Abstract: Mixture preventing valve includes first flow passage allowing a first fluid to flow; second flow passage allowing a second fluid to flow; communication passage allowing first flow passage and second flow passage to communicate with each other; valve body that opens/closes communication passage; and valve seat provided on an inner wall surface of the communication passage that contacts valve body. Valve body includes first valve body piece and second valve body piece arranged side by side in a state of being separated from each other in a movement direction of valve body. Valve seat contacts respective outer peripheral surfaces of first valve body piece and second valve body piece. In the inner wall surface, a portion where valve seat contacts outer peripheral surface of first valve body piece, and a portion where valve seat contacts outer peripheral surface of the second valve body piece exist on a same plane.

Abstract: Mixture preventing valve includes first flow passage allowing a first fluid to flow; second flow passage allowing a second fluid to flow; communication passage allowing first flow passage and second flow passage to communicate with each other; valve body that opens/closes communication passage; and valve seat provided on an inner wall surface of the communication passage that contacts valve body. Valve body includes first valve body piece and second valve body piece arranged side by side in a state of being separated from each other in a movement direction of valve body. Valve seat contacts respective outer peripheral surfaces of first valve body piece and second valve body piece. In the inner wall surface, a portion where valve seat contacts outer peripheral surface of first valve body piece, and a portion where valve seat contacts outer peripheral surface of the second valve body piece exist on a same plane.

Abstract: A portable electronic apparatus includes a display part that displays information, and an approximately pipe-shaped protective part, provided around and thicker than the display part, which protects the display part by positioning the display part at a depressed portion from the protective part.

Abstract: A device for adjusting the height an armrest of a chair including a support disposed on a chair and a receiving/supporting cylinder movably engaged with a support. Extending longitudinally in a slit in the receiving/supporting cylinder is a stepped member. An engaging piece within the cylinder is adapted to be moved into and out of engagement with the stepped member. The engaging piece extends through a slit in the cylinder. Surrounding the receiving/supporting cylinder is an operating cylinder which has circumferentially spaced internal ridges. As the operating cylinder is rotated. the ridges engage the engaging piece and move it into and out of contact with the stepped member.A spiral circumferential groove is also provided in the receiving/supporting cylinder and a pin on the operating cylinder is engaged in the spiral groove whereby rotatable movement of the operating cylinder causes axial movement of the same.

Abstract: A multiple video server system for transmitting data to a second network of a constant bit rate (CBR) through a first network of a variable bit rate (VBR). The server system has a server unit for transmitting data to the first network at a transmission interval (T) adapted to the constant bit rate of the second network. In the case where the constant bit rate of the second network is set to (n) [Mbps] and a transmission data amount which is transmitted at a time to the first network is set to DL, the server unit obtains the transmission interval (T) from T=DL/n and sets.

Abstract: An attaching cylinder 6 is disposed on an armrest main body 5. A main shaft 3 is disposed uprightly on an upper end of a support 2 and rotatably combined with the attaching cylinder 6 inside the attaching cylinder 6. A guiding portion 8A is disposed on an upper end of the main shaft 3 which protrudes from an upper end of the attaching cylinder 6. A guiding surface 8a is disposed on the guiding portion 8A along a circle formed with the main shaft 3 as a center. A supporting piece rotation-urged toward the guiding surface at a distal end portion thereof and attached rotatably to the armrest main body around the longitudinal axis at a proximal end portion thereof. A roller 14 is disposed on a distal end portion of the supporting piece and rolls on the guiding surface 8a. Receiving recess portions 11A, 11B, 11C, 11D, 11E, 11F, disposed at suitable locations of the guiding surface 8, with which the roller 14 is engaged or disengaged.

Abstract: A system provider has a data storing unit for storing at least one digital picture data block referred to as a minimum playback picture block (GOP: Group of Pictures) in each fixed-length area (for example, picture data for one second is composed of eight GOPs) and a detecting unit for detecting an address in the data storing unit for the picture data to be provided as playback picture data corresponding to a playback request received from a user.

Abstract: A demultiplexer receives an MPEG1 system stream obtained by multiplexing encoded data of video and audio and separates the stream into elementary streams (ES) of video and audio. A packetizer forms packetized elementary streams (PES) of MPEG2. Finally, a multiplexer divides the stream into transport packets each having a prefixed length of 188 bytes and, after that, converts the stream to an MPEG2 transport stream (TS).

Abstract: A multimedia communication system which allows a user at a terminal to efficiently place an order for merchandise with a merchandise provider includes terminals and a multimedia server connected thereto via a public network. The multimedia server includes an information storage unit for storing multimedia information on each merchandise item, a communication control unit for controlling information transmission between terminals and the server via the public network, and a bulletin board service unit for transmitting merchandise items from the information storage unit to the communication control unit in response to a merchandise information look-up request from any of terminals. The multimedia server further has an ordering service unit and a main service unit.

