Information recording/reproducing apparatus and method for processing read/write command thereof

• US 20070143539A1
• Filed: 07/17/2006
• Published: 06/21/2007
• Est. Priority Date: 12/15/2005
• Status: Abandoned Application

• Current Assignee: Hitachi-Lg Data Storage Incorporated (Hitachi, Ltd.)
• Original Assignee: Hitachi-Lg Data Storage Incorporated (Hitachi, Ltd.)
• Inventors: Ichikawa, Norimoto
• Application Number:
  US11/488,544
• Publication Number:
  US 20070143539A1
• Time in Patent Office: Days
• US Class Current: 711/113
• CPC Class Codes: G06F 12/0802 Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
• CPC Class Codes: G11B 19/044 by using a data buffer

Abstract

In an information recording/reproducing apparatus 500, enabling to record/reproduce information onto/from an optical disk medium 301 by means of an optical head 508 and execute commands including Write/Read command from a host computer 200 through an interface controller 502, a buffer memory 503 is provided as a cache for storing therein data to be written/readout, temporarily, wherein determination is made on whether function corresponding to the command is in delay or not, when receiving the write/read command from said upper apparatus, and as a result thereof, when the function is determined to be in delay, data transmission speed from the cache is lowered, thereby preventing the apparatus from falling within the time-out of OS, due to delay in Write/Read operation in the drive side, accompanying with comeback from a sleeping condition, etc.

Claims

1. An information recording/reproducing apparatus, comprising:

an optical head enabling to record/reproduce information onto/from an optical disk medium;

an interface controller circuit for transmitting commands, including write/read command, between an upper apparatus;

a buffer memory for data of said command therein, temporarily; and

a controller for controlling operations of said information recording/reproducing apparatus, wherein

further, said controller is so constructed to perform the following operations;

determining on whether function corresponding to the command is in delay or not, when receiving the write/read command from said upper apparatus; and

lowering data transmission speed from said buffer memory, when the function is determined to be in delay by means of said determination mentioned above.

2. The information recording/reproducing apparatus, as described in the claim 1, wherein the lowering data transmission speed is executed on all of the write/read commands, which are issued from said upper apparatus.

3. The information recording/reproducing apparatus, as described in the claim 2, wherein a delay of about one (1) second is inserted into the data transmission when conducting the lowering data transmission speed.

4. The information recording/reproducing apparatus, as described in the claim 1, wherein the lowering data transmission speed is executed on part of the write/read commands, which are issued from said upper apparatus.

5. The information recording/reproducing apparatus, as described in the claim 1, wherein the lowering data transmission speed is executed on a first command of the write/read commands, which are issued from said upper apparatus.

6. The information recording/reproducing apparatus, as described in the claim 5, wherein a delay of about six (6) second is inserted into the data transmission when conducting the lowering data transmission speed.

7. A method for processing write/read command within an information recording/reproducing apparatus, comprising:

an optical head enabling to record/reproduce information onto/from an optical disk medium;

an interface controller circuit for transmitting commands, including write/read command, between an upper apparatus;

a buffer memory for data of said command therein, temporarily; and

a controller for controlling operations of said information recording/reproducing apparatus, comprising the following steps of;

determining on whether function corresponding to the command is in delay or not, when receiving the write/read command from said upper apparatus; and

lowering data transmission speed from said buffer memory, when the function is determined to be in delay by means of said determination mentioned above.

8. The method for processing write/read command within an information recording/reproducing apparatus, as described in the claim 7, wherein the lowering data transmission speed is executed on all of the write/read commands, which are issued from said upper apparatus.

9. The method for processing write/read command within an information recording/reproducing apparatus, as described in the claim 8, wherein a delay of about one (1) second is inserted into the data transmission when conducting the lowering data transmission speed.

10. The method for processing write/read command within an information recording/reproducing apparatus, as described in the claim 7, wherein the lowering data transmission speed is executed on part of the write/read commands, which are issued from said upper apparatus.

11. The method for processing write/read command within an information recording/reproducing apparatus, as described in the claim 7, wherein the lowering data transmission speed is executed on a first command of the write/read commands, which are issued from said upper apparatus.

12. The method for processing write/read command within an information recording/reproducing apparatus, as described in the claim 11, wherein a delay of about six (6) second is inserted into the data transmission when conducting the lowering data transmission speed.