• Proceedings of the KIEE Conference
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• 2006.07d
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• pp.2045-2046
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• 2006

본 논문에서는 고속의 멀티미디어 Streaming data를 처리하기 위한 DSP 기반의 플랫폼을 설계하였다. 개발한 하드웨어는 오디오/비디오 데이터를 처리하는데 있어서 유연성과 확장성을 부여하기위하여 DSP를 사용하였으며 기존의 DSP플랫폼과 다르게 PC에 의존하지않는 독립적인 H/W를 만들기 위하여 ARM Processor를 사용하였다. 이는 저해상도, 저비트율의 오디오/비디오가 분리된 형태의 플랫폼이아닌 DSP기반의 독립적인 유연 플랫폼 구조를 통하여 고속, 고해상도를 가능하게 한다. LAN을 통하여 전송받은 Streaming data는 PCI Interface를 이용하여 DSP로 전달되며 디코딩되어 출력된다.

• 제어로봇시스템학회:학술대회논문집
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• 2005.06a
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• pp.1820-1825
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• 2005

DSP chip parameters of a digital hearing aid (HA) should be optimally selected or fitted for hearing impaired persons. The more precise parameter fitting guarantees the better compensation of the hearing loss (HL). Digital HAs adopt DSP chips for more precise fitting of various HL threshold curve patterns. A specific DSP chip such as Gennum GB3211 was designed and manufactured in order to match up to about 4.7 billion different possible HL cases with combination of 7 limited parameters. This paper deals with a digital HA fitting program which is developed for optimal fitting of GB3211 DSP chip parameters. The fitting program has completed features from audiogram input to DSP chip interface. The compensation effects of the microphone and the receiver are also included. The paper shows some application examples.

• The Transactions of the Korean Institute of Power Electronics
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• v.6 no.4
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• pp.362-368
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• 2001

The goal of this paper is development ofa DSP based three phase power quality analyzer. Power analysis algorithm is a correlation function and it is accomplished using stand alone type TMS320C31 DSP(digital signal processor)board. Results of power analysis are displayed by LCD and D/A converter on the proposed system. Finally, this paper also goes on to discuss the performance of an instrument prototype, compared with one of those foreign models, both in terms of accuracy and speed of measurement.

• 제어로봇시스템학회:학술대회논문집
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• 1991.10a
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• pp.844-849
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• 1991

A high speed control system for a telerobot using DSP is developed. The system is designed to resolve computational burden in advanced algorithms. The design is assumed to h ave no specific algorithm and robot configuration. The system is composed of a teaching box, a DSP board, a set of servo drivers and 16 bit microcomputer system. The teaching box is designed as a man-machine interface, which has two joysticks with three degrees of freedom for velocity generation in Cartesian space. The DSP board, i.e. DSP56000ADS based on a 10.25MIPS digital signal processor, DSP56001, computes the inverse Jacobian matrix which transforms Cartesian velocity into joint velocity. A resolved motion rate control algorithm for a 5 degrees of freedom manipulator was implemented. About 100 Hz sampling rate was achieved in this system.

• Proceedings of the IEEK Conference
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• 1999.06a
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• pp.257-260
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• 1999

We have designed a 32-bit RISC microprocessor with 16/32-bit fixed-point DSP functionality. This processor, called YRD-5, combines both general-purpose microprocessor and digital signal processor (DSP) functionality using the reduced instruction set computer (RISC) design principles. It has functional units for arithmetic operation, digital signal processing (DSP) and memory access. They operate in parallel in order to remove stall cycles after DSP and load/store instructions with one or more issue latency cycles. High performance was achieved with these parallel functional units while adopting a sophisticated 5-stage pipeline structure and an improved DSP unit.

