Abstract:
PROBLEM TO BE SOLVED: To provide an improved test technique for a read-on memory in an integrated circuit. SOLUTION: The test technique comprises a memory cell, a built-in self-testing cell, a comparing cell and a signature cell, and the signature cell contains one set of first conductive paths at a first level and one set of second conductive paths at a second level. The paths at the first level are physically separated from the paths at the second level by an insulative substance and a contact is disposed so as to allow both the paths to be electrically connected with each other. A combination of the first and second conductive paths in the connected condition and the non-connected condition gives the bit condition of a standard signature word, and gives an address data to a memory construct and generates a consequential signature word. The consequential signature word is compared with the standard signature word to generate the status condition in a memory construct-programmed condition. The result of success or failure on the memory construct-programmed condition is expressed by using the status condition. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a technology for more effectively and efficiently reducing power consumption of an electronic apparatus. SOLUTION: In the present invention, the electronic apparatus includes the kinetic sensitivity power switching integrated circuit, and this circuit includes a power switch connected between an input and an output and an MEMS inertia detecting switch movable from a first position to a second position on the basis of a movement. Besides, the kinetic sensitivity power switching integrated circuit includes a detector for operating the power switch to supply power from the input to the output on the basis of the movement of the MEMS inertia detecting switch from the first position to the second position. The first position and the second position can be respectively defined as ordinarily opened and closed positions. In the apparatus, until the MEMS inertia detecting switch is moved from the opened position to the closed position, supply of power can be stopped. The detector can generate a power-on reset (POR) signal on the basis of the movement of the MEMS inertia detecting switch from the opened position to the closed position. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a fingerprint detector improved in durability, and its manufacturing method. SOLUTION: This fingerprint detector having a smooth sensing surface brought into contact with a fingerprint has capacitive sensor plates defining an array of sensor cells below the sensing surface and tungsten ESD protection grid lines surrounding each sensor cell. The sensing surface is defined by an alumina layer with the tungsten grid lines embedded therein. The alumina layer provides the sensing surface with improved scratch resistance. The resulting detector is more sensitive in its capacitive sensing due to the relatively high dielectric constant of the alumina layer. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a content-addressable memory (CAM) circuit in which use efficiency of the area of a semiconductor substrate is improved. SOLUTION: This CAM cell has first and second memory circuits and a comparing circuit. The comparing circuit has six transistors formed on two activation regions. Local mutual connection is provided between the first memory circuit formed by poly-silicon regions and the comparing circuit. Local mutual connection is provided between the second memory circuit formed by poly-silicon and conductive regions and the comparing circuit. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an improved technique for initially acquiring a synchronous code group and frame alignment data, using a UMTS-FDD receiver. SOLUTION: For completing a step 2 process, a different synchronous channel is used. In more detail, a complete synchronous channel correlator is used for a demodulation such that it correlates received signals in known time slots for coupling a primary synchronous code with a plurality of secondary synchronous codes each. The coupled correlation provides a step 2 performance improved in the view of the acquisition time and the signal to noise ratio. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for improving command queue rearranging process with the load of processor resource decreased. SOLUTION: This invention provides a hardware command queue with a memory device for a mass memory system. Plural entries are demarcated within the memory device, at least several among which are active entries. Among the active entries, at lease several are associated with pending access commands with at least one entry as a head entry associated with the active command in operation. Physical target position is stored in each active entry with the calculated servo distance stored in each active entry. A link list including a pointer for defining execution sequence is stored together with the command queue. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a circuit and a method to detect a phase of a servo signal so as to allow a servo circuit to compensate for a reversed-connected head. SOLUTION: A detector recovers servo data from a servo signal generated by a read/write head and determines a head-connection polarity from the recovered servo data. Such a detector allows the servo circuit to compensate for a reversed-connected read/write head, and thus allows a manufacturer to forego time-consuming and costly testing to determine whether the head is correctly connected to the servo circuit.
Abstract:
PROBLEM TO BE SOLVED: To provide an improved data storage medium, particularly a data- storage disk having a few or no spin-up wedges. SOLUTION: This data-storage disk has a disk sector for storing data and a servo wedge located at the beginning of the sector. The servo wedge identifies the sector in conjunction with both an initial positioning of a read-write head and a data read and write operation. By using a servo wedge to provide both an initial head position on disk spin up and a head position during a read or write operation, one can increase a disk's data-storage capacity by reducing the number of, or altogether eliminating, spin-up wedges. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a technology for reducing a soft error in a dynamic memory device. SOLUTION: This memory device is provided with a dual port memory equipped with a first port corresponding to an externally started memory access operation and a second port for dealing with the memory access operation related with an error check and error correcting operation. An error module connected to the second port of the dual port memory performs an error check operation with respect to a word read from the dual port memory. An error controller connected to the error module controls the error module to perform the error check operation with respect to each word successively read from the dual port memory through the second port. The error check operation is performed substantially in parallel with the externally started memory access operation to be performed by using the first port of the dual port memory. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an integrated circuit and a method for the classification of electrical devices. SOLUTION: An integrated circuit device and a method for classifying electrical devices is disclosed. Reference current responses of a plurality of electrical devices are determined and stored in a memory 208. A real-time current response of a specific electrical device is measured and stored in the memory 208. A processor 204 compares the measured real-time current response of the specific electrical device to the reference current responses of the plurality of electrical devices. The classification of the electrical device is then performed based on the comparison. COPYRIGHT: (C)2009,JPO&INPIT