Abstract: A polyimide polymer includes a first monomeric unit from dianhydride and a second monomeric unit from diamine, and the dianhydride includes 1,4-bis(3,4-dicarboxyphenoxy)benzene dianhydride (HQDPA), and coefficient of thermal expansion (CTE) is below 60 ppm/° C. The polyimide film includes a film layer, and the film layer includes the above polyimide polymer. The film layer optionally includes a pigment and an inorganic nanoparticle. Therefore, the thermal resistance and the transparency of the polyimide film are improved, and the polyimide film having high thermal resistances with different colors is available.

Abstract: A method for improving variable length decoding performance is provided. A variable length decoding module decodes a coded data to obtain a decoded data and a subsequent module receives the decoded data to perform further processing. A buffering module is coupled between the variable length decoding module and the subsequent module, and buffers the decoded data decoded by the variable length decoding module. A read part of the buffering module is cleared so that a content of an unused area of the buffering module is a predetermined value when the subsequent module reads the decoded data from the buffering module, wherein the unused area is a part of the buffering module except for the unread decoded data. The variable length decoding module does not write zero values of the decoded data into the buffering module when the variable length decoding module reads a zero output instruction among the coded data.

Abstract: A method for improving variable length decoding performance is provided. A variable length decoding module decodes a coded data to obtain a decoded data and a subsequent module receives the decoded data to perform further processing. A buffering module is coupled between the variable length decoding module and the subsequent module, and buffers the decoded data decoded by the variable length decoding module. A read part of the buffering module is cleared so that a content of an unused area of the buffering module is a predetermined value when the subsequent module reads the decoded data from the buffering module, wherein the unused area is a part of the buffering module except for the unread decoded data. The variable length decoding module does not write zero values of the decoded data into the buffering module when the variable length decoding module reads a zero output instruction among the coded data.