Abstract: A storage device includes a tamper-resistant module and a flash memory. In correspondence with a command, a CPU inside the tamper-resistant module judges the security of data received from the outside, then recording the data as follows: High-security and small-capacity data is recorded into a memory inside the tamper-resistant module. High-security and large-capacity data is encrypted, then being recorded into the flash memory. Low-security data is recorded as it is into the flash memory. This recording method permits large-capacity data to be stored while ensuring a security (i.e., a security level) corresponding thereto.

Abstract: A magnetic disk apparatus includes a requesting unit for requesting the magnetic disk apparatus to re-set a value of specification information capable of determining performance of the magnetic disk apparatus in combination with either identification result or flag information; a performance unit for causing the magnetic disk apparatus which receives the request to re-set the own specification; a detecting unit for detecting an internal condition of the disk apparatus; a processing unit for processing the detection result; a conversion unit for converting the internal condition of the magnetic disk apparatus into states of a numeral value, a figure, a color, and a sound in combination with the process result, and for notifying the converted condition to a user; and a battery.

Abstract: A signal processing device for analog-to-digital converting a burst signal has a feature of selecting a data bus to notify a disk control device of a conversion result via an NRZ data bus. The disk control device stores the result of the analog-to-digital conversion of the servo positional signal. The positional signal of a head of the disk device is digitalized in a R/W channel. Sampling for digital conversion is performed in only a window which is defined only in the vicinity of peaks of the positional signal. The values of peaks which are obtained by sampling are averaged by an averaging circuit. This enables the influence of noise occurred outside of the window to be eliminated. Although the noise in the window is sampled, its adverse influence is suppressed by the averaging processing.

Abstract: In an apparatus for recording continuous information of sound or the like, when a disk device generating a seek sound is used as recording means, such state is prevented that seek sound is mixed as noise and is recorded. In an input processing system of an audio signal in an apparatus for performing sound recording to storage means generating seek noise of the disk or the like, cut-off period 203 is provided by the period when the seek noise 201 is generated, and mixing of the seek noise 201 in the audio signal is prevented, and at the same time, the audio signal during the cut-off period 203 is interpolated by other means or the seek noise level previously set is subtracted.

Abstract: A magnetic disk recording and reproducing apparatus comprising a unit for inserting an error correcting code related to control information into said control information on data; a recording control unit for recording in a plurality of sectors formed by dividing the recording area of a magnetic disk, each sector having an ID area for recording said control information and a data area, provided adjacent to and behind said ID area, for recording said data; and a error correcting unit for correcting said control information of said ID area by said error correcting code before data is read from said data area corresponding to said ID area or data is recorded in said data area corresponding to said ID area.

Abstract: A magnetic disc apparatus is a parallel recording type magnetic storage apparatus employing a dedicated servo system, wherein one of a plurality of data recording surfaces is used as a servo surface, the remaining even surfaces are used as ordinary recording surfaces, and the remaining one recording surface is used as a data recording surface which serves as a spare track or a spare sector when a defective track or a defective sector occurs. Since a microprocessor recognizes a defective track or a defective sector before writing data, if a defective track or a defective sector is produced, a normal track or sector is coupled with a spare track or a spare sector when a defective track or a defective sector is produced, and thereafter data is written into the magnetic storage apparatus.

Abstract: A magnetic disk apparatus has: a magnetic disk having a magnetic film formed on a substrate; a spindle motor for rotating the magnetic disk; a magnetic head for writing/reading information on/from the magnetic disk; a supporting member for supporting the magnetic head; a driving mechanism for moving the magnetic head to a predetermined position on the magnetic disk; a magnetic writing/reading circuit for enabling the magnetic head to write/read information on/from the magnetic disk; an interface for sending/receiving signals for controlling the information to/from another information processing device, a device for detecting whether or not the magnetic disk apparatus is in operation; and mechanism for latching movable part of the magnetic disk apparatus on the basis of detection result of the detecting device.

Abstract: A magnetic disk recording and reproducing apparatus comprising a unit for inserting an error correcting code related to control information into said control information on data; a recording control unit for recording in a plurality of sectors formed by dividing the recording area of a magnetic disk, each sector having an ID area for recording said control information and a data area, provided adjacent to and behind said ID area, for recording said data; and a error correcting unit for correcting said control information of said ID area by said error correcting code before data is read from said data area corresponding to said ID area or data is recorded in said data area corresponding to said ID area.

Abstract: A license hub including a hub apparatus to which one or more apparatus and devices can be electrically connected, and a safe storage device for storing therein keys used to decode the encrypted contents data is added to the existing system to construct a license network. A controller of the license network acquires the information of various kinds of apparatuses and devices which are electrically connected to the license hub, and determines automatically the apparatus and/or the device suitable for executing the processing when carrying out the playback of contents or movement of the key to execute these processings.

Abstract: A disk storage device includes a data transfer control device for transferring data from a higher rank device to a storage medium and transferring data from the storage medium to the higher rank device, an identification device having identification information for determining whether it should be permitted or inhibited to write data into a predetermined recording area of the storage medium, and a data transfer command device, responsive to a data recording command given by the higher rank device, to order the data transfer control device to write data into the storage medium according to the identification information of the identification device. In response to a data write command given to the storage medium by the higher rank device, the data transfer command device collates a state of the data write command with the identification information possessed by a predetermined sector of the storage medium.