• The Journal of the Acoustical Society of Korea
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• v.17 no.3
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• pp.17-26
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• 1998

이 논문은 사운드 합성을 위한 전용 DSP의 설계에 관한 내용이다. 설계된 음원 DSP는 사운드 카드나 전자 악기, 혹은 노래방 기기 등에서 미디 신호를 입력으로 받아서 사운드를 합성하는데 사용된다. 합성 알고리즘으로는 FM방식과 PCM방식을 지원하며, 구조 가 다르고 합성 방식이 서로 다른 8개의 알고리즘을 하드웨어적으로 구현하였다. 설계된 DSP는 44.1KHz의 16비트 출력으로 32개의 음을 동시에 낼 수 있다. DSP 내부 구조의 최 적화와 마이크로 동작의 병렬화를 통해 실제 필요한 주파수보다 낮은 주파수에서 동작시킴 으로써 전력 소모와 칩 구현에서 많은 이점을 가져올 수 있었다. 설계된 DSP는 COMPASS 툴에서 0.8㎛ 표준 셀로 합성되어 칩으로 제작되었으며, 동작 주파수는 33MHz이다. 제작된 칩을 검증하기 위해 PC에 삽입되는 음원 모듈 카드를 제작하여 미디 음악을 연주시켜 보았 다. 그 결과 원하는 동작 주파수에서 완벽하게 사운드를 합성해내는 것을 확인할 수 있었다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.8 no.4
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• pp.833-837
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• 2004

The iris image recognition system realization using DSP processor for the faster real-time processing is presented in this paper. The system is composed of CCD camera, DSP processing and network part to link the communication. The system based on high speed DSP processor leads the iris recognition processing time to be faster. The simulation results in 0.9sec below approximately.

• Proceedings of the KIEE Conference
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• summer
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• pp.1340-1342
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• 2004

근래에 DSP설계기술은 하루가 다르게 성장 해가고 있다. 기존에 많은 양의 소수점 연산이 필요한 기기에 자주 사용되어왔던 TMS320C3x DSP시리즈는 소수점연산에는 유리하지만 DSP를 사용하기 위해 외부메모리 및 A/D컨버터, PWM제너레이터, 엔코더 카운팅 회로 등 주변회로를 설계하는데 많은 시간과 비용이 소비되었다. TMS320LF2407은 기존에 사용하던 복잡한 주변회로가 모두 하나의 컨트롤러에 내장되어 있어 사용하기가 편리하며 고속의 연산능력이 있다. 본 논문에서는 자기부상시스템을 모델링하고 이산시간에서 처리 가능한 다이나믹필터와 상태궤환제어기를 설계한 뒤 DSP를 이용한 부상실험셋트를 구성하여 실험을 통해 DSP의 효용성을 검증하고자 한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2004.05b
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• pp.149-153
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• 2004

A Impulse denosing filter design of image for the faster processing time and system compatibility using DSP processor is presented on this paper The system hardware is composed of the stand-alone board with 32 bits DSP processor and vision board for image data acquisition with NTSC CCD camera, and the host computer controls them. The denoising method uses the adaptive median filter. The experiment result is that the system leads to denosing effect as 90% and PSNR 22㏈

• Journal of Korea Society of Digital Industry and Information Management
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• v.14 no.4
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• pp.93-99
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• 2018

This paper presents an implementation method using NDK (Network Developer's Kit) of GNU (GNU is Not Unix) Radio and Multicore DSP (Digital Signal Processor) to implement LTE (Long Term Evolution) SDR (Software Defined Radio) Platform. In order to satisfy 1.4MHz, 3MHz, 5MHz and 10MHz of the bandwidth supported by LTE, USRP (Universal Software Radio Peripheral) X series which is an RF (Radio Frequency) transceiver of Ettus Research was used. To control this, GNU Radio which is an open source software radio toolkit was used. We also used NDK from TI (Texas Instruments) DSP to transfer data between USRP and DSP. Experimental results show throughput results according to each bandwidth, thus confirming the feasibility of implementing LTE SDR Platform using GNU Radio and NDK of TI DSP.