• Title, Summary, Keyword: crosstalk

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Implementation of Gray-to-Gray 3D Crosstalk Reduction using Look-Up Table and Sub-Field Mapping (룩업 테이블 및 서브필드 맵핑을 이용한 계조 레벨 간 3D 크로스토크 저감 기술 구현)

  • Hong, Jae-Geun;Chung, Hae
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.38C no.10
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    • pp.928-936
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    • 2013
  • 3D crosstalk is one of the disturbing things to recognize 3D images. This is caused by the phenomenon that input image for left eye is transferred at the right eye and right eye is transferred at the left eye because of the imperfect isolation by the device characteristics. In this paper, we review the 3D PDP (Plasma Display Panel) operation using active shutter glasses and crosstalk measurement method and investigate the major cause of 3D crosstalk and extend conventional 3D crosstalk using full white and full black image input to Gray-to-Gray (GtoG) 3D crosstalk. We suggest a specific method to reduce Gray-to-Gray 3D crosstalk by using Look up Table (LUT) and sub-field mapping in PDP. And then, we verify the method by measuring GtoG 3D crosstalk rate through specific test images and numerical results.

Analysis of crosstalk of complicated striplines in a FR-4 multilayer PCB (다층기판에서 복잡한 스트립라인 구조의 누화 해석)

  • 이명호;전용일;정병윤;박권철;오창환
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.33A no.10
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    • pp.61-70
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    • 1996
  • In this paper, we find the values of near-end crosstalk coefficient in striplines of a FR-4 multilayer PCB by an analytic method and a HSPICE simulation method, and define calcualtion errors in an analytic method and define the application range, and simualte near-end crosstalk coefficients of the FCT (fast CMOS TTL) in complicated striplines by HSPICE and analyze near-en crosstalk coefficients in relation to dielectric thickness and trace spaces of striplines. As a result, we analyze coupling structure of the near-end crosstalk in the coplicated sstriplines that are impedance matched and define a coupling formula of near-end crosstalk coefficients in general complicated striplines. Especially, it is approximated in the layout grade rule.

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A Study on Crosstalk in High Speed Digital Signal Transmission Line (고속 디지털 신호 전송선로에서의 Crosstalk 에 관한 연구)

  • 김세영;장상건;남상식;박항구;신연강
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.31A no.8
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    • pp.16-25
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    • 1994
  • The prediction of crosstalk in one of important problems in estimating the EMC of a system for high speed digital signal transmission. Crosstalk curves are shown in terms of characteristic impedance of lines spacing between lines and rise time of pulse by using general multiple coupled transmission line equation and harmonic-balance method. The coupled symmetrical two-line on dielectric material epoxy-glass FR 4(${\varepsilon}_r$), is fabricated to measure crosstalk occuring at the near end and far end of the passive line. The inter-line is inserted to reduce crosstalk between two microstrip lines. The simulation results and the measurement results are shown and found to be very close.

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Study of Crosstalk in Multi-conductor system and Equivalent Circuit Model (인접선 신호선의 누화(Crosstalk)에 대한 해석 및 회로 모델에 관한 연구)

  • Lee, Dong-Jae;Ha, Jung-Rae;Kim, Jong-Min;Nah, Wan-Soo
    • Proceedings of the KIEE Conference
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    • pp.2211_2212
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    • 2009
  • 본 논문에서는 GaAs-Transistor가 접합된 전송선로 사이에서 발생되는 Crosstalk의 영향에 관한 연구를 하였다. 이 모델의 해석을 위해 인접선에서의 Crosstalk의 이론적인 접근을 하고, 3D Full Wave 시뮬레이션과 Circuit 시뮬레이션을 통해 해석하는 Crosstalk의 해석방법에 대한 모델을 제시하고자 한다. 또한 Coupling 된 Solder Bump의 Equivalent Circuit Model을 제시함으로써 Solder Bump의 Coupling이 Crosstalk의 영향에 미치는 영향에 대해 규명하고자 한다.

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A Systematic, Low-cost Bus Encoding for Crosstalk Elimination (Crosstalk 제거를 위한 체계적, 저비용의 버스 인코딩 기법)

  • Ryu, Ye-Sin;Kim, Tae-Whan
    • Proceedings of the Korean Information Science Society Conference
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    • pp.264-268
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    • 2007
  • 연결선(interconnect) 사이의 간섭으로 발생하는 crosstalk 지연시간(delay)을 제거하기 위한 두 가지의 방법을 제안 한다. (1) 체계적인 코드를 생성해내는 방법으로 crosstalk 지연시간(delay) 유발 경우를 두 가지의 종류로 분류하여 각각에 대해 버스(bus) 비트 수의 증가에 따른 analytic 한 코드 생성 공식을 유도하였다; (2) 부-버스(sub-bus) 간에 발생하는 crosstalk 지연시간(delay)을 기존의 방법에 비해 보다 효율적으로 제거하는, 즉 추가적인 차단 라인 (또는 complement 비트 라인)를 감소시키는 방법을 제안 한다. 두 연구 결과는 연결선 상의 데이터 전송에 따른 신뢰성, 지연시간 및 전력 소모 증가를 유발하는 crosstalk를 차단하는 엔코딩 기법으로 유용하게 사용될 것으로 보인다.

