參數資料
型號: IMAGELINK-50-USB20
廠商: Electronic Theatre Controls, Inc.
英文描述: IMAGELINK-50-USB2.0
中文描述: 圖片鏈接- 50 - USB2.0接口
文件頁數: 12/28頁
文件大?。?/td> 641K
代理商: IMAGELINK-50-USB20
I
MAGE
L
INK
-50
PAGE
12
OF
5
DISTEC GMBH
Industriestrasse 1 D-82110
Germering
30.3.2004/sw1
http://www.distec.de
Tel.: +49-89-89 43 63-0
Fax: +49-89-89 43 63-39
SPECIFICATION
3.2.3 GET_TRANSFER_COUNTER
The GET_TRANSFER_COUNTER is intended for controlling the number of transferred pixels.
At start of a transmission of one picture bitmap the counter has to be 320x240 pixels (1). For
each transferred pixel the counter will decremented. After transferring a complete picture bitmap
of 320x240 pixels the counter is automatically reinitialized and at a value of 320x240 pixels (1).
Request
bmRequest
Type
bRequest
wValue wIndex
wLength
Data
1.-4.
Byte
value[4]
5.
Byte
0xB6
GET_
TRANSFER_
COUNTER
mode:
value:
0xC0
0xB6
mode
0x0000
0x0005
0: get actual value
1: get stored default value (1)
value[0] = couter_byte_0
value[1] = couter_byte_1
value[2] = couter_byte_2
value[3] = couter_byte_3
(1) at present there is only a fixed value:
couter_byte_0 = 0x00
couter_byte_1 = 0xc2
couter_byte_2 = 0x01
couter_byte_3 = 0x00
this is corresponding to 320x240 pixels
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