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參數資料
| 型號： | ZR36016 |
| 廠商： | Zoran Corporation |
| 英文描述： | JPEG Pre- and Post-Processor(JPEG 先-后處理器) |
| 中文描述： | JPEG格式前和后處理器（JPEG格式先-后處理器） |
| 文件頁數： | 18/36頁 |
| 文件大?。?/td> | 228K |
| 代理商： | ZR36016 |
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18
Integrated Color Space / Raster-To-Block Converter
Figure 18 shows the processing area in compression when
PAY = 0, with the number of processed lines in a single frame
unknown and determined by the falling edge of VIN.
The ZR36016 counts the number of lines in the processing
range and enters this in the NOL (Number Of Lines) register. If
the number of lines is not a multiple of 8 or 16, depending upon
the format as shown in Table 15, then the number is corrected
to be a proper multiple and entered in the register. When
RSTR=1, the number of lines need not be a multiple of 8 or 16.
If a VIN rising edge is not encountered after 64K lines, process-
ing is terminated with NOL=64K.
GO/STOP Register and the START Signal
The GO/STOP register enables processing by the ZR36016 and
terminates it, but it is the START signal in concert with STOP/
GO that determines which VIN will be recognized and its asso-
ciated data compressed, and which VIN will be recognized and
trigger data output in expansion. The figures below show two
examples for single frame mode, where a single frame is pro-
cessed. Figure 19 is when START is held high and the control is
accomplished with the GO/STOP register. Figure 20 shows
control with the START signal after the register has been set.
The timing of FBSY is for compression, with the end of scan
signal EOS being output from the ZR36016 to the ZR36050. In
both cases, the GO/STOP register will be cleared after process-
ing a single frame and it must be re-enabled to begin processing
the next frame.
HIN
V
Processing Area
EOS Output
Figure 18. Processing Area When PAY = 0
W
N
VIN
START
EOS
Figure 19. Processing Controlled by GO/STOP Register in
Single Frame Compression Mode (CNTI = 0)
FBSY
GO SET
Figures 21 and 22 show compression operation in sequential
mode, with control by START and the GO/STOP register.
GO/STOP, START And FBSY Timing
When compressing, processing will start at the rising edge of
VIN, if both the GO/STOP register is set and START is high
before the rising edge of VIN. The time A shown in Figure 23
below must be greater than 0 in compression. In expansion, the
time A must be sufficient to allow the first strip of the image (the
minimum number of PAY lines, either 8 or 16 as shown in
Table 19) to be read in from the ZR36050 and stored in the strip
buffer. If the VIN rising edge occurs before the strip has been
completely expanded by the ZR36050 and loaded in the strip
buffer, either after the first GO (or START) or after completion of
the previous image in sequential mode, the VIN will be ignored
and the image will be output after the next VIN rising edge. In
case of images that were compressed as interlaced fields, care
must be taken to avoid mis-registration of fields.
During compression FBSY goes high at the rising edge of VIN
and goes low after the active window has been processed.
VIN
START
EOS
Figure 20. Processing Controlled by START Signal in Single
Frame Compression Mode
FBSY
GO SET
Ignored
VIN
START
EOS
Figure 21. Sequential Mode Operation (CNTI = 1)
with START Control
FBSY
GO SET
Ignored
Ignored
VIN
START
EOS
Figure 22. Sequential Mode Operation with
GO/STOP Control
FBSY
GO SET
Ignored
Ignored
Ignored
Ignored
GO/STOP CLEARED (START Ignored)
相關PDF資料 |
PDF描述 |
|---|---|
| ZR36050 | JPEG Image Compression Processor(JPEG 圖象壓縮處理器) |
| ZR36060 | Integrated JPEG Codec(集成JPEG編解碼器) |
| ZR36060 | Circular Connector; No. of Contacts:19; Series:; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:14; Circular Contact Gender:Socket; Circular Shell Style:Cable Receptacle; Insert Arrangement:14-19 |
| ZR36060PQC | Integrated JPEG CODEC |
| ZR36067 | AV PCI CONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ZR36016PQC | 制造商:ZORAN 功能描述: |
| ZR36016PQC-30 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:INTEGRATED COLOR SPACE / RASTER-TO-BLOCK CONVERTER |
| ZR36050 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:JPEG IMAGE COMPRESSION PROCESSOR |
| ZR36050PQC-21 | 制造商:ZORAN 功能描述: |
| ZR36050PQC27 | 制造商:ZORAN 功能描述:* |
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