최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0819448 (1992-01-10) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 210 인용 특허 : 0 |
A bar code detection circuit accepts as input the discretized analog output of a CCD array, and performs piecewise linear reconstruction to produces a continuous polylinear output signal. In the region of a bar/space transition, the output signal is a close approximation of the reflectance function
A bar code detection circuit accepts as input the discretized analog output of a CCD array, and performs piecewise linear reconstruction to produces a continuous polylinear output signal. In the region of a bar/space transition, the output signal is a close approximation of the reflectance function of a bar code symbol convolved with the system transfer function of the bar code reader. Linear interpolation is performed in order to determine the offset of a given threshold value from an edge of the CCD analog output.
A reconstruction circuit that accepts as input a sampled analog signal and produces a continuous piecewise output signal, comprising: input means for periodically accepting samples of said analog signal; first storage means, coupled to said input means, for holding a first sample, said first sample
A reconstruction circuit that accepts as input a sampled analog signal and produces a continuous piecewise output signal, comprising: input means for periodically accepting samples of said analog signal; first storage means, coupled to said input means, for holding a first sample, said first sample being taken from said analog signal; second storage means for holding a second sample; difference amplifier means, coupled to said first and said second storage means, having an output that is responsive to the difference of the amplitudes of said first sample and said second sample; integrator means for producing an output signal that changes at a rate that is responsive to said difference amplifier means; and feedback means coupled to said integrator means and said second storage means for bringing the amplitude of the signal that is stored in said second storage means substantially to the amplitude of said first sample in said first storage means when said first storage means is ready to accept a sample from said input means.
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