JP2011097495A5

JP2011097495A5 -

Info

Publication number: JP2011097495A5
Application number: JP2009251689A
Authority: JP
Filing date: 2009-11-02
Publication date: 2012-12-20
Anticipated expiration: 2029-11-02

Claims

An input section for inputting data;
A buffer for holding data input at the input unit;
A recording medium control unit that controls data writing and data reading to a recording medium that guarantees writing at a first guaranteed speed when writing data of a first size;
Using the recording medium control unit, at a second guaranteed speed higher than the first guaranteed speed, continuously read data held in the buffer by a second size larger than the first size, A controller that writes data read from the buffer to the recording medium;
With
In the second size writing, the second allowable value in the average writing time per the first size is the first size writing time to the recording medium obtained from the first guaranteed speed . The recording device that determines the second guaranteed speed so as to be smaller than a first allowable value.

An input section for inputting data;
A buffer for holding data input at the input unit;
A recording medium that guarantees writing at a first guaranteed speed when writing data of a first size;
A recording medium control unit for controlling writing and reading of data to and from the recording medium;
Using the recording medium control unit, at a second guaranteed speed higher than the first guaranteed speed, continuously read data held in the buffer by a second size larger than the first size, A controller that writes data read from the buffer to the recording medium;
With
In writing of the second size, the second tolerance value in the average write time per the first size, the writing time of the first size on the recording medium obtained from said first guaranteed rate The recording device that determines the second guaranteed speed so as to be smaller than a first allowable value.

A generator for generating data;
A buffer for holding data output by the generation unit;
A recording medium control unit that controls data writing and data reading to a recording medium that guarantees writing at a first guaranteed speed when writing data of a first size;
Using the recording medium control unit, at a second guaranteed speed higher than the first guaranteed speed, continuously read data held in the buffer by a second size larger than the first size, A controller that writes data read from the buffer to the recording medium;
With
In writing of the second size, the second tolerance value in the average write time per the first size, the writing time of the first size on the recording medium obtained from said first guaranteed rate The recording device that determines the second guaranteed speed so as to be smaller than a first allowable value.

The buffer is
The ratio of the second size to the first size is α,
When the ratio of the second guaranteed speed to the first guaranteed speed is β,
The recording apparatus according to claim 1, wherein the recording apparatus has a capacity of {(α−α / β) +1} times or more of the first size.

The buffer is
The ratio of the second size to the first size is α,
When the ratio of the second guaranteed speed to the first guaranteed speed is β,
The recording apparatus according to claim 1, wherein the recording apparatus has a capacity that is at least {2 × (α−α / β) +1} times the first size.

The recording medium is
An SD (Secure Digital) card,
The recording apparatus according to claim 1, wherein the first size is an AU (Allocation Unit) in the SD card.

The recording medium is
The recording apparatus according to claim 1, wherein the first size is an erase size of the flash memory.