Abstract: When an output of data is switched from a memory to a memory controller, the memory controller takes in write data output from the memory, and outputs the write data taken in to a data bus. Subsequently, the memory controller outputs read data taken thereinto to the data bus, and then outputs write data of its own to the data bus.

Abstract: The present invention discloses a method for data input/output for memory which minimizes losses of data interruption when switching between reading and writing. A method for data input/output comprises the steps of: holding predetermined data from memory array 12 upon m-th (m is integer) read command; outputting the predetermined data to common I/O 30 and holding new data from memory array 12 upon (m+1)-th read command; holding predetermined data from common I/O 30 upon n-th (n is integer) write command; and storing the predetermined data in memory array 12 and holding new data from common I/O 30 upon (n+1)-th write command.

Abstract: The present invention discloses a memory, and a refresh method for memory, which performs a normal access and refresh one after another within one operation cycle of SRAM. The memory of the present invention comprises a refresh enable which directs execution of refresh, a row address counter that addresses a row address of memory cells to be refreshed, and an execution circuit which refreshes the memory cells of the addressed row address in response to the direction of execution of refresh.

Abstract: A DRAM includes a plurality of DRAM cells; sense amplifiers respectively corresponding to the plural DRAM cells; and means for activating merely a sense amplifier corresponding to a cell to be accessed among the plural DRAM cells, so that merely sense amplifiers in a number corresponding to a burst length can be activated. As a result an access time and restore time can be shortened, and a precharge time can be shortened.

Abstract: A DRAM system is described that can prevent a substantial reduction in bandwidth with respect to a clock pulse frequency even when banks are accessed in no specific order. As a result, provided is a memory system constituted by DRAM whereby a seamless operation is assured not only for reading but also for writing.

Abstract: A draw control chip and video chips V1-V4 are provided. They are connected by a 64-bit data bus, a 4-bit program signal line, and a 1-bit ready signal line. The video chip V1 comprises a decoder DEC1, a program buffer address register PBAR, a sequencer SEQ, a program buffer PB, a decoder DEC2, an address control unit, a selector SEL, and various registers. The video chip V1 and the video buffer APA1 are connected by the data bus. This system is used to transfer data from the control chip to the various video chips in a single operation. The 64-bit data bus can be divided into smaller sections allowing smaller segments of data to be simultaneously processed by the video chips. Additionally, the video chips are capable of providing data directly to one another without accessing the control chip.

Abstract: An automatic assembling apparatus having two identical assembling jigs. One assembling jig is attached to a robot arm and the assembling jig is then moved by operation of a robot from a setting site to an assembling site for assembling a plurality of parts set thereon at the setting site to an article place at the assembling site. Simultaneously, the plurality of parts are set on the other assembling jig. The two units are alternately attached to the robot arm at the setting site. Two receiving tables, each of which is for mounting thereon each of the assembling jigs, are provided alongside of each other at the setting site. A transfer device is provided to transfer each assembling jig from one receiving table to the other receiving table. The assembling jig attached to the robot arm is detached from the robot arm and placed on the one receiving table and the other assembling jig mounted on the other receiving table is then attached to the robot arm.

Abstract: A hinge pin couples a first hinge receiver mounted on a vehicle body and a second hinge receiver mounted on a door to be installed on the vehicle body. The hinge pin is removed from the vehicle body and the door to separate the vehicle body and the door from each other after the vehicle body and the door have been coated, and the removed pin engages in a hinge pin engaging member. The hinge pin is fed to a position where the vehicle body and the door are to be assembled together, and the hinge pin is removed from the hinge pin engaging member. Then, the removed hinge pin is pressed into the first and second hinge receivers which are aligned with each other, thereby coupling the vehicle body and the door to each other.

Abstract: A robot hand changer has a first joint member mounted on a robot arm, a second joint member mounted on a robot hand, and an engaging member mounted on the first joint member and angularly movable with respect to the second joint member for coupling the first and second joint members against each other. The robot hand changer also has an optical signal transmission device including sets of optical fibers disposed in confronting relation out of contact with each other for transmitting control signals across mating surfaces when the robot arm and the robot hand are coupled to each other, and photoelectric transducer circuits for converting electric signals to optical signals and vice versa. The robot hand arm further includes a detecting device for detecting dirt on the mating surfaces.

Abstract: A hinge pin is temporarily held on a first hinge member on the automobile body by means of a hinge pin support mechanism. A door to be attached to the automobile body is held in position, and a second hinge member on the door is brought into engagement with the first hinge member. The hinge pin is pressed into the second hinge member through the first hinge member to couple the door to the automobile door. The hinge pin support mechanism includes a hinge pin retaining member including a ring separably joined to a plurality of legs. When the hinge pin is pressed into the hinge members, the ring is sheared off from the legs and rides in a peripheral groove defined in the hinge pin. The ring then engages one of the hinge members to prevent the hinge pin from being removed from the hinge members. The door can automatically be attached to the automobile body by a door attaching mechanism and detached from the automobile body by a door detaching mechanism.

