Abstract: A progressive JPEG image decoding method is provided. In the decoding method, a non-zero history table and a sign table of each variable length decoding (VLD) result are recorded and used as a reference for decoding the next scan layer. The decoded coefficients are no longer directly stored in a memory so as to save the memory space. Accordingly, an image can be decoded and displayed correctly even with limited memory space.

Abstract: A collection process for precipitated powder substance is mainly for storing toxic or highly radioactive powder or dust in air and involves collection operation in water or other liquid to collect powder insoluble to the liquid and heavier than the liquid. To be suitable for underwater operation, a powder precipitation bag is provided with an innovative powder collection can at its bottom. New powder collection can has a mesh filter in its bottom and two-stage structure. After completion of powder collection, the collection can is pulled up from the water and dried to reduce powder volume and form powder lumps. Then, the top half is removed, so the collection can is fully filled with powder lumps. The newly designed powder can increases storage efficiency and reduces waste of space by accommodating more powder lumps than traditional powder can. With the same total amount of powder, the new powder can enables fewer number of storage cans.

Abstract: The main objective of the present invention is to provide maintenance mechanism for lighting equipment in a closed space of high radiation activity, which comprises a passage, a lamp base, a multi-section slide rail, a lighting handle, a stainless steel fixation plate, a lead glass lamp guard and a convex lead plug. On the top side of the passage there is a multi-section slide rail with the lamp base attached to move the lamp. The maintenance hole end of the passage has a convex lead plug and a stainless steel fixation plate. When the hole closes, the convex lead plug is locked to the lead plug positioning screw under the stainless steel fixation plate; while the maintenance hole opens, on the top right and top left of the stainless steel fixation plate there is a L-shaped short iron plate and a L-shaped long iron plate respectively. On the L-shaped long iron plate there is an axial screw as the axis for the convex lead plug to move and rotate.

Abstract: A progressive JPEG image decoding method is provided. In the decoding method, a non-zero history table and a sign table of each variable length decoding (VLD) result are recorded and used as a reference for decoding the next scan layer. The decoded coefficients are no longer directly stored in a memory so as to save the memory space. Accordingly, an image can be decoded and displayed correctly even with limited memory space.

Abstract: A method for progressive JPEG image decoding and a method for controlling a decoder are disclosed. In the image decoding method, an amount of macroblocks that can be stored during the process of decoding is determined according to the size of the memory, and then, according to the amount of macroblocks, a scan layer is divided into a plurality of decoding areas. In each turn of decoding, data of the same decoding area in all the scan layers are decoded. In the next turn, a decoding area next to the previous one is selected for decoding. Therefore, the present invention can decode the image correctly with a limited memory resource, without affecting the display quality of the image. The image decoding method also can be applied to the control of a decoder, so as to reduce the occupied memory capacity.