# US 10,481,475 B2 · Smart lighting device and control method thereof

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- Number: US 10,481,475 B2
- Document ID: US10481475B2
- Status: Granted
- Kind: B2
- Application number: 15/594,674
- Filed: 2017-05-15
- Published: 2017-11-30
- Granted: 2019-11-19
- Earliest claimed: 2016-05-24
- Assignees: Compal Electronics, Inc.
- Applicants: Compal Electronics, Inc.
- Inventors: Ting-Wei Wu; Wei-Jun Wang; Chia-Min Liao; Tse-Hsun Pang; Wen-Yi Chiu; Po-Hsien Yang; Shi-Kuan Chen; Jui-Tsen Huang; Ming-Che Weng; Kun-Hsuan Chang; Yu-Hao Tseng; Hsin-Chieh Cheng
- Web page: https://patentgrep.com/patent/US10481475B2

## CPC

- G06F 3/017: {Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883)}
- G03B 21/142: {Adjusting of projection optics}
- G03B 21/2046: {Positional adjustment of light sources}
- G03B 21/2053: {Intensity control of illuminating light (controlled by video signal processing H04N5/74 or H04N9/31)}
- G06F 3/0425: {using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected (tracking a projected light spot to determine a position on a display surface G06F3/0386)}
- G06F 3/04817: using icons (graphical or visual programming using iconic symbols G06F8/34)
- G06F 3/0484: for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F 3/04842: Selection of displayed objects or displayed text elements (G06F3/0482 takes precedence)
- G06F 3/0486: Drag-and-drop
- G06F 3/04883: for inputting data by handwriting, e.g. gesture or text
- G06F 3/167: {Audio in a user interface, e.g. using voice commands for navigating, audio feedback}
- G06F 18/22: Matching criteria, e.g. proximity measures
- G06T 11/60: Creating or editing images; Combining images with text
- G06V 10/761: {Proximity, similarity or dissimilarity measures}
- G06V 40/28: {Recognition of hand or arm movements, e.g. recognition of deaf sign language (static hand signs G06V40/113)}
- H04N 5/2628: {Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation}
- H04N 9/315: {Modulator illumination systems (general applications of lighting devices F21V; general optical systems G02B; lamp houses for projectors not peculiar to the presence of an electronic spatial light modulator G03B21/20)}
- H04N 9/3155: {for controlling the light source (light source control per se H05B35/00 – H05B47/00; control of an illumination source for displays in general G09G3/3406)}
- H04N 9/3179: {Video signal processing therefor}
- H04N 9/3194: {including sensor feedback}
- H04N 23/11: for generating image signals from visible and infrared light wavelengths
- H04N 23/12: with one sensor only
- H04N 23/20: for generating image signals from infrared radiation only
- H04N 23/45: for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images
- H04N 23/56: provided with illuminating means
- H04N 23/62: Control of parameters via user interfaces
- H04N 23/69: Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
- H04N 23/71: Circuitry for evaluating the brightness variation
- H04N 23/72: Combination of two or more compensation controls
- H04N 23/74: by influencing the scene brightness using illuminating means
- H04N 23/90: Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
- G06F 3/0421: {by interrupting or reflecting a light beam, e.g. optical touch-screen}
- G06F 3/043: using propagating acoustic waves
- G06F 3/045: using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
- G06F 16/58: Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
- G06K 7/1417: {2D bar codes}
- Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

A smart lighting device includes a light source module, an image projection module and an ambient light sensing module. The image projection module is pivoted to the light source module, and the ambient light sensing module is electrically connected to the light source module and the image projection module. The ambient light sensing module is configured to sense a brightness value of ambient light. Brightness values of the light source module and the image projection module are adjusted according to the brightness value of the ambient light sensed by the ambient light sensing module. A control method for a smart lighting device is also provided.

