Abstract: An image processing device includes: a light emitting unit that emits a near-infrared ray to a target; a light emission controlling unit that controls a light emission amount of the light emitting unit on a basis of a distance value between the target and the light emitting unit; and a detecting unit that detects a feature point on the basis of a captured image of the target irradiated with the near-infrared ray.

Abstract: An information processing apparatus includes: an acquisition unit that performs face detection on the basis of a captured image and acquires face detection information including face frame information and viewpoint position information on the basis of a face detection result; a reference point calculation unit that calculates a reference point in a face frame indicated by the face frame information; and a correction unit that corrects the viewpoint position information according to a movement amount of the reference point.

Abstract: A signal processing apparatus includes a lower-level region data detecting section detecting, in luminance data of an input video signal, luminance data corresponding to a value in a set lower-level region, and a data converting section converting a value of the luminance data corresponding to the lower-level region to a set conversion value.

Abstract: A signal processing apparatus according to an embodiment of the present invention includes: a compression processing unit that performs compression processing on n-bit data; a bit-number conversion unit that converts m-bit input image data into n-bit data (where n<m) by performing round-up or round-down processes on the lower (m?n) bits of the m-bit input image data, and feeds the obtained n-bit data to the compression processing unit; and a conversion processing control unit that selects either one of the round-up process and the round-down process to be performed on each datum of the n-bit data in accordance with a predefined rule on the basis of the position of a frame to which the datum belongs and the position in the frame at which the datum is located, and instructs the bit-number conversion unit to perform the selected round-up process or round-down process.

Abstract: An image processing system includes a division unit adapted to divide encoding target data into divided data, a distributed encoding unit adapted to encode the divided data into distributed encode data and generate decode information file including time information, a generation unit adapted to generate decode image information on the basis of specification information including time information and the decode information file, and a decoding unit adapted to decode the distributed encode data on the basis of the decode image information and output decode data corresponding to the specification information.

Abstract: An information management method for managing whether to allow playback of copyrighted content includes an invalidating step, executed by playback management means when an invalidating request for content recorded on a recording medium is received, of registering the content in playback-management information as being in a playback-prohibition state; a playback processing step, executed by playback controlling means when a playback request for content on the recording medium is received, of permitting playback only when the content is not in the playback-prohibition state with reference to the playback-management information; and an invalidation canceling step, executed by the playback controlling means when playback-permission information associated with content in the playback-prohibition state is obtained, of updating the playback-management information so that the playback-prohibition state of the content is canceled.

Abstract: A signal processing apparatus according to an embodiment of the present invention includes: a compression processing unit that performs compression processing on n-bit data; a bit-number conversion unit that converts m-bit input image data into n-bit data (where n<m) by performing round-up or round-down processes on the lower (m?n) bits of the m-bit input image data, and feeds the obtained n-bit data to the compression processing unit; and a conversion processing control unit that selects either one of the round-up process and the round-down process to be performed on each datum of the n-bit data in accordance with a predefined rule on the basis of the position of a frame to which the datum belongs and the position in the frame at which the datum is located, and instructs the bit-number conversion unit to perform the selected round-up process or round-down process.

Abstract: A signal processing apparatus includes a lower-level region data detecting section detecting, in luminance data of an input video signal, luminance data corresponding to a value in a set lower-level region, and a data converting section converting a value of the luminance data corresponding to the lower-level region to a set conversion value.

Abstract: An apparatus for recording additional information hard to analyze in an information recording medium, a reproducer, a recording medium, a method, and a computer program for the same are provided. Bit values set at a plurality of DC control bit information setting positions set in a recording frame are decided based on constituent bit information of additional data, and additional data such as key information used for decoding contents is recorded in the information recording medium. In the reproducer, the additional data constituent bit information can be acquired by detecting the bit position set at a selected DC control bit storage position in the additional data-associated recording frame. With the configuration, it is possible to embed additional information such as key information used for decoding contents, key production information, contents reproduction control information, and copying control information with a format hard to analyze and also to accurately read out for data reproduction.

Abstract: An information processing apparatus includes: a data capturing unit controlling a recording medium containing video data and capturing encoding target data; a characteristic extraction unit receiving the encoding target data and extracting a characteristic point, at least including a dividable point, of the encoding target data as a preprocess for encoding; a storage unit storing the encoding target data; a memory unit storing information about the characteristic point extracted by the characteristic extraction unit; a dividing unit dividing the encoding target data into predetermined pieces of divided data; and encoding units encoding the divided data into divided encoded data. The dividing unit determines a dividing point, at which the encoding target data are substantially equally allocatable to the encoding units, on the basis of the total number of the encoding units and the information about the characteristic point, and then allocates the divided data to the encoding units.

Abstract: An image processing system includes a division unit adapted to divide encoding target data into divided data, a distributed encoding unit adapted to encode the divided data into distributed encode data and generate decode information file including time information, a generation unit adapted to generate decode image information on the basis of specification information including time information and the decode information file, and a decoding unit adapted to decode the distributed encode data on the basis of the decode image information and output decode data corresponding to the specification information.

