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564 results about "High- and low-level" patented technology

High-level and low-level, as technical terms, are used to classify, describe and point to specific goals of a systematic operation; and are applied in a wide range of contexts, such as, for instance, in domains as widely varied as computer science and business administration.

Multiple hierarichal/peer domain file server with domain based, cross domain cooperative fault handling mechanisms

A shared system resoure such as a file server includes an integrated, cooperative cluster of domains that include hierarchically related domains and peer related domains, each performing functions supporting the services provided by the system resource. Hierarchically related domains include a higher level domain and a lower level domain respectively performing higher and lower level operations of functions supporting the system resource services and peer related domains include parallel domains performing operations in mutual support of functions supporting the system resource services. A domain may include fault handling mechanisms operating independently of and cooperatively with fault handling mechanisms of other domains, and domain may be comprised of domains. In hierarchically related domains, the lower level domain includes peer related domains performing operations in mutual support of functions of the upper level domain and peer domain includes a monitoring mechanism monitoring operations of the other peer domain that are related to the operations performed in support of the upper level domain. Each monitoring mechanism is responsive to detection of a failure in the other peer domain for directing the peer domain in which the monitoring mechanism resides in assuming the operations performed by the peer domain in support of related functions of the upper level domain independently of operations of the peer domain and independently of a source of the failure in the other peer domain.
Owner:EMC IP HLDG CO LLC

Organic light emitting diode display device and method for driving the same

Discussed are an organic light emitting diode (OLED) display device and a method for driving the same. The OLED display device includes pixels each including a light emitting element, and a pixel driving circuit. The pixel driving circuit includes a driving switching element connected in series between high and low-level voltage supply lines, together with the light emitting element, a first switching element for connecting a data line and a first node connected to a gate of the driving switching element in response to a first scan signal, a second switching element for connecting an initialization voltage supply line and a second node connected to a source of the driving switching element in response to a second scan signal, and a third switching element for connecting the high-level voltage supply line and a drain of the driving switching element in response to an emission signal.
Owner:LG DISPLAY CO LTD

Braking energy recovery system for electric vehicle

The invention relates to a braking energy recovery system for an electric vehicle, comprising a three-phase staggered two-way half-bridge circuit, a gear selection circuit, a sampling hold circuit, a digital chip, a voltage sampling circuit, a current sampling circuit and a driving circuit which are sequentially connected. Two-way half-bridge DC / DC converters are connected in parallel, the three-phase staggered two-way half-bridge circuit serves as a main circuit topology of the system, high and low levels are output through an I / O port to control the switching-on / off of relays so as to select different power requirement gears, and finally, the purpose of recovering the braking energy of motors with different output power is realized. According to the invention, the reliability of the device is improved, current ripples are reduced, and the volume of inductors and the capacity of capacitors are reduced, so that the device is easier to realize; the system can be used for multiple DC motors with different output power requirements; the system can effectively prevent current from being out of control under fault conditions so as to quickly finish overcurrent protection; and in addition, a three-phase staggered DC / DC converter system and an active inverter system are consistent in structure, thereby being favorable for realizing a modular structure of an electric vehicle system.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Shift register unit, grid driving circuit and display device

The invention discloses a shift register unit, a grid driving circuit and a display device. Specifically, the shift register unit comprises a pull-up control module, a pull-up module, a pull-down control module and a pull-down module; the pull-up module provides a first clock signal to a transmission signal output terminal according to a pull-up control signal and provides first direct-current supply voltage to a grid driving signal output terminal according to the pull-up control signal and the first clock signal, wherein the first clock signal is input by a first clock signal input terminal. Due to the fact that the first direct-current supply voltage is used as input of a transistor, used for outputting grid driving signals, in the pull-up module, the transistor has no capacity coupling effects, namely, due to the fact that high and low level conversion does not exist in the first direct-current supply voltage, stray capacitance generated by the transistor cannot be charged or discharged frequently, power losses are reduced and the problem that power consumption of a common shift register unit is high is solved.
Owner:BOE TECH GRP CO LTD +1

Electrooptic device, driving circuit, and electronic device

A driving circuit of an electrooptic device includes: a plurality of scanning lines; a plurality of data lines; first and second capacitor lines; a common electrode; pixels; a scanning-line driving circuit; a capacitor-line driving circuit; and a data-line driving circuit. The pixels each include: a pixel switching element; a pixel capacitor disposed between the pixel switching element and the common electrode; and a storage capacitor. When the one scanning line is selected, the capacitor-line driving circuit shifts the voltage of a first (or second) capacitor line corresponding to one scanning line to one of higher and lower levels from a predetermined voltage by a predetermined value, and holds the predetermined voltage after a scanning line apart from the one scanning line by a predetermined number of lines is selected until the one scanning line is selected again.
Owner:JAPAN DISPLAY WEST

Determinant linear array coordinate scanning circuit

The invention discloses a determinant linear array coordinate scanning circuit, comprising an m-channel pulse distribution circuit, a key press event judging circuit, a determinant signal filter shaping and coordinate latch signal generating circuit, a determinant coordinate coding circuit and a determinant coordinate value storage circuit. The m-channel pulse distribution circuit sequentially outputs low level at a line port of an m*n matrix key press circuit, a key press event indicating circuit judges the occurrence of the key press event according to the high and low level at a row port, the determinant coordinate coding circuit 4 codes the line port and the row port to the determinant coordinate according to the current state value, after the key press event indicating signal is generated, the output result of the current determinant coordinate coding circuit is latched in the coordinate value storage circuit by using the latch signal generated by the determinant signal filter shaping and coordinate latch signal generating circuit, and the determinant coordinate value of the coordinate value storage circuit is the coordinate of the key currently pressed. The determinant linear array coordinate scanning circuit has the advantages of concise design, convenient implementation, low hardware cost and no loss of generality.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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