Fujitsu Corporation

Canon Kabushiki Kaisha

Hitachi Media Electronics Co., Ltd.

Fujiisu Limited

Kazuhiko Ito

Hiroaki Furuichi

Yoshio Oozeki

Keiji Fukuda

Yasuo Suzuki

Eiichi Sato

Masayoshi Watanabe

Satoshi Arai

Hideo Sotokawa

Takeshi Uehara

Shigehiko Yazawa

Tetsuo Ehara

Mitsuo Satake

Haruo Moritomo

Rika Nomura

Fumihito Ichikawa

Ryuichiro Mizuno

Akiko Mizushima

Tamotsu Nishida

Kiyohiro Shimokawa

Kouji Yamato

Toru Tachibana

Eiji Iidaka

In an optical pickup device for use in recording and reproducing on an optical recording medium, such as a CD or DVD, banks are formed on both sides of an adhesive agent application position for adhering an optical device, such as a photodetector or a laser diode, in an optical pickup case. At this time, a bank on the side of an optical path is formed higher than a height of an outer bank, and an adhesive agent is poured between the banks, to adhere the optical pickup case and the optical device.

Adhesive structure of optical device, adhesion method, and optical pickup device

A connection structure of Flexible printed circuits comprising: first and second Flexible printed circuits, respectively, including a base formed of a resin, a plurality of wiring patterns arranged side by side on the base, a cover film formed of a resin to cover opposite sides of the wiring patterns to the base, and a connection portion in which the plurality of wiring patterns are not covered by the cover film, the connection portions of the first and second Flexible printed circuits being connected with each other. The wiring patterns in the connection portions include a large width portion which is larger in width than the wiring patterns covered by the cover film. The large width portions on the first Flexible printed circuit and the large width portions on the second Flexible printed circuit are connected to each other by means of soldering.

Connection structure of flexible printed circuits and optical pickup device including the connection structure

In order to improve reliability of an optical disk drive apparatus at low cost, a flexible substrate for making connection between an optical pick-up device incorporated in the optical disk drive apparatus and a drive side is divided into a first flexible substrate fixed to the optical pick-up body (for example, upper surface), and a second flexible substrate connected to the first flexible substrate and extending to the drive, wiring conductors formed on a connection end portion of the first flexible substrate and wiring conductors formed on a connection end portion of the second flexible substrate are superposed at a region adjacent an end of the case of the optical pick-up device body, and connected to each other by joining material, and a connection section between the wiring conductors is held down by a cover for protecting the optical pick-up device body.

Optical disk drive apparatus having a flexible substrate and wiring conductors

A semiconductor laser array comprises a chip having a plurality of luminous spots and a mount for mounting the chip by means of solder. The plurality of luminous spots project toward the laser beam emitting side from the corresponding end facet of the mount. The semiconductor laser array is typically used as light source of an optical scanner for laser beam printers or copying machines.

Semiconductor laser array and optical scanner

This invention is to provide a mold for molding an optical element in which eccentricity of an optical insert can be suppressed as much as possible. In order to achieve this object, in a mold for molding an optical element, which molds an optical element having a curved optical surface on at least one surface thereof by injecting and solidifying a molten resin material, a mold member that forms a cavity surface for molding the optical surface includes a plurality of specular optical inserts that divide the optical surface into a plurality of surfaces. Contact surfaces of the divided specular optical inserts which come into contact with each other have grooves extending from the optical surface.

Mold for molding optical element, mold structure for molding optical element, molding apparatus, optical element molded from resin material, and optical element constituted by plurality of optical surfaces

An image transmission apparatus of this invention generates an image signal for one field at a first rate, forms a first transmission image signal on the basis of the generated image signal, outputs the formed first transmission image signal for one field at a second rate lower than the first rate, forms a second transmission image signal having a smaller information volume than that of the first transmission image signal on the basis of the generated image signal, outputs the formed second transmission image signal for one field at a rate higher than the second rate, and selectively outputs one of the output first and second transmission image signals onto a transmission path, thereby providing, by a simple arrangement, an image transmission apparatus, which can selectively transmit an image signal onto a transmission path at one of different arbitrary rates in correspondence with an application purpose or display mode independently of the transmission rate of the transmission path, can display an image represented by an image signal transmitted from a transmitting apparatus in real time, and can assure low cost, low consumption power, and good operability.

