132 results about "Sequential switching" patented technology

Gate switches can switch an amount of attenuation, and are set in a distributed manner on distribution lines and a trunk on subscribers' house side in a CATV transmission path having a tree structure with an optical node that follows a headend being taken as a starting point. An upstream-transmission-quality monitoring unit monitors an S/N ratio of an upstream signal obtained from an upstream port having the headend connected thereto to detect a decrease in upstream transmission quality based on a degree of decrease and a continuation state of an S/N ratio. When the upstream-transmission-quality monitoring unit detects a decrease in upstream transmission quality, a noise-generation-source searching unit performs a sequential switching control over the amount of attenuation at the gate switches provided on the CATV transmission path from upstream to downstream to search for a source of generation of upstream ingress noise.

Circuitry for and method of power efficient operation of, and energy recovery from, tissue-stimulating electrodes having high charge capacities. Post-stimulation energy is recovered from the electrodes through a variety of techniques into circuit elements such as other electrodes, an intermediate distribution system, a power supply or any other elements, through the use of sequential switching. Energy is also recoverable from the intermediate distribution system, which preferably is comprised of one or more storage capacitors operating a different voltages. Efficient power transfer among circuit elements is effected by transferring energy while limiting element-element voltage differences and/or voltage differences between the elements and the capacitances of the electrodes.

To provide an image processing apparatus that can reduce power consumption as compared to a conventional case by energizing required minimum devices at an appropriate timing depending on contents of a request received from an external apparatus through a communicating medium during a power-saving state, if a device information processing request is received from the external apparatus through a NIC during a sleep mode, an MPU of the NIC and an MPU of each controlling unit control automatic changeover switches based on contents of the device information processing request and the state of the own apparatus to control energization of each function block. When switching the function blocks from a “non-energized state” to an “energized state”, a hierarchical energization controlling process is performed to switch the functional blocks with hierarchical relationships to the “energized state” in the hierarchical order from higher to lower blocks.

A driver circuit 10 is described for driving loads such as LED, OLED or LASER diode devices L. A switching converter 12 has a switching element M1 and reactive elements L1, C1 to provide an output switching voltage V1 by sequential switching operations of the switching element M1. The load L is connected to the output switching voltage. A linear current driver circuit 14 is connected in series to the load L and comprises an amplification element Q1 and a feedback circuit R1, 22 with a current control input V_{L, set}, I_B. In order to enable the circuit to be easily used, a control unit 16, 116, 216 is provided with a sensing input V_{L, 1}, V_{L, 2} for a current or voltage at the linear current driver 14. A microcontroller 30, 130, 230 executes a control program for processing the sensing input and providing both a current control output V_{L, set}, I_B and a switching control output V_{L, set} in accordance with a set current value I_set.

A switching mechanism provides sequential switching of first and second circuit breakers to enable switching between a primary power supply and a backup power supply. The switching mechanism comprises a first actuator plate to operate a first circuit breaker connected to a primary power supply, a second actuator plate to operate a second circuit breaker connected to a secondary power supply, and an actuator. The first and second actuator plates are independently movable between on and off positions. The actuator is operatively connected to the first and second actuator plates so that the actuator moves the first actuator plate to an on position and the second actuator plate to an off position when the actuator is moved in a first direction, and moves the first actuator plate to an off position and the second actuator plate to an on position when the actuator is moved in a second direction. An override enables movement of the first and second actuator plates from the on position to the off position when the other actuator plate is in the off position. The switching mechanism can be installed in an existing distribution panel in a home of building.

A digital temperature sensor and a system and a method for measuring a temperature are provided. The system includes a reference signal generator including one or more resistance elements; a temperature sensor including a plurality of discrete resistance elements arranged parallel with one another; a multiplexer multiplexing the plurality of discrete resistance elements and the reference resistance element so that the plurality of discrete resistance elements sequentially distribute a power voltage together with the reference resistance element; a comparator having the voltages distributed by the reference resistance element and a discrete resistance element selected by the multiplexer; and a counter counting sequential switchings of the multiplexer. The counter information of the output level transit time of the comparator is provided to the controller, and the system obtains temperature information according to temperature change information from turn information of the discrete resistance elements according to the counter information.

