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:
Dec. 30, 1997
Filed:
Nov. 07, 1995
Gyung-Yeol Kim, Seongnam, KR;
SamSung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
A method for interfacing electrical signals transmitted between an engine controller and a video controller through first and second transmission lines in an image forming apparatus includes the steps of: transmitting first data indicating an engine power ready state from the engine controller to the video controller through the first transmission line when power is initially supplied to the engine controller, transmitting second data representive of a print ready state from the engine controller to the video controller through the first transmission line after performing a warm up operation on the image forming apparatus, transmitting third data representing commencement of a printing operation from the video controller to the engine controller through the second transmission line in response to an input of printing data to the video controller from an external source, transmitting fourth data representative of a request for page synchronization information from the engine controller to the video controller through the first transmission line in response to receipt of the third data by the engine controller, and transmitting fifth data representative of the page synchronization information from the video controller to the engine controller through the second transmission line in response to receipt of the fourth data by the video controller. The engine controller performs the printing operation in response to the fifth data.