Image transmission apparatus

A control channel junction line system for use with a digital switching network wherein a talking channel used in a control channel is used in a high efficiency is disclosed. Each exchange of the system includes a digital junction line trunk, a low rate information multiplexing trunk, a low rate control channel processing section and a multiplexing/demultiplexing section. When the low rate information multiplexing trunk is connected to a channel on which the control channel is to be carried, one of the circuits corresponding to a time slot used for control channel information is disabled. Upon transmission, the control channel information from the low rate control channel processing section and information from the low rate information multiplexing trunk are multiplexed with each other by and sent out from the multiplexing/demultiplexing section. Upon reception, the control channel information and the information the low rate information multiplexing trunk are demultiplexed by the multiplexed/demultiplexing section. The control channel information is processed by the low rate control channel processing section while the information to the low rate information multiplexing trunk is inputted to the low rate information multiplexing trunk.

Exchange connected to a control channel junction line

In a method of communicating between an ATM-UNI and a LAN in a communication apparatus, which has an ATM-UNI interface and a LAN interface for performing communication between these interfaces via an ATM switch, transmission data in an ATM-cell format is received from a terminal connected to the ATM-UNI interface to a terminal connected to the LAN interface. The ATM cells are accumulated in a buffer memory provided in the ATM-UNI interface and assembled into a frame. Completion of reception of all ATM cells of one frame is recognized and it is determined whether there is margin for a transmission by referring to a status of vacancy of a LAN interface corresponding to the other party to communication. One frame of the ATM cells accumulated in the buffer memory is transferred to the LAN interface corresponding to the other party via the ATM switch in a case where there is margin for transmission. The ATM cells are converted into a frame at this LAN interface and the frame is sent to a LAN terminal.

ATM-UNI-LAN communication method and apparatus

A system includes private lines for carrying respective signals which each have at least one D channel for control information, and plural B channels for data. The system also includes a multiplexer connected to the private lines, which receives the signals and generates a multiplexed signal for transmission on a digital multiplex interface. The system further includes a demultiplexer which receives the multiplexed signal received from the digital multiplex interface, to generate signals for transmission on the private lines. The multiplexer and demultiplexer are designed so that the total number of D channels and B channels can be changed without requiring significant effort or modification of either the multiplexer or the demultiplexer. The system also includes a testing device which transmits and returns a multiplexed signal from the multiplexer, to the demultiplexer. The returned multiplexed signal can be used to test the system without requiring involvement of external devices.

Control channel terminating interface and its testing device for sending

A switching apparatus for constructing a system integrating a telephone switching network and a LAN includes: line interface sections, each connected to a transmission line for transmitting a signal on which low-speed data and high-speed data are multiplexed; a low-speed data switch for switching low-speed data demultiplexed in each line interface section; a high-speed data switch for switching high-speed data demultiplexed in each line interface section; and a processor for monitoring and controlling the data traffic passing through the low-speed data switch and high-speed data switch. An address in a designated position in the high-speed data demultiplexed in each line interface section is read out, whereby the association between the low-speed data terminal and high-speed data terminal is identified and stored. By referring to this association, management of LAN terminals can be performed using the maintenance operation procedures used in a conventional electronic switching apparatus.

LAN management system in electronic switching apparatus

A sub-rate time switch switches a digital multiplexed signal having a basic-rate signal included in a first time slot of the digital multiplexed signal and N sub-rate signals included in a second time slot thereof where N is an integer. Each the sub-rate signals has a sub-rate which is equal to 1/N times a basic rate of the basic rate signal. A speech path memory temporarily stores the digital multiplexed signal input to the sub-rate time switch. A channel signal is read out from the speech path memory and has a plurality of channels corresponding to time slots of the digital multiplexed signal. A control part controls write and read operations of the speech path memory so that the channel signal includes N consecutive channels. Each of the N consecutive channels includes N identical sub-rate signals, and each of the N identical sub-rate signals corresponds to one of the N sub-rate signals included in the second time slot of the digital multiplexed signal.

Growing community of inventors

Yokohama, Japan

Kazuhiko Ito