Eyeball detection apparatus
First Claim
1. An eyeball detection apparatus comprising:
- a light-receiving device for receiving a reflection image from the cornea of an eyeball of a user or a person being tested;
a first determination circuit for determining whether the signal of the reflection image from the cornea received by said light-receiving device exceeds a specified level; and
a second determination circuit for determining whether the size of the reflection image from the cornea received by said light-receiving device falls in a specified range only when said first determination circuit determines that the signal of the reflection image from the cornea received by said light-receiving device exceeds said specified level;
wherein it is determined that the eyeball of the user or the person being tested has approached said apparatus only when said second determination circuit determines that the size of the reflection image from the cornea received by said light-receiving device falls in the specified range.
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Accused Products
Abstract
An eyeball detection apparatus has a light-receiving device, a first determination circuit, and a second determination circuit. The light-receiving device receives a reflection image from the cornea of an eyeball of a user or a person being tested. The first determination circuit determines whether the signal of the reflection image from the cornea received by the light-receiving device exceeds a specified level. The second determination circuit determines whether the size of the reflection image from the cornea received by the light-receiving device falls in a specified range only when the first determination circuit determines that the signal of the reflection image from the cornea received by the light-receiving device exceeds the specified level. It is determined that the eyeball of the user or the person being tested has approached the apparatus only when the second determination circuit determines that the size of the reflection image from the cornea received by the light-receiving device falls in the specified range.
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Citations
20 Claims
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1. An eyeball detection apparatus comprising:
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a light-receiving device for receiving a reflection image from the cornea of an eyeball of a user or a person being tested; a first determination circuit for determining whether the signal of the reflection image from the cornea received by said light-receiving device exceeds a specified level; and a second determination circuit for determining whether the size of the reflection image from the cornea received by said light-receiving device falls in a specified range only when said first determination circuit determines that the signal of the reflection image from the cornea received by said light-receiving device exceeds said specified level; wherein it is determined that the eyeball of the user or the person being tested has approached said apparatus only when said second determination circuit determines that the size of the reflection image from the cornea received by said light-receiving device falls in the specified range. - View Dependent Claims (2, 3, 4, 5)
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6. An eyeball detection apparatus comprising:
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an illumination device for illuminating an eyeball of a user or a person being tested; a light-receiving device for receiving a reflection image from the cornea of an eyeball projected by said illumination device; a detection circuit for detecting the approach of the eyeball of the user or the person being tested by detecting said reflection image from the cornea; a determination circuit for determining whether the signal of the reflection image from the cornea received by said light-receiving device exceeds a specified level; and an illumination control circuit for increasing the amount of illumination generated by said illumination device when said determination circuit determines that the signal of the reflection image from the cornea received by said light-receiving device exceeds said specified level. - View Dependent Claims (7)
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8. An eyeball detection apparatus comprising:
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a light-receiving device for receiving an image of an eyeball of a user or a person being tested; a control circuit for controlling said light-receiving device so that said light-receiving device outputs an appropriate signal level; a line-of-sight detection circuit for detecting the line of sight of the user or the person being tested according to the image of the eyeball received by said light-receiving device; and an eyeball detection circuit for detecting the approach of the eyeball of the user or the person being tested according to the image of the eyeball received by said light-receiving device; wherein said control circuit differently controls line-of-sight detection performed by said line-of-sight detection circuit and eyeball approach detection performed by said eyeball detection circuit. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An eyeball detection apparatus comprising:
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a light-receiving device having a light-receiving sensor for receiving an image of an eyeball of a user or a person being tested; a control circuit for controlling said light-receiving device so that said light-receiving device outputs an appropriate signal level, said control circuit operating a first control mode in which control is changed according to the level of light received by said light-receiving sensor and a second control mode in which control specified in advance is performed regardless of the level of light received by said light-receiving sensor; and an eyeball detection circuit for detecting the approach of the eyeball of the user or the person being tested according to the image of the eyeball received by said light-receiving device. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification