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.:

US 6720801 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 13, 2004

Filed:

Jun. 18, 2001
Applicant:
Inventor:

Christian Lauritz Houlberg, Ventura, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 3/00 ; H03K 1/90175 ; G06K 3/00 ; G06K 1/300 ; G06K 2/302 ;
U.S. Cl.
CPC ...
H03K 3/00 ; H03K 1/90175 ; G06K 3/00 ; G06K 1/300 ; G06K 2/302 ;
Abstract

A monitoring apparatus which allows the user to monitor transmit and receive data of half duplex communications taking place over a full duplex RS-232 bus and also monitor full duplex communications on the RS-232 bus. The monitoring apparatus includes six switching transistors which are turned on and off depending on input voltage levels appearing at the transmit and receive lines input to the monitoring apparatus from the RS-232 bus. Turning on and off the switching transistors enables a computer, lap top or other device connected to the monitoring apparatus to receive and process data communications on the RS-232 bus.


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Houlberg, Christian. (2004). Rs-232 bus data tap apparatus (U.S. Patent No. 6720801). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6720801

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