Abstract:
램핑 데이터의 전송량을 줄여 램핑 메모리 사이즈를 줄일 수 있는 무선통신 장치 및 그 장치에서의 램핑 데이터 전송방법이 개시된다. 그러한 무선통신 장치는, 램핑 데이터를 전송할 경우에, 전송되어질 램핑 샘플에 대하여 미리 설정된 제1 비트수의 램핑 데이터를 그대로 전송함이 없이, 이전의 램핑 샘플과의 차이값을 추출하고 데이터화하여 이를 상기 제1 비트수보다 작은 제2 비트수를 갖는 샘플 차 램핑 데이터로서 전송하는 디지털 베이스밴드 처리부와; 상기 샘플 차 램핑 데이터를 수신하여 상기 제1 비트수의 램핑 업다운 신호를 출력 파워레벨을 제어하는 신호로서 생성하는 아나로그 베이스밴드 처리부를 구비한다. 본 발명의 실시예에 따르면, 직렬 인터페이스를 통해 전송되는 램핑 데이터의 전송량이 줄어들어 수신 측에서의 노이즈 영향이 최소화 또는 줄어들고, 램프 제너레이터에 의해 억세스되는 램프 메모리의 용량이 줄어들어 장치의 제조비용이 경감되는 효과가 있다. 무선통신 장치, 램핑 데이터, 디지털 베이스밴드 처리부, 램프 제너레이터
Abstract:
광픽업 장치용 가요성 인쇄회로보드의 체결 구조체가 개시된다. 개시된 체결 구조체는, 광픽업 장치가 장착된 베이스에 형성된 관통공; 및 관통공에 삽입되어 가요성 인쇄회로보드를 베이스에 체결시키는 체결 클립을 구비한다. 이러한 본 발명에 따르면, 체결 클립을 사용하여 가요성 인쇄회로보드를 베이스에 체결함으로써작업 공정을 줄일 수 있고, 비용을 절감할 수 있다.
Abstract:
PURPOSE: An optical pickup device is provided to install various kinds of front photo diodes at a definite position for definitely receiving a partial beam projected from an optical source. CONSTITUTION: The device comprises a base, an optical source, a front photo diode, an object lens, and a main optical detector. The base is movably installed in a direction of the radius of an optical disc. The optical source, installed at the base, projects laser beam. The front photo diode receives the laser beam, and detects a strength of the laser beam. The object lens collects the laser beam, and focuses the collected beam on the optical disc. The main optical detector receives the beam reflected from the optical disc, and detects data signals and error signals. The base includes an installation member, and a stopper(136). The installation member mounts different front photo diodes with various specifications. The stopper, installed near the installation module, guides one front photo diode to be installed at one position of the installation module while it guides the other front photo diode to be installed at the other position of the installation module.
Abstract:
PURPOSE: An apparatus and a method for encoding non-parallel multi-cycle data are provided to improve cost effectiveness by using a high-speed DES(Data Encryption Standard) encoding/decoding mechanism. CONSTITUTION: The first multiplexer(905) is used for selecting one from an initialization vector and an encoded text of a previous plain text. An XOR gate(910) performs an XOR operation for the initialization vector or the encoded text and the previous plain text. The first to the third encoding stages(935,920,925) are used for representing one of 16 encoding rounds of a DES algorithm, respectively. An encoding register(950) stores an intermediate value and the encoded text as a final result in a process for performing the DES algorithm. The second multiplexer(930) is used for selecting one from an encoding datum of the DES algorithm and an output of the third encoding stage(925). The third multiplexer(945) is used for selecting one from an output of the first encoding stage(935) and an output of the first encoding stage(935) inverted by an inverse initial permutation(940).
Abstract:
PURPOSE: An SoC(System-On-Chip) selectively performing the power control of different kinds and the power control of the same kind and an operating method thereof are provided to efficiently manage power consumed in the SoC by selectively performing the power control of the different kinds and the power control of the same kind. CONSTITUTION: Different kind power management units are independently operated to independently control the operation of power areas. A logic circuit(101) logically combines transition condition signals outputted from the different kind power management units to output a first feedback signal. The different kind power management units are synchronized with each other through a power control method of the same kind in response to the first feedback signal in order to be operated. When the different kind power management units include a state machine including a set of the same states and synchronized through the power control method of the same kind, the different kind power management units are synchronized through a lockstep method to be operated.