Abstract: A camera module includes a housing, a movable body configured to move in a direction of an optical axis of the housing; a reinforcing member formed integrally on one surface of the movable body, and configured to increase a rigidity of the movable body; and a first buffer member formed in the reinforcing member, and configured to reduce an impactive force between the housing and the movable body.

Abstract: In a method of inspecting a surface of a substrate, a first surface image of the substrate before loaded into a process chamber may be obtained. The first surface image may be processed to detect a defect on the surface of the substrate. Thus, the surfaces of all of the substrate may be inspected during a process may be performed without transferring the substrates.

Abstract: In a method of inspecting a surface of a substrate, a first surface image of the substrate before loaded into a process chamber may be obtained. The first surface image may be processed to detect a defect on the surface of the substrate. Thus, the surfaces of all of the substrate may be inspected during a process may be performed without transferring the substrates.

Abstract: The present invention provides a method and apparatus for preprocessing a page image reproduced from a storage medium in a holographic system. The present invention calculates pixel sums for each lines in the page image to select a maximum sum, calculates a modified maximum sum using the modified maximum sum and its neighboring sums, determines a compensation location for distorted pixels using the modified maximum sum and performs over-sampling a data image with reference to the compensation location of magnified pixels, to thereby compensate the data image with high precision in sub-pixels.

Abstract: The present invention provides a method and apparatus for preprocessing a page image reproduced from a storage medium in a holographic system. The present invention calculates pixel sums for each lines in the page image to select a maximum sum, calculates a modified maximum sum using the modified maximum sum and its neighboring sums, determines a compensation location for distorted pixels using the modified maximum sum and performs over-sampling a data image with reference to the compensation location of magnified pixels, to thereby compensate the data image with high precision in sub-pixels.

Abstract: In an apparatus for processing holographic data reproduced from a holographic medium, a data arranging unit arranges input data in a form of M1×M2 data pixels on a page basis to thereby generate arranged data. Then, a holographic data detector outputs a page image including a detected data image, each data pixel of the arranged data corresponding to P1×P2 image pixels of the detected data image. Thereafter, a resized pixel detector finds a resized vertical length V and a resized horizontal length H of the detected data image. Finally, a sampling unit extracts image pixels at different intervals depending on whether the horizontal length and/or the vertical length of the detected data image is increased or decreased.

Abstract: In an apparatus for detecting holographic data reproduced from a holographic medium, the holographic medium has an interference pattern and the holographic data is reproduced when a first portion of a reference beam is diffracted by the interference pattern within the holographic medium. A transmission beam detector detects a light intensity of a transmission beam which is a second portion of the reference beam, wherein the transmission beam is not diffracted to reproduce the holographic data and passes through the holographic medium. Then, a CCD (charge coupled device) controller generates a driving signal in accordance with the detected light intensity. Thereafter, a CCD detects the holographic data in response to the driving signal.

Abstract: The present invention provides a method and apparatus for preprocessing a page image reproduced from a storage medium in a holographic system. The present invention calculates pixel sums for each lines in the page image to select a maximum sum, calculates a modified maximum sum using the modified maximum sum and its neighboring sums, determines a compensation location for distorted pixels using the modified maximum sum and performs over-sampling a data image with reference to the compensation location of magnified pixels, to thereby compensate the data image with high precision in sub-pixels.

Abstract: In an apparatus for processing holographic data reproduced from a holographic medium, a data arranging unit arranges input data in a form of M1×M2 data pixels on a page basis to thereby generate arranged data. Then, a holographic data detector outputs a page image including a detected data image, each data pixel of the arranged data corresponding to P1×P2 image pixels of the detected data image. Thereafter, a resized pixel detector finds a resized vertical length V and a resized horizontal length H of the detected data image. Finally, a sampling unit extracts image pixels at different intervals depending on whether the horizontal length and/or the vertical length of the detected data image is increased or decreased.

Abstract: In a holographic digital data storage system, holographic page data has at least two concentric patterns with the optical information arranged within an outermost pattern of at least two concentric patterns. Since at least two concentric patterns in the holographic page data are deformed into at least two elliptic patterns in the diffracted beam caused by irradiation of the reference beam, at least two elliptic patterns are extracted from the diffracted beam and then at least two elliptic patterns are estimated to generate at least two estimated concentric patterns. A compensated vector between said at least two elliptic patterns and said at least two estimated concentric patterns is used to reconstruct the optical information from the diffracted beam.

Abstract: In an apparatus for detecting holographic data reproduced from a holographic medium, the holographic medium has an interference pattern and the holographic data is reproduced when a first portion of a reference beam is diffracted by the interference pattern within the holographic medium. A transmission beam detector detects a light intensity of a transmission beam which is a second portion of the reference beam, wherein the transmission beam is not diffracted to reproduce the holographic data and passes through the holographic medium. Then, a CCD (charge coupled device) controller generates a driving signal in accordance with the detected light intensity. Thereafter, a CCD detects the holographic data in response to the driving signal.

Abstract: A method for correcting an error in N:N+1 channel codes categorizes 2N+1 codeword (N+1)-tuples into M subsets of codeword (N+1)-tuples, wherein each subset G has NG codeword (N+1)-tuples and the total number of codeword (N+1)-tuples in the M subsets is 2N and wherein each subset G has a predetermined number KG of lower bits and a predetermined number (N+1−KG) of higher bits and the number of lower bits in every codeword (N+1)-tuple in any subset is not equivalent to that of lower bits in every codeword (N+1)-tuple in any other subset. The 2N message N-tuples are mapped with said 2N codeword (N+1)-tuples in the M subsets, respectively, in one-to-one correspondence to generate a lookup table.

Abstract: In a holographic digital data storage system, holographic page data has at least two concentric patterns with the optical information arranged within an outermost pattern of at least two concentric patterns. Since at least two concentric patterns in the holographic page data are deformed into at least two elliptic patterns in the diffracted beam caused by irradiation of the reference beam, at least two elliptic patterns are extracted from the diffracted beam and then at least two elliptic patterns are estimated to generate at least two estimated concentric patterns. A compensated vector between said at least two elliptic patterns and said at least two estimated concentric patterns is used to reconstruct the optical information from the diffracted beam.