314results about How to "Low power consumption" patented technology

A DRAM capacitor uses ruthenium or ruthenium oxide as an upper electrode and hafnium dioxide or zirconium oxide as an insulation layer. The DRAM capacitor is intended to suppress diffusion of ruthenium, etc. into hafnium dioxide. Tantalum pentoxide or niobium oxide having a higher permittivity than that of the insulation layer is inserted as a cap insulation layer to the boundary between the upper electrode of ruthenium or ruthenium oxide and the insulation layer of hafnium dioxide or zirconium oxide to thereby suppress diffusion of ruthenium, etc. into hafnium dioxide, etc.

A memory device comprising a first pan-shaped electrode having a side wall with a top side, a second pan-shaped electrode having a side wall with a top side and an insulating wall between the first side wall and the second side wall. The insulating wall has a thickness between the first and second side walls near the respective top sides. A bridge of memory material crosses the insulating wall, and defines an inter-electrode path between the first and second electrodes across the insulating wall. An array of such memory cells is provided. The bridges of memory material have sub-lithographic dimensions.

A storage system including a storage device 1 which includes: media 50 for storing data from a host computer 2; a medium controller 14 for controlling the media; a plurality of channel controllers 11 for connecting to the host computer 2 through a channel; and a cache memory 13 for temporarily storing data from the host computer 2, wherein the media 50 have a restriction on a number of writing times. The storage device 1 includes a bus 123 for directly transferring data from the medium controller 14 to the channel controller 11.

A nonvolatile semiconductor device which can be driven at low voltage is provided. A nonvolatile semiconductor device with low power consumption is provided. A Schmitt trigger NAND circuit and a Schmitt trigger inverter are included. Data is held in a period when the supply of power supply voltage is continued, and a potential corresponding to the data is stored at a node electrically connected to a capacitor before a period when the supply of power supply voltage is stopped. By utilizing a change in channel resistance of a transistor whose gate is connected to the node, the data is restored in response to the restart of the supply of power supply voltage.

Systems, methods, and apparatuses are provided for spectrum-sensing cognitive radios that are operative to detect and utilize available RF spectrum resources. The spectrum-sensing cognitive radios include at least one antenna and a frequency-agile radio front-end module in communication with the at least one antenna and configured to transmit and receive radio frequency signals via the at least one antenna. In addition, a spectrum-sensing module, which may include one or both of coarse-sensing and fine-sensing modules, may be in communication with the at least one antenna and be configured to generate RF spectrum usage information. A medium access control (MAC) module is operative to receive the RF spectrum usage information from the spectrum-sensing module. Based upon the received RF spectrum usage information, the MAC module is operative to direct a frequency of operation of the radio front-end module based at least in part on the received spectrum usage information.

Spatial subchannel codes for wireless devices operating in a cooperative antenna array are generated using an asymptotically optimal decoding algorithm, such as a trellis-exploration algorithm similar to the Viterbi algorithm. A trellis may be constructed using a number of desired subchannels, at least one code length, and a number of code-chip parameters. A fitness function is derived from a mathematical relationship between codes, and may include some measure of correlation of the codes. The selected codes correspond to paths having optimal path metrics derived from the fitness function. Multiple iterations through the trellis may be performed to refine a selection of the codes.

A low-power lock apparatus includes a drive motor connected to a finite power supply, the drive motor including a shaft and a predetermined number of windings, and a threaded rod axially connected to the shaft, the rod having a predetermined thread pitch. The shaft can drive a deadbolt or, alternatively, it can drive an escapement pin into a strike disposed in the deadbolt and substantially transverse to the movement path thereof In either embodiment a wireless transceiver and antenna disposed within the lock assembly controls the drive motor in response to wireless signals, as from a transceiver incorporated within a wireless low-frequency access card. The number of windings and/or the thread pitch are selected to maximize a life of the finite power supply.

An electronic implantable device with a power saving circuit incorporates a radio frequency receiver with low power consumption. A high power radio receiver is normally turned off during a period of inactivity. When an analyzer detects a predetermined identification code in a received radio frequency signal, it outputs a signal to turn on the high power receiver.

