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:
Apr. 07, 2009
Filed:
Mar. 17, 2005
Applicant:
Hideyuki Watanabe, Kanagawa, JP;
Inventor:
Hideyuki Watanabe, Kanagawa, JP;
Assignee:
Ricoh Company, Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/00 (2006.01); G06F 1/26 (2006.01); G06F 1/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
A main Central Processing Unit (CPU) controls enabling and disabling a function of a network filter, and disables a function of a packet type filter (Transmission Control Protocol (TCP) header filter) during a ready status after a system is powered on. The packet type filter whether a predetermined flag corresponds to a flag included in a TCP header of an Internet Protocol (IP) packet received through a network. The main CPU enables the function in an energy-saving mode, and disables the function when the energy-saving mode transitions to the ready status.