Abstract: A controller in a storage system has chunk statistical information to be information including an overlap prevention effect value of each stored chunk data. For each storage target chunk data to be each chunk data obtained by dividing a data block of a storage target, the controller executes an overlap search to search the stored chunk data matched with the storage target chunk data in an overlap search range to be a part of a plurality of stored chunk data shown by the chunk statistical information and a chunk data group specified from the chunk statistical information and stores the storage target chunk data in the storage device, when the matched stored chunk data is not discovered in the overlap search.

Abstract: A controller in a storage system has chunk statistical information to be information including an overlap prevention effect value of each stored chunk data. For each storage target chunk data to be each chunk data obtained by dividing a data block of a storage target, the controller executes an overlap search to search the stored chunk data matched with the storage target chunk data in an overlap search range to be a part of a plurality of stored chunk data shown by the chunk statistical information and a chunk data group specified from the chunk statistical information and stores the storage target chunk data in the storage device, when the matched stored chunk data is not discovered in the overlap search.

Abstract: An optimum chunk cutout method is selected according to the type of content. A storage apparatus is a storage apparatus for storing content in a backup volume in response to a content storage request from a host system connected to the storage apparatus via a network and includes a chunk cutout unit for cutting out the content into one or more chunks and a duplication judgment unit for managing a duplicate state of the chunk or chunks which have been cut out by the chunk cutout unit; wherein the chunk cutout unit selects a method for cutting out the chunk based on content type identification information indicating a type of the content.

Abstract: A data management system respectively computes first hash values while sliding a window a prescribed amount at a time with respect to a prescribed range from a start location of a data block to a prescribed size. The system extracts, from among the first hash values, a first hash value, which is equivalent to a characteristic value, and partitions the data block into a first chunk of data at a location corresponding to this first hash value. The system determines coincidence between a first chunk of data and a stored second chunk of data, and prevents duplicate data from being stored twice.

Abstract: An audio information processing apparatus for processing input audio information is adapted to input an audio signal composed of front area audio information that should be input to a front speaker and rear area audio information that should be input to a plurality of speakers. A mixer is adapted to mix the rear area audio information in accordance with an instruction from an instruction circuit.

Abstract: An optimum chunk cutout method is selected according to the type of content. A storage apparatus is a storage apparatus for storing content in a backup volume in response to a content storage request from a host system connected to the storage apparatus via a network and includes a chunk cutout unit for cutting out the content into one or more chunks and a duplication judgment unit for managing a duplicate state of the chunk or chunks which have been cut out by the chunk cutout unit; wherein the chunk cutout unit selects a method for cutting out the chunk based on content type identification information indicating a type of the content.

Abstract: The de-duplication effect is enhanced even when managing data blocks by dividing them into fixed-length data. Every time a data block is entered, a controller for managing data blocks: sequentially sets a search area of a fixed size from a top of each data block to an end thereof; calculates a first hash value of data belonging to each search area; allocates a search area(s), for which the first hash value becomes a first set value, to a first chunk from among each of the search areas; allocates a search area(s), for which the first hash value is a minimum value, to a second chunk from among the search areas existing in an area larger than the search area if the area larger than the search area exists in an area other than the area to which the first chunk is allocated; allocates an area(s) smaller than the search area to a third chunk; calculates a second hash value from data of each chunk; and manages chunks having the same second hash value, as de-duplication chunks.

Abstract: A data management system respectively computes first hash values while sliding a window a prescribed amount at a time with respect to a prescribed range from a start location of a data block to a prescribed size. The system extracts, from among the first hash values, a first hash value, which is equivalent to a characteristic value, and partitions the data block into a first chunk of data at a location corresponding to this first hash value. The system determines coincidence between a first chunk of data and a stored second chunk of data, and prevents duplicate data from being stored twice.

Abstract: An audio information processing apparatus for processing input audio information is adapted to input an audio signal composed of front area audio information that should be input to a front speaker and rear area audio information that should be input to a plurality of speakers. A mixer is adapted to mix the rear area audio information in accordance with an instruction from an instruction circuit.

Abstract: There are provided an image processing apparatus and its method, in which a first image signal and a second image signal whose resolution is higher than that of the first image signal is selectively inputted, a low frequency component and a high frequency component are separated from the second image signal, the first image signal or an image signal of the separated low frequency component is encoded, and an image signal of the separated high frequency component is encoded.

Abstract: There is disclosed an image pickup apparatus which outputs moving image information, obtained with an image pickup device of progressive scanning type, as video signals of two channels, compresses the amount of information of the video signals of the two channels with compressing units of two channels, and transmits the compressed video signals of two channels to a peripheral device in the compressed state.

Abstract: The amount of information in input digital image data is compressed at a first compression ratio and at a second compression ratio which is lower than the first compression ratio and recorded. When a still image is recorded, a still image having a high resolution can be recorded by compressing the digital image data at the second compression ratio and recording it.

Abstract: There is provided an image processing apparatus which comprises an inputting part for inputting an image signal, an attenuating part for attenuating a predetermined frequency portion of the image signal inputted by the inputting part, and a controlling part for controlling an attenuation characteristic of the attenuating part for attenuating the predetermined frequency portion, in accordance with a compression ratio of the image signal inputted by the inputting part. There is also provided an image processing apparatus which comprises an inputting part for inputting an image signal, an enhancing part for enhancing a high frequency band of the image signal inputted by the inputting part, and a controlling part for controlling a high-frequency-band enhancement characteristic of the enhancing part in accordance with a compression ratio of the image signal inputted by the inputting part.

Abstract: The amount of information in input digital image data is compressed at a first compression ratio and at a second compression ratio which is lower than the first compression ratio and recorded. When a still image is recorded, a still image having a high resolution can be recorded by compressing the digital image data at the second compression ratio and recording it.

Abstract: There is provided an image processing apparatus which comprises an inputting part for inputting an image signal, an attenuating part for attenuating a predetermined frequency portion of the image signal inputted by the inputting part, and a controlling part for controlling an attenuation characteristic of the attenuating part for attenuating the predetermined frequency portion, in accordance with a compression ratio of the image signal inputted by the inputting part. There is also provided an image processing apparatus which comprises an inputting part for inputting an image signal, an enhancing part for enhancing a high frequency band of the image signal inputted by the inputting part, and a controlling part for controlling a high-frequency-band enhancement characteristic of the enhancing part in accordance with a compression ratio of the image signal inputted by the inputting part.