摘要:
A data access apparatus and method are provided. The data access apparatus includes a first memory, a second memory and a memory controller. The first memory and the second memory have the same memory capacity for respectively storing the neighbor data of an image. The memory controller is coupled to the first memory and the second memory for providing shared control signals and shared address signals, and further providing a plurality of first address signals and a plurality of second address signals to the first memory and the second memory respectively. The memory controller dynamically accesses the first memory and the second memory by different column address strobe (CAS) signal of the shared control signals, the first address signals and the second address signals.
摘要:
A control system for memory access includes a system memory access command buffer, a memory access command parallel processor, a DRAM command controller and a read data buffer. The system memory access command buffer stores plural system memory access commands. The memory access command parallel processor is connected to the system memory access command buffer for fetching and decoding the system memory access commands to plural DRAM access commands, storing the DRAM access commands in DRAM bank command FIFOs, and performing priority setting according to a DRAM bank priority table. The DRAM command controller is connected to the memory access command parallel processor and a DRAM for receiving the DRAM access commands, and sending control commands to the DRAM. The read data buffer is connected to the DRAM command controller and the system bus for storing the read data and rearranging a sequence of the read data.
摘要:
A memory managing method for video data decoding process is provided. The memory managing method includes the following steps. A first frame having a first definition is stored, wherein the first frame is a first type or a second type. A second frame having the first definition is stored, wherein the second frame is the first type or the second type. A first frame having a second definition is stored in the memory space where the first frame having the first definition was originally stored, and the remaining memory space left after the original first frame having the first definition had been stored is released, wherein the memory space for storing the first frame having the first definition is greater than the memory space for storing the first frame having the second definition. A third frame having the second definition is stored, wherein the third frame is a third type.
摘要:
A memory managing method for video data decoding process is provided. The memory managing method includes the following steps. A first frame having a first definition is stored, wherein the first frame is a first type or a second type. A second frame having the first definition is stored, wherein the second frame is the first type or the second type. A first frame having a second definition is stored in the memory space where the first frame having the first definition was originally stored, and the remaining memory space left after the original first frame having the first definition had been stored is released, wherein the memory space for storing the first frame having the first definition is greater than the memory space for storing the first frame having the second definition. A third frame having the second definition is stored, wherein the third frame is a third type.
摘要:
A method and an apparatus for decoding video image data including a plurality of frames are provided. Each of the frames includes a reserved portion and a non-reserved portion. The method comprises decoding only the non-reserved portion of one of the frames and displaying the decoded non-reserved portion of the frame and the reserved portion of a previously decoded frame. The apparatus comprises a decoding device to decode the non-reserved portion of one of the frames and a displaying device to display the reserved portion of a previously decoded frame and the decoded non-reserved portion of the frame.
摘要:
A method and a chip for expanding pins of a chip are disclosed. A first interface of a first chip transmits an encoded second interface command. When a second chip receives the encoded second command, a second chip decodes the encoded second interface command and transmits allowing the pins of the second chip to transmit the second interface command and thereby achieve the expansion of pins of the first chip. Because of the low pin count of the second chip that can accommodate pins of the first chip, there is no need to increase the pin count of the first chip, therefore the packaging cost of the first chip is substantially reduced without significantly increasing the packaging cost for the second chip.
摘要:
The present invention provides a memory device with the serial transmission interface and an error correction method for the serial transmission interface. The memory device comprises an error correction mechanism to detect or automatically correct the error earlier to make sure the correctness of the data transmission while the serial transmission interface accesses the memory. Further, the action of error corrections and data re-transmissions performed by the master device can be reduced.
摘要:
A method and a chip for expanding pins of a chip are disclosed. A first interface of a first chip transmits an encoded second interface command. When a second chip receives the encoded second command, a second chip decodes the encoded second interface command and transmits allowing the pins of the second chip to transmit the second interface command and thereby achieve the expansion of pins of the first chip. Because of the low pin count of the second chip that can accommodate pins of the first chip, there is no need to increase the pin count of the first chip, therefore the packaging cost of the first chip is substantially reduced without significantly increasing the packaging cost for the second chip.
摘要:
A method for bi-directional motion compensation is provided. The method comprises: adding the predicted error twice, the first predictor, and one to obtain a first calculation result; wherein if the first calculation result is larger than a maximum positive value storable in the register, either the maximum positive value or a value of the maximum positive value minus one is stored in the register, otherwise the first calculation result is stored in the register; adding the value stored in the register and the second predictor to obtain a second calculation result; wherein if the second calculation result is larger than the maximum positive value storable in the register, either the maximum positive value or the value of the maximum positive value minus one is stored in the register, if the second calculation result is smaller than zero, a zero is stored in the register, otherwise the second calculation result is stored in the register; right-shifting the value one bit to obtain the pixel data.
摘要:
A control system for memory access includes a system memory access command buffer, a memory access command parallel processor, a DRAM command controller and a read data buffer. The system memory access command buffer stores plural system memory access commands. The memory access command parallel processor is connected to the system memory access command buffer for fetching and decoding the system memory access commands to plural DRAM access commands, storing the DRAM access commands in DRAM bank command FIFOs, and performing priority setting according to a DRAM bank priority table. The DRAM command controller is connected to the memory access command parallel processor and a DRAM for receiving the DRAM access commands, and sending control commands to the DRAM. The read data buffer is connected to the DRAM command controller and the system bus for storing the read data and rearranging a sequence of the read data.