signal output interface. The PS / 2 keyboard and mouse simulator is easy in wiring and long in transmission distance, the computer can be ensured to still be capable of being correctly started without being connected with a real PS / 2 keyboard and a PS / 2 mouse; the RS232 signal input interface is adopted, so that the PS / 2 keyboard and mouse simulator has no mutual conflict with the keyboard and the mouse with which the computer is connected externally.

The invention provides a switching device and a multi-computer switch. The switching device is used for connecting a host computer with a computer peripheral device and comprises a PS / 2 connecting port and a controller, wherein the PS / 2 connecting port is used for coupling the computer peripheral device; the computer peripheral device is provided with a PS / 2 interface; the controller is used for electrically connecting the computer peripheral device through the PS / 2 connecting port and comprises an identification unit; the identification unit is used for receiving a peripheral control signal of the computer peripheral device and identifying the type of the computer peripheral device according to the peripheral control signal; and the controller is used for arranging a path from the signal sent by the computer peripheral device to the host computer according the type of the computer peripheral device. The switching device can be applied to the multi-computer switch, and can automatically identify the type of the peripheral device with the PS / 2 interface.

The invention relates to a key control system of a Doppler ultrasonic diagnosis instrument. The key control system is connected with a color ultrasonograph host computer, and comprises a single-chip computer control module, a key module, a TGC (time grain compensation) module, a light-emitting diode (LED) display module and a sound generating module. The key control system has the characteristics that: an LED intelligent display chip is used for controlling the display of a backlight lamp, therefore the overall brightness adjustment of the backlight lamp can be realized and on / off of each LED can be controlled separately; single-chip computer control is adopted to achieve the synchronization technology of the state indication lamp in the key and the host computer state, and working mode and adjusting mode indication lamps are used to achieve better human-computer interaction; and by adopting PS / 2 interface to connect with a computer, the external connection of other keys are avoided in the setting process of basic input output system (BIOS), and the installation and maintenance become more convenient and rapider.

The invention relates to a checking device of PS / 2 interface and relative method, wherein said checking device comprises one single-chip micro processor, one PS / 2 interface terminal and several LED instruct lamps; the single-chip micro processor is connected to the data end and clock end of PS / 2 interface; said LED instruct lamp is connected to the micro processor, to simulate the function of keyboard instruct lamp; and said checking method comprises: using the instruction preset at micro processor to simulate hand-operated key to send second keyboard scan code, and use keyboard controller to translate it into first scan code; then judging if they are relative. The invention can replace hand-operated key press operation to save cost and time.

The invention relates to the technical field of security, in particular to an asymmetric algorithm-based keyboard encryption system and keyboard encryption method. The keyboard encryption system comprises a keyboard, an encryptor, a client and a server, wherein the keyboard is used for inputting keyboard codes; the encryptor is used for encryption; the client is used for logging in a user system;and the server is used for performing decryption and determining whether a user can log in the user system or not. The encryptor encrypts source text codes based on an asymmetric algorithm to obtain aciphertext, and sends the ciphertext to the server; the server performs decryption and determines whether the user can log in the user system or not; the encryptor is a universal independently usableencryption apparatus; the input end of the encryptor is connected with the keyboard through a USB port or a PS / 2 port; the output end of the encryptor is connected with a client machine of the client; and an existing general keyboard can be encrypted after being connected with the client machine through the encryptor, so that the universality is high.

The invention relates to a CAN bus communication monitoring analyzer, which comprises a power supply module, a single chip, a small keyboard, an LCD, a CAN bus interface, a PS / 2 interface and an RS232 interface. The monitoring analyzer is connected with a monitored CAN network through the CAN bus interface and used for analyzing the problem of the CAN network during communication; working parameters of the monitoring analyzer can be set through the small keyboard so that the monitoring analyzer is matched with different CAN networks; the LCD can display the information mutually transmitted between different nodes in the network in real time; and a universal computer keyboard externally connected at the PS / 2 interface can conveniently realize edition of various commands or data and send the various commands or the data to the network so as to fulfill the purposes that the monitoring analyzer simulates a specific node and sends the data to the CAN network.

A keyboard microphone set and its additional device are featured as connecting keyboard with microphone to external additional device by PS / 2 interface which uses redundance plug pin and plug hole and increases core number of wire, then connecting external additional device to computer PS / 2 keyboard interface and input plug hole of microphone and connecting internal additional device to microphone signal wire through PS / 2 keyboard interface of computer host board.

The invention discloses an FPGA-based onboard system realization method. The method comprises the steps of S1, establishing a processor module, wherein the processor module comprises a controller anda data path; S2, establishing an FPGA device module, wherein the FPGA device module comprises a PS / 2 interface, an RS232 interface, a VGA interface, a 7-section LED display screen, an LED display screen, a Switch, a Button, an on-chip ROM, a bus interface and IO control logic; S3, establishing an onboard memory module, wherein the onboard memory module comprises a VRAM and a memory; and S4, combining circuits of the processor module, the FPGA device module and the memory module into a stream file, and programming the stream file in an FPGA. The method has the advantages in two aspects that therealization efficiency is high: hardware resources provided by the FPGA are rich, and designed computer system hardware can be quickly realized on the FPGA, so that the realization efficiency is higher; and the flexibility is high: the FPGA is reconfigurable, so that when partial hardware parameters of the computer system hardware are changed, reconfiguration can be performed during operation, namely, the computer system hardware realized through the FPGA is more flexible.

