摘要:
A bus system with an improved propagation velocity, comprising main lines, and a plurality of stub lines provided on a one-to-one correspondence with a plurality of modules, and connecting the corresponding modules to the main lines.
摘要:
A silver halide photographic light sensitive material IS DISCLOSED, comprising a support having thereon a yellow dye image forming layer, a magenta dye image forming layer and a cyan dye image forming layer, wherein when the photographic material is subjected to exposure of not more than 10−3 sec. per pixel element and further to color developing to form yellow, magenta and cyan images, a variation at multiple exposure, based on non-multiple exposure, of an average gradation, which is a slope that connects two pints corresponding to densities of 0.5 and 1.5 on a characteristic curve of each of the yellow, magenta and cyan images, is not more than 10%.
摘要:
A bus system has a bus constructed of a plurality of signal lines for transmission of signals, first and second terminating resistors provided at both ends of the respective signal lines, first, second and third modules coupled to the bus between the first and second terminating resistors and being each operative to transmit a signal through an output circuit of open drain type, first series resistors inserted in the respective signal lines between the first and second modules, and second series resistors inserted in the respective signal lines between the second and third modules.
摘要:
A leadframe and a method of manufacturing a semiconductor device make it possible to manufacture easily and efficiently such small-size semiconductor devices as have many leads but rarely suffer from short circuits between the leads when mounted on a circuit board. To achieve this, in a leadframe having a plurality of leads, an island for mounting a semiconductor chip, and a tie-bar for joining the leads together, the leads are given bends at their intermediate positions so that the pitch with which they are arranged is greater in a region farther from the island than in a region closer thereto, and the tie-bar is formed between those bends and the island. After the semiconductor chip mounted on the island, together with the portion surrounding it, is sealed in in a resin mold, those portions of the tie-bar which come between the leads are removed by cutting them apart parallel to the side edges of the leads. A projection is formed in a side edge of the island, and this projection is pressed against the stage during wire-bonding.
摘要:
A varifocal mechanical correction mechanism for a lens barrel for a camera, wherein the mechanism drives a lens with a pair of cam rings for carrying out zooming and focusing functions. One of the cam rings is caused to linearly move in and out along an optical axis by a feed screw. The feed screw that has a shank portion outside a normal feed range and on a non-threaded portion of a shaft.
摘要:
An automatic focusing apparatus includes a telephotographic system and a line sensor comprising multiple light receiving devices which receive light of an object image formed by the telephotographic system, multiple monitor sensors positioned adjacent to said line sensor, which monitor a quantity of light received by the line sensor, and a focus detecting device which controls a light receiving time of the light receiving devices in accordance with the monitor sensors, and detects a focusing state based on outputs of respective light receiving devices. When the focus detecting device fails to detect an effective focusing state, the light receiving time of the line sensor is controlled only by the monitor sensor positioned at a center.
摘要:
For an aperture plate to be used to form dot images of a two dimensional aperture pattern by projection through an imaging optical system in a normal direction, a pattern of markings in ideal positions is projected through an imaging optical system in the reverse direction to normal imaging operations. The image of the pattern is recorded at the position of the aperture plate, and the recorded image is used as a guide to form corrected apertures in the aperture plate. Accordingly, locational errors of the dot images in the normal direction are corrected when the corrected aperture plate is used.
摘要:
A battery chamber has a battery storage portion for storing an elongated battery, a battery contact spring member which is disposed at one end of the battery storage portion to contact the electrode of the battery, and first and second press-down members which are disposed at least at one side of the battery storage portion to extend toward the battery side and to press down and hold the outer surface of the battery, and are separated by a predetermined interval, so that the first press-down member is located at the battery contact spring member side. The second press-down member is formed with a slanted portion at an edge on the first press-down member side. A reverse voltage prevention mechanism for a battery according to this invention has a battery contact piece member which is arranged in a battery chamber and is formed with bent portions on the two edges of a plus-end battery contact piece, and an insulating member which is formed with opening portions for receiving the bent portions of the battery contact piece member.
摘要:
A pickup is provided for reading the program data and identification data on a disc. A memory is provided for storing data read out by the pickup. A control unit operates to control the reading of data. The control is performed in such a manner as to intermittently read the program data of a first disc, to intermittently store the read out data in the memory means, to read identification data of a second disc during a period between the reading of the first disc, to continuously reproduce the stored program data.
摘要:
Bus clock generation circuits divide an output of an oscillation circuit with respect to frequency and output phase state signals. A synchronization circuit judges a setup condition on a second bus on the basis of the phase state signals and, when judging the satisfied setup condition, outputs a shift request signal to a CLK2 generation circuit. This causes the CLK2 generation circuit to change a phase of a clock CLK2 in such a manner that data transmission ends always within one period of the clock CLK2, thus a reducing synchronization overhead.