Abstract: In the scanning conversion apparatus, a first converter converts input interlaced scan data into progressive scan data, and a second converter converting the progressive scan data output from the first converter to interlaced scan data.

Abstract: An arbiter, a system, and a method for generating a pseudo-grant signal in response to a request and receiving target information in response to the pseudo-grant signal. The pseudo-grant signal reduces or eliminates waiting time.

Abstract: A digital data processor comprising a stack storage having a plurality of locations classified into two or more banks, and a stack pointer circuit pointing to one or more stack banks of the stack storage. The stack pointer circuit operates in response to decoding signals from an instruction decoder which decodes a current instruction to determine whether a one-word or a multi-word stack operation is desired.

Abstract: An apparatus and method for controlling a variable bit rate in real time are provided, including an encoding unit for performing a predetermined image conversion on present video data to be encoded and for encoding the video data into a variable bit rate by quantizing the conversion result, and a variable bit rate controller for allocating an overall bit estimate of the video data to be stored in a system to each frame according to a variation in video recording time, for detecting the complexity of frames based on a difference between pixels of the encoded video data and for determining a quantization factor using the detected complexity.

Abstract: A translation look-aside buffer (TLB) capable of reducing power consumption and improving performance of a memory is provided. The fully-associative TLB which converts a virtual address into a physical address, comprises a first TLB having a plurality of banks; a second TLB having a plurality of entries, each of which having one virtual page number and 2N physical page numbers, wherein N is a natural number; and a selection circuit for outputting an output signal of the first TLB to the second TLB in response to a selection signal, wherein each bank of the first TLB has a plurality of entries, each of which has one virtual page number and one physical page number. The size of a page indicated by a virtual page number of the first TLB is different from the size of a page indicated by a virtual page number of the second TLB.

Abstract: Apparatus and method for dispatching a very long instruction word (VLIW) instruction having a variable length are provided. The apparatus for dispatching a VLIW instruction includes a packet buffer for storing at least one or more VLIW instructions, and a decoding unit configured to constitute a VLIW instruction to be currently executed among the VLIW instructions stored in the packet buffer and decode predetermined bits of each sub-instruction contained in the VLIW instruction. The apparatus dispatches a corresponding sub-instruction to an FU which corresponds to each sub-instruction, based on the results of decoding performed in the decoding unit, position information on the sub-instructions that are placed on the packet buffer, and position information on the sub-instructions that are placed in the current VLIW instruction. Sub-instructions can be effectively dispatched to corresponding FUs using simple decoding logic even in a case where the length of the VLIW instruction is not fixed.

Abstract: A microprocessor with an efficient and powerful coprocessor interface architecture is provided. The microprocessor has a set of generic coprocessor instructions on its instruction map and interface signals dedicated to the coprocessor interface. Depending on which coprocessor is interfaced to the microprocessor, the generic.coprocessor instructions are renamed to the specific coprocessor commands. When a coprocessor instruction for a specific function is fetched and decoded by the host processor, the appropriate command is issued through the coprocessor interface signals to the coprocessor and the coprocessor performs the required tasks. Hence, the coprocessor interfaced with the host processor need not have its own program. The pipelined operations of the coprocessor are synchronized with pipelined operations of the host processor.

Abstract: A semiconductor device having a main processor and a coprocessor for data processing is disclosed, the device comprising a main program memory for storing main processor instructions and a first portion of coprocessor instructions, a coprocessor program memory for storing a second portion of coprocessor instructions, and a predecoder for predecoding at least one bit of each instruction fetched from the main program memory and for generating an active coprocessor control signal upon predecoding a coprocessor type instruction, wherein the second portion of coprocessor instructions are fetched directly from the coprocessor program memory and the first portion and the second portion of coprocessor instructions are processed by the coprocessor upon receipt of the active coprocessor control signal.

Abstract: Disclosed is a novel n-bit binary counter with low power consumption, which comprises a set of half-adders for adding a “1” to an n-bit input signal, which includes a lower-order m bit component and a higher-order (n−m) bit component, and a set of D (data) flip-flops for storing outputs of the half-adders. The set of half-adders are divided into two sections, one of which is a first adder section for adding a “1” to the lower-order m bit component and the other of which is a second adder section for adding a carry signal from the first adder section to the higher-order (n−m) bit component. The set of D flip-flops are divided into two sections, one of which is a first register section to store outputs of the first adder section and the other of which is a second register section to store outputs of the second adder section. The n-bit input signal is comprised of the outputs of the first and second register sections.