发明名称 |
DEVICE FOR COMPUTING MONODIMENSIONAL COSINE TRANSFORM |
摘要 |
The invention relates in particular to a device for calculating 16 one-dimensional direct cosine transformations from 16 values representing, for example, the brightness of 16 picture points. It comprises: - an input memory (3); - first calculating means (6) furnishing respectively two values of the form A + B and (A - B) x D, where A and B are two values applied respectively to two inputs of these calculating means (6) and where D is a predetermined coefficient; - first means (4) of storing intermediate values, allowing the first calculating means (16) to be employed again for 32 similar operations; - second calculating means (7) furnishing a value of the form E + G, where E and G are two values applied consecutively to the input of these second calculating means (7); - second means (8) of storing intermediate values, allowing the second calculating means (7) to be used again for 17 addition operations; - a device (9) for changing the order of the transformed values. <??>Application to devices for encoding and decoding television pictures by two-dimensional direct cosine transformation with a view to reducing the quantity of data. <IMAGE> |
申请公布号 |
KR960001276(B1) |
申请公布日期 |
1996.01.25 |
申请号 |
KR19870005711 |
申请日期 |
1987.06.05 |
申请人 |
THOMSON-CSF |
发明人 |
AUBIE, JEAN - YVES;LE PANNERER, YVES - MARIE;FERRE, ALAIN;VILIATON, YANNICK |
分类号 |
G06F17/14;G06T9/00;H04N7/30;(IPC1-7):G06F17/14 |
主分类号 |
G06F17/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|