Abstract: A head-mounted display comprises monocular or binocular display chambers. Each display chamber is equipped with an optical engine that displays images. The mechanism of the optical engine is as follows: cast rays from a light source onto an LCoS device through a first polarizer, and an image is formed with rays, which reflect off the bottom of the LCoS device. The reflective rays penetrate the first polarizer and a film-coated beam splitter. With a concave mirror, the image is magnified and projected onto the surface of the beam splitter. Finally, the magnified image is formed in a viewer's eyeballs by means of the beam splitter.

Abstract: The analyzing system of the present invention, taking electrocardiogram, pulse signals and sound voices from the outside of the body, is readily assessable and complete in function. The analyzing system of the present invention can provide physiological indexes for evaluating the functions of the heart, vocal chord, the respiration system and the autonomic nervous system. The measured signals and obtained data can be on-line analyzed or sent to computer systems for an off-line verification after the completion of the test. Through digital or wireless communications, a rapid on-line diagnosis can be achieved for mitigating potential consequences.

Abstract: A Pulse Interval to Voltage Converter (PIVC) and conversion method thereof is revealed. The PIVC comprises a clock generator, a counter, a latch, a digital-to-analog converter (DAC), a delay unit, a frequency regulator and an underflow protection unit. New components, such as the delay unit, the frequency regulator and the underflow protection unit, are incorporated into the present invention, unlike the conventional art. The delay unit is intended for the programming of the default duration of delay, so as to delay the time for the counter to reset to zero, and in consequence regulate the baseline of the output voltage. The frequency regulator can regulate the clock generation frequency of the clock generator, so as to regulate the resolution of the output voltage. The underflow protection unit turns back external signals while the delay unit is operating, so as to minimize interference from noise.

Abstract: A GPS positioner has a rescue call function by integrating a Bluetooth communication interface with the GPS positioner. Given the Bluetooth communication interface, not only may data transmission take place between the GPS positioner and a device having a Bluetooth communication interface as well, but also a rescue call may be sent through the device. The present invention enables the use of a smart phone having a Bluetooth communication interface, so that the smart phone may function as a device for seeking appropriate assistance by sending a rescue request in the form of a message or dialing.

Abstract: A cooling system for cooling an interface card is provided. The cooling system comprises a thermal conductive housing wrapping around a carrier of the interface card and the electronic devices thereon. A pair of fans are set up on the housing to provide a flow of air inside the space between the housing and the carrier so that the heat generated by the operating devices are rapidly carried away. In addition, a fin type heat sink can be incorporated into the space between the housing and the electronic devices to increase the amount of heat transferred away from the operating devices.

Abstract: A DDR and QDR converter and an interface, a motherboard and a memory module interface using the same. The DDR and QDR converter has a QDR interface, a DDR interface and a conversion core. The QDR interface is used to exchange a signal with QDR devices. The DDR interface is used to exchange a signal with DDR devices. The conversion core is used to convert QDR command and data formats into DDR command and data formats, and to convert DDR command and data formats into QDR command and data formats.

Abstract: Address converter apparatus and method to support various memory chips and an application system thereof. A flexibly programmed memory addressing circuit is used as a bridge between a control chip and a memory chip. A correct addressing method is selected according to a selected configuration value, so that the application system is not only able to use the control chip to support the memory chip, but is also able to use a new type of memory chip with multiple capacities. An optimal method is selected to partition or isolate the malfunctioning portion of the partly malfunctioning memory chip for further combination or simulation.

Abstract: An electronic recording device for storing a digital voice data encoded by a personal computer or a web server. The electronic recording device includes a docking station and an electronic tape. The digital voice data is stored in a memory in the electronic tape. A voice player reads out the stored digital voice data from a digital/analog-converting unit and a magnetic head in the electronic tape. Further, the electronic recording device is capable of radio-frequency transmitting/receiving.

Abstract: A keyboard with a numbers of keys disposed on the base is capable of showing the three-dimensional characters. Each key includes a shell and a three-dimensional character embedded in the shell. Combined with an illuminant module positioned between the base and keys for providing the light source, the three-dimensional characters can be shown clearly and distinguishably by utilizing the color contrast relation with light between the light-colored transparent three-dimensional characters and dark-colored or opaque shells.

Abstract: A method for transmitting audio and visual data over a communication means. If the bandwidth over a communication means drops below a predetermined level a video conference system can begin transmitting visual data in a QCIF format, another system receiving the data and scaling the data from the QCIF format to a CIF format. In another embodiment of the invention if the bandwidth drops below a first or second predetermined level the audio format can be altered to lower the bandwidth requirements accordingly. In a third embodiment the methods for lowering the utilized bandwidth of the audio and visual data can be used in conjunction with each other.

Abstract: A signal switch apparatus includes a signal switch component, which is connected to a interrupt controller, a high level signal, and two PCI slots. Only when the SCSI card is inserted into the first PCI slot, is the interrupt signal sent by the SCSI card transmitted to the interrupt controller through the signal switch component. When the RAID card is inserted into the first PCI slot and the SCSI card is inserted into the second PCI slot, the interrupt signal sent by the SCSI card is transmitted to the RAID card through the signal switch component.

Abstract: A memory command converter and its application system. The memory command converter serves as a command translator between an extended data output dynamic random access memory (EDO DRAM) and a synchronous dynamic random access memory (SDRAM) so that an application system for using EDO DRAM may also use mainstream SDRAM through the converter.

Abstract: An integrated apparatus for thermal dissipation suitable for the thermal dissipation of the display chip and the memory chip on a display card. It comprises a baseboard, which contains the first side and the second side. The sets of first and second fins are located on the first side in which the first set is perpendicular to the first side and the second set forms an angle other than 90 degrees with the first side. The second side is in contact with both the display chip and the memory chip. A board hook is located on one side of baseboard that clamps on the edge of the display card. As well as, a fan is located on the first side between the sets of first and second fins.

Abstract: An SDR and DDR conversion device and associated interface cards, motherboards and memory module interfaces. The SDR and DDR conversion device includes a DDR interface device, an SDR interface device and a core conversion device. The DDR interface device exchanges signals with the DDR device while the SDR interface device exchanges signals with the SDR device. The core conversion device converts DDR instructions and data into SDR instructions and data and vice versa.

Abstract: A SDR and QDR converter and an interface, a motherboard and a memory module interface using the same. The converter of SDR and QDR has a QDR interface, a SDR interface and a conversion core. The QDR interface is used to exchange a signal with QDR devices. The SDR interface is used to exchange a signal with SDR devices. The conversion core is used to convert QDR command and data formats into SDR command and data formats, and to convert SDR command and data formats into QDR command and data formats.

Abstract: A power generator for a Digital Cassette Cartridge, which is put into a cassette player for playing back the digital audio files stored in the Digital Cassette Cartridge. The cassette player contains a reel shaft for driving the power generator of the Digital Cassette Cartridge. The power generator includes two gears, a magnetic object, a coil and a power supply. The first gear is coaxially engaged with the reel shafts. The second gear rotates as the first gear rotates. The magnetic object is coaxially mounted and is conjointly rotatable with the second gear. The coil produces an alternating current source when the magnetic object rotates. The power supply receives the alternating current and converts the alternating current to a direct current source.

Abstract: A video communicating equipment that receives digital image data and a clock signal as input, generating analogue image data internally and then outputting the analogue image data to a computer screen. The video communicating equipment comprises a line buffer, a complex programming logic device and a digital-to-analogue converter. Using only a normal telephone network and an ordinary computer screen, the video communication equipment of this invention enables both voice and video communication functions. Furthermore, the computer screen can be selected to output either computer images or video communication images.