Apparatus and method for inputting reflected light image of a target object
First Claim
1. An information input method comprising:
- irradiating an object with light;
picking up, using an image sensor, at an emission time, picking up at a non-emission time, and picking up a visible light image;
generating a timing signal comprised of a pulse signal or a modulation signal for controlling an intensity of light of a light emitter;
generating a control signal for individually controlling light-receiving timings of light-receiving cells of with image sensor on the basis of the timing signal from a timing signal generator;
detecting a difference in accumulated electrical charges between a cell of first cells and a corresponding cell of second cells;
passing using a filter only light emitted by said light emitter;
intercepting light emitted by said light emitter; and
selecting one of pass filter and cut filter upon passing light to be sensed.
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Accused Products
Abstract
An area image sensor outputs the difference between charges received by light-receiving cells arranged in an array pattern. A system controller generates a timing signal for generating a pulse or modulation signal. A control signal generator generates a control signal for separately controlling the light-receiving timings of the light-receiving cells of the area image sensor on the basis of the timing signal from the system controller. A light emitting controller controls a light source to generate light, the intensity of which changes on the basis of the timing signal from the system controller. A reflected light image processor extracts a reflected image of an object from the difference outputted from the area image sensor.
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Citations
5 Claims
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1. An information input method comprising:
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irradiating an object with light; picking up, using an image sensor, at an emission time, picking up at a non-emission time, and picking up a visible light image; generating a timing signal comprised of a pulse signal or a modulation signal for controlling an intensity of light of a light emitter; generating a control signal for individually controlling light-receiving timings of light-receiving cells of with image sensor on the basis of the timing signal from a timing signal generator; detecting a difference in accumulated electrical charges between a cell of first cells and a corresponding cell of second cells; passing using a filter only light emitted by said light emitter; intercepting light emitted by said light emitter; and selecting one of pass filter and cut filter upon passing light to be sensed.
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2. An information input method, comprising:
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irradiating an object with light; picking up, using an image sensor, at an emission time, picking up at a non-emission time, and picking up a visible light image; generating a timing signal comprised of a pulse signal or a modulation signal for controlling an intensity of light of a light emitter; generating a control signal for individually controlling light-receiving timings of light-receiving cells of with image sensor on the basis of the timing signal from a timing signal generator; detecting a difference in accumulated electrical charges between a cell of first cells and a corresponding cell of second cells; passing using a filter only light emitted by said light emitter; intercepting light emitted by said light emitter; and selecting one of pass filter and cut filter in synchronism with the timing signal from said timing signal generator.
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3. An information input method, comprising:
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irradiating an object with light; picking up, using an image sensor, at an emission time, and picking up at a non-emission time; generating a timing signal comprised of a pulse signal or a modulation signal for controlling an intensity of light of a light emitter; generating a control signal for individually controlling light-receiving timings of light-receiving cells of with image sensor on the basis of the timing signal from a timing signal generator; detecting a difference in accumulated electrical charges between a cell of first cells and a corresponding cell of second cells; picking up a visible light image; splitting light into the object reflected light and the light other than the object reflected light; selecting whether the light is to be passed or intercepted on optical paths of the split light beams; and synthesizing the two light beams split by a light splitting section.
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4. An information input method, comprising:
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irradiating an object with light; picking up, using an image sensor, at an emission time and picking up at a non-emission time; generating a timing signal comprised of a pulse signal or a modulation signal for controlling an intensity of light of a light emitter; generating a control signal for individually controlling light-receiving timings of light-receiving cells of with image sensor on the basis of the timing signal from a timing signal generator; detecting a difference in accumulated electrical charges between a cell of first cells and a corresponding cell of second cells; picking up a visible light image; splitting light into the object reflected light and the light other than the object reflected light; selecting one of a state wherein only a light source wavelength is passed and a state wherein only visible light is passed; selecting whether the light is to be passed or intercepted on optical paths of split light beams; and synthesizing the two light beams split by a light splitting section.
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5. An information input method, comprising:
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irradiating an object with light; picking up, using an image sensor, at an emission time and picking up at a non-emission time; generating a timing signal comprised of a pulse signal or a modulation signal for controlling an intensity of light of a light emitter; generating a control signal for individually controlling light-receiving timings of light-receiving cells of with image sensor on the basis of the timing signal from a timing signal generator; detecting a difference in accumulated electrical charges between a cell of first cells and a corresponding cell of second cells; picking up a visible light image; splitting light into the object reflected light and the light other than the object reflected light; selecting one of a state wherein only a light source wavelength is passed and a state wherein all light components are passed; selecting one of a state wherein only visible light is passed and a state wherein all light components are passed; selecting whether the light is to be passed or intercepted on optical paths of the split light beams; and synthesizing the two light beams split by a light splitting section.
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Specification