TW252258B - Two dimensional discrete cosine transform/inverse discrete cosine transform circuit - Google Patents
Two dimensional discrete cosine transform/inverse discrete cosine transform circuitInfo
- Publication number
- TW252258B TW252258B TW84102605A TW84102605A TW252258B TW 252258 B TW252258 B TW 252258B TW 84102605 A TW84102605 A TW 84102605A TW 84102605 A TW84102605 A TW 84102605A TW 252258 B TW252258 B TW 252258B
- Authority
- TW
- Taiwan
- Prior art keywords
- discrete cosine
- cosine transform
- dimensional data
- dct
- dimensional
- Prior art date
Links
Abstract
A real-time two dimensional discrete cosine transform/inverse discrete cosine transform circuit includes: - a rate dual ports buffer for writing a set of NxN word data block with the first speed, after adjusting the data block, then outputting the first one dimensional data with the second speed; - a selector with two input ports among which one port is coupled to the rate dual ports buffer for supplying the first one dimensional data flow in the fist time period, and supplying the second one dimensional data flow from another input port in the second time period; - a one dimensional DCT/IDCT operator coupled to the selector for operating the one dimensional data supplied from the selector; - a row-column transpose buffer coupled to the DCT/IDCT operator for transposing the first one dimensional data after the DCT/IDCT operation and forming the second one dimensional data to the selector; - a inverse rate dual ports buffer coupled to the DCT/IDCT operator for outputting the second one dimensional data after the DCT/IDCT operator with the first speed.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW84102605A TW252258B (en) | 1995-03-18 | 1995-03-18 | Two dimensional discrete cosine transform/inverse discrete cosine transform circuit |
GB9510260A GB2301203B (en) | 1995-03-18 | 1995-05-22 | Real time two dimensional discrete cosine transform/inverse discrete cosine transform circuit |
DE19520962A DE19520962C1 (en) | 1995-03-18 | 1995-06-08 | Two-dimensional discrete real-time cosine transformation circuit or cosine reverse transformation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW84102605A TW252258B (en) | 1995-03-18 | 1995-03-18 | Two dimensional discrete cosine transform/inverse discrete cosine transform circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
TW252258B true TW252258B (en) | 1995-07-21 |
Family
ID=51401449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW84102605A TW252258B (en) | 1995-03-18 | 1995-03-18 | Two dimensional discrete cosine transform/inverse discrete cosine transform circuit |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW252258B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1001663C2 (en) * | 1995-04-15 | 1997-05-21 | United Microelectronics Corp | Device for two-dimensional discrete cosine transformation. |
-
1995
- 1995-03-18 TW TW84102605A patent/TW252258B/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1001663C2 (en) * | 1995-04-15 | 1997-05-21 | United Microelectronics Corp | Device for two-dimensional discrete cosine transformation. |
FR2741977A1 (en) * | 1995-04-15 | 1997-06-06 | United Microelectronics Corp | APPARATUS FOR TRANSFORMING A TWO-DIMENSIONAL DISCRETE COSINUS |
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