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參數(shù)資料
| 型號： | IBM39MPEGCS24EPFA16C |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | CS24 Digital Audio/Video Decoders |
| 中文描述： | CS24數(shù)字音頻/視頻解碼器 |
| 文件頁數(shù)： | 16/25頁 |
| 文件大?。?/td> | 112K |
| 代理商： | IBM39MPEGCS24EPFA16C |
IBM39MPEGS42x
IBM39MPEGSI
MPEG S422, MPEG S420 and MPEG SI Encoders
SI Encoder Operations/Features
16 of 25
Sseries_sds_071701.fm.
02
July 17, 2001
4:2:2 to 4:2:0 Chroma Conversion Operation
Input video data can be in either the 4:2:2 or 4:2:0 format. The encoded output format can also be 4:2:2 or 4:2:0.
Valid combinations of these formats in and out of the encoder are shown in Table . When the video source format is
4:2:2 and the encoded output format is 4:2:0, a conversion from 4:2:2 to 4:2:0 will need to be done. The encoder
can internally perform the 4:2:2 to 4:2:0 conversion.
The encoder supports four chroma conversion modes. Host Register X’04’ bits 4-3 are used to select the chroma
conversion mode. The choices are: frame convert, field convert, drop field and output convert An on-chip 2 tap
filter is used in each conversion mode. The contents of Host Register X’04’ bits 4-3 remain effective until changed
by the user. This register may be changed on any input picture boundary, during input picture gaps. The encoder
allows this parameter to be dynamically changed while encoding is in progress. If a change to this parameter is
processed between fields of a given input frame, the result is unpredictable. There is no internal provision to
prevent this register from being changed between a pair of odd/even fields that make up a frame. In all conversion
modes, except drop field the filter coefficients are 1/2.
Two adjacent vertical frame pixels are used to produce one chroma pixel in frame convertmode.
Two adjacent vertical pixels of the same field are used to produce one chroma pixel in field convertmode.
The chroma data in the even field is dropped, and the chroma data in the odd field is used for the entire picture in
drop fieldmode.
Field convertmode is used for field encoding and frame convertmode is used for frame encoding in the output
convertmode.
If the user requires a more accurate filter (i.e. a long tap filter), then it is recommended that an external conversion
method be used.
Maximum Video Resolution
4:2:0
Luminance
4:2:0
Chrominance
4:2:2
Luminance
4:2:2
Chrominance
NTSC
60fps (1)
720x256
360x128
720x256
360x256
NTSC
30Fps (2)
720x512
360x256
720x512
360x512
PAL
50fps (1)
720x304
360x152
720x304
360x304
PAL
25Fps (2)
720x608
360x304
720x608
360x608
Note: (1) fps = fields per second (2) Fps = frames per second
相關PDF資料 |
PDF描述 |
|---|---|
| IBM39MPEGCS24PFA16C | CS24 Digital Audio/Video Decoders |
| IBM39MPEGCS24 | Connector,Hybrid D-Shell,PCB Mnt,PLUG,12+5 Contacts,SKT,PC TAIL Terminal,HOLE .112-.124 |
| IBM39MPEGCS24DEPFA16C | CS24 Digital Audio/Video Decoders |
| IBM43GAENGP0001 | Telecommunication IC |
| IBM43RCLNA1115 | RF AMPLIFIER|SINGLE|BIPOLAR|TSSOP|8PIN|PLASTIC |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IBM39MPEGCS24LFB16C | 制造商:IBM 功能描述: |
| IBM39MPEGCS24PFA16C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CS24 Digital Audio/Video Decoders |
| IBM39MPEGCS24PFB16C | 制造商:IBM 功能描述: |
| IBM39MPEGS420PBA18C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| IBM39MPEGS422PBA17C | 制造商:IBM 功能描述: 制造商:IBM 功能描述:Video/TV Circuit, Video PROCESSING/ENDEC FOR MPEG, 352 Pin, Plastic, BGA |
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