摘要:
During a read-after-write operation on magnetic tape, a first SCO is formed which includes two encoded processed user data units and is one of T SCOs in a first SCO set. The user data units are each one of T user data units in first and second user data unit sets, respectively, within the first SCO set. The first SCO set is written to the magnetic tape and is immediately read. When an error is detected in one of the user data units, a second SCO is formed to include the first user data unit and, only if an error is not detected in a user data unit in the other user data unit set, to not include the other user data unit, the second SCO being one of T SCOs in a second SCO set. Then, the second SCO set is rewritten to a later position on the tape later.
摘要:
A method for decoding encoded data comprising integrated data and header protection is disclosed herein. In one embodiment, such a method includes receiving an extended data array. The extended data array includes a data array organized into rows and columns, headers appended to the rows of the data array, column ECC parity protecting the columns of the data array, and row ECC parity protecting the rows and headers combined. The method then decodes the extended data array. Among other operations, this decoding step includes checking the header associated with each row to determine whether the header is legal. If the header is legal, the method determines the contribution of the header to the corresponding row ECC parity. The method then reverses the contribution of the header to the corresponding row ECC parity. A corresponding apparatus (i.e., a tape drive configured to implement the above-described method) is also disclosed herein.
摘要:
A method for efficiently rewriting data to tape is disclosed herein. In one embodiment, such a method includes writing a data set to tape, the data set comprising S sub data sets of fixed size, each sub data set comprising N code word interleaves (CWIs). The method further includes reading the data set while writing it to the tape to identify faulty CWIs. While reading the data set, the method buffers the faulty CWIs (such as by storing, identifying, and/or marking the faulty CWIs) for later retrieval. When the end of the data set is reached, the method writes corrected versions of the faulty CWIs to the end of the data set. A corresponding apparatus is also disclosed and claimed herein.
摘要:
Methods, logic, apparatus and computer program product write data, comprising less than a full Data Set, to magnetic tape. Data is received from a host, a do-not-interleave command is issued and C1 and C2 ECC are computed. Codeword Quad (CQ) sets are then formed. At least one CQ set of the Data Set is written to a magnetic tape in a non-interleaved manner and a Data Set Information Table (DSIT) is written to the magnetic tape immediately following the at least one written CQ set. An address transformation may be used to cancel interleaving. Writing a CQ set may include writing a plurality of contiguous instances of the CQ set to the magnetic tape to maintain the effectiveness of ECC capability.
摘要:
Finish of a composite image generated from an image and characters can be confirmed by enlarging the characters alone and without enlarging a copyrighted image such as a cartoon character. In order to generate the composite image, the characters are input from a user terminal according to a template. In a printing service apparatus, image data of the composite image are generated and sent to the user terminal. By an instruction from the user terminal, enlargement data are generated for enlarging the characters alone and sent to the user terminal.
摘要:
An unencoded m-bit data input sequence is divided into a block of n bits and a block of m-n bits. The block of n bits is divided into a first set of n+1 encoded bits, wherein at least one of P1 subblocks of the first set satisfies a G, M and I constraints. The first set of n+1 encoded bits is mapped into a second set of n+1 encoded bits wherein at least one of P2 subblocks of the second set gives rise to at least Q1 transitions after 1/(1+D2) precoding. A second set of n+1 encoded bits is divided into P3 encoded subblocks and the P3 encoded subblocks are interleaved among (m−n)/s unencoded symbols so as to form a (m+1)-bit output sequence codeword which is then stored on a data storage medium.
摘要:
A first semiconductor chip includes a fixed electrode formed on a first semiconductor substrate and a plurality of first metal spacers formed on a first interlayer dielectric. A second semiconductor chip includes a vibrating electrode formed on a second semiconductor substrate and a plurality of second metal spacers formed on a second interlayer dielectric. The first and second semiconductor chips are metallically bonded to each other using the first and second metal spacers. An air gap is formed in a region of the condenser microphone located between the first semiconductor chip and the second semiconductor chip except bonded regions of the first and second metal spacers.
摘要:
A non-aqueous electrolyte secondary battery comprising: a positive electrode plate including an outer jacket comprising a sheet-shaped positive electrode current collector and a positive electrode active material layer formed on an inner surface of the outer jacket except for a peripheral portion thereof; a negative electrode plate including an outer jacket comprising a sheet-shaped negative electrode current collector and a negative electrode active material layer formed on an inner surface of the outer jacket except for a peripheral portion thereof; a separator layer comprising a polymer electrolyte interposed between the positive electrode active material layer and the negative electrode active material layer, wherein the peripheral portion of the positive electrode current collector and the peripheral portion of the negative electrode current collector are bonded together, with an insulating material interposed therebetween.
摘要:
An on-screen display device that can effectively utilize a video RAM area. This on-screen display device includes a video RAM that holds character data of desired characters that are to be displayed; a display character setting unit for locating the number of bits as many as the remainder that is obtained by dividing character data corresponding to one character by the number of bits that can be read at one-time access from the video RAM, collectively by one line in the video RAM; buffers for storing a part of character data of the respective characters; a character generator ROM for outputting font data corresponding to the character codes; and a display control unit for reading character data from the video RAM via the buffers at the display of the characters, and reading the font data that are created by the character generator ROM, thereby outputting an on-screen output signal.
摘要:
An on-screen display device that can effectively utilize a video RAM area. This on-screen display device includes a video RAM that holds character data of desired characters that are to be displayed; a display character setting unit for locating the number of bits as many as the remainder that is obtained by dividing character data corresponding to one character by the number of bits that can be read at one-time access from the video RAM, collectively by one line in the video RAM; buffers for storing a part of character data of the respective characters; a character generator ROM for outputting font data corresponding to the character codes; and a display control unit for reading character data from the video RAM via the buffers at the display of the characters, and reading the font data that are created by the character generator ROM, thereby outputting an on-screen output signal.