Sony Corporation

Asahi Seimitsu Kabushiki Kaisha

Pentax Corporation

Matsushita Electric Industrial Co., Ltd.

Silicon Test Technologies. Inc.

Masayuki Arai

Terumi Ogasawara

Tohru Shikano

Katsuhisa Aratani

Atsushi Fukumoto

Keiichi Tsutsui

Toru Shikano

Yoichiro Sako

Seiji Kobayashi

Hideo Owa

Eijiroh Tada

Shinichi Yamamura

Shunichiro Wakamiya

Hisao Osabe

Keiichi Iiyama

Takayasu Shishido

Seiki Yokozeki

Masakazu Yamagata

Yoshinori Tsuboi

Kenichi Ichino

Itsuo Takamiya

Akihisa Yamazaki

Kazuhiko Iwasaki

A program executed on a computer including storage, processing, output, and input units, the storage unit storing test-difficulty-calculation-elements-database, test-menu-database, and test-flow-database, for each test-menu-record, the program causing the processing unit to execute: calculating test-difficulty for each test-menu-record based on test-difficulty-calculation-formula by using at least one among pieces of information indicative of relationship with netlist, the number of package/test pins, expected operational clock frequency, process technology information, power consumption, and tester storage space; identifying all relationship between DFT scheme and priority, and causing the storage unit to store information indicative of the relationship between the DFT scheme and priority into the test-flow-database; and sorting the DFT scheme in an order of the priority based on the relationship between the DFT scheme and priority, causing the storage unit to store the DFT scheme as a test flow, and causing the output unit to output the test flow.

Computer program and computer system for producing test flow

An information processing apparatus for executing a process of recording data on a multilayer optical disk. The information processing apparatus includes: an encoding unit for encoding data to be written; a modulation unit for modulating the encoded data to generate a plurality of modulated data blocks corresponding to different recording formats; a pickup for sequentially writing the modulated data blocks in the different recording formats to different layers of the optical disk; and a control unit for controlling the writing of the modulated data blocks in the different recording formats so that writing processing per unit of modulated data is completed within processing time per unit of data encoded by the encoding unit.

Apparatus and method for recording data in different formats on a multilayer optical disk, and storage medium having a program stored thereon to enable a computer to perform such method

A diaphragm apparatus of a lens for a CCTV camera includes a diaphragm blade which opens and closes a stop aperture of the diaphragm apparatus; and an ND filter which is attached to the diaphragm blade, the ND filter having a spectral transmittance so that the transmittance of infrared radiation therethrough is substantially identical to, or less than, the transmittance of visible light therethrough, or alternatively, the ND filter having a spectral transmittance which cuts out infrared radiation. The ND filter covers the stop aperture when the diaphragm blade is moved to open the aperture.

Diaphragm apparatus of lens for CCTV camera

A diaphragm control apparatus for a lens of a CCTV camera having a diaphragm driver for opening or closing a diaphragm in accordance with a diaphragm control signal, includes a remote diaphragm controller which outputs a remote diaphragm control signal to set an optional diaphragm position, a diaphragm control signal setting device which sets a diaphragm control signal in accordance with the remote diaphragm control signal and which outputs the diaphragm control signal to the diaphragm driver to move the diaphragm to a diaphragm position corresponding to the diaphragm control signal, and a power source which supplies power to the diaphragm control signal setting device. The diaphragm control signal setting device is provided with a memory for storing the diaphragm control signal when the power supply is interrupted, so that the diaphragm control signal which has been set at the interruption of the power supply can be output when the power supply is carried out again.

Diaphragm control apparatus for lens of CCTV camera

A recording and reproduction apparatus using a plurality of generations of optical recording media and an optical recording medium used in such a recording and reproduction apparatus, wherein the optical recording medium comprises first and second recording areas, the first recording area is divided into a plurality of zones, each of the plurality of zones is divided into a plurality of divided areas of one type among a plurality of types set in advance, the plurality of divided areas are assigned addresses and have fixed recording capacities, and identification information indicating the one type is recorded in the second recording area. The apparatus focuses a laser beam on the second recording area to read the identification information and records information on the first recording area or detects recorded information of the first recording area based on the identification information. The optical recording medium is for example a magneto-optical disk.