Abstract: A video information server system which makes it possible for a party to remotely control any of a plurality of video information server apparatuses holding a plurality of types of video information different in type from each other through a communication network and thereby easily obtained desired video information, the system being provided with a video information server center including a plurality of video information server apparatuses and a center control equipment for selecting one of these apparatuses in accordance with a request from a request terminal and sending the video information of the request and the central control equipment being provided with a common management file for recording various data for converting requests from terminals compatible with all of the plurality of video information server apparatuses into requests corresponding to the individual apparatuses.

Abstract: An automatic position managing system is applied to a communication system which includes a plurality of telephone sets coupled to a private branch exchange. The automatic position managing system uses a radio card which is carried by a user and has the functions of storing information related to the user and transmitting the stored information by a radio signal. A first part supplies data to the private branch exchange in response to the radio signal received from the radio card and a second part automatically detects a position of the user carrying the radio card based on the data received from the first part via the private branch exchange by associating the user with the telephone set to which the first part is coupled.

Abstract: A method and apparatus for performing image communication between a plurality of terminals are suggested, in which a composing unit is provided for composing a signal transmitted from a predetermined number of terminals at the transmitting side, together with destination information, into one image signal. An encoding unit encodes the composite signal composed by the composing unit. The composite signal encoded at the encoding unit is transmitted to the receiving side through an exchange at the transmitting side.

Abstract: A card type input/output interface device includes a first connection part for transferring data between a main body of an electronic device and the card type input/output interface device, a second connection part which is coupled to the first connection part and transfers data between an external device and the card type input/output interface device, and a card supporting the first and second connection part. The first connection part is accommodated in the main body when the card type input/output interface device is inserted into a slot provided in the main body.

Abstract: A semiconductor device which is resistant to cracking during a heat cycle is provided which uses a lead-tin alloy solder having a weight ratio in a range of 45/55 to 55/45 to bond an insulation plate and a heat sink plate of the semiconductor device to one another.

Abstract: An engine igniter has a reference signal coil which generates an advance-side reference signal and a lag-side reference signal during a half-cycle of the alternating current output of a generator. An ignition timing control circuit determines the direction of rotation of the engine based on the polarity of the alternating current when the reference signals are generated. The ignition timing control circuit controls the ignition timing of an ignition circuit, using the lag-side reference signal as a reference at low engine speeds and using the advance-side reference signal as a reference at high engine speeds. When the engine begins to rotate in reverse, the ignition timing control circuit prevents ignition and stops reverse rotation.

Abstract: An ignition timing control circuit for an internal combustion engine of a ring gear tooth counting type includes a throttle sensor for sensing the load condition of the engine and generating an output voltage representative of the sensed load condition, a reference-signal generator for generating a reference signal, a clock pulse generator in the form of a gear-signal pick-up coil for generating clock pulses based on the rotational position of a ring gear, a counter operable to start the counting of the clock pulses generated by the clock pulse generator when the reference-signal generator generates a reference signal, the counter outputting a digitalized output representative of the number of the counted clock pulses, a D/A converter for converting the digitalized output of the counter into an analog voltage having a stepped form, an integrator for integrating and smoothing out the stepped output voltage of the D/A converter, and a comparator for comparing the output voltage of the integrator and the output

Abstract: An ignition timing control device for an internal combustion engine is provided with a microcomputer which determines the ignition timing (i.e., the angles BTDC) on the basis of a measurement of the period between successive pulses of a crankshaft angle signal in each ignition cycle. The device comprises, in addition to other conventional components, an rpm level judgement device, for determining whether the rpm of the engine is above a predetermined level or not. At the start of each ignition control cycle, this determination of the rpm level is effected on the basis of the measurement of the period of the crankshaft angle signal performed in the immediately preceding ignition cycle.

Abstract: An engine-igniting signal generation apparatus comprises a flywheel rotatable with the crank shaft of an internal combustion engine, a field magnet attached to the flywheel, and a plurality of pickup devices provided facing the field magnet to produce ignition signals in synchronism with the rotation of the flywheel. The cores of the pickup devices are formed by a substrate body of one piece; each coil wound around the cores connects to a terminal, to output the ignition signals, and is covered with an insulating material.

Abstract: A card type input/output interface device includes a first connection part for transferring data between a main body of an electronic device and the card type input/output interface device, a second connection part which is coupled to the first connection part and transfers data between an external device and the card type input/output interface device, and a card supporting the first and second connection part. The first connection part is accommodated in the main body when the card type input/output interface device is inserted into a slot provided in the main body.