Abstract: A variable-length block encryption circuit having a simplified structure and that reduces the load on a host computer. A plaintext memory and an encryption/decryption circuit for encrypting or decrypting original data in blocks. The original data is transferred to the plaintext memory from the exterior. The transferred original data is supplied to the encryption/decryption circuit and is subjected to encryption or decryption in blocks. The result data is substituted for the original data in the plaintext memory. When all transferred original data is substituted, the result data is externally output.

Abstract: In an information recording processor, component bits of additional data to be recorded on an information recording medium are stored in specific user control data. Pointer information representing row and column numbers used as identification information of the user control data is set as the values of DC control bits in a user-control-data-pointer-information-set recording frame selected from recording data. In an information playback processor, from the DC control bits in the recording frame, the row and column numbers of the user control data are acquired. The user control data is acquired and the additional data is acquired.

Abstract: A block cipher method eliminates the overhead associated with key scheduling, decreases the required time for encryption or decryption, and increases the total throughput. A key scheduling circuit (12) for generating round key data from key data for the encryption or the decryption and a bank memory (13) for storing the round key data generated by the key scheduling circuit (12) at a predetermined bank of the bank memory are provided. An encrypting/decrypting circuit (11) is provided for encrypting plaintext data or decrypting ciphertext data upon receipt of the round key data stored in the bank and a block of the plaintext data or the ciphertext data one by one. The output of the encryption or the decryption is retrieved from the encrypting/decrypting circuit (11).

Abstract: A display control apparatus includes: an input means for inputting an image of a compression target; a comparing means for comparing an input image inputted from the input means with a decompressed image that is obtained by decompressing a compressed image obtained by compressing the input image; an image processing means for changing a pixel value of a predetermined pixel of the decompressed image to a predetermined value based on a compared result by the comparing means; and a display means for displaying the decompressed image in which a pixel value is changed by the image processing means.

Abstract: In a signal processing apparatus, when a luminance signal in a first numeric range is assigned to an integer value in a second range narrower than a first range representable by predetermined bits, and a luminance signal and color-difference signals are outputted under a predetermined standard in which a color-difference signal in a second numeric range is assigned to an integer value in a third range narrower than the first range, the luminance signal in the first numeric range is assigned to an integer value in a fourth range between the first and second ranges; the color-difference signal in the second numeric range is assigned to an integer value in a fifth range between the first and third ranges; and the fourth range is adjusted in a range between the first range and second range, and the fifth range is adjusted in a range between the first and third ranges.

Abstract: A device, a medium, and a method for recording and reproducing additional data difficult to analyze on an information recording medium are provided. When additional data is recorded onto the information recording medium, or additional data such for example as key information applied to a content decryption process, key generating information, content reproduction control information, or copy control information is recorded on the information recording medium, the parity of data of a recording frame in which to insert the additional data is calculated, and the value of a DC control bit in the frame in which to store the additional data is determined and set on the basis of information indicating whether the parity is even parity or odd parity and the bit value information [0] or [1] of the additional data. At a time of reproduction, the constituent bit [0] or [1] of the additional data is obtained by only detecting the parity of the recording frame.

Abstract: An apparatus for recording additional information hard to analyze in an information recording medium, a reproducer, a recording medium, a method, and a computer program for the same are provided. Bit values set at a plurality of DC control bit information setting positions set in a recording frame are decided based on constituent bit information of additional data, and additional data such as key information used for decoding contents is recorded in the information recording medium. In the reproducer, the additional data constituent bit information can be acquired by detecting the bit position set at a selected DC control bit storage position in the additional data-associated recording frame. With the configuration, it is possible to embed additional information such as key information used for decoding contents, key production information, contents reproduction control information, and copying control information with a format hard to analyze and also to accurately read out for data reproduction.

Abstract: A device, a medium, and a method for recording and reproducing additional data difficult to analyze on an information recording medium are provided. When additional data is recorded onto the information recording medium, or additional data such for example as key information applied to a content decryption process, content reproduction control information, or copy control information is recorded on the information recording medium, the parity of a data-changeable data unit, for example user control data (UCD) is set to even parity or odd parity by controlling constituent bits of the user control data according to constituent bit information [0] or [1] of the additional data and according to whether the parity of a specific additional data-corresponding recording frame selected is even parity or odd parity.

Abstract: An information management method for managing whether to allow playback of copyrighted content includes an invalidating step, executed by playback management means when an invalidating request for content recorded on a recording medium is received, of registering the content in playback-management information as being in a playback-prohibition state; a playback processing step, executed by playback controlling means when a playback request for content on the recording medium is received, of permitting playback only when the content is not in the playback-prohibition state with reference to the playback-management information; and an invalidation canceling step, executed by the playback controlling means when playback-permission information associated with content in the playback-prohibition state is obtained, of updating the playback-management information so that the playback-prohibition state of the content is canceled.