46results about How to "Significant compression" patented technology

The present invention relates to a medical prosthesis having a low profile for delivery into a body lumen. The stent includes a plurality of geometric cells defining the stent, which has first and second opposed open ends; and a plurality of wire strands woven to form a plurality of crossed regions defining the geometric cells. Each wire strand has strand ends and the strand ends are disposed at the second end of the stent.

A “Keyframe Stitcher” provides an efficient technique for building mosaic panoramic images by registering or aligning video frames to construct a mosaic panoramic representation. Matching of image pairs is performed by extracting feature points from every image frame and matching those points between image pairs. Further, the Keyframe Stitcher preserves accuracy of image stitching when matching image pairs by utilizing ordering information inherent in the video. The cost of searching for matches between image frames is reduced by identifying “keyframes” based on computed image-to-image overlap. Keyframes are then matched to all other keyframes, but intermediate image frames are only matched to temporally neighboring keyframes and neighboring intermediate frames to construct a “match structure.” Image orientations are then estimated from this match structure and used to construct the mosaic. Matches between image pairs may be compressed to reduce computational overhead by replacing groups of feature points with representative measurements.

The present invention relates to a medical prosthesis having a low profile for delivery into a body lumen. The stent includes a plurality of geometric cells defining the stent, which has first and second opposed open ends; and a plurality of wire strands woven to form a plurality of crossed regions defining the geometric cells. Each wire strand has strand ends and the strand ends are disposed at the second end of the stent.

An architecture in which data outputs from an application program into a communication interface are diverted, by changing their address to a reserved address, and then are processed further by an added program which is invisible to the application program.

A mammographic method and apparatus are provided for obtaining improved compression of posterior, middle and anterior breast tissue without pushing posterior breast tissue from the imaging volume and with less discomfiture to the patient. An initial compression of the posterior tissue is achieved by vertical, relative displacement of the paddle relative to the bucky assembly to compress the posterior breast tissue therebetween. Less patient discomfiture is achieved by using an inclined compression surface on the paddle or bucky assembly to compress the anterior and middle breast sufficiently for good X-ray imaging without further displacement of the skin adjacent the chest wall. A horizontal force component inclined force will not push the posterior compressed breast tissue from the imaging area. Herein a paddle may have a posterior breast section and have a flexed section which is biased to engage and conform to the breast shape. The flexed section may be releasably held by a lock and then released to apply compression forces to the middle and anterior breast. The flexed section is guided to remain level and to uniformly compress breasts which are not centered thereunder and without binding. The buckey assembly may have a hinged inclined section to compress the middle and anterior portions of the breast. The entire bucky assembly may be hinged to raise the image detector thereon and thereby lessen the heel effect. Alternatively, the bucky cover may be hinged to swing upwardly into an inclined position to compress the middle and anterior breast portions while the image detector is not.

A compressor (20) is provided with compression mechanisms (61, 62) to have four compression chambers (61, 62, 63, 64) in total. In the compressor (20), the first compression chamber (61) and the second compression chamber (62) differ in the phase of capacity changing cycle from each other by 180° and the third compression chamber (63) and the fourth compression chamber (64) also differ in the phase of capacity changing cycle from each other by 180°. In a cylinder nonoperating mode, refrigerant is compressed in a single stage in each of the first compression chamber (61) and the second compression chamber (62) while the refrigerant compression operation is halted in the third compression chamber (63) and the fourth compression chamber (64). In a two-stage compression mode, refrigerant compressed in a single stage in each of the first compression chamber (61) and the second compression chamber (62) is further compressed in the third compression chamber (63) and the fourth compression chamber (64).

A method and apparatus provides OFDM signal compression for transfer over serial data links in a base transceiver system (BTS) of a wireless communication network. For the uplink, an RF unit of the BTS applies OFDM cyclic prefix removal and OFDM frequency transformation of the baseband signal samples followed by frequency domain compression of the baseband signal samples, resulting from analog to digital conversion of received analog signals followed by digital downconversion, forming compressed coefficients. After transfer over the serial data link, the baseband processor applies frequency domain decompression to the compressed coefficients prior to further signal processing. For the downlink, the RF unit performs frequency domain decompression of the compressed coefficients and applies OFDM inverse frequency transformation of the decompressed coefficients and OFDM cyclic prefix insertion prior to digital upconversion and digital to analog conversion, generating the analog signal for transmission over the antenna.

A dilation device for an intrabody lumen, for example, a urethra partially occluded by an enlarged prostate in the form of a curved element configured to be implanted around the lumen and add resilience to the lumen, and a method for dilating such a lumen by implanting a dilation device around the outside of the lumen with at least part of the dilation device embedded in surrounding, thereby preventing clinically significant compression of the lumen. Also, an implantation device for such a dilation device in the form of a mounting device configured to carry the dilation device; and a releasably attached movable holder, with the mounting device and holder configured to deliver the dilation device though a working channel to a desired position in a lumen, and to implant the dilation device through a wall of the lumen to a position surrounding the lume.

