Abstract:
PROBLEM TO BE SOLVED: To provide a system having the minimum interference, which increases the transmission capacity by minimizing interruption and transmission delay. SOLUTION: The present system for use by a wireless regional area network (WRAN) is provided with a WRAN cell to be operated by a BS for wireless communication with at least one consumer terminal, determines an available channel by operating the BS, provides an in-band channel for data transmission by initializing the channel, and concurrently executes spectrum management for a plurality of out-band channels, spectrum detection, and data transmission for the in-band channel. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve a random access memory array about array structure supporting necessity of a decreased write-in current for a memory array. SOLUTION: A random access memory array includes first random access memory elements arranged in a plurality of rows and columns for storing data words at a multiple memory locations. The memory array further includes second random access memory elements arranged in at least one additional column. Each second random access memory element is associated with a memory location to store a flag value indicative of whether the data word stored at that memory location is a true or complement version. The individual memory elements may comprise magnetic random access memory elements. Alternatively, the individual memory elements may comprise flash memory cells. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an improved circuit and method for driving a write head in a hard disk drive (HDD) system. SOLUTION: The write driver includes a circuit matching output resistance to the odd characteristic impedance of the interconnect and a voltage boosting circuit. The voltage boosting circuit is connected between a high voltage reference or supply voltage and a low voltage reference, and includes a current source, such as a MOS transistor, connected to the input node of a capacitor. During the overshoot duration, the current source operates at saturation to generate a pulsed current with an amplitude of half the load current. The circuit includes another transistor in series with the current generator between the capacitor and the driver output. A forward bias diode is connected between the capacitor output node and high voltage reference and enters reverse bias during overshoot duration swinging the driver output voltage above supply voltage. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To correct for thermal asperity transients occurring in a hard disk drive. SOLUTION: The preamplifier 110 has an input gain stage receiving a signal from an MR head 128, a thermal asperity transient correcting circuit 111, and an output buffer outputting a reader output to a read channel. The thermal asperity transient correcting circuit 111 is composed of a high-pass filter and voltage controlled based upon an input control signal from a filter controller. The filter controller uses a low-pass filter functioning as a peak detector to detect peaks in either the input or output voltage of the high-pass filter. The low pass filter output is applied to a non-linear function generator generating the control signal for the high pass filter based on an increasing function of the absolute value of the low pass filter output. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for improving solder joining reliability in a QNF integrated circuit package. SOLUTION: In a system for improving solder joining reliability in an integrated circuit package, each of terminals of a Quad Flat Non-leaded integrated-circuit-package is formed such that it has a portion for defining a solder slot on a surface of a bottom of the terminal. An outer surface of a die pad of an integrated circuit package is also formed such that it has portions for defining a plurality of solder slots on periphery of the die pad. When solder is applied to the die pad and the terminal, the solder fills the solder slot, and improves the solder joining reliability in the integrated circuit package. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide method and apparatus for a smart card device supporting both wireless and wired modes. SOLUTION: The apparatus is provided for a universal serial bus (USB) and wireless smart card device. The apparatus includes a mode detector, switching block, controller, antenna and wired interface. Further, an apparatus for a triple mode smart card is provided. The apparatus for the triple mode smart card includes the mode detector, switching block, controller, antenna and wired interface. The apparatus operates in one mode out of wireless, USB and International Standard Organization 7816 mode or other wired modes. Further, the apparatus for either one of these smart cards can operate in both wireless and wired modes without conflict and on and off of a power switch to change configuration. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for improving an emulator for a multimode smart card, the emulator providing a more convenient connection to a smart card adapter. SOLUTION: The emulator for a multimode smart card includes an emulation circuit which executes a smart card application in a plurality of operation modes. The emulator additionally includes a smart card connector connected to the smart card adapter which is operable in at least one of a plurality of the operation modes. Further, the emulator includes a plurality of cable assemblies corresponding to each operation mode in which a first end is connected to the emulation circuit. The emulator also includes an interface device which is connected between the second ends of a plurality of cable assemblies and the smart card connector, and connects the cable assemblies selected based on the operation mode of the smart card adapter. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method and a unit offering a high-speed jitter testing capability. SOLUTION: The prevention provides an integrated data generator for testing a high-speed serial interface. A transmission timing generator used in a transmit data path includes a high-frequency clock generator such as a phase lock loop and a delay lock loop or the like equipped with an input for receiving an oscillator or a base clock input. A clock modulator receives both of existing low-frequency and high-frequency modulating signals. A high-speed modulating clock signal is generated to allow a jitter testing to be conducted with a receiver combined with downstream. Although a fixed frequency such as 3, 6, 125, 150, 250, 300, 750, 1,500 MHz or the like is used for the high-speed modulating signal for example, any high-speed modulating frequency can be used for generating an intended volume of jitter. In a similar way, the amplitude of the high-frequency modulating signal can be varied as desired. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a system and a method for releasing the pressure from a cap-sealed integrated circuit package. SOLUTION: A system and a method for releasing the pressure from a cap-sealed integrated circuit package are provided. A solder mask equipped with multiple solder mask vents (air holes) used for forming multiple vapor pressure vents (air holes) by penetrating the solder is installed on an integrated circuit. The vapor pressure vents avoid increase in vapor pressure which causes the soldered cap to be displaced from the position at which the cap was soldered. In another embodiment, pressure is released through holes made by penetrating an epoxy layer used for installing a cap. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an improved technology to transfer buffer data between a host and a data storage device. SOLUTION: In this architecture, it is provided with a host pointer, which links an extent record to a next host extent record in a host extent record set, and a storage device pointer, which links the extent record to a next storage device extent record in a storage device extent record set. In addition, a system to transfer data between a host and a storage device is provided. In the system, an extent table is related to the data buffer, and the extent table includes at least one extent record, an LBA chain table that is connected to the host and the extent table, and a track section table that is connected to the storage device and the extent table. COPYRIGHT: (C)2005,JPO&NCIPI