Optical detection system and program

• US 9,041,688 B2
• Filed: 10/19/2011
• Issued: 05/26/2015
• Est. Priority Date: 11/11/2010
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Kiyose, Kanechika
• Primary Examiner(s): Pham, Viet
• Assistant Examiner(s): MARTINEZ QUILES, IVELISSE
• Application Number:
  US13/276,541
• Publication Number:
  US 20120120028A1
• Time in Patent Office: 1,315 Days
• US Class Current: 345/175
• CPC Class Codes: G06F 2203/04101 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
• CPC Class Codes: G06F 3/0304 Detection arrangements using opto-electronic means constructional details of pointing devices not related to the detection arrangement using opto-electronic means G06F3/033; optical digitisers G06F3/042
• CPC Class Codes: G06F 3/0428 by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual sensing beam interruptions in a planar beam grid of an optical touch-screen G06F3/0421

Abstract

An optical detection system includes a detection part that detects object information as information of an object based on a light reception result of reflected light by reflection of irradiation light on the object, and a processing part that performs processing based on the object information, and the processing part acquires reflectance information of the object as the object information and performs processing of a command designated by the object based on the acquired reflectance information.

Claims

1. An optical detection system comprising:

a detection part that detects object information as information of an object based on a light reception result of reflected light by reflection of irradiation light on the object; and

a processing part that performs processing based on the object information,

wherein the processing part acquires first and second reflectance information of the object as the object information,

when the processing part receives the first reflectance information that corresponds to a first reflectance ratio of the object, the processing part performs a first command corresponding to the first reflectance information,

when the processing part receives the second reflectance information that corresponds to a second reflectance ratio of the object, the processing part performs a second command corresponding to the second reflectance information,

the first reflectance ratio is changed to the second reflectance ratio by one of changing an area of a reflection surface of the object and changing a reflection ratio of the reflection surface of the object,

the first command is different from the second command,

the processing part performs command processing of at least one of command determination and command execution using X-coordinate information and Y-coordinate information of the object if a Z-coordinate range of the object from a target surface is detected to be a first Z-coordinate range near the target surface, and

the processing part performs hovering processing as processing for hovering operation using the X-coordinate information and the Y-coordinate information of the object if the Z-coordinate range of the object from the target surface is detected to be a second Z-coordinate range farther than the first Z-coordinate range, and

the processing part performs calibration processing on the first and second reflectance information when the object is in the first Z-coordinate range.

2. The optical detection system according to claim 1, wherein

the first command corresponds to an input designation command, and

the second command corresponds to an end designation command.

3. The optical detection system according to claim 2, wherein the input designation command designates an input start of shape input by the object, and

the end designation command designates an input end of shape input by the object.

4. The optical detection system according to claim 1, wherein the processing part performs determination of a designation command to designate an execution target command and an execution command to execute the execution target command designated by the designation command based on the first and second reflectance information.

5. The optical detection system according to claim 4, wherein when the object has the first reflectance ratio, the processing part determines that the execution target command has been designated by the designation command, and then, when the object has the second reflectance ratio, the processing part executes the execution target command designated by the designation command by the execution command.

6. The optical detection system according to claim 1, wherein the object is a user'"'"'s finger, and

the first and second reflectance ratios correspond to differences of the number of fingers existing in a detection region.

7. The optical detection system according to claim 1, wherein the object is a pen-shaped object,

the pen-shaped object has a first reflection surface with the first reflectance ratio and a second reflection surface with the second reflectance ratio higher than the first reflectance ratio, and

the processing part acquires the first reflectance information acquired from a light reception result of reflected light from the first reflection surface and the second reflectance information acquired from a light reception result of reflected light from the second reflection surface, and performs processing of the first and second commands based on the first reflection information and the second reflection information.

8. The optical detection system according to claim 1, wherein the object is a pen-shaped object,

the pen-shaped object is an object having a projection part including a member having the second reflectance ratio different from the first reflectance ratio of a main body part in a state of the projection part switched between a retracted state and a non-retracted state by a predetermined operation, and

the processing part acquires the first reflectance information acquired from a light reception result of reflected light by the pen-shaped object when the projection part is in the retracted state and the second reflectance information acquired from a light reception result of reflected light by the pen-shaped object when the projection part is in the non-retracted state, and performs the first and second commands based on the first reflectance information and the second reflectance information.

9. The optical detection system according to claim 1, wherein the processing part performs determination processing of the first and second commands based on the first and second reflectance information, respectively, when the object is in the first Z-coordinate range.

10. The optical detection system according to claim 1, further comprising:

an irradiation part that outputs irradiation light to a detection region; and

a light receiving part that receives the reflected light.

11. A computer program product embodying computer readable instructions stored on a non-transitory computer readable medium for causing execution in a computer, the computer program product comprising:

instructions for a detection part to detect object information as information of an object based on a light reception result of reflected light by reflection of irradiation light on the object; and

instructions for a processing part to perform processing based on the object information,

wherein the processing part acquires first and second reflectance information of the object as the object information,

when the processing part receives the first reflectance information that corresponds to a first reflectance ratio of the object, the processing part performs a first command corresponding to the first reflectance information,

when the processing part receives the second reflectance information that corresponds to a second reflectance ratio of the object, the processing part performs a second command corresponding to the second reflectance information,

the first reflectance ratio is changed to the second reflectance ratio by one of changing an area of a reflection surface of the object and changing a reflection ratio of the reflection surface of the object,

the first command is different from the second command,

the processing part performs command processing of at least one of command determination and command execution using X-coordinate information and Y-coordinate information of the object if a Z-coordinate range of the object from a target surface is detected to be a first Z-coordinate range near the target surface, and

the processing part performs hovering processing as processing for hovering operation using the X-coordinate information and the Y-coordinate information of the object if the Z-coordinate range of the object from the target surface is detected to be a second Z-coordinate range farther than the first Z-coordinate range, and

the processing part performs calibration processing on the first and second reflectance information when the object is in the first Z-coordinate range.

12. An optical detection system comprising:

a detection part that detects information of an object by receiving a light reflected by the object; and

a processing part that performs first and second commands based on the information of the object, wherein

the information of the object including first object information and second object information, the first object information is detected by the detection part when a first amount of the light is detected, and the second object information is detected by the detection part when a second amount of the light is detected, and

the processing part performs the first command when the processing part acquires the first object information, and the processing part performs the second command when the processing part acquires the second object information,

the processing part performs command processing of at least one of command determination and command execution using X-coordinate information and Y-coordinate information of the object if a Z-coordinate range of the object from a target surface is detected to be a first Z-coordinate range near the target surface, and

the processing part performs hovering processing as processing for hovering operation using the X-coordinate information and the Y-coordinate information of the object if the Z-coordinate range of the object from the target surface is detected to be a second Z-coordinate range farther than the first Z-coordinate range, and

the processing part performs calibration processing on the first and second reflectance information when the object is in the first Z-coordinate range.