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:
Mar. 22, 2005
Filed:
Oct. 31, 2001
Hiep P. Ngo, Boston, MA (US);
William B. Gist, Chelmsford, MA (US);
Hiep P. Ngo, Boston, MA (US);
William B. Gist, Chelmsford, MA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
A bi-directional input/output (IO) cell for transmitting and receiving data signals simultaneously over a single line. The bidirectional IO cell having an IO node adapted to connect to the line. A driver has an output connected to the line and an input for receiving a core output signal. A first differential amplifier has a first input connected to the IO node and a second input connected to a high voltage reference circuit. A second differential amplifier has a first input connected to the IO node and a second input connected to a low voltage reference circuit.