The present invention provides an apparatus and method for storing instruction set information. The apparatus comprises a processing circuit for executing processing instructions from any of a plurality of instruction sets of processing instructions, each processing instruction being specified by an instruction address identifying that processing instruction's location in memory. A different number of instruction address bits need to be specified in the instruction address for processing instructions in different instruction sets. The apparatus further comprises encoding logic for encoding an instruction address with an indication of the instruction set corresponding to that instruction to generate an n-bit encoded instruction address. The encoding logic is arranged to perform the encoding by performing a computation equivalent to extending the specified instruction address bits to n-bits by prepending a pattern of bits to the specified instruction address bits, the pattern of bits prepended being dependent on the instruction set corresponding to that instruction. Preferably, the encoded instruction address is then compressed. This approach provides a particularly efficient technique for incorporating instruction set information with instruction addresses, and will be useful in any implementations where it is desired to track such information, one example being in tracing mechanisms used to trace the activity of a processing circuit.

A method and apparatus provide signal compression for transfer over serial data links in a base transceiver system (BTS) of a wireless communication network. For the uplink, an RF unit of the BTS applies frequency domain compression of baseband signal samples, resulting from analog to digital conversion of received analog signals followed by digital downconversion, forming compressed coefficients. After transfer over the serial data link, the baseband processor then applies frequency domain decompression to the compressed coefficients prior to normal signal processing. For the downlink, the baseband processor applies frequency domain compression of baseband signal samples and transfers the compressed coefficients to the RF unit. The RF unit applies frequency domain decompression to the compressed coefficients prior to digital upconversion and digital to analog conversion, generating the analog signal for transmission over the antenna. This abstract does not limit the scope of the invention as described in the claims.

In exemplary embodiments of the present invention, systems and methods for providing collapsible luggage are presented. Such exemplary collapsible luggage can have two states: (i) a fully extended state in which said luggage is used by a user to hold, for example, clothing and objects, and (ii) a compressed or folded state in which the luggage has a minimum volume and can be easily and conveniently stored, especially where space is a premium. Various novel technologies are used to obtain maximal compression in the compressed state, provide rigidity and structural support in the fully extended state, and to allow for convenient transformation between the two states. One of such technologies is a self-locking hinge mechanism requiring no direct contact from a user, which also provides audible feedback to the user.

A method and system for spatially compositing digital video images with a tile pattern library. Spatial compositing uses a graphics pipeline to render a portion (tile) of each overall frame of digital video images. This reduces the amount of data that each processor must act on and increases the rate at which an overall frame is rendered. Optimization of spatial compositing depends on balancing the processing load among the different pipelines. The processing load typically is a direct function of the size of a given tile and an inverse function of the rendering complexity for objects within this tile. Load balancing strives to measure these variables and adjust, from frame to frame, the number, sizes, and positions of the tiles. The cost of this approach is the necessity to communicate, in conjunction with each frame, the number, sizes, and positions of the tiles. A tile pattern library is a collection of sample compositing windows of various shapes each of which is decomposed into tiles of various shapes and positions. Associated with each sample in the tile pattern library is an index code that can be used to communicate the overall pattern. This reduces the amount of data needed to convey the parameters that define each tile.

A variable compression engine has a relief valve disposed in the combustion chamber thereof to reduce compression. The relief valve is open for a portion of the compression stroke of the engine. The open relief valve permits a portion of the fuel / air mixture introduced via the intake valve to leave the combustion chamber and return to the fuel supply or intake manifold via a check valve that prevent flow into the combustion chamber through the relief valve. Timing of the opening and closing of the relief valve is selectable via a cam-operated hydraulically operated by a camshaft rotating once for every two revolutions of the engine's crankshaft, or timing of opening and closing may be achieved by other suitable mechanisms. Additionally, the height of lift of the relief valve can be varied to further adjust compression around a selected relief valve opening point.

A medical stabilization device that directs medical tubing onto a compressible foam block where it is attached and stabilized to the patient's body allowing it to be secured against excessive movement, tube dislodgement and positioned in a time efficient manner to prevent obstruction of patient treatment.

In exemplary embodiments of the present invention, systems and methods for providing foldable duffle bags are presented. Such exemplary collapsible duffles can have two states: (i) a fully extended state in which said luggage is used by a user to hold, for example, clothing and objects, and its wheels fully extended and usable, and (ii) a compressed or folded state in which the luggage has a minimum volume and can be easily and conveniently stored and carried, especially where space is a premium, where the wheels are invisible and out of the way. Various novel technologies are used to obtain maximal compression in the compressed state, and to allow for convenient transformation between the two states. Exemplary duffles of rather significant fully expanded size can be rolled or folded onto themselves, the wheels can be turned inside out, and the article compressed into a small hand held carrying case.

A medical stabilization device that directs medical tubing onto a compressible foam block where it is attached and stabilized to the patient's body allowing it to be secured against excessive movement, tube dislodgement and positioned in a time efficient manner to prevent obstruction of patient treatment.