參數(shù)資料
型號： μSAP70300-B03
廠商： NEC Corp.
元件分類： 8位微控制器
英文描述： 8 Bit Single Chip Microcontrollers
中文描述： 8位單片機微控制器
文件頁數(shù)： 48/102頁
文件大小： 282K
代理商： ΜSAP70300-B03
38
μ
SAP703000-B03 USER'S MANUAL
The following two types of processing information can be set by the libraries:
<1> Processing information that can be set by parameters
The user can set parameters in an application for the following six items:
Huffman table
Quantization table
Sampling ratio (1)
Restart marker
Screen size (horizontal, vertical)
Coordinates (x, y)
<2> Processing information that can be selected by the libraries
The user can select parameters for the following three items from the libraries.
Sampling ratio (2)
VRAM (YCbCr/RGB)
Huffman expansion procedure
2.1.1 Processing Information for Which Parameters Can Be Set
The items for which the user can set parameters in an application are as follows. For details, see
Section
2.5
.
(1) Huffman table
Set four Huffman tables, for the DC luminance component, AC luminance component, DC chrominance
component, and AC chrominance component.
Compression
Although a default table is provided, a user-defined table can also be set.
Expansion
The value in the DHT header is used.
(2) Quantization table
Set two quantization tables for the luminance and chrominance components.
Compression
Although a default table is provided, a user-defined table can also be set.
A parameter called Quality is also provided in a library. A defined table processed with
Quality specified is handled as a quantization table.
Expansion
The value in the DQT header is used.
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