Abstract:
PURPOSE: A method for enhancing entropy coding performance is provided to reduce the size of a memory by efficiently storing a neighboring block data. CONSTITUTION: A CABAC(Context-Adaptive Binary Arithmetic Coder) comprises a binarizer, a context modeler, and a binary arithmetic coder. The context modeler selects the probability model by using syntax element data of a neighbor block. The context modeler offers the selected probability model to the binary arithmetic encoding device. The context modeler is replaced with the deformation syntax element.
Abstract:
CABAC(Context-based Adaptive Binary Arithmetic Coding) 부호화기의 문맥 모델러에서 문맥 모델을 유도하기 위해서는 이웃 블록의 데이터가 필요한데 이웃 블록 데이터를 가공하지 않은 상태로 전부 저장하게 된다면 메모리 용량이 비효율적으로 커지게 된다. 본 발명에서는 이웃 블록 데이터를 효율적으로 저장하여 메모리 크기를 감소시키는 방법을 사용한다. 또한 기존의 이진 산술 부호화 알고리즘은 연산의 복잡도와 각 단계 간의 데이터 의존도가 매우 높기 때문에 빠른 연산이 어렵다. 따라서 연산 과정의 복잡도와 데이터 의존도를 줄이기 위하여 재정규화 과정을 효율적으로 처리할 수 있는 파이프라인 구조를 사용한다.
Abstract:
Disclosed is an inverse transformation device of images. The disclosed inverse transformation device of images includes an inverse transformation member having a plurality of inverse transformation units for performing inverse transformation of images into a certain size of block unit. Each of the inverse transformation units successively performs inverse transformation calculation for N (two or higher) times. Each of the inverse transformation units includes a first and a second sub-inverse-transformation unit and a third adder-subtractor performing adding/subtraction calculation for the output values of the first and second sub-inverse-transformation units. The first sub-inverse-transformation unit includes 3:1 multiplexer, four first shifters and three first adder-substractors. The second sub-inverse-transformation unit includes 5:1 multiplexer, four second shifters and three second adder-substractors. The third adder-substractor is connected to an input terminal of the 3:1 multiplexer.
Abstract:
PURPOSE: A battery power controller, a mobile device unit thereof, and a controlling method thereof are provided to guarantee the extended usage time of a battery by using an operation amount calculator. CONSTITUTION: A mobile device including a battery power controller comprises the following: an operation performing unit(110) offering special services to users; a battery unit(120) supplying electric power for performing an operation process; an operation amount calculator(130) calculating the operation amount of the mobile device, and offering information based on the calculated operation amount; and a user input unit(140) for inputting the usage time or the service quality.
Abstract:
PURPOSE: A mobile robot, and a method for transferring the robot are provided to control the movement of the mobile robot by estimating the intention of a puller by sensing the rotating angle of joint without a sensor when the puller holds a robot arm to move. CONSTITUTION: A mobile robot comprises a movable part, a robot arm(120), a joint angle measurement part(200), a movement prediction part(300), and a controller(400). The movable part transfers the mobile robot. The robot arm is formed in the body of the mobile robot. The robot arm is composed of a plurality of joints. The joint angle measurement part measures the rotational angle of a plurality of joints. When the puller holds the robot arm to move based on the measured rotation angle of a plurality of joints, the movement prediction part predicts the moving route of the robot. The controller controls the movable part according to the prediction.
Abstract:
본 발명은 비디오의 시간적 중복성을 제거하기 위한 움직임 추정의 속도를 향상시키는 방법 및 장치에 관한 것이다. 입력 프레임을 부호화하는 비디오 인코딩 장치에 사용되는 움직임 추정 방법은, 상기 입력 프레임에 포함되는 현재 블록의 움직임 벡터에 대한 예측 값을 계산하는 단계와, 움직임 추정을 위한 탐색 영역을 복수의 구역들로 분할하는 단계와, 상기 계산된 예측 값을 이용하여, 상기 복수의 구역들에 대한 탐색 순서를 결정하는 단계와, 상기 복수의 구역들에 대하여, 상기 결정된 탐색 순서에 따라 조기 중단 기반의 움직임 벡터 탐색을 수행하는 단계로 이루어진다. 움직임 추정기, 다단계 탐색 기법, 조기 중단 기법
Abstract:
PURPOSE: An entropy decoder for H.264/AVC and a decoder equipping the same without using an embedded processor are provided to use an optimization method of a lockup table and a storage space by using a CAVLC used in the entropy decoder. CONSTITUTION: An entropy decoder(100) includes an input buffer(110), an NAL decoder(120), and an exponent decoder(130). The input buffer inputs bit string data. The bit string data is comprised of NAL(Network Abstraction Layer) header and RBSP(Raw Byte Sequence Payload). The NAL decoder determines the kind of the syntax element. The syntax element parses the RBSP of around 4 kind according to the identifier. The NAL decoder selects the decoding method.