Abstract: A data processing method of recording data on a recording medium mounted on an information recording apparatus. The data processing method includes the steps of dividing, in a disk controller, parallel data constituted by p bits transferred from a high-rank device into data each having q bits, where p and q are numbers; transferring the data each having q bits from the disk controller to an encoder as parallel data constituted by q bits; encoding, in the encoder, the data each having q bits to generate recording signals corresponding to data to be recorded; and recording the recording signals on the recording medium, thereby recording the data to be recorded on the recording medium.

Abstract: A recording apparatus includes a plurality of ECC units operating selectively and independently. A medium access unit reads data from a recording medium in a read mode, and writes data from a host device to the recording medium in a write mode. The data read out from the recording medium contains a reproduction data and a medium reproduction check symbol added to the reproduction data, and data written contains a recording data and a medium recording check symbol added to the recording data. The reproduction data or the recording data is stored in a buffer. In a read mode, the reproduction data from the medium access unit is transferred to the host device through the buffer and in the write mode, the recording data from the host device is transferred to the medium access unit through the buffer.

Abstract: A disk type recording and reproducing apparatus includes a disk type recording medium having a plurality of tracks and having stored on each of the plurality of tracks a position signal indicating positions on the tracks; a drive section for rotating the disk type recording medium; a dual head separately incorporating a reading head for reading from the disk type recording medium and a writing head for writing into the disk type recording medium; a head drive section for moving the dual head; means for controlling the head drive section by a controlled variable in compliance with a position signal read from the disk type recording medium using an object track and the reading head; and memory means for storing quantity information used to correct the controlled variable of the means for controlling the head drive section.

Abstract: A signal processing device having a feature of analog-to-digital converting a burst signal has a feature of selecting a data bus to notify a disk control device of a conversion result via an NRZ data bus. The disk control device stores the result of the analog-to-digital conversion of the servo positional signal. The positional signal of a head of the disk device is digitalizes in a R/W channel. Sampling for digital conversion is performed in only a window which is defined only in the vicinity of peaks of the positional signal. The values of peaks which are obtained by sampling are averaged by an averaging circuit. This enables the influence of noise occurred outside of the window to be eliminated. Although the noise in the window is sampled, its adverse influence is suppressed by the averaging processing.

Abstract: A computer is coupled via a bus to a peripheral device. The peripheral device includes an I/O device portion placed on a single microchip coupled to a process device portion. The I/O device portion includes a physical layer in communication with the computer, and a data channel processor in communication with peripheral device. A single oscillator controls the speed of both of these components, and each component includes a dedicated frequency divider. The process device portion may be hardware, software or hardware and software, and may be implemented on a single chip or on multiple chips. To reduce pin count, interface controllers may be used to communicate between the I/O device portion and the process device portion across a single channel.

Abstract: A disc storage apparatus includes at least one disc having at least one recording surface, a disc control unit for receiving a first number of write data, and outputting, through a plurality of lines, a second number of write data selected from the first number of write data, where the first number of write data and the second number of write data are each at least two write data, an encoder circuit coupled to the disc control unit through the plurality of lines for receiving the second number of write data from the disc control unit through the plurality of lines, encoding the second number of write data in parallel to produce coded data, and outputting the coded data for recording on the at least one recording surface, and a microprocessor for designating the second number of write data to be selected from the first number of write data, outputted by the disc control unit through the plurality of lines, and received by the encoder circuit from the disc control unit through the plurality of lines.

Abstract: A disk type recording and reproducing apparatus includes a disk type recording medium, and a dual head including a reading head and a writing head. A center of the core of the reading head is shifted in the radial direction of the disk type recording medium relative to a center of the core of the writing head. The disk type recording medium has a plurality of recording tracks each having a plurality of sectors. Each of the sectors has an ID division provided ahead of a data division disposed in the circumferential direction of the disk type recording medium. The ID division has recorded therein identification information identifying the sector. A center line of the ID division is shifted in the radial direction of the disk type recording medium relative to a center line of the data division by a distance equal to a distance by which the center of the core of the reading head is shifted in the radial direction of the disk type recording medium relative to the center of the core of the writing head.

Abstract: A disc storage apparatus includes a disc having at least one recording surface, a head associated with the recording surface for recording data on the recording surface during a data write operation, and for reproducing data from the recording surface during a data read operation, a disc control unit for receiving data and outputting parallel data during the data write operation, and for receiving parallel data and outputting data during the data read operation, and an encoder/decoder circuit for receiving the parallel data from the disc control unit and outputting data to the head to be recorded on the recording surface during the data write operation, and for receiving from the head data reproduced from the recording surface and outputting parallel data to the disc control unit during the data read operation.

Abstract: A magnetic disk recording and reproducing apparatus including a unit for inserting an error correcting code relating to control information in the control information, the control information relating to data, a recording control unit for recording the control information and the data in a recording area of a magnetic disk, the recording area having a plurality of sectors, each of the sectors having an ID area for recording the control information and a data area for recording the data, the data area corresponding to the ID area and being provided adjacent to and behind the ID area in the same sector as the ID area, and an error correcting unit for correcting errors in the control information in the ID area using the error correcting code before the data in the data area corresponding to the ID area and provided in the same sector as the ID area is read or recorded.

Abstract: A recording apparatus includes a plurality of ECC units operating selectively and independently. A medium access unit reads data from a recording medium in a read mode, and writes data from a host device to the recording medium in a write mode. The data read out from the recording medium contains a reproduction data and a medium reproduction check symbol added to the reproduction data, and data written contains a recording data and a medium recording check symbol added to the recording data. The reproduction data or the recording data is stored in a buffer. In a read mode, the reproduction data from the medium access unit is transferred to the host device through the buffer and in the write mode, the recording data from the host device is transferred to the medium access unit through the buffer.