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:
Feb. 11, 2020
Filed:
Jan. 04, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Noritsugu Okayama, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Data stored in a hard disk drive (HDD) is processed to generate cache data to be stored in a random access memory (RAM). If a data access request is received from an application and valid cache data corresponding to the access request is present in the RAM, response data is acquired from the RAM, without accessing the HDD, and the response data is transmitted to the source of the access request. If the valid cache data corresponding to the access request is not present in the RAM, response data is acquired from the HDD and the response data is transmitted to the source of the access request. Consequently, the number of times of access to the HDD is reduced.