摘要:
In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used in selecting a transform function to apply to a subsequent signal. Characteristics are obtained from the signal. The characteristics are compared to adjustable criteria which are used in selecting a transform function. Differing criteria are maintained for the different selectable transform functions. A record is maintained of transform functions selected and the particular characteristics that caused the selection. Based on the ability of a transform function to minimally define the coded signal, an inverse transform function is selected to decode the signal. The criteria used in selecting a transform function to apply to a subsequent signal are adjusted based on a quality measure of the decoded signal and the record of selected transform functions.
摘要:
The present invention concerns a mechanical method for generating nanostructures in order to obtain on a surface of a metal piece a nanostructured layer of defined thickness. A quantity of perfectly spherical balls (22) are disposed in a chamber that is closed for the size of the balls. At least one of the walls of the chamber supports or constitutes the piece to be treated (10). A vibrating motion is imparted to the chamber in a direction perpendicular to the plane of the circular motion of the chamber supporting or constituting the piece to be treated. The speed of the circular motion and the frequency and amplitude of the vibrating motion is determined based on the physical properties of the balls so as to communicate to the latter sufficient kinetic energy to create nanostructures on the material of the piece treated by impaction of the balloon surface of the piece.
摘要:
A system for estimating block motion from a previous frame to a current frame, wherein motion vectors have been computed for blocks in the previous frame. The system comprises a P-checkerboard processor, an S-checkerboard processor and a block matching engine. The a P-checkerboard processor selects a first current block from a primary checkerboard pattern, retrieves motion vectors for reference blocks in the previous frame, and uses the retrieved motion vectors to generate a temporal search window. The block matching engine locates in the temporal search window a block which best matches the first current block, and determines the current motion vector from the best matching block to the first current block. Alternatively, the a P-checkerboard processor can use the retrieved motion vectors to interpolate the current motion vector. The S-checkerboard processor selects a second current block from a secondary checkerboard pattern, and uses the current motion vector to generate a spatial dynamic search window. The block matching processor locates in the spatial search window the block which best matches the second current block, and determines the current motion vector from the best matching block to the second current block.
摘要:
Hardware and software configurations, optionally, for performing profilometry of an object are disclosed. An advantageous imaging device is described. An advantageous approach to determining imager position is also described. Each aspect described may be used independently of the other. Moreover, the teaching may find use in other fields including velocimetry, etc.
摘要:
A seat angle adjustment device includes a ratchet wheel, a stop plate, a locking slipper and a pawl, wherein a first stop position limiting part and a second stop position limiting part are arranged on the stop plate, when the first stop position limiting part is subjected to a rotating torque in a rotational direction, the locking slipper in a locking position circumferentially abuts against the first stop position limiting part; when the rotating torque is higher than a first preset torque value, the pawl in an extended state is driven by the ratchet wheel to rotate until the tooth part on one side of the pawl is completely engaged with the ratchet wheel; and when the rotating torque is higher than a second preset torque value, the second stop position limiting part abuts against the pawl. A seat having the seat angle adjustment device is also provided.
摘要:
Compositions and methods comprising polynucleotides and polypeptides having 4-hydroxyphenylpyruvate dioxygenase (HPPD) activity and having insensitivity to an HPPD inhibitor are provided. Further provided are nucleic acid constructs, plants, plant cells, explants, seeds and grain having the HPPD sequences. Various methods of employing the HPPD sequences are provided. Such methods include, for example, methods for producing an HPPD inhibitor tolerant plant, plant cell, explant or seed and methods of controlling weeds in a field containing a crop employing the plants and/or seeds disclosed herein. Methods are also provided to identify additional HPPD variants. Further provided are various methods and compositions that allow the various HPPD polypeptides and variant and fragments thereof to be expressed in a chloroplast or transported to a chloroplast.
摘要:
Chimeric polynucleotides comprising a nucleotide sequence encoding a chloroplast transit peptide operably linked to a heterologous polynucleotide of interest are provided, wherein the chloroplast transit peptide comprises an amino acid sequence having the chloroplast transit peptide sequence as set forth in SEQ ID NO:1 or a biologically active variant or fragment thereof or wherein the chloroplast transit peptide comprises the sequence set forth in SEQ ID NO: 58 or an active variant or fragment thereof. Chimeric polypeptides encoding the same, as well as, cells, plant cells, plants and seeds are further provided which comprise the chimeric polynucleotides. Compositions further include HPPD polypeptides and polynucleotides encoding the same as set forth in SEQ ID NOS: 57 and 60 or active variants and fragments thereof. Such sequences comprise the chloroplast transit peptide as set forth in SEQ ID NO: 58 or an active variants or fragments thereof. Cells, plant cells, plants and seeds are further provided which comprise such sequences. Methods of use of the various sequences are also provided.
摘要翻译:提供了包含编码与目标异源多核苷酸有效连接的叶绿体转运肽的核苷酸序列的嵌合多核苷酸,其中叶绿体转运肽包含具有如SEQ ID NO:1所示的叶绿体转运肽序列的氨基酸序列或生物学上 活性变体或其片段,或其中叶绿体转运肽包含SEQ ID NO:58所示的序列或其活性变体或片段。 还提供了编码其的嵌合多肽,以及细胞,植物细胞,植物和种子,其包含嵌合多核苷酸。 组合物还包括编码与SEQ ID NO:57和60所示相同的HPPD多肽和多核苷酸或其活性变体和片段。 这样的序列包含如SEQ ID NO:58所示的叶绿体转运肽或其活性变体或片段。 进一步提供包含这些序列的细胞,植物细胞,植物和种子。 还提供了使用各种序列的方法。
摘要:
A composite steel plate includes at least two steel sheets rolled to form a plate. One of the sheets has a composition that varies in a depthwise direction, between nanocrystalline and micron grained. The plate is made by treating a steel sheet to produce a composition in the sheet that varies in a depthwise direction of the sheet between nanocrystalline and micron grained, stacking the treated sheet with at least one other steel sheet, and rolling the stacked sheets to form the plate.
摘要:
Systems and methods are provided for identifying a video object using digital fingerprints. The digital fingerprints are generated from information extracted from the video object including encoded video. The digital fingerprints can be calculated in a manner that permits identification of both the video object and operational characteristics of the video object based on matching calculated digital fingerprints with known fingerprints of known video objects. Systems and methods are described that allow a DVD to be uniquely identified and identify whether the DVD is original, copied or pirated. Systems and methods are described for computing digital fingerprints from strings of bits in which certain additional data is optionally embedded. Systems and methods are described that permit media players to access known signatures of known video objects maintained on one or more databases and to identify video objects presented for playing on the media player.
摘要:
A ventilated brake rotor (24) includes vent holes (42) between inboard (32) and outboard (34) friction plates. The vent holes (42) are separated by ribs (40) spaced in regular circumferential increments about the rotor (24). The rib pattern (40) is divided into two or more sectors (48) of equal angular measure. Within each sector (48), an attenuation region (50) interrupts two or more ribs (40) by replacing the ribs (40) with a cluster of individual pins (54) which may be arranged in radial and circumferential rows. Each attenuation region (50) spans a territory within each sector (48) that is preferably at least 20% and less than 55% of the sector (48) real estate. The rotor (24) completely or at least substantially eliminates vibration modes in objectionable, audible frequencies without adversely affecting the structural integrity, cooling capabilities or functional attributes of the disc brake assembly (22).