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B모드 超音波 診斷機의 誤差補正 : 두께 測定을 中心으로 Centering on the Thickness
박종백,문규성 조선대학교 동력자원연구소 1987 動力資源硏究所誌 Vol.9 No.2
In medical appliance of B mode ultrasonic diagnosis apparatuses, on the supposition that regarding non-linear mediums of body as linear ones makes the difference in the measurement of distance, a model of non-linear medium was designed by accumulating in the axial direction the phantoms which were made of respectively different mediums in density, and the measurement by axial resolution of the apparatuses confirmed the difference in the measurement of distance. In order to know the rate of difference according to the ultrasonic propagation velocity in respectively different mediums in density, the curves of the difference correction according to the ultrasonic propagation velocity are presented by measuring the density of every medium and the ultrasonic propagation velocity.
自動車 補助走行裝置 : 車線認識을 中心으로 Centering on the line recognition
박종백,박광채 조선대학교 동력자원연구소 1985 動力資源硏究所誌 Vol.7 No.1
The line recognition method using photo sensors is proposed to prevent the accidents caused by going over the lines on the lane and it gives an alarm message sent by the microcomputer(Pc-8001) to a driver. It is considered that this photo sensing system can be used as an auxiliary device in auto controlled running by applying the acquired data to the automatic control system.
박종백,박광채 조선대학교 동력자원연구소 1986 動力資源硏究所誌 Vol.8 No.1
The existing auxiliary memory units have complex file structures since magnetic materials are sued as storage cells which usually have long access time because they must use complicated control units. Therefore, very poor utility factors are resulted wuth such units. In order to overcome the defects of the existing auxiliary memory units, it is ssary to develop the auxiliary memory units semploying 64KDRAM (Dynamic Random Access Memory) as semiconductor mass storage units. In this paper, a study is made on the availability and effectiveness of the auxiliary memory units using the 64 K DRAM. The results are as follows : 1) The file structures can be made very simple because this system can be applied to the structures of the random access file. 2) This system reduce access time by using DMA Controller while existing RAM disk units can access to the memory through I/O port. 3) This system can accomplish maximum memory utility factor by removing the gaps between files through the improvement of the file structures.
GaAs MES FET를 사용한 M/W대 저잡음 증폭기의 설계
박종백 조선대학교 생산기술연구소 1991 生産技術硏究 Vol.13 No.1
To improve receiving sensibility and reliability it was experimented using Low Noise Amplifier which is Frequency band 6GHz. Gain 30dB and Noise Figure 3dB. As a result it could be seen that the threshold level is going down to 7.8dB and it decreases the outage time 83.5% in the 83kms distance betwen M/W channel like a section from Moo-dueng station to Mang-un station.
TV放送局 SYSTEM의 MONITOR 開發에 관한 硏究 : 광주방송국을 중심으로 Centering on Kwang ju Broadcasting Station
박종백,박광채 조선대학교 동력자원연구소 1984 動力資源硏究所誌 Vol.6 No.2
System monitor using PC-8001 microcomputer was developed for the error detection and the emergency recovery in broadcasting instruments in TV broadcasting station. It was shown that this system could control the office management and the monitoring on air smoothly because of its conservation of the original functions of computer to maximize the effect of computer system as possible. By this system interfacing with wordprocessor it can be used as a TV title generator and therefore it will contribute greatly to massive and high speed message communication.
朴鍾伯,晋達福 朝鮮大學校 1976 綜合論文集 Vol.1976 No.-
To study on the speaker identifying device, the electrical models of auditory system were dealt in this paper. The models are composed of the following; a 140-section band pass filter representing the basilar membrane; half wave rectifiers representing the hair cells; and a neuromime representing the auditory neurons. Experiments on these electrical models were performed. Holmand frequency ratio was proposed as a characteristic parameter in the experiments. As a result of experiment, the speaker could be identified through the voice sample of single vowel.