Abstract:
PURPOSE: A vehicle navigation system and a controlling method thereof are provided to calculate an azimuth and correct a present position by using a rotary angle of a steering wheel instead of a detected value of a gyro sensor. CONSTITUTION: A vehicle navigation system includes a steering wheel position detection unit, a tilt detection unit, and a control unit. The steering wheel position detection unit(150) detects a rotary angle of a steering wheel. The tilt detection unit(160) detects a tilt angle of the vehicle. The control unit(170) calculates a GPS signal, an azimuth of a gyro sensor, and a present position while the vehicle navigation system receives the GPS signal. The control unit calculates the azimuth, corrects the present position, and guides a traveling path by using the rotary angle of the steering wheel detected by the steering wheel position detection unit while the vehicle navigation system does not receive the GPS signal and the detected tilt angle is more than a setup value.
Abstract:
PURPOSE: A user recognition type signal switching device of a handsfree system is provided to enhance a speech quality by comparatively judging an intensity of a sound in a car, sensing a position of a user where the strongest voice signal is generated and operating an audio speaker closest to the user. CONSTITUTION: When signals are inputted through signal input units(10), each being formed as a microphone installed at each seat in a car, a comparator(70) compares the amplitude of each input signal and selects a signal with the largest amplitude. A controller(30) connected to a mobile phone by a jack receives a signal from the mobile phone and transmits a signal outputted from the comparator(70) to the mobile phone. As a contact connected to an audio unit(50) is separated by signals from the comparator(70) and the controller(30), a switching unit(40) connects a circuit to an audio reproducing speaker(60). The switching unit(40) includes a plurality of relays(40a-40n) respectively connected to the speaker(60).
Abstract:
PURPOSE: A user recognition type signal switching device of a handsfree system is provided to enhance a speech quality by comparatively judging an intensity of a sound in a car, sensing a position of a user where the strongest voice signal is generated and operating an audio speaker closest to the user. CONSTITUTION: When signals are inputted through signal input units(10), each being formed as a microphone installed at each seat in a car, a comparator(70) compares the amplitude of each input signal and selects a signal with the largest amplitude. A controller(30) connected to a mobile phone by a jack receives a signal from the mobile phone and transmits a signal outputted from the comparator(70) to the mobile phone. As a contact connected to an audio unit(50) is separated by signals from the comparator(70) and the controller(30), a switching unit(40) connects a circuit to an audio reproducing speaker(60). The switching unit(40) includes a plurality of relays(40a-40n) respectively connected to the speaker(60).
Abstract:
본 발명은 시스템 테스트 장치로서, 본 발명은 시스템 테스트 장치로서, 프로세스 제어블록에 테스트 에이전트를 삽입하는 삽입 모듈, 테스트 대상과 관련된 이벤트가 발생하는 경우, 상기 테스트 에이전트를 이용하여 테스트 대상을 테스트 코드로 후킹하는 후킹 모듈, 상기 테스트 대상이 후킹된 경우, 상기 테스트 대상과 관련된 이벤트가 발생한 프로세스에 대한 테스트 정보를 수집하는 스캐닝 모듈, 및 상기 스캐닝 모듈에 의해 수집된 테스트 정보를 저장하는 로깅 모듈을 포함한다.
Abstract:
PURPOSE: A system test device is provided to test communication between processes, system performance, and memory errors during the operation of the system by testing an actually managed code. CONSTITUTION: An insertion module(101) inserts a test agent into process control block. When a communication event is generated between processes, a hooking module(103) hooks a test target with a test code by using the test agent. When the test code is hooked, a scanning module(105) collects test information about communication between the processes. A logging module(107) stores the test information collected by the scanning module. A process control block(201) includes a present resource use state about the processes, a process state, priority, and a function table. [Reference numerals] (101) Insertion module; (103) Hooking module; (105) Scanning module; (107) Logging module; (201) Process control block;
Abstract:
본발명의테스트장치는임베디드시스템을테스트하는임베디드시스템의테스트장치에있어서, 임베디드시스템에서전송된로그정보를저장하는로그부; 로그정보의입력순서에기초하여패턴을분석하는패턴분석부; 분석된패턴에기초하여테스트모델을생성하는테스트모델부를포함한다. 본발명은임베디드시스템에서출력된로그정보를이용하여테스트모델을자동생성함으로써테스트모델구축비용을크게절감할수 있다. 나아가테스트모델구축비용절감은테스트데이터생성비용절감으로이어질수 있다. 본발명은임베디드시스템에서출력된로그정보를이용하여테스트모델을생성하기때문에임베디드시스템을이용한장치의행위를표현할수 있다. 이러한테스트모델과기존의정형적/비정형적방식으로기록된임베디드시스템의동작명령을비교하면동작명령과일관성이있도록임베디드시스템이구현되었는지검증할수 있다.
Abstract:
An initial driving current stress reduction circuit for a boost input-type converter is provided to minimize a dark current and power consumption in normal operation of the boost input-type converter. An initial driving current stress reduction circuit for a boost input-type converter includes a first resistor(R1), a second resistor(R2), a third resistor(R3), a fourth resistor(R4), a shunt regulator(TL431), and an NPN transistor. The first resistor is connected to a ground(GND) and an R terminal of the shunt regulator in parallel. The second resistor is connected between a controller input source(VCC) for driving the boost input-type converter and the R terminal of the shunt regulator. The third resistor is connected between a link capacitor and a K terminal of the shunt regulator. The fourth resistor is connected between the link capacitor and a C terminal of the NPN transistor. An A terminal of the shunt regulator is connected to the ground. The R terminal thereof is connected to the second resistor. The K terminal thereof is connected to a B terminal of the NPN transistor. The C terminal of the NPN transistor is connected to the fourth resistor and an E terminal thereof is connected to a battery source.