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:
Jan. 04, 2005
Filed:
Jan. 29, 2001
Takahisa Kawade, Yokohama, JP;
Masayoshi Sekine, Tokyo, JP;
Gaku Watanabe, Tokyo, JP;
Keihiro Kurakata, Kodaira, JP;
Takahisa Kawade, Yokohama, JP;
Masayoshi Sekine, Tokyo, JP;
Gaku Watanabe, Tokyo, JP;
Keihiro Kurakata, Kodaira, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a processor system having a CPU, a RAM, and a communication portion for external communication, the operation of the central processing unit is stopped when an IPL operation mode is selected by an operation mode selection switch. An IPL program transferred from the outside through the communication portion is then written to the RAM starting from a predetermined address, and the stoppage of the operation of the CPU is thereafter canceled. The CPU restarting the operation executes the IPL program written to the RAM by first reading the predetermined address to download a system program. Since the IPL program is transferred from the outside, the IPL program to be used can be easily changed.