Pillsbury Madison & Sutro LLP
Discrete cosine transformation circuit
A high-speed discrete cosine transformation circuit includes the one-dimensional input signals x(0) to x(7) being input in parallel to the positive input terminals "+" or the negative input terminals "-" of eight neural operation units (NOU) 11 to 18 through capacitors d0 to d6. In each NOU 11 to 18, input signals x(0) to x(7) are added and subtracted. Input signals x(0) to x(7) are multiplied beforehand by the coefficient in proportion to the capacities of capacitors d0 to d6 which are connected to NOU 11 to 18. Thereafter, discrete cosine transforming coefficients y(0) to y(7) are output. A two-dimensional discrete cosine transformation circuit is realized by using the one-dimensional discrete cosine transforming circuit.
Yozan Inc. Sharp Kabushiki Kaisha
G G
G06G G06F
inventional inventional
Chanming Guoliang Jie Sunao
Zhou Shou Chen Takatori