A variety of sensors, such as mechanical triggers, light sensors and motion sensors, magnetic sensors, and radio frequency identification tags, are strategically placed throughout a motor vehicle to detect service and maintenance activities relating to the vehicle during the lifetime of the vehicle. A sensed activity then activates a suitable recording device, such as a video recorder, to record the activity. The completion of the activity likewise is sensed and causes deactivation of the recording device. The recorded activity is typically retained in a non-erasable, indexed storage device from which it can be easily retrieved. The sensors may also be used for tamper detection and vehicle motion detection.

A lighting system, a reflector, light sources and a light control member are sequentially disposed from a light incident side to a light outgoing side. Preferably used for large displays requiring high uniformity, this invention eliminates lamp image and removes the necessity to do light source repositioning, while enabling luminance in the exit plane to achieve excellent luminosity and uniformity. This invention achieves total transmittance of more than 50% when light is incident on the normal direction of the incident plane at a predetermined angle α and achieves 1.05-3 times more total transmittance than when the light is normally incident. This is achieved by using a light control member such as the light diffusion plate described herein, which is conformed to obtain required luminosity and uniformity by controlling the ratio between total transmittance in the positions of greater transmittance and the total transmittance in the positions of lesser transmittance.

A method is provided for automatically determining the use status of an electronic medical device (e.g., an electronic stethoscope) and/or activating such a device. The method includes providing a patient portion of the device, i.e., one or more portions of the device that, in use, are brought into contact with a patient, with a contact or proximity detector. The detector provides an output signal when the patient portion is proximate to, or in contact with, a portion of a patient. This output signal, after signal processing, is used in determining the use status of the device.

An object is to provide a display device with low power consumption and good display quality. A first substrate is provided with a terminal portion, a pixel electrode, a switching transistor including an oxide semiconductor, a first optical sensor having high optical sensitivity to visible light, and a second optical sensor having optical sensitivity to infrared light and having lower optical sensitivity to visible light than the first optical sensor. The illuminance or color temperature around a display device is detected using the first and second optical sensors, and the luminance or color tone of a display image is adjusted. A second substrate is provided so as to face the first substrate, and is provided with a counter electrode. In a period for displaying a still image, the switching transistor is turned off so that the counter electrode is brought into a floating state.

A pupil position and convergence detection system for an ophthalmic lens comprising an electronic system is described herein. The pupil position and convergence detection system is part of an electronic system incorporated into the ophthalmic lens. The electronic system includes one or more batteries or other power sources, power management circuitry, one or more sensors, clock generation circuitry, control algorithms and circuitry, and lens driver circuitry. The pupil position and convergence detection system is utilized to determine pupil position and use this information to control various aspects of the ophthalmic lens.

The present invention belongs to the field of an image capturing apparatus such as a camera for mobile phone and the like, and has an object to obtain a three axis lens shifting mechanism capable of achieving size reduction and cost reduction with simple structure and an image capturing apparatus equipped with such three axis lens shifting mechanism. A single magnetic circuit exerts an influence of a magnetic field produced by magnets (20) upon active sides of a focusing coil (14) and active sides of coils (10a), (10b). Therefore, movable parts (11+17) can be driven in the direction of optical axis (Z) only by controlling the direction of energizing the focusing coil (14), and further, a first movable part (11) can be driven in a first direction (X) or second direction (direction of rotation) (Y) only by combination of the directions of energizing the coils (10a), (10b). This allows the sharing of the magnetic circuit and an electromagnetic actuator.

There are provided a tactile stimulation device that is suitable for portable apparatuses by meeting all requirements such as miniaturization, low power consumption, low noises, prompt response time and sufficient physical force, and an apparatus using the same. The tactile stimulation device may be useful to provide a sufficient level of physical stimuli by arranging a plurality of linear ultrasonic actuators to move linearly in a vertical direction to any of skin contact surfaces and stimulating the skin in a vertical direction under the control of the linear movement of the linear ultrasonic actuators.

The present relates to a node to be integrated in a network of wirelessly connected nodes, to a network system, to method for operating a node of a network, and to a method for communicating within a network. A method is disclosed for communicating within a network of cooperatively synchronized nodes, configured to broadcast data packets to the network during broadcast phases through a flooding mechanism, each data packet comprising hop data. The method comprises, for each broadcast phase, broadcasting a data packet from a source node during a predetermined time slot; and receiving the data packet at one or more destination node during said predetermined time slot. The broadcasting and receiving are repeated according to the hop data, at respective predetermined time slots, wherein each destination node corresponds to a source node in a next execution of broadcasting and the data packet received corresponds substantially to the data packet to be broadcasted in the next repetition.

