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148results about How to "Improve area efficiency" patented technology

Symmetrically and asymmetrically stacked transistor group RF switch

A silicon-on-insulator (SOI) RF switch adapted for improved power handling capability using a reduced number of transistors is described. In one embodiment, an RF switch includes pairs of switching and shunting stacked transistor groupings to selectively couple RF signals between a plurality of input / output nodes and a common RF node. The switching and shunting stacked transistor groupings comprise one or more MOSFET transistors connected together in a “stacked” or serial configuration. In one embodiment, the transistor groupings are “symmetrically” stacked in the RF switch (i.e., the transistor groupings all comprise an identical number of transistors). In another embodiment, the transistor groupings are “asymmetrically” stacked in the RF switch (i.e., at least one transistor grouping comprises a number of transistors that is unequal to the number of transistors comprising at least one other transistor grouping). The stacked configuration of the transistor groupings enable the RF switch to withstand RF signals of varying and increased power levels. The asymmetrically stacked transistor grouping RF switch facilitates area-efficient implementation of the RF switch in an integrated circuit. Maximum input and output signal power levels can be withstood using a reduced number of stacked transistors.
Owner:PSEMI CORP

Symmetrically and asymmetrically stacked transistor grouping RF switch

A silicon-on-insulator (SOI) RF switch adapted for improved power handling capability using a reduced number of transistors is described. In one embodiment, an RF switch includes pairs of switching and shunting stacked transistor groupings to selectively couple RF signals between a plurality of input / output nodes and a common RF node. The switching and shunting stacked transistor groupings comprise one or more MOSFET transistors connected together in a “stacked” or serial configuration. In one embodiment, the transistor groupings are “symmetrically” stacked in the RF switch (i.e., the transistor groupings all comprise an identical number of transistors). In another embodiment, the transistor groupings are “asymmetrically” stacked in the RF switch (i.e., at least one transistor grouping comprises a number of transistors that is unequal to the number of transistors comprising at least one other transistor grouping). The stacked configuration of the transistor groupings enable the RF switch to withstand RF signals of varying and increased power levels. The asymmetrically stacked transistor grouping RF switch facilitates area-efficient implementation of the RF switch in an integrated circuit. Maximum input and output signal power levels can be withstood using a reduced number of stacked transistors.
Owner:PSEMI CORP

Photovoltaic module

The present invention provides a photovoltaic module which prevents enlargement of the dimensions of a photovoltaic submodule by reducing ineffective parts which do not contribute to power generation. The photovoltaic module comprises a photovoltaic submodule including a plurality of solar cells interposed between two light-transmitting substrates through the intermediary of an encapsulant, and a connecting lead extending from an edge between the two light-transmitting substrates for outputting generated electric current, a terminal box 30 attached near to the edge of the photovoltaic submodule housing a connecting part between the connecting lead and a cable for outputting generated electric current to the outside, and an outer frame set around the outer circumference of the photovoltaic submodule. An opening 28 through which the connecting lead and the terminal box are inserted is provided to the outer frame at a position which receives at least the terminal box.
Owner:SANYO ELECTRIC CO LTD

Semiconductor device and production method therefor

A method of producing a semiconductor device including a MOS transistor, includes the steps of forming, on a top surface of at least one of semiconductor pillars, an epitaxial layer having a top surface larger in area than the top surface of the at least one of the semiconductor pillars and forming a source region or a drain region so as to be at least partially in the epitaxial layer.
Owner:UNISANTIS ELECTRONICS SINGAPORE PTE LTD

Methods, circuits, architectures, software and systems for determining a data transmission error and/or checking or confirming such error determinations

Methods, circuits, architectures, and systems for error detection in transmitted data. The method generally includes the steps of (a) performing an error checking calculation on the transmitted data and appended error checking code; (b) determining the calculated error checking code state; and (c) if it has a predetermined state, indicating that there is no error in the transmitted data. The circuitry generally comprises (1) an error checking code calculation circuit configured to calculate error checking code on the transmitted data and the appended error checking code; (2) a vector selector configured to select one of a plurality of error checking vectors; and (3) a logic circuit configured to determine the calculated error checking code state and, if it has a predetermined state, indicate that there is no error in the transmitted data. The software generally includes a set of instructions configured to implement or carry out the present method. The architectures and/or systems generally include those that embody one or more of the inventive concepts disclosed herein. In the present invention, an error checking calculation is performed on error checking code transmitted with the data. If the transmitted data and error checking code are error-free, the error checking calculation gives a result having a known and/or predetermined state. This technique enables one to confirm or determine that the data transmission was error-free without use of or need for a wide, complicated comparator, thereby reducing the chip area dedicated to error detection, increasing the utilization efficiency of the circuitry on the chip, and reducing power consumption.
Owner:MARVELL ISRAEL MISL

Multithread processor and digital television system

A multithread processor including: an execution unit including a physical processor; and a translation lookaside buffer (TLB) which converts, to a physical address, a logical address output from the execution unit, and logical processors are implemented on the physical processor, a first logical processor that is a part of the logical processors constitutes a first subsystem having a first virtual space, a second logical processor that is a part of the logical processors and different from the first logical processor constitutes a second subsystem having a second virtual space, each of the first and the second subsystems has processes to be assigned to the logical processors, and the logical address includes: a first TLB access virtual identifier for identifying one of the first and the second subsystems; and a process identifier for identifying a corresponding one of the processes in each of the first and the second subsystems.
Owner:PANASONIC CORP

Standard cell, standard cell library, semiconductor device, and placing method of the same

Of a plurality of standard cells in which an N-well region and a P-well region are vertically formed, some standard cells have a border line between the N-well region and the P-well region which is set to be a low height (first height), and other standard cells have a border line between the N-well region and the P-well region which is set to be a high height (second height), depending on the size of a transistor formed in the standard cell. Although these standard cells have different border lines, a standard cell for linking the border lines is provided. In such a standard cell, an empty space is created by forming a small-size transistor therein, and the empty space is utilized so that, for example, a left end of the border line is set to have the first height and a right end of the border line is set to have the second height, whereby the border line is converted so as to link the heights therein.
Owner:SOCIONEXT INC

Switched-capacitor regulators

A switched-capacitor regulator is provided for regulating the output voltage of a voltage supply. The switched-capacitor regulator includes a supply input terminal capable of receiving a supply voltage, two or more flying capacitors, a regulation switch located between each flying capacitor and the supply input terminal, and a voltage control circuit. The activity of the regulation switches is controlled by the voltage control circuit. In one embodiment of the invention, the voltage control circuit includes a feedback resistance area having one or more feedback resistors located between the output of the flying capacitors and a ground terminal, a first gain stage connected to the feedback resistance area, and two or more second switchable gain stages, which are each connected to a regulation switch and the first gain stage. The switched-capacitor regulator operates in pseudo-continuous regulator mode using three-stage switchable operational amplifiers with time-multiplexed pole-splitting compensation.
Owner:THE HONG KONG UNIV OF SCI & TECH
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