Abstract: A robot hand changer has a first joint member mounted on a robot arm, a second joint member mounted on a robot hand, and an engaging member mounted on the first joint member and angularly movable with respect to the second joint member for coupling the first and second joint members against each other. The robot hand changer also has an optical signal transmission device including sets of optical fibers disposed in confronting relation out of contact with each other for transmitting control signals across mating surfaces when the robot arm and the robot hand are coupled to each other, and photoelectric transducer circuits for converting electric signals to optical signals and vice versa. The robot hand arm further includes a detecting device for detecting dirt on the mating surface.

Abstract: The present invention provides an automatic assembly system, without using an expensive sensor, to enable an assembling jig to be easily positioned with respect to a particular portion of a car body to which parts are to be assembled, in order to facilitate assembling of the parts while reducing production cost. The basic car-body positioning arrangement preferably includes a reference hole, used for positioning, and a seating piece, used for jacking-up the car body.

Abstract: A hinge pin is temporarily held on a first hinge member on the automobile body by means of a hinge pin support mechanism. A door to be attached to the automobile body is held in position, and a second hinge member on the door is brought into engagement with the first hinge member. The hinge pin is pressed into the second hinge member through the first hinge member to couple the door to the automobile door. The hinge pin support mechanism includes a hinge pin retaining member including a ring separably joined to a plurality of legs. When the hinge pin is pressed into the hinge members, the ring is sheared off from the legs and rides in a peripheral groove defined in the hinge pin. The ring then engages one of the hinge members to prevent the hinge pin from being removed from the hinge members. The door can automatically be attached to the automobile body by a door attaching mechanism and detached from the automobile body by a door detaching mechanism.

Abstract: A hinge pin is temporarily held on a first hinge member on the automobile body by means of a hinge pin support mechanism. A door to be attached to the automobile body is held in position, and a second hinge member on the door is brought into engagement with the first hinge member. The hinge pin is pressed into the second hinge member through the first hinge member to couple the door to the automobile door. The hinge pin support mechanism includes a hinge pin retaining member including a ring separably joined to a plurality of legs. When the hinge pin is pressed into the hinge members, the ring is sheared off from the legs and rides in a peripheral groove defined in the hinge pin. The ring then engages one of the hinge members to prevent the hinge pin from being removed from the hinge members. The door can automatically be attached to the automobile body by a door attaching mechanism and detached from the automobile body by a door detaching mechanism.

Abstract: An apparatus and method for color blinking in a color display system. The system of this invention comprises: a palette means for converting color codes from a processor to color video signals for ultimate display in a color display, blink color registers for storing a first color video signal representing a first color to be blinked and for storing a second color video signal representing a second color different from the first color and from any colors stored in any palette circuit register, a blink code register for storing the address of the palette register storing the first color video signal, and a control means for alternately writing the first and second color video signals into the palette register represented by the palette register address in synchronization with the cycle of a blink clock.

Abstract: A keyboard interface for a data processing system in which a keyboard and a data processor unit are connected through a single clock line for transmitting a clock signal from the keyboard and a single data line for transmitting a serial bit frame having a serial scan code identifying a depressed key in synchronism with the clock signal. The interface uses an error detection and retransmission procedure to correct errors due to noise pulses which are induced on the clock line as by electrostatic discharge and give rise to extra data sampling. The data processing system returns a status signal acknowledging the receipt of a frame to the keyboard via the data line immediately after the number of sampled bits received reaches the predetermined number of bits of a frame. The keyboard checks whether the status signal has been returned after the completion of transmission of a frame and, if not, the same serial scan code is retransmitted.

Abstract: An automatic welding apparatus is comprising a replaceable jig table, a conveying device for carrying the jig table between a setting station and a welding station and temporary welding device mounted on the jig table for applying temporary welds to a workpiece while the jig table is being moved by the conveying device. At least one holding device at the welding station removes the temporarily welded workpiece from the jig table and holds the workpiece therein and an additional welding device is positioned with respect to the holding device for permanently welding the workpiece while the workpiece is held by the holding device and the jig table is being returned to the setting station by the conveying device.

Abstract: A workpiece preset jig arrangement for a welding apparatus. The welding apparatus has an apparatus body, a welding jig mechanism on the body and clamps on the welding jig mechanism for clamping plural component parts for constituting a workpiece so that the workpiece may be welded to another workpiece by the welding jig mechanism. The preset arrangement includes a preset arrangement body positioned adjacent the welding apparatus body, a preset jig mechanism provided on the arrangement body, and preset clamps mounted on the preset jig mechanism for clamping the plural component parts. The preset jig mechanism is moveable between a set position facing the welding jig mechanism and a preset position away from the set position and the welding jig mechanism. The set position is such that the plural component parts may be transferred from the preset jig mechanism to the welding jig mechanism simply by releasing the clamps on the preset jig mechanism and engaging the clamps on the welding jig mechanism.