To provide a radar device capable of improving azimuth estimation accuracy by compensating the Doppler phase shift of a moving target in a TDMA FMCW MIMO radar device. Provided is a radar device that allows transmitting antennas to perform transmission by performing sequential switching such that antenna element numbers are anterior-posterior symmetrical centering on a reference time and synthesizes a beat signal at the reference time from a first beat signal received by a receiving antenna before the reference time and a second beat signal received after the reference time.

The invention discloses a computer input device and a method adopting the computer input device to control the switching of three-dimensional windows, which are used for using a mouse to directly control the switching of a plurality of three-dimensional windows while executing the Vista operation system. The computer input device comprises two parts, namely, a mouse and a firmware which is internally arranged in a control chip of the mouse and actuated in virtue of the control chip. After detecting that a left key or a right key of the mouse is pressed, and simultaneously, a page-turning control module is operated, the firmware generates a window switching signal unit to call for the switching function of the three-dimensional window of the Vista operation system and finally lead the page-turning control module to perform the function of sequentially switching windows. Therefore, the operation to one mouse by one hand can call for the functions of three-dimensional windows and can carry out the sequential switching of windows without the operation to the keyboard and mouse by two hands.

A driver circuit (1) for operating at least one load, such as a LED unit (7) is provided, comprising an input (2) for receiving an input voltage (V IN ) from a power supply (6), an output (3) for providing an output voltage (V OUT ) to said load and a switching converter (4) with at least a storage inductor (11) connected with a switching device (13), said switching converter (4) being disposed to generate an average output current by sequential switching operation of said switching device (13) between at least a charging mode and a discharging mode. Furthermore, a switching controller (5) is connected with said switching device (13) to control the switching operation of said switching device (13) and comprises a feedback inductor (24), inductively coupled to said storage inductor (11) to provide a feedback voltage, corresponding to the variation of an inductor current (I S ) through said storage inductor (11) and a voltage compensation circuit (25), connected with said feedback inductor (24) to determine at least one compensation signal from said feedback voltage, said compensation signal corresponding to said input voltage (V IN ) or said output voltage (V OUT ). To provide a cost-efficient and versatile driver circuit (1), the switching controller (5) is configured to at least control said switching device (13) between said discharging and said charging mode in dependence on said inductor current (I s ) and to control a duty cycle of the switching operation in dependence on said at least one compensation signal, so that in case of a variation of said input (V IN ) or output voltage (V OUT ), said average output current, provided to the load, is maintained substantially constant.

An image capturing apparatus comprises a unit which accepts a switching operation of switching a display mode, a display switching unit which switches, in response to the switching operation, to a next display mode in a predetermined order from a plurality of display modes including a first display mode wherein a live view image is displayed on a display unit, a second display mode, different from the first mode, wherein a live view image is displayed, and a third display mode wherein no live view image is displayed, a unit which accepts a shooting preparation instruction, and a unit which controls, upon accepting the shooting preparation instruction when the display mode is the third display mode, to switch the display mode from the third display mode to the second display mode.

A novel sequential switching waveguide switch includes an upper casing and the like; the upper casing is fixed at the upper portion of a driving stator group, the position feedback component is installed at the bottom portion of a circuit board group, and the circuit board group is installed in an upper casing group; a D-Sub connector is installed at one side of the upper casing group; the lower portion of a guiding rotor group is assembled in a guiding stator group, and the lower portion thereof is matched with a bearing base module through a shaft; the driving stator group is installed at the upper portion of a rotor group, and the rotor group is installed at the upper portion of the bearing base module and is matched with the shaft of the guiding rotor group. The novel sequential switching waveguide switch employs a monostable motor to match with a ratchet transmission mechanism, employs the locking magnetic steel to perform position locking, and converts the 45-degree reciprocatingmotion of the monostable motor to the 45-degree directional rotation of the guiding rotor so as to achieve sequential switching of the four states of the switch. The novel sequential switching waveguide switch reduces the complex degree of the control device, reduces the number of drive interfaces, is compact in product structure, improves the product reliability, and facilitates achievement of the miniaturization and weight reduction of the switch.