Optical recording medium, recording, and reproduction apparatus having multiple recording capacity features

An information playback apparatus is disclosed which can play back information with a high degree of accuracy. The information playback apparatus plays back the addresses from a recording medium on which a land address and a groove address are recorded at positions displaced from each other. The information playback apparatus includes an AM detection circuit for detecting an AM read out from the recording medium to produce an AM detection pulse signal, a masking signal production circuit and an AND circuit for removing, when a pickup scans the land, an AM detection pulse produced while the pickup passes the land adjacent an area in which the groove address is recorded but removing, when the pickup scans the groove, an AM detection pulse produced while the pickup passes the groove adjacent an area in which the land address is recorded to produce a synchronism detection signal, and an address data decoding circuit for decoding the information in response to the synchronism detection signal to produce address data.

Information playback apparatus

An address information recording region in a header of a land or/and groove on a super compact magneto-optical disk stores one address and an error correction code generated by the Reed-Solomon system corresponding to the address. Preferably, one symbol consists of four bits and the error correction code is generated by the Reed-Solomon system for every four bits.

Optical rotating recording apparatus and method with address information and corresponding error correction code

To provide a disc-shaped recording medium whose tracks at borders of zones have header information to enable a pick up to transfer to a target track, and whose data fields are not influenced by crosstalk or double refraction caused by the header fields. Two header fields are formed in the two tracks and two header fields are formed in the two tracks such that header fields in the zone , header fields , header fields and header fields in the zone range successively. Thus, each of tracks in the border area has at least one header field or , and even though a pick up transfers to one of the tracks in the border area the pick up can find header information written in the header field or within a period required for the optical disc to make one rotation.

Disc-shaped recording medium

When input signals for a plurality of programs, after being subjected to data compression, are to be multiplexed and recorded, switching of data compression ratios are controlled for each input signal according to the data transfer rate at which recording is possible and the unused capacity on the recording medium among other factors. In this manner, a program recording apparatus is enabled to simultaneously record a plurality of programs simply and reliably by applying this disposition to, for instance, an optical disk apparatus for recording television broadcast programs.

Program recording methods and apparatus

A travel-limit circuit having a DC motor for a lens by which the endurance of the motor can be improved while at the same reducing the rebound due to the inertia of the moving body at a travel extremity. The travel-limit circuit has a lens motor that drives, e.g., zoom lens groups. Limits which detect whether the lens group has reached their travel extremities at which mechanical stoppers are provided. The motor driving circuit, which drives the lens motor and the limit switches, activates a short break by short circuiting the pair of input terminals on the lens motor via diodes while cutting current flow from the motor driving circuit for the lens motor upon detection that the lens groups have reached their travel limit.

Travel-limit circuit having a direct current motor for a lens

In a concentric ND filter in which multi-layered circular ND filter elements whose diameter is decreased stepwise toward the uppermost layer from the lowermost layer are concentrically provided on a first transparent substrate, a surrounding space of the concentrically multi-layered ND filter elements defined by and between the surface of the transparent substrate and the surface of the central ND filter layer of the smallest diameter is filled with a transparent adhesive.

ND filter

A circuit board including a general-purpose region for mounting a general-purpose electrical part, and a programmable region for mounting a programmable digital electrical part, the general-purpose region and the programmable region being provided on the same board. The circuit board may comprise at least four layers of a first wiring pattern layer, a second wiring pattern layer, a power source layer provided between the first and second wiring pattern layers, and a ground layer provided between the first and second wiring pattern layer.

Circuit board having general purpose region and programmable region

A data transmission and reception system according to this invention comprises a transmitter for transmitting data by modulating transmit data and a receiver for receiving and demodulating a signal from the receiver, wherein the receiver includes a parallel resonator for receiving a PSK signal; a full rectification circuit for detecting output from the parallel resonator; a low pass filter for shaping the waveform of output from the full rectification circuit; and a comparator for converting output from the low pass filter into a binary-coded signal so that demodulated signals can be obtained from the output of the comparator. Therefore, PSK signals can be demodulated without a PLL or a tank circuit, the overall system consumes a smaller amount of power and is thin and reliable, the transmitter has an amplifier that can operate efficiently, particularly with a limited power supply as in IC cards or a single power supply used for portable terminals, and the receiver is reliable even with a simple circuit using a communication method that locally suppresses the amplitude at phase change points to remove an oscillation circuit in order to reduce the size and thickness of the device.

Growing community of inventors

Tokyo, Japan

Masayuki Arai