摘要:
A fixture with movable pawls and positioning walls is attached to a circuit board. An electronic component is inserted into the fixture from its upper side. Since the movable pawls move outward due to their slopes, the electronic component is allowed to fit between the positioning walls. After the fitting of the electronic component, the movable pawls hold the sides of the upper face of the electronic component and the positioning walls are in contact with the peripheral walls of the electronic component. Bumps provided on electrode pads of the electronic component are connected to electrodes on the circuit board. Thus, the electronic component can be mounted using the flip chip technique. In addition, the electronic component can be removed easily by moving the movable pawls even after being mounted.
摘要:
Transmission line structure is composed of a pair of signal conductors which are embedded in one wiring region of a dielectric layer and a thickness in height of the signal conductor is larger than a width, and is constituted so that a coupling impedance between the adjacent signal conductors is lower than a coupling impedance between the signal conductor and another conductor formed in another wiring region, and thus to provide a multi-layer wiring board having a transmission line structure of high wiring density and excellent transmission characteristic.
摘要:
Provided are an optical disc discrimination method, an optical disc device and an integrated circuit that enable to accurately discriminate the type of an optical disc. The optical disc discrimination method comprises a first seeking step (S3) of performing a seek operation to a predetermined reference address in a user data area; a second seeking step (S5) of performing a seek operation from the reference address sought in the first seeking step (S3) to a predetermined target address in a physical information area, an address reading step (S7) of reading a current address at a position sought in the second seeking step (S5), and an optical disc type determination step (S8 through S10) of determining the type of the optical disc loaded in the optical disc device, based on the current address read in the address reading step (S7).
摘要:
A medical material which contains a lactide-containing polymer having weight-average molecular weight lower than 400000 as determined by GPC and has a lactide content of 4000 ppm or lower.
摘要:
An osteosynthetic pin characterized in that the pin is formed substantially of a poly-L-lactic acid having a molecular weight of at least about 70,000, and is formed by axially drawing about 2 to about 10 times at an elevated temperature of about 70.degree. to about 120.degree. C.
摘要:
A game apparatus enabling a person to learn the standard orders of development in or to solve a problem of the game of Go, shogi (Japanese chess), chess or the like. In the case of learning the standard orders of development in the game, this game apparatus detects and displays the move of a game piece, and in the case of the game problem, the game apparatus counts the number of error moves of the game piece and does not display the correct move of the game piece until the counted number of error moves of the game piece is greater than a predetermined value, and then displays the correct move of the game piece.
摘要:
A game apparatus for enabling players present at remote places from each other to easily play the game through a connected common communication network like a telephone line. The game apparatus has functions for detecting and displaying the moved arrangement of a game piece, for transmitting and receiving the detected signals via the communication network, and for collating the reproductive motion of the one player, performed by watching the displayed moved arrangement of a game piece, with the intended motion carried out by the other player.
摘要:
An image-capturing device disclosed in the present application includes: an image-capturing element including a plurality of photoelectric conversion elements arranged in two dimensions, wherein the plurality of photoelectric conversion elements are exposed through successive scanning and electrical signals are read out from the plurality of photoelectric conversion elements through successive scanning, thereby generating an image signal; a lens optical system including a focus lens for collecting light toward the image-capturing element; a driving section for driving one of the image-capturing element and the focus lens so as to change a distance between the image-capturing element and the focus lens; a displacement control section for outputting a command to the driving section so as to control displacement of the image-capturing element or the focus lens to be driven based on a predetermined displacement pattern; and a synchronizing section for controlling the displacement control section based on exposure timing of the image-capturing element, wherein: the predetermined displacement pattern represents a reciprocal displacement of the image-capturing element or the focus lens to be driven over an entire section between a first focus position of the focus lens or the image-capturing element at which focus is at a first object distance in an image-capturing scene and a second focus position of the focus lens or the image-capturing element at which focus is at a second object distance in the image-capturing scene; and the image-capturing element or the focus lens to be driven is reciprocally displaced an integer number of times within an exposure time for one image of the image-capturing scene for each of the plurality of photoelectric conversion elements.
摘要:
A movement control apparatus includes: an actuator that causes a driven body connected to a driving coil to perform reciprocating movement; a signal generation unit that generates a velocity command signal which indicates a target velocity of the driven body; a driving unit that supplies electric current corresponding to a driving signal to the driving coil; a voltage detection unit that detects induced voltage generated in the driving coil, and outputs a voltage signal corresponding to the induced voltage; a signal correction unit that corrects, based on the driving signal and the voltage signal, the voltage signal to adjust a shift of a resistance value from a reference resistance value of the driving coil, thereby generating a velocity signal; and a control unit that generates the driving signal based on the velocity command signal and the velocity signal, and outputs the driving signal to the driving unit.
摘要:
A power supply is provided, which is capable of stabilizing a generated output of the fuel cell using neither a voltage nor a current outputted from the fuel cell as a negative feedback signal. The power supply includes a fuel cell 110, a DC-DC converter 120 that adjusts a voltage outputted from the fuel cell 110 according to a PWM signal and then outputs the voltage to a load device 200, a switching controller 130 that generates the PWM signal and outputs this signal to the DC-DC converter 120, a voltmeter 140 that measures a voltage Vout outputted from the DC-DC converter 120, and a rechargeable battery 150 connected to the load device 200 in parallel. The DC-DC converter 120 calculates a duty ratio of the PWM signal by performing a specific computation using the voltage Vout and a target fuel cell voltage Vt.