A semiconductor circuit capable of controlling and holding the threshold voltage of a transistor at an optimal level and a driving method thereof are disclosed. A storage device, a display device, or an electronic device including the semiconductor circuit is also provided. The semiconductor circuit comprises a diode and a first capacitor provided in a node to which a transistor to be controlled is connected through its back gate. This structure allows the application of desired voltage to the back gate so that the threshold voltage of the transistor is controlled at an optimal level and can be held for a long time. A second capacitor connected in parallel with the diode is optionally provided so that the voltage of the node can be changed temporarily.

There is provided a radio communication system capable of distinguishing objects from one another while taking advantage of the low power consumption and distance measurement ability of the radio communication of the UWB method. A radio tag TGn includes: a characteristic impedance unit (3) for generating a response signal by using a pulse signal received from a broad-band antenna (1); a transmission path (2) having a predetermined length, transmitting the pulse signal received by the broad-band antenna (1) from the broad-band antenna (1) to the characteristic impedance unit (3), and transmitting the generated response signal from the characteristic impedance unit (3) to the broad-band antenna (1); and the broad-band antenna (1) for receiving the pulse signal and transmitting the response signal. The aforementioned pulse wave is transmitted to the radio tag TGn by the UWB method. The response signal from the radio tag TGn is received and the radio tag TGn is identified from the reception waveform.

A method of detecting a receiver (214) by a transmitter and a transmitter for detecting a receiver are provided. The transmitter is intended to transmit power inductively to the receiver (214). The transmitter comprising a first transmission coil as a first electrode (204) and a second electrode (206). The first electrode (204) and the second electrode (206) form a capacitor (202). The method comprises the steps of applying a voltage (216) to any one of the electrodes (204, 206) and detecting a capacitance change of the capacitor (202).

The present invention provides a device and methods of use thereof for desalting a solution. The methods, inter-alia, make use of a device comprising microchannels, which are linked to conduits, whereby induction of an electric field in the conduit results in the formation of a space charge layer within the microchannel. The space charge layer provides an energy barrier for salt ions and generates an ion depletion zone proximal to the linkage region between the microchannel and the conduit. The method thus enables the removal of salt ions from the region proximal to the conduit and their accumulation in a region distant from the conduit, within the microchannel.

This specification discloses a non-volatile static random access memory (SRAM) cell with the feature of keeping data even after the power is turned off. It includes a static random access unit and a non-volatile memory unit. Therefore, it has the random access property of the SRAM normally. After the power is turned off, it can store data in the non-volatile memory unit, so that the data can be automatically restored to the static random access unit from the non-volatile memory unit when the power is turned on.

An illumination device is provided which includes: an illumination light source that emits an illumination light; a first position-detecting light source that emits a first position detecting light; a second position-detecting light source that emits a second position detecting light; a first light guide plate which is provided with a first light incident surface that introduces the illumination light and the first position detecting light to an inside thereof and a first light emitting surface that is disposed to cross the first light incident surface while being disposed to be adjacent thereto and that emits therefrom the illumination light and the first position detecting light propagating through the inside; and a second light guide plate which is provided with a second light incident surface that is disposed to overlap with the first light guide plate in plan view and that introduces the second position detecting light to an inside thereof and a second light emitting surface that is disposed to cross the second light incident surface while being disposed to be adjacent thereto and that emits therefrom the second position detecting light propagating through the inside concurrently with the first position detecting light.

Under a multi-cell radio communication environment where connection between cells or TDMA frame synchronization is not established, a mobile station carries out an adjacent cell search under low power consumption. Adjacent cell information acquired through search by the mobile station is managed centered on a base station and may be provided by the base station as adjacent cell information, when the mobile station carries out the adjacent cell search. The adjacent cell information includes, for example, a TDMA frame offset between cells so that the mobile station receives a broadcast channel of the adjacent cell at appropriate timing based on the adjacent cell information and therefore does not need to perform unnecessary reception operation in the event of a handoff.

