9280 results about "Low power dissipation" patented technology

The present invention provides methods, devices, and systems for wireless physiological sensor patches and systems which incorporate these patches. The systems and methods utilize a structure where the processing is distributed asymmetrically on the two or more types of ASIC chips that are designed to work together. The invention also relates to systems comprising two or more ASIC chips designed for use in physiological sensing wherein the ASIC chips are designed to work together to achieve high wireless link reliability/security, low power dissipation, compactness, low cost and support a variety of sensors for sensing various physiological parameters.

A wireless medical signal processing system for health monitoring is disclosed which achieves high wireless link reliability/security, low power dissipation, compactness, low cost and supports a variety of sensors for various physiological parameters. The system includes a medical signal processor which communicates with a wireless distributed sensor system as its peripheral for detecting physiological parameters of the person and for providing signals indicative thereof. The medical signal processor wirelessly receives the signals from the distributed wireless sensor system in a multiplexed fashion and processes the signals to provide an indication of the health of the person. The indication of health could relate to a disease state, general health or fitness level of a person. The system also includes a mobile device for receiving the indication of the health of the person to allow for a diagnosis or treatment of the person.

The invention comprises use of Dynamically Switchable Bypass (DSB) elements in association with one or more Light Emitting Diodes (LEDs) in arrays for illumination circuits to provide rugged, reliable lighting. The DSBs are selected from Transient Voltage Suppressors, including Silicon, Metal Oxide Varistors, and Multi Layer Varistors as well as Zener Diodes. The DSBs are not used as circuit protecting devices, but rather as alternative paths for electric current to bypass failed LEDs. Bi-directional TVSs are used as alternative electric paths for circuits using Alternating Current (AC) and parallel LED arrays that light on both phases of AC. Zener Diodes are used in parallel to, but in the opposite polarity orientation to, one or more LEDs in DC or rectified AC circuits. The inventive paired DSB/LED elements overcomes the black-out problems of prior series LED illumination systems, making possible the use of robust LEDs in illumination systems where reliability, long life, low power consumption, low heat output, resistance to shock, vibration, and humidity, and self-diagnosis are important. The DSB elements have breakdown voltages slightly higher than the LED(s) they support, so that when an LED fails, the conduction through the DSB begins. Because the conduction voltage of the DSB so nearly matches the conduction voltage of the LED(s), the remainder of the circuit continues to function as normal. The system is self-diagnostic in that any LED failure presents itself as a dark LED rather than as a whole string of dark LEDs. DSBs may be used with incandescent bulbs.

A receiver arranged to receive and store broadcast data transported by elementary stream of a multiplexed and modulated digital television signal in a rewritable memory during a low power consumption mode for later recall by a user of the receiver. For recall, the receiver is fully energized, and the receiver is further arranged to transfer the broadcast data stored in the rewritable memory to a receiver storage device for further processing of the data under control of the user.

Devices and methods of detecting a predetermined audio signal in audio signals are provided. A device includes a processor coupled to a clock signal generator, a power controller and an audio detector. The power controller controls a clock rate provided to the processor by the clock signal generator, to control the device to operate in a low power mode having a relatively low power consumption or in a normal power mode having a relatively high power consumption. The audio detector receives audio signals and detects, in the low power mode, probable presence of a predetermined audio signal in the audio signals. The power controller controls the device to switch from the low power mode to the normal power mode responsive to the detected presence of the predetermined audio signal by the audio detector.

A hardware virtual machine instruction processor directly executes virtual machine instructions that are processor architecture independent. The hardware processor has high performance; is low cost; and exhibits low power consumption. The hardware processor is well suited for portable applications. These applications include, for example, an Internet chip for network appliances, a cellular telephone processor, other telecommunications integrated circuits, or other low-power, low-cost applications such as embedded processors, and portable devices.

The present invention provides method and system for data communication in the human body and a sensor therefor. The method and system transmit information through the human body to a receiver located outside the human body using low current and voltage polarity, so that they cause no damage to the human body and achieve low power consumption and better receiving sensitivity. In addition, the sensor contains a CMOS image sensor on which all circuits are integrated without radio transmitter and antenna, so that it achieves a low-priced and small-sized capsule type endoscope.

A Match-Detection Circuit and Match-Detection method, for low-power-consuming searches in a Content Addressable Memory. A HIT is output when the Match Line rises from a Low voltage level to a higher Match Detection Voltage. The Match Detection Voltage is approximately the conducting threshold voltage of an N-channel Field Effect Transistor (FET), and is normally less than One Half of the Power Supply Voltage. Circuits and methods to turn of the through-current in each MISS-ing entry by a carefully timed control signal at the end of a brief Match Detection Period, are disclosed.

Wireless communication apparatus capable of increasing transmission efficiency by selecting data for scheduling according to data type, and capable of achieving low power consumption and high-speed signal processing is disclosed. With this apparatus, a control section (108) allocates transmission data sequence 1 to subcarriers of superior quality by carrying out scheduling for the transmission data sequence 1 based on CQI sent from communication terminal apparatus and required transmission rate information for each communication terminal apparatus, and allocates transmission data sequence 2 to preassigned subcarriers. Channel allocation section (115) allocates data for transmission data sequence 1 to subcarriers designated by control section (108). Channel allocation section (116) allocates data for transmission data sequence 2 to subcarriers designated by control section (108).

The invention provides a low-power consumption display device. The display device 10 is provided with a plurality of pixels P₁₁˜P_nm arranged in a matrix formed by columns and rows, and a plurality of signal lines 16-1˜16-m arranged corresponding to every pixel rows or pixel columns. The display device further comprises a signal voltage generating part 12 electrically connected to the plurality of pixels P₁₁˜P_nm via the plurality of signal lines 16-1˜16-m and generating signal voltages which are applied to the plurality of signal lines 16-1˜16-m, and a signal voltage amplifying part 14 amplifying the signal voltage generated by the signal voltage generating part 12 to a necessary drive voltage for each of the plurality of pixels P₁₁˜P_nm.

The present invention provides a large format fingerprint capture apparatus, system and method that is low power, compact, and lightweight and has a platen area greater than 3.0 square inches. The present system is typically powered, controlled, and exchanges data over a single data/control/power connection to a host PC, e.g., a desk top computer, PDA, or laptop computer although the system can also be used in a wireless fashion with a power subsystem so no physical connections are required. In a preferred embodiment the large format fingerprint device is directly connected to a completely disconnected portable PC, such as a laptop having only a battery power source. The primary system components of the present invention combine to minimize power, size and weight and, thus, enhance portability and battery life. The system typically includes a light source, a prism, a camera (including the lens), and a case. Optional elements comprise holographic elements such as gratings and holographic optical elements (HOEs), a battery subsystem, magnetic stripe reader, barcode reader, platen heater, platen blower, and mirrors to divert the image beam.

A silicon-on-insulator (SOI) electrostatic discharge (ESD) protection device that can protect very sensitive thin gate oxides by limiting the power dissipation during the ESD event, which is best achieved by reducing the voltage drop across the active (protection) device during an ESD event. In one embodiment, the invention provides very low triggering and holding voltages. Furthermore, the SOI protection device of the present invention has low impedance and low power dissipation characteristics that reduce voltage build-up, and accordingly, enable designers to fabricate more area efficient protection device.

A method for selecting an adjustment for at least one drive voltage used to drive an OLED display to reduce power consumption including operating the display to produce a calibration curve which depicts the drive voltage versus current or luminance, and selecting the adjustment for the drive voltage based upon the calibration curve so as to reduce the power consumed by the OLED display while maintaining desired luminance throughout the lifetime of the OLED display.

A silicon-on-insulator (SOI) electrostatic discharge (ESD) protection device that can protect very sensitive thin gate oxides by limiting the power dissipation during the ESD event, which is best achieved by reducing the voltage drop across the active (protection) device during an ESD event. In one embodiment, the invention provides very low triggering and holding voltages. Furthermore, the SOI protection device of the present invention has low impedance and low power dissipation characteristics that reduce voltage build-up, and accordingly, enable designers to fabricate more area efficient protection device

A unit operator cell includes a plurality of SOI (Silicon on Insulator) transistors, write data is stored in a body region of at least two SOI transistors, and the storage SOI transistors are connected in series with each other to a read port or each of the storage SOI transistors is singly connected to the read port. Therefore, an AND operation result or a NOT operation result of data stored in the unit operator cells can be obtained, and operation processing can be performed only by writing and reading data. A semiconductor signal processing device that can perform logic operation processing and arithmetic operation processing at high speed is implemented with low power consumption and a small occupation area.

A radio frequency (RF) transmitter has a plurality of digitally controlled phased array antennas coupled to and controlled by the processor to transmit data. The processor is to enable one or more antennas to be turned off during a use of the apparatus to reduce a power consumption of the apparatus.

A low power media player is provided for an electronic device, such as a hand-held portable computer having capability to operate an application during a low power mode. During the low power mode, portions of hardware, software, services, and/or other components of the portable computer that are not necessary to the operation of the low power media player are suspended or otherwise deactivated. Rather than repeatedly accessing a hard disk to read media files for playback, the low power media player limits its number of access operations by reading as many media files as possible during each access operation, and then caching the read media files. When playback of the media files is to be performed, the media files are read from the cache, thereby reducing the amount of power consumption attributable to hard disk access operations.