Apparatus and method for correcting information storage position

• US 20010016792A1
• Filed: 02/15/2001
• Published: 08/23/2001
• Est. Priority Date: 02/18/2000
• Status: Active Grant

• Current Assignee: Pioneer Corporation
• Original Assignee: Pioneer Corporation
• Inventors: Matsuo, Kazunori
• Granted Patent: US 6,442,461 B2
• Time in Patent Office: Days
• US Class Current: 701/35
• CPC Class Codes: G11B 19/02 Control of operating function, e.g. switching from recording to reproducing
• CPC Class Codes: G11B 19/247 using electrical means

Abstract

An information read/write apparatus which can determine the condition under which defragmentation can be performed without causing the storage medium to be affected by running or mechanical vibration of the mobile body. The information read/write apparatus reads and records information on an information storage medium, mounted on a mobile body and allowing information to be read and recorded thereon. The apparatus comprises detection means for detecting that the mobile body is at a standstill. The apparatus also comprises control means for controlling reading and recording of information to relocate information stored on the information storage medium from one to another different position on the information storage medium while the mobile body is being detected to be at a standstill in accordance with output of the detection means.

Claims

1. An information read/write apparatus for reading and recording information on an information storage medium, mounted on a mobile body and allowing information to be read and recorded thereon, comprising:

detection means for detecting that said mobile body is at a standstill, and

control means for controlling reading/recording of information to relocate information stored on said information storage medium from one to another different position on said information storage medium while said mobile body is being detected to be at a standstill in accordance with output of said detection means.

2. The information read/write apparatus according to

claim 1

, wherein said control means controls reading and recording of information to relocate information stored on said information storage medium from one to another different position on said information storage medium when said mobile body is detected to be at a standstill for a predetermined length of time or more in accordance with the output from said detection means.

3. An information read/write apparatus for reading and recording information on an information storage medium, mounted on a mobile body and allowing information to be read and recorded thereon, comprising:

detection means for detecting that said mobile body is at a standstill,

read means for reading information on another information storage medium different from said information storage medium; and

control means for controlling a relocation of information stored on said another information storage medium different from said information storage medium onto said information storage medium when said mobile body is detected to be at a standstill for a predetermined length of time or more in accordance with output from said detection means.

4. An information read/write apparatus for reading and recording information on an information storage medium, mounted on a mobile body and allowing information to be read and recorded thereon, comprising:

a detector for detecting that said mobile body is at a standstill, and

a controller for controlling reading/recording of information to relocate information stored on said information storage medium from one to another different position on said information storage medium while said mobile body is being detected to be at a standstill in accordance with output of said detection means.

5. The information read/write apparatus according to

claim 4

, wherein said controller controls reading and recording of information to relocate information stored on said information storage medium from one to another different position on said information storage medium when said mobile body is detected to be at a standstill for a predetermined length of time or more in accordance with the output from said detector.

6. An information read/write apparatus for reading and recording information on an information storage medium, mounted on a mobile body and allowing information to be read and recorded thereon, comprising:

at least one detector for detecting that said mobile body is at a standstill,

a reader for reading information on another information storage medium different from said information storage medium; and

a controller for controlling a relocation of information stored on said another information storage medium different from said information storage medium onto said information storage medium when said mobile body is detected to be at a standstill for a predetermined length of time or more in accordance with output from said detector.

7. A method for correcting an information storage position in which a relocation processing is executed on sectors of an information storage medium, mounted on a mobile body and allowing information to be read and recorded thereon, said method comprising the steps of:

determining that said mobile body is at a standstill; and

controlling reading/recording of information to relocate information stored on said information storage medium from one to another different position on said sector of said information storage medium while said mobile body is being determined to be at a standstill in accordance with output of said determination.

8. The method for correcting an information storage position according to

claim 7

, wherein reading and recording of information is controlled to relocate said information stored on said information storage medium from one to another different position on said sector of said information storage medium when said mobile body is determined to be at a standstill for a predetermined length of time or more in accordance with said output from said determination.

9. The method for correcting an information storage position according to

claim 7

, wherein it is determined that said mobile body is at a standstill when an ACC power supply is OFF.

10. The method for correcting an information storage position according to

claim 7

, wherein it is determined that said mobile body is at a standstill when vehicle speed pulse is not detected.

11. A method for correcting an information storage position in which a relocation processing is executed on sectors of an information storage medium, mounted on a mobile body and allowing information to be read and recorded thereon, said method comprising the steps of:

detecting whether vehicle speed pulse is present or not;

starting said relocation processing when said vehicle speed pulse is not detected;

determining whether said relocation processing is completed;

detecting again whether said vehicle speed pulse is present or not when not completed; and

canceling said relocation processing when said vehicle speed pulse is detected.