Abstract:
An on-chip network interfacing apparatus and method are provided. The apparatus includes a plurality of on-chip network ports; a switch receiving data from a first on-chip network port of the on-chip network ports and transmitting the received data to a second on-chip network port of the on-chip network ports; and an interface unit interfacing an advanced microcontroller bus architecture (AMBA) signal received from an module, which is designed according to an AMBA on-chip bus protocol, and outputting the interfacing result to the first on-chip network port; and interfacing the on-chip network signal received from the first on-chip network port, and outputting the interfacing result to the module. Accordingly, it is possible to establish communications at increased speeds by interfacing a signal according to the AMBA 2.0 on-chip bus protocol with a signal according to the on-chip network protocol.
Abstract:
Provided is a communication system for improving utilization of on-chip communication architecture and eliminating waiting of a master to use a bus. The communication system includes: a direct memory access controller handling high-capacity data communication among a memory and peripheral devices; a communication switch connected with the direct memory access controller, transferring a header storing information on a location of a passive circuit and a continuous transfer size, and an initial address from an active circuit to the passive circuit, and sending and receiving data to/from the direct memory access controller; and a memory controller sending and receiving the data and the address to/from the direct memory access controller. According to the communication system, a request of an active circuit is not delayed between on-chip circuits, several active circuits can simultaneously transfer data, data communication rate between passive circuits increases, and communication congestion between the passive circuits can be controlled.
Abstract:
Disclosed herein is a delay circuit for a low power ring oscillator. The delay circuit includes: a pair of N type transistors that receive first differential input signals Vin1+ and Vin1−; a pair of P type transistors that receive second differential input signals Vin2+ and Vin2−; a differential output terminal that outputs differential output signals Vout+ and Vout− generated from the pair of N type transistors and the pair of P type transistors; an N type detector that supplies a body voltage to the pair of N type transistors; and a P type detector that supplies a body voltage to the pair of P type transistors.
Abstract:
Provided is an apparatus and method for performing intra prediction for an image decoder, in which by use of horizontal/vertical blocks adjacent to image data input from an external device, the intra prediction is performed in parallel with respect to 16×16 luminance component and 4×4 luminance component of the image data and then with respect to chrominance component, thereby maximizing efficiency of system to not only reduce execution time and hardware cost but also increase processing speed.
Abstract:
Disclosed is a wireless communication apparatus having a self sensing function, which can detect an object by use of a wake-up function without employing a separate sensor. The wireless communication apparatus includes a communication unit wirelessly communicating with a server forming a wireless network, and a wake-up unit waking up the communication unit under the control of the server when the communication unit is in sleep mode, and sensing the presence of an object within a preset communication range according to a reflection signal, which is a signal reflected by the object after being transmitted from the communication unit.
Abstract:
Provided is a crossbar switch architecture appropriate to a multi-processor system-on-a-chip (SoC) platform including a plurality of masters and slaves, capable of high-speed data transfer, allowing the number of masters or slaves therein to be easily increased, and having a simple control structure. The crossbar switch architecture includes 2×1 multiplexers connected in a matrix form consisting of rows and columns. The 2×1 multiplexers each have one input line connected with an output line of a multiplexer at a front column of the same row, and the other input line connected with an input/output line of a column including the corresponding multiplexer, and an output line of a multiplexer at the last column of each row is connected with an input/output line of the row.
Abstract:
A wireless communications terminal includes: an RF wake-up detection unit detecting a first RF signal including an RF ID for waking up; and a wireless communications unit waking up when the RF ID included in the first RF signal detected by the RF wake-up detection unit matches a pre-set reference ID in a sleep mode.
Abstract:
There are provided a distributed video coding apparatus and method capable of controlling an encoding rate, the apparatus including: an intra-frame encoder encoding a key frame and outputting a bit stream of the encoded key frame; an encoder rate control (ERC) module calculating a bit rate according to motion complexity of a present Wyner-Ziv (WZ) frame by using a correlation between the motion complexity and the bit rate; and a turbo encoder encoding the present WZ frame by the bit rate calculated at the ERC module and outputting the encoded WZ bit stream.
Abstract:
Provided is a crossbar switch architecture appropriate to a multi-processor system-on-a-chip (SoC) platform including a plurality of masters and slaves, capable of high-speed data transfer, allowing the number of masters or slaves therein to be easily increased, and having a simple control structure. The crossbar switch architecture includes 2×1 multiplexers connected in a matrix form consisting of rows and columns. The 2×1 multiplexers each have one input line connected with an output line of a multiplexer at a front column of the same row, and the other input line connected with an input/output line of a column including the corresponding multiplexer, and an output line of a multiplexer at the last column of each row is connected with an input/output line of the row.
Abstract:
The present invention relates to a turbo decoder having a state metric, a calculating method using the turbo decoder and a computer-readable recoding medium for executing a calculation method implemented to the turbo decoder. The turbo decoder includes branch metric calculation unit, state metric calculation unit and log likelihood ratio calculation unit. The present invention may reduce calculation steps by simplifying a conventional turbo decode algorithm, reducing a size of a hardware, which the turbo decoder can be implemented in as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). The present invention can be implemented in an error correction in wireless communication system and satellite communication system.