63results about How to "Reduce delay effect" patented technology

Provided are a method and an apparatus for performing communication in a wireless communication system. Specifically, a control channel element is configured by using a resource element group in the same symbol of a resource block. The resource element group includes a plurality of resource elements in the same symbol. The resource block is transmitted in units of sTTIs which is set to be shorter than TTI. A control channel corresponding to the control channel element, and a data channel scheduled by the control channel are configured. The control channel and the data channel are transmitted in different frequency bands. Data is transmitted through the data channel.

A method and apparatus providing an action system for a semi-automatic shotgun including a receiver having an ejection port for expelling an empty cartridge of a fired projectile. The action system includes a bolt attached to a bolt carrier, wherein the bolt and the bolt carrier are movable within the receiver and substantially parallel to a longitudinal axis. A surface is attached to at least the bolt carrier or the receiver, and a roller is positioned rearward of the ejection port and proximate the surface, wherein a resistance is provided to rearward movement of at least the bolt or bolt carrier.

A block decoding circuit of a semiconductor memory device includes a plurality of block decoders, a plurality of repair address check circuits, a dummy repair address check circuit and a block selection signal generation circuit. The plurality of block decoders are configured to decode a received block selection address. The plurality of repair address check circuits are configured to generate second output signals based on whether a received block selection address and word line selection address are repair addresses. The dummy repair address check circuit is configured to generate a control signal in response to the block selection address and the word line selection address. The block selection signal generation circuit is configured to generate block selection signals based on the first output signals from the plurality of block decoders, the control signal from the dummy repair address circuit, and the second output signals from the repair address check circuits.

An attribute-based policy defining subjects' access to resources is enforced by a computer system. A processing means (PDP) in the system communicates with a nearby attribute value source and at least one remote attribute value source and is adapted to evaluate the policy for an access request containing one or more explicit attribute values, which together with the policy define at least one implicit reference to a further attribute value, which is retrievable from one of said attribute value sources. The processing means reduces the policy by substituting attribute values for attributes in the policy if they are contained in the request or retrievable from the nearby source. References to further attributes retrievable from a remote source only are cached together with intermediate results. All attribute values from a given remote source are retrieved on one occasion, and the intermediate results are used to terminate the evaluation.

The invention discloses a formation method of a contact hole. The method comprises the following steps: forming a grid electrode, a side wall, a sacrificial side wall, a source region and a drain region on a substrate, wherein the side wall surrounds the grid electrode; the sacrificial side wall covers the side wall; and the source region and the drain region are embedded in the substrate and are positioned at two sides of the grid electrode; forming an interlayer medium layer, thus the interlayer medium layer exposes the grid electrode, the side wall and the sacrificial side wall; removing the sacrificial side wall to form a contact space, wherein the material of the sacrificial side wall is different from materials of the grid electrode, the side wall and the interlayer medium layer; forming an electric conduction layer, wherein the electric conduction layer fills the contact space; and disconnecting the electric conduction layer to form at least two electric conductors, and each conductor is respectively connected to the source region or the drain region. The invention also discloses the contact hole. The contact hole, the grid electrode and the side wall are formed on the substrate and are embedded in the interlayer medium layer, and the side surface of the contact hole is connected to the side wall. The invention also discloses a semiconductor device and a formation method thereof. According to the invention, the number of applied masks can be reduced.

A signal extraction method is provided. In the method, signals are extracted by using K beam forming parts, wherein K is a natural number equal to or more than 2, and received signals from a plurality of antennas are applied to each beam forming part. The method includes the steps of: the received signals being processed by each beam forming part successively; a first beam forming part extracting a first signal from the received signals; and a kth beam forming part canceling, from the received signals, signal components which are extracted by beam forming parts from the first beam forming part to a (k−1)th beam forming part so as to extract a kth signal, wherein 2≦k≦K.

The invention provides a digital single cycle method control active power filter based on delay compensation, belonging to the field of digital control. The implementation of the filter comprises the following steps: (1) detecting load current and using a harmonic calculation method to calculate harmonic current ilha, ilhb, and ilhc, (2) detecting three-phase power supply voltage ea, eb and ec and DC side capacitance voltage Udc, and inputting the three-phase power supply voltage and the DC side voltage into a DSP(digital signal processor) for sampling, (3) inputting the above sampling value into a single cycle control module to calculate the duty ratio of a switch tube, and (4) multiplying the calculated duty ratio with the cycle register value of a timer in the DSP, taking the result as the value of a comparison register, controlling the DSP to generate a PWM signal, controlling the switch-on and switch-off of a switch in a converter, turning on a switch device when the PWM signal is high level, turning off the switch device when the PWM signal is low level, and thus generating compensation current. According to the active power filter, the delay effect of the active power filter can be effectively reduced.