The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2008
Filed:
Feb. 11, 2004
Kanji Otsuka, Higashiyamato-shi, Tokyo 207-0002, JP;
Tamotsu Usami, Kokubunji-shi, Tokyo 185-0035, JP;
Kanji Otsuka, Higashiyamato-shi, Tokyo 207-0002, JP;
Tamotsu Usami, Kokubunji-shi, Tokyo 185-0035, JP;
Other;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Sony Corporation, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Fujitsu Limited, Kanagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Renesas Technology Corp., Tokyo, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
Apparatus for transmitting a digital signal within, for example, an integrated circuit includes a signal transmission line with a directional coupler at one or both ends. The directional coupler blocks the direct-current component of the digital signal while transmitting the alternating-current component, including enough higher harmonics to transmit a well-defined pulse waveform. A suitable directional coupler consists of two adjacent line pairs in materials with different dielectric constants. The apparatus may also include a driver of the inverter type, a receiver of the differential amplifier type, a terminating resistor, and a power-ground transmission line pair for supplying power to the driver. An all-metallic transmission-line structure is preferably maintained from the output interconnections in the driver to the input interconnections in the receiver.