Patent application number | Description | Published |
20090167452 | TRANSMISSION CHARACTERISTIC ADJUSTMENT DEVICE, CIRCUIT SUBSTRATE, AND TRANSMISSION CHARACTERISTIC ADJUSTMENT METHOD - A transmission characteristic adjustment device and the like that can carry out circuit adjustment before an error occurs, and has a transmission characteristic with high reliability without generating an error are provided. | 07-02-2009 |
20090168859 | TRANSMISSION CHARACTERISTIC ADJUSTMENT DEVICE, CIRCUIT BOARD, AND TRANSMISSION CHARACTERISTIC ADJUSTMENT METHOD - A transmission characteristic adjustment device with high reliability in a transmission characteristic that can adjust a circuit before an error occurs and does not generate an error is provided. A transmission characteristic adjustment device that adjusts a transmission characteristic between a transmission element and a receiving element interposing a transmission path, includes: a sight test circuit that is provided on the receiving element side and detects an eye pattern aperture; a margin calculation circuit that calculates a margin with respect to a mask included in the detected eye pattern aperture; a circuit element adjustment circuit that evaluates a setting value of a circuit element of the transmission element or the receiving element having influence on a receiving waveform based on fluctuation of the calculated margin, and changes the setting value of the circuit element of the transmission element or the receiving element based on a result of the evaluation. | 07-02-2009 |
20090294169 | PRINTED CIRCUIT BOARD FABRICATION METHOD, PRINTED CIRCUIT BOARD OBTAINED THEREBY, AND PRINTED CIRCUIT BOARD FABRICATION APPARATUS - A printed circuit board includes a through hole constituted by a hole penetrating through the front and rear surfaces of the printed circuit board. A fabrication method of the printed circuit board, includes applying conductive material plating to the inner wall surface of the hole to form a through hole electrically connecting the front and rear surfaces of the printed circuit board, and removing the conductive material plated on the hole inner wall surface at least at a portion between the front and rear surfaces of the printed circuit board is carried out to thereby fabricate a printed circuit board having a through hole electrically isolates the front surface of the printed circuit board from the rear surface thereof. | 12-03-2009 |
20100030358 | AUTOMATIC WIRING APPARATUS, AUTOMATIC WIRING METHOD, AUTOMATIC WIRING PROGRAM AND COMPUTER-READABLE RECORDING MEDIUM ON WHICH THE PROGRAM IS RECORDED - In order to make it possible to automatically execute a wiring process which satisfies not only a design condition but also design quality relating to an electric characteristic, according to the embodiment, an automatic wiring apparatus includes a design condition changing section for changing a design condition in accordance with priority information regarding the design condition where a wiring process which satisfies the design condition cannot be carried out by a first wiring processing section, a quality allowability decision section for deciding whether or not quality of a wiring region can be allowed where a wiring process which satisfies the design condition after the changing can be executed by a second wiring processing section and an outputting section for outputting a result of the wiring process of the wiring region by the second wiring processing section if it is decided that the quality of the wiring region can be allowed. | 02-04-2010 |
20100072977 | ELECTRONIC DEVICE AND TEST METHOD OF ELECTRONIC DEVICE - An electronic device includes a receiver receiving a signal, a driver outputting a signal, and at least one of an amplitude measuring device having an amplitude detector connected to an input end of the receiver and a jitter measuring device having a phase detector connected to an output end of the receiver. An output end of the driver and an input end of the receiver are connected to measure at least one of the amplitude and jitter of the driver output. | 03-25-2010 |
20130049848 | ELECTRONIC COMPONENT AND REFLECTED-WAVE CANCELLING METHOD - An electronic component includes a driver that outputs a signal to a reception apparatus; a storage device storing therein reflection information related to a reflected wave that returns to the driver when the signal is reflected back by the reception apparatus; a reflected wave detector that based on the reflection information, determines a measurement period for measuring the reflected wave and that based on the measurement period, measures an arrival time and a peak amplitude of the reflected wave; and a controller that based on the arrival time and the peak amplitude, extracts reflected-wave cancelling information for inhibiting effects of the reflected wave from the reception apparatus and that sets the extracted reflected-wave cancelling information in the driver. | 02-28-2013 |