A pattern projection system includes a coherent light source, a repositionable DOE disposed to receive coherent light from said coherent light source and disposed to output at least one pattern of projectable light onto a scene to be imaged by an (x,y) two-dimensional optical acquisition system. Coherent light speckle artifacts in the projected pattern are reduced by rapidly controllably repositioning the DOE or the entire pattern projection system. Different projectable patterns are selected from a set of M patterns that are related to each other by a translation and/or rotation operation in two-dimensional cosine space. A resultant (x,y,z) depth map has improved quality and robustness due to projection of the selected patterns. Three-dimensional (x,y,z) depth data obtained from two-dimensional imaged data including despeckling is higher quality data than if projected patterns without despeckling were used.

Disclosed herein are a mobile robot system to restrict a traveling region of a robot and to guide the robot to another region, and a method of controlling the same. Only when a remote controller reception module of a beacon senses a signal transmitted from a mobile robot, the sensed result is reported to the mobile robot in the form of a response signal. In addition, the Field-of-View (FOV) of the remote control reception module is restricted by a directivity receiver. Only when the signal transmitted from the mobile robot is sensed within the restricted FOV, the sensed result is reported to the mobile robot.

The present invention relates to an apparatus and a corresponding method demapping a demapping input data stream (Q′) having a channel bandwidth received in a multi-carrier broadcast system into a demapping output data stream (Sy′). The demapping input data stream (Q′) comprises, alternately arranged, one or more first and one or more second frames (F1, F2) having different frame structures. In an embodiment a stream demapping means (132) is provided for demapping said second frames from said demapping input data stream (Q′), and a frame demapping means (134) is provided for demapping said second frames (F2) comprising a preamble portion (40) and a payload portion (50) into said demapping output data stream (Sy′), wherein said frame demapping means (134) is adapted for demapping the signalling data (Si) from the preamble portion (40), which comprises at least one preamble symbol (41) carrying at least one preamble signalling block including signalling data, and for demapping the data blocks of said demapping output data stream (Sy′) from the payload portion (50) by use of said signalling information (Si), wherein payload data are mapped onto the payload portion (50) comprising a plurality of data symbols (52) carrying payload data of at least two mapping input data streams (S1, S2, . . . , Sp), said payload portion (50) being segmented into data segments (51) each covering a bandwidth portion of said channel bandwidth.

A method and system for advanced media access control delegated from a host device, such as a WiFi device, to a smart wireless communications module. In an embodiment, the host signals to the wireless module a list of one or more preferred networks. The wireless module offloads from the host the processing required to scan for the preferred network(s), as well as possibly other management tasks. The wireless communications module may automatically reassign the network connection from an existing network to a preferred network, or may report to the host when a preferred network is discovered. In either case, the wireless communications module may monitor the wireless environment, and scan for preferred networks, in parallel with maintaining an existing connection. The method and system allows rapid adaptation to a changing network environment, and enables lower system power consumption by distributing management functions between the host and the lower-powered wireless communications module.

An organometallic complex according to the present invention comprises a structure represented by the following general formula (1). In the formula, R¹ to R⁵ are any one selected from the group consisting of hydrogen, a halogen element, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a cyano group, and a heterocyclic group, Ar is an aryl group having an electron-withdrawing group or a heterocyclic group having electron-drawing group, and M is an element of Group 9 or an element of Group 10.

An optical transceiver includes a substrate having first and second sides. A light emitter mounted to the first side. A light receiver is mounted to the first side and comprises a dielectric totally internally reflecting concentrator directing light to a photodetector. Amplification circuits are mounted to the second side and are electrically connected to the light emitter and the light receiver through the substrate. The light emitter and the light receiver are housed in separate molded housings. A DTIRC is used to provide a good link distance and a wide field of view.

A device with micromachined (a.k.a. MEMS, Micro Electro Mechanical Systems) silicon sensor to measure gas or liquid concentration in a binary mixture formality is disclosed in the present invention. A process for fabricating the said MEMS silicon concentration sensor, which thereby can greatly reduce the sensor fabrication cost by a batch production, is revealed as well. This MEMS process can mass-produce the sensors on silicon substrate in the ways of small size, low power, and high reliability. In addition to the gas or liquid concentration measurement, the present invention further discloses that the said sensor can also readily measure gas or liquid mass flow rate while record the concentration data, which is not viable by other related working principle.