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:
May. 22, 2001
Filed:
Sep. 30, 1998
Dean L. Scoville, Auburn, CA (US);
David A. Kumpf, Rocklin, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A method for preventing a hung state of a peripheral, the peripheral being connected by a protocol channel through a server to a network, and the network having a client. For certain types of peripherals, e.g. scanner control language peripherals, the present invention sends a reset sequence to the peripheral and then checks for a data flow between the client and the peripheral during a check data time period. Additionally, the invention sends an unlock sequence to the peripheral after the check for data time period expires. Thereafter, the present invention waits for an insurance time period to expire and then closes the protocol channel between the client and the peripheral. The present invention also waits for a response from the peripheral.