Information processing apparatus, data erasure managing method and computer program

• US 8,797,584 B2
• Filed: 06/18/2012
• Issued: 08/05/2014
• Est. Priority Date: 06/27/2011
• Status: Active Grant

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Akiba, Tomohiro
• Primary Examiner(s): Zimmerman, Mark
• Assistant Examiner(s): TAGGART, MARCHELLE
• Application Number:
  US13/526,178
• Publication Number:
  US 20120327464A1
• Time in Patent Office: 778 Days
• Field of Search: 358/1.15
• US Class Current: 358/1.15
• CPC Class Codes: G06K 15/1806 Receiving job control commands
• CPC Class Codes: G06K 15/1817 Buffers
• CPC Class Codes: G06K 15/1823 for evaluating the resources needed, e.g. rasterizing time, ink, paper stock

Abstract

An information processing apparatus comprises: a first storing unit which stores a job; a performing unit which performs the job stored in the first storing unit; an erasing unit which performs overwriting erasure of the job performed by the performing unit; a first recording unit which records first time information indicating a time when the performance of the job by the performing unit is completed, for each job; a second recording unit which records second time information indicating a time when the overwriting erasure of the job stored in the first storing unit is completed by the erasing unit; and a predicting unit which predicts, for each job, whether or not the erasure of the job was completed, based on the first time information and the second time information.

Claims

1. An information processing apparatus comprising:

a storage unit configured to store a job;

a performing unit configured to perform the job stored in the storage unit;

an erasing unit configured to perform overwriting erasure of data stored in the storage unit, asynchronously with finishing of the job;

a recording unit configured to record, for each job, a finish time when the performance of the job is finished;

an updating unit configured to update an erasure completion time each time the overwriting erasure of data stored in the storage unit is completed; and

a judging unit configured to judge, for each job, that the erasure of the job is completed, if the finish time of the job is earlier than a current erasure completion time, and that the erasure of the job is not completed, if the finish time of the job is not earlier than the current erasure completion time.

2. The information processing apparatus according to claim 1, wherein the judging unit judges that the erasure of the job was completed, in a case where the time indicated by the erasure completion time is later than the time indicated by the finish time.

3. The information processing apparatus according to claim 1, further comprising a displaying unit configured to display a judging result by the judging unit for each job.

4. The information processing apparatus according to claim 1, wherein the finish time is stored in the storage unit.

5. The information processing apparatus according to claim 1, wherein the information erasure completion time is stored in the storage unit.

6. An information processing method comprising:

storing a job;

performing the stored job;

performing overwriting erasure of data, asynchronously with finishing of the job;

recording, for each job, a finish time when the performance of the job is finished;

updating an erasure completion time each time the overwriting erasure of data is completed; and

judging, for each job, that the erasure of the job is completed, if the finish time of the job is earlier than a current erasure completion time, and that the erasure of the job is not completed, if the finish time of the job is not earlier than the current erasure completion time.

7. A non-transitory computer-readable medium which stores a computer program for causing a computer to perform an information processing method comprising:

storing a job;

performing the stored job;

performing overwriting erasure of data, asynchronously with finishing of the job;

recording, for each job, a finish time when the performance of the job is finished;

updating erasure completion time each time when the overwriting erasure of data is completed; and

judging, for each job, that the erasure of the job is completed, if the finish time of the job is earlier than a current erasure completion time, and that the erasure of the job is not completed, if the finish time of the job is not earlier than the current erasure completion time.