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Design Technique for Minimizing the Crosstalk Effect in Multiaxis Thrust Measurement Stand (다축 시험대의 상호 간섭 최소화 설계기법)

  • Kim, Joung-Keun;Yoon, Il-Sun
    • Journal of the Korean Society of Propulsion Engineers
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    • v.11 no.3
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    • pp.13-19
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    • 2007
  • This paper described design method to minimize the crosstalk effect of multiaxis thrust measurement stand which can measure the thrust vector control performance of Solid Rocket Motor. This paper presents a theoretical solution for predicting the magnitude of crosstalk and calculates design sensitivity. The results indicate that the most important parameter of crosstalk is the displacement of flexure-loadcell-flexure assembly. And shape, dimension and mechanical properties of flexure and loadcell can also influence the magnitude of crosstalk.

The Mathematical Model on Crosstalk Effect of Airborne Noise Sources and Verification based on Comparison between Transfer Path Analysis Methods (소음원간 누화 효과에 대한 수학적 모델 및 전달 경로 분석법 비교를 통한 검증)

  • Byun, Jae-Hwan;Kim, Yoon-Jae;Kang, Yeon-June;Kang, Koo-Tae;Kwon, O-Jun;Hong, Jin-Chul
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.18 no.9
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    • pp.943-951
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    • 2008
  • In this paper, the mathematical model on crosstalk effect between acoustic noise sources is presented. Based on this model, a theoretical value to quantitate crosstalk effect of sources can be defined on the authority of reverberation property of surrounding which sources are located, relative magnitudes of sources and phase deference between acoustic wave transferred from all of sources. In order to verify crosstalk effect factor, experiments are made for two cases, weak and strong crosstalk effect condition, by using toro representative transfer path analysis(TPA) methods.

Crosstalk evaluation in multiview autostereoscopic three-dimensional displays with an optimized diaphragm applied

  • Peng, Yi-Fan;Li, Hai-Feng;Zheng, Zhen-Rong;Xia, Xin-Xing;Yao, Zhi;Liu, Xu
    • Journal of Information Display
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    • v.13 no.2
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    • pp.83-89
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    • 2012
  • The crosstalk evaluation of multiview autostereoscopic three-dimensional (3D) displays is discussed, with both the human and technical factors investigated via image quality assessment. In the imaging performance measurements and analysis for a multiview autostereoscopic display prototype equipment, it was inferred that crosstalk would have both a positive and a negative effect on the imaging performance of the equipment. The importance of the attached diaphragm in the crosstalk evaluation was proposed and then experimentally verified, using the developed prototype equipment. The luminance distribution and crosstalk situation were given, with two different diaphragm arrays applied. The analysis results showed that the imaging performance of this 3D display system can be improved with minimum changes to the system structure.

A New Low-Power Bus Encoding Scheme Using Bus-Invert Logic Conversion (Bus-Invert 로직변환을 이용한 새로운 저전력 버스 인코딩 기법)

  • Lee, Youn-Jin;Shidi, Qu;Kim, Young-Chul
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.36 no.12B
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    • pp.1548-1555
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    • 2011
  • In ultra-deep submicron technology, minimization of propagation delay and power consumption on buses is one of the most important design objectives in system-on-chip (SOC) design. Crosstalk between adjacent wires on the bus may create a significant portion of propagation delay. Elimination or minimization of such faults is crucial to the performance and reliability of SOC designs. Most of the previous works on bus encoding are targeted either to minimize the bus switching or minimize the crosstalk delay, but not both. This paper proposes a new bus encoding scheme which can adaptively select one of functions "invert" and "logic-convert" according the number of bus switching on an encoded 4-bit cluster. This scheme leads to minimization of both crosstalk and bus switching. In experiment result, our proposed encoding technique consumes about 25% less power over the previous, while completely eliminating the crosstalk delay.

Modeling of Crosstalk Behaviors in Thermal Inkjet Print Heads (열 잉크젯 프린트헤드의 채널간 간섭현상의 모델링)

  • Lee, You-Seop;Sohn Dong-Ki;Kim Min-Soo;Kuk Keon
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.31 no.2
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    • pp.141-150
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    • 2007
  • This paper presents a lumped model to predict crosstalk characteristics of thermally driven inkjet print heads. Using the lumped R-C model, heating characteristics of the head are predicted to be in agreement with IR temperature measurements. The inter-channel crosstalk is simulated using the lumped R-L network. The values of viscous flow resistance, R and flow inertance, L of connecting channels are adjusted to accord with the 3-D numerical simulation results of three adjacent jets. The crosstalk behaviors of a back shooter head as well as a top shooter head have been investigated. Predictions of the proposed lumped model on the meniscus oscillations are consistent with numerical simulation results. Comparison of the lumped model with experimental results identifies that abnormal two-drop ejection phenomena are related to the increased meniscus oscillations because of the more severe crosstalk effects at higher printing speeds. The degree of crosstalk has been quantified using cross-correlations between neighboring channels and a critical channel dimension for acceptable crosstalk has been proposed and validated with the numerical simulations. Our model can be used as a design tool for a better design of thermal inkjet print heads to minimize crosstalk effects.