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. 29, 2003
Filed:
Jun. 23, 1999
Fumio Nagasaka, Nagano-ken, JP;
Yutaka Hisamatsu, Ngagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Device abstraction units and respectively transmit various pieces of control information and data to and from devices and and carry out abstraction of the devices and (that is, abstraction of the hardware) with respect to upper constituents. Interface units and transmit various pieces of control information and data to and from the device abstraction units and and provide an application unit with an identical interface. Communications path abstraction units and carry out abstraction of communications paths and in the process of transmission of various pieces of control information and data via the communications paths and across a process boundary or a network boundary. This arrangement of the present invention enables a substantially fixed control according to an applications program, regardless of the type of the device or the type of the communications path.