The invention provides a frequency modulated continuous wave radar system based on random switching array antennas. The frequency modulated continuous wave radar system comprises a transmitting module, an antenna module, a switching module, a receiving module and a processing module, wherein the antenna module comprises the transmitting antenna and the receiving antenna, the transmitting antenna transmits transmitting signals, so that targets are scanned, and the receiving antenna receives target reflecting signals; the switching module comprises multiple gating switches and controls multiple receiving array elements to be connected with a single receiving channel, and the gating switches are switched randomly, so that the target reflecting signal of the receiving array element connected with the gating switch which is currently connected occupies the receiving channel; synthesized signals in the receiving channel and the transmitting signals are mixed through the receiving module, intermediate-frequency amplification and band-pass filtering are conducted on the mixed signals, and therefore intermediate-frequency signals are obtained; digital sampling is conducted on the intermediate-frequency signals and following processing is conducted through the processing module. Cost and complexity of the radar system can be effectively reduced by the system and the problem of space-time coupling caused by sequential switching of the switches can be effectively solved.

The present invention discloses an inputs switching device, includes: a plurality of external inputs accepting unit to accept different external inputs; a switching order storage unit to store a switching order of the external inputs to be output; an external inputs switching unit to switch the external inputs to be output sequentially as set forth within the stored switching order in response to a pressing of an operation key; and a non-switching unit to make the external inputs switching unit not to switch a specified external input that is specified from the external inputs of the switching order.

Several useful functions that are included in many modern day fiber optical communication systems are (1) replication of an optical signal on a single optical fiber onto a multiplicity of optical fibers, (2) amplification of optical signals, and (3) sequential switching of optical signals on a large number of optical fibers to a single or limited number of optical fibers that can each be connected to specialized performance monitoring equipment. These functions can be accomplished using a single apparatus called a multi-purpose Switched, Amplifying, Replicating and Monitoring apparatus that can manage as few as 8 optical fibers up to 512 optical fibers, or more by multiplexing.

The availability of television channels today may easily be overwhelming for a user and the use of conventional linear zapping when a user switches sequentially between channels arranged in a list as a method of finding interesting content becomes still more inefficient. Thus, a method of automatically determining a channel content for multi-media, audio, and video channels distributed to or acquired by an electronic device is provided, the method comprises the steps of collecting channel data, analyzing the data using statistical methods to determine a channel content, and categorizing the channels into predetermined clusters depending on the channel content. The determination may be made dynamically so that the clusters reflect the specific day and/or time of the day at which the electronic device is used. Also a system for providing such a method is provided.

One objective of the present invention is to provide a laser device which is capable of scanning beams of a laser light of high output power at a high speed without using mechanical scanning mechanisms. A plurality of the upper electrodes 33 is linearly arranged in the photonic crystal laser provided with an active layer 21 and a two-dimensional photonic crystal layer 23 which are held between upper electrodes 33 and a lower electrode 27. A current is introduced from one upper electrode 33 or the plurality of the upper electrodes 33 disposed adjacently. Therefore, the active layer 21 generates light and the light is intensified by diffraction in the two-dimensional photonic crystal layer 23, so that a stronger laser light is emitted to the outside from around the upper electrodes 33 into which a current is introduced. When the current-injected upper electrodes are sequentially switched, a laser light scan is performed in the direction of the array of the upper electrodes. Since this switching can be made electrically, a laser light scan can be achieved at a high speed without using the mechanical scanning mechanisms.

The invention discloses a combined method of dead zone elimination and dead zone compensation for a three-level T-type inverter. The method comprises the following steps: respectively adopting different control strategies according to two different stages of the phase current, namely, when the phase current is greater than the set threshold value, adopting a dead zone elimination strategy to change the output phase voltage only by modifying the on-off state of one of switching tubes; and when the phase current near the zero crossing point is smaller than the threshold value, adopting a dead zone compensation strategy at this time, namely, inserting the dead zone time during a sequential switching process, and then adjusting the corresponding vector action time to eliminate the voltage difference and harmonic influence caused by dead zones. Compared with a traditional space vector modulation method, the method disclosed by the invention is small in amount of calculation and simple to implement, cannot affect the closed-loop control, does not need additional hardware circuits, is fast in dead zone compensation speed, and is stable in the conversion process of two control modes. By adopting the method disclosed by the invention, the output voltage difference can be further reduced, the total current harmonic distortion rate can be significantly reduced, and the modulation index cannot be decreased.

A band selecting method applied to a voltage controlled oscillator (VCO) of a phase locked loop (PLL) and an associated method is provided. The band selecting method generates an open-loop control voltage according to a temperature signal; inputting the open-loop control voltage into the VCO; switching sequentially between a plurality of frequency bands of the VCO and generating a plurality of voltage controlled signals for the frequency bands; selecting a preferred voltage controlled signal and its corresponding frequency band as an operating band for the PLL.