43results about How to "Save CPU time" patented technology

The conversion device includes an input for receiving data corresponding to an image to be displayed. The received data is in a JPEG decoder output data format A processor is included for reconstructing and writing the image to be displayed into the image memory, in a display module expected input data format. The bandwidth of the image memory is greater than one byte. The processor is fully hardwired and includes a first logic stage for writing the received data byte by byte into an intermediate memory at chosen addresses such that the written data form a sequence of data in the display module expected input data format, and a second logic stage for reading the written data in the intermediate memory, forming successive packets of read data having a size corresponding to the bandwidth, and successively writing the packets into the image memory at chosen addresses such that the written packets together form all the lines of the image.

The invention discloses a keyboard circuit capable of improving key-press scanning speed. In the keyboard circuit, one ends of each column line and row line are connected with a power supply through a current limiting resistor; the other ends of the column line which are multiplexed by a PNP (positive-negative-positive) switching transistor and the other ends of the m column lines which are multiplexed by an NPN (negative-positive-negative) switching transistor are connected correspondingly with the I / O interfaces, namely P1.1, P1.2,...,P1.m after being multiplexed; meanwhile, the half of therest column lines which are multiplexed by the PNP switching transistor and the other half which are multiplexed by the NPN switching transistor are correspondingly connected with I / O interfaces, namely P[1.(m+1)], P[1.(m+2)],...,P[1.(m +n) / 2]; the base of each switching transistor is connected to the I / O interface P[1.0] through the current limiting resistor; the column line and the row line of each key-press are connected with the ground wire through a combination switch; all the column lines are connected to the inputs of interrupt Input port through an AND circuit unit. The keyboard circuit provided by the invention has the advantages that when the sum of the column lines and the row lines of the key circuit is 2N, the required number of the I / O interfaces is N+1, and when the sum of the column lines and the row lines is 2N+1, the required number of the I / O interfaces is N+2 and the values of column and the row can be obtained after scanning for two times.

The present invention relates to a redundancy filling method of semiconductor manufacturing process. The method involves providing a circuit pattern, generating a density report for the circuit pattern that identifies a feasible area for dummy insertion, simulating a planarization process with the density report and identifying a hot spot on the circuit pattern, inserting a virtual dummy pattern in the feasible area and adjusting the density report accordingly, and thereafter simulating the planarization process with the adjusted density until the hot spot is eliminated. The present invention provides a method for reducing the dummy metal count in a circuit design thereby saving mask making time, CPU runtime, and data storage memory. This will help achieve design timing closure quicker and easier.

A double focal spot X-ray tube is used to acquire a set of two images PIα, PIβ for a given gantry position from slightly different view positions. The stereo or binocular disparity (BD) of imaged structures is used to estimate the object depth in view direction, which in turn is used to discriminate between objects inside IO and outside EO the body. Respective structures are virtually removed from the images PIα, PIβ.

The invention relates to the router design and research field of the mobile wireless self-organized network, which is more particularly characterized by including the flowing steps sequentially: the initial TTL values of the IP messages sent by all nodes are set to be 64. When the node sends an IP message, a router stored to a target IP is only sent to a next corresponding hop, or floods the messages to all the neighbors. When the node receives the IP message, the retransmitting hop times passed by the message can be analyzed according to the current TTL value of the message, and the shortest path to the source can be determined by combining the corresponding routing items of the node. The non-shortest routing produced in the process of flooding can be deleted for overtime as no corresponding IP message is transmitted. The invention realizes a novel rapid and simple Ad Hoc path-finding method with low protocol bandwidth consumption.

The invention discloses a monitoring method and system for MPEG video transmission quality, and relates to the field of video transmission quality monitoring. The DF calculation process of this method includes: after the monitoring node segments the video encoding data payload of the IP data packet in MPEG format, writes it into the MR file; For file segmentation, calculate MR according to the PCR and traversal offset of two file segments; after the monitoring node calculates the virtual cache VBpre and VBpost before and after receiving the IP packet, calculate DF according to the VBpre and VBpost calculated within the specified time; The MLR calculation process includes: the monitoring node calculates the MLR according to the SEQ field or the CC field of the IP data packet. The invention can accurately and efficiently calculate the DF and MLR of the video stream, and monitor the transmission quality of the MPEG video through the DF and the MLR.

The invention discloses an optimization method for improving Bluetooth positioning accuracy, and the method comprises the steps: setting a cache container to obtain and store gateway data between eachgateway and a positioning label in a time period at a time, enabling the gateway data to become a calculation period, and enabling the gateway data to be a signal intensity value between each gatewayand the positioning label; Grouping the gateway data according to the positioning tags, selecting the gateway with the highest signal intensity value from the list of the target positioning tags as areference gateway point, storing the reference gateway point in a cache container, and selecting the gateway with the signal intensity value only smaller than that of the reference gateway point fromthe list of the target positioning tags as an auxiliary gateway point; And converting the intensity values between the reference gateway point and the target positioning tag and the intensity valuesbetween the auxiliary gateway point and the target positioning tag into distance values, and calculating the coordinate value of the target positioning tag according to the coordinate positions of thereference gateway point and the auxiliary gateway point. By combining the physical characteristics of the Bluetooth positioning tag and the Bluetooth positioning gateway, the positioning accuracy ofthe Bluetooth positioning tag is improved.

An image reconstruction apparatus and related method. The amount of out-field-of view material for a CT scanner (IMA) with a given field of view (FoV) in a bore (B) is established. Based on the measurement, a hybrid-image reconstructor (RECONX) is configured to switch between different reconstruction algorithms.

The invention provides a method for correcting the low-level cut height of an infrared occultation sensor based on a non-absorbing spectrum. The detection spectral data above the height; Step 2: Analyze the detection spectral data to determine the low-level cut height range to be corrected; Step 3: Through the HITRAN spectral absorption library, analyze the effective observation spectrum of GF-AIUS (750-4100cm ‑1 ) within the position of the completely non-absorbing band; step 4: high-pass filter the spectrum of the full effective band, extract the spectral data of the non-absorbing band within the corresponding cut height range, and calculate the scaling factor; step 5: according to the scaling factor, Correct the spectrum on the lower cut height; Step 6: Carry out atmospheric correction on the lower cut height. The beneficial effects of the present invention are: the rapid height-cut correction method of the present invention is simpler, faster and more accurate.