Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: The storage system includes a plurality of disk drives; a plurality of disk array controllers, each disk array controller controlling Redundant Array of Independent Disks (RAID) processes on said disk drives; and a plurality of switches external of said disk array controllers. The switches are coupled to the disk array controllers and to the disk drives, whereby each of the disk drives is coupled to each of the disk array controllers via the switches. Connections between disk array controllers and disk drives can be made independently via the switches.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A printing apparatus includes a data receiver that receives command data from a host device and a memory that stores the command data received by the data receiver. A printer controller reads out the command data stored in the memory in a first-in-first-out order and controls the printing apparatus in accordance with the command data. A command detector is provided to detect predetermined command data within the command data received by the data receiver without storing the command data in the memory or while or before command data is stored in the memory. An off-line recovery controller enables the printing apparatus to recover from an off-line state in accordance with the predetermined command data detected by the command detector.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: An interface device for a printer, a control method for the interface device, and a data storage medium for storing the control method. The receiver part of the interface device receives data sent by a host computer, and the transmitter part of the interface device sends received data to the printer through the printer expansion slot to which the interface device is installed. A detector detects whether the printer can receive data. Memory stores received data when the detector determines that the printer cannot receive data. A real-time command transmission controller assures that real-time commands are sent to the printer even when the printer cannot receive other data because the receive buffer is full, for example.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A protocol controller disposed between switches in a fiber channel fabric switch circuit and disk drive units for converting a protocol to enable one-to-one connectivity established between controllers and disk drive units.

Abstract: A printing apparatus for storing total operation counters for individual consumable and nonconsumable parts of a printing apparatus. A nonvolatile storage retains stored count information even when power is not supplied to the printing apparatus. An operations counter counts a value indicative of a printing apparatus operation. A counter storage stores a historical counter indicative of the printing apparatus operation history to the nonvolatile storage means based on a value counted by the operations counter, and stores a total printing apparatus operations count to the storage means. Specific printer operations, such as the number of characters printed, distance of recording medium transportation, and the number of times the automatic paper cutter is operated, can thus be individually accumulated, and the historical counts, that is, the cumulative counts since the printer was first used, can be stored to memory.

Abstract: A printing apparatus includes a data receiver that receives command data from a host device and a memory that stores the command data received by the data receiver. A printer controller reads out the command data stored in the memory in a first-in-first-out order and controls the printing apparatus in accordance with the command data. A command detector is provided to detect predetermined command data within the command data received by the data receiver without storing the command data in the memory or while or before command data is stored in the memory. An off-line recovery controller enables the printing apparatus to recover from an off-line state in accordance with the predetermined command data detected by the command detector.

Abstract: A printer and control method for printing to various types of recording media store printing modes appropriate to those various types of recording media in a mode/media memory section. When a particular printing mode is selected while a particular type of recording media is selected, the correlation between that printing mode an recording media is stored. Whenever that type of recording media is subsequently selected for printing, the corresponding printing mode is automatically selected from memory to control the printing operation. It is therefore possible to select what printing mode is used with what recording media, and thereafter automatically select, by simply selecting the type of recording media, the printing mode that is most appropriate to the type of recording media, the thickness of the media, and other particular media specifications. Printing appropriate to the type of recording media is then possible by simply selecting the type of recording media used.