The invention discloses a circuit and a method for multiplexing universal serial bus (USB) and PS / 2 interfaces on a computer. The circuit comprises a complex programmable logic device (CPLD) control chip U2, a two-way switch chip U1, a dial switch K1, a PS / 2 controller U3, a USB controller U4 and a four-pin aviation plug interface U5, wherein the PS / 2 controller U3 and the USB controller U4 are connected with input ends S0 and S1 of the two-way switch chip U1; the dial switch K1 is connected into the input ends of the two-way switch chip U1 via the CPLD control chip U2; and an output end of the two-way switch chip U1 is connected with the four-pin aviation plug interface U5. When the dial switch is at one side, the aviation plug interface is connected with a USB signal line, and a USB device can be connected; and when the dial switch is at the other side, the aviation plug interface is connected with a PS / 2 signal line, and a PS / 2 device can be connected. Therefore, the four-pin aviation plug interface led to the outside is achieved, the function of time-shared connection of the USB or PS / 2 device is fulfilled, machine space is saved, design cost is saved, and the method is practical and effective.

The invention discloses a simulating device of a PS / 2 keyboard, and relates to a replacing device capable of simulating a command and information and making a corresponding response, wherein the command and the information are transmitted by a reading host computer of the PS / 2 keyboard. The simulating device comprises an integrated chip, a crystal oscillator and relevant circuits. The simulating device is characterized in that the integrated chip and the host computer are mainly operated by the following steps of: receiving data and a command which are transmitted by the host computer and making a response; and if the command is received, explaining the command and sending the response data of the command to a response buffer zone. Although the host computer using the device has no the PS / 2 keyboard, a Windows NT system still loads a driver of the PS / 2 keyboard, a scanning gun can be installed on the host computer to accomplish transmission of bar code information to the host computer.

The invention discloses a keyboard interface switching device which is connected with a keyboard interface, and comprises a data selection module, a signal broadening module, a control module and a channel switching module; and the device solves the problems that hot plug is not supported by a PS / 2 interface, and two circuits respectively provided with the PS / 2 interfaces can not be used on one PS / 2 interface at the same time.

The invention relates to a method for realizing programmable special keyboard, wherein the invention uses PS / 2 standard interface of common computer, without changing the driving program of system, to code and decode data via self-defined communication protocol, to realize the data communication between computer and special keyboard; and user can edit self-defined keyboard information in the upper edit software, to process it into the data allowed by host operation system, to be downloaded into the flash of keyboard via the PS / 2 standard interface, to program keyboard information and online upgrade new program; at the same time, the present key information of keyboard via PS / 2 interface can be transmitted and displayed in superior edit interface of computer to realize bidirectional interaction, and improve the reliability and stability of system communication.

The status signal SLP_S3#, SLP_S5# of the computer main board through the vacant end of the keyboard interface are leaded to the keyboard. Based on the status of the computer, the keyboard control circuit set different key code. The keyboard interface is PS / 2 interface. The status signal SLP_S3#, SLP_S5# of the computer main board through the pin 2 end and the pin 6 end are leaded to the keyboard. By using the status of computer as the relevant condition, the invented keyboard can send different key code automatically so as to expand applications of computers.

The invention discloses a PS / 2 keyboard dual-computer plug-in system of an LPC bus interface, which is characterized by comprising an internal host CPU, an FPGA controller, a PS / 2 keyboard and an external computer PS / 2 interface; the internal host CPU is connected with the FPGA controller through an LPC protocol bus, the FPGA controller is connected with the PS / 2 keyboard, and the FPGA controlleris connected with the external computer PS / 2 interface; the FPGA controller comprises an LPC time sequence module, an LPC serial interrupt module, an FIFO module, a PS / 2 sending module, a PS / 2 receiving module and a PS / 2 watchdog module. The invention has the advantages and beneficial effects that the problem that the PS2 keyboard is shared between the host of the LPC bus and the host of the universal PS2 interface can be effectively solved, and dual-computer sharing switching of the PS2 keyboard with different interfaces can be met.

The invention discloses a method for connecting a PS / 2 keyboard with a portable terminal. The method includes the following steps that a processor of the portable terminal initializes the PS / 2 keyboard; a universal asynchronous receiver / transmitter (UART) interface of the portable terminal receives keyboard data sent by the PS / 2 keyboard through a receiving URX terminal of the UART interface, wherein the UART interface of the portable terminal is connected with a PS / 2 interface of the PS / 2 keyboard. A UTX terminal and the URX terminal are connected with a clock signal terminal and a data transceiving terminal of the PS / 2 interface respectively.

The invention discloses a card reader compatible to contact and noncontact IC (integrated circuit) cards. The card reader comprises a master control chip, a safety module, a voltage stabilizing power supply chip, a USB (universal serial bus) interface, an analog front end chip and a noncontact intelligent IC read-write chip. A contact card seat is connected with a master control chip through the analog front end chip; a buzzer and three indicator lights are connected with the master control chip through I / O interfaces; three PSAM card seats are extended from the safety module, an LCD (liquid crystal display) screen and a code keyboard are externally connected with the master control chip through a PS / 2 interface, and the noncontact intelligent IC read-write chip is connected with the master control chip through a serial peripheral interface; the USB interface supplies power to the master control chip through the voltage stabilizing power supply chip. The card reader in USB communication is a drive-free plug-and-play card reader and quick and convenient to use and can be externally connected with the liquid crystal display screen and the code keyboard to achieve convenience in use.