OPTICAL DETECTION SYSTEM AND PROGRAM

• US 20120120028A1
• Filed: 10/19/2011
• Published: 05/17/2012
• 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
• Granted Patent: US 9,041,688 B2
• Time in Patent Office: 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 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.

2. The optical detection system according to claim 1, wherein the processing part performs determination processing of a kind of the command based on a change in reflectance represented by the reflectance information.

3. The optical detection system according to claim 2, wherein the processing part performs determination of an input designation command and an end designation command based on the change in reflectance represented by the reflectance information.

4. The optical detection system according to claim 3, wherein the input designation command is a command to designate an input start of shape input by the object,

the end designation command is a command to designate an input end of shape input by the object, and

if the reflectance represented by the reflectance information of the object is a first reflectance, the processing part determines that the input start of the shape input has been designated by the input designation command, and, if the reflectance represented by the reflectance information is a second reflectance different from the first reflectance, the processing part determines that the input end of the shape input has been designated by the end designation command.

5. The optical detection system according to claim 2, 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 change in reflectance represented by the reflectance information.

6. The optical detection system according to claim 5, wherein if the reflectance represented by the reflectance information of the object is a first reflectance, the processing part determines that the execution target command has been designated by the designation command, and then, if the reflectance represented by the reflectance information is a second reflectance different from the first reflectance, the processing part executes the execution target command designated by the designation command by the execution command.

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

the processing part performs processing of the command based on the change of the reflectance information due to a difference in the number of fingers existing in a detection region.

8. 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 a first reflectance and a second reflection surface with a second reflectance higher than the first reflectance, and

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

9. 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 a reflectance different from that 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 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 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 processing of the command based on the first reflectance information and the second reflectance information.

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

11. The optical detection system according to claim 10, wherein the processing part performs determination processing of a kind of the command based on the reflectance information when the object is in the first Z-coordinate range.

12. The optical detection system according to claim 10, wherein the processing part performs calibration processing on the reflectance information when the object is in the first Z-coordinate range.

13. 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.

14. A program allowing a computer to function as:

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 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.