## Claims

### Claim 1

A smart lighting device standing on a bearing surface and having a plurality of projection modes, comprising:
an illumination module;
a camera assembly; and
an image projection module adjacent to the illumination module and pivotally connected to the illumination module,
wherein the image projection module has the projection modes, the projection modes are formed by different rotation angles of the image projection module relative to the illumination module, and a brightness value of the illumination module is adjusted in accordance with the projection modes of the image projection module.

### Claim 2 (depends on 1)

The smart lighting device according to claim 1, wherein the smart lighting device further comprises a light sensing assembly for sensing a brightness of ambient light around the smart lighting device.

### Claim 3 (depends on 2)

The smart lighting device according to claim 2, wherein the ambient light comprises daylight, artificial light, light reflection of objects, and light reflection of wall surfaces and bearing surfaces.

### Claim 4 (depends on 2)

The smart lighting device according to claim 2, wherein the light sensing assembly comprises a sensing element for the ambient light or a photosensitive element of at least one image capturing element of the camera assembly.

### Claim 5 (depends on 4)

The smart lighting device according to claim 4, wherein the brightness value of the ambient light is sensed by the sensing element for the ambient light.

### Claim 6 (depends on 4)

The smart lighting device according to claim 4, wherein the brightness value of the ambient light is sensed by the photosensitive element of the image capturing element of the camera assembly.

### Claim 7 (depends on 4)

The smart lighting device according to claim 4, wherein the brightness value of the ambient light is sensed by the sensing element for the ambient light and the photosensitive element of at least one image capturing element of the camera assembly.

### Claim 8 (depends on 2)

The smart lighting device according to claim 2, further comprising a processing module electrically connected to the illumination module, the image projection module and the light sensing assembly, and the light sensing assembly is electrically connected with the illumination module and the image projection module through the processing module, and the processing module adjusts the brightness values of the illumination module and the image projection module in accordance with the brightness value of the ambient light sensed by the light sensing assembly.

### Claim 9 (depends on 8)

The smart lighting device according to claim 8, wherein the processing module first determines whether the brightness value of the ambient light reaches a default value, and the processing module maintains the illumination module and adjusts the brightness value of the image projection module in accordance with the ambient light and a default database when the brightness value of the ambient light reaches the default value, or the processing module adjusts the brightness values of the illumination module and the image projection module in accordance with the ambient light and the default database when the ambient light does not reach the default value.

### Claim 10 (depends on 8)

The smart lighting device according to claim 8, wherein the processing module adjusts the brightness values of the illumination module and the image projection module in accordance with the ambient light and a default database.

### Claim 11 (depends on 8)

The smart lighting device according to claim 8, wherein the illumination module illuminates the bearing surface for holding the smart lighting device, and the camera assembly is electrically connected to the processing module, and the smart lighting device comprises a plurality of operation modes, and one of the operation modes is a shooting mode, and the processing module adjusts the brightness values of the illumination module and the image projection module in accordance with the ambient light sensed by the light sensing assembly when the smart lighting device is switched to the shooting mode.

### Claim 12 (depends on 11)

The smart lighting device according to claim 11, wherein the processing module first determines whether the ambient light reaches a default value, and the processing module maintains the brightness of the illumination module when the ambient light reaches the default value, or the processing module adjusts the brightness value of the illumination module in accordance with the ambient light and a default database when the ambient light does not reach the default value.

### Claim 13 (depends on 11)

The smart lighting device according to claim 11, wherein the processing module adjusts the brightness value of the illumination module is in accordance with the ambient light and a default database.

### Claim 14 (depends on 8)

The smart lighting device according to claim 8, further comprising a sensing module, wherein the sensing module is electrically connected with the processing module and comprises an absolute coordinate mode and a relative coordinate mode, and the image projection module comprises a plurality of projection modes, and the projection modes comprises a bearing surface projection mode and at least one wall surface projection mode, and the processing module controls the sensing module to be switched to the absolute coordinate mode when the image projection module is switched to the bearing surface mode, or the process module controls the sensing module to be switched to the relative coordinate mode when the image projection module is switched to each of the wall surface modes.

### Claim 15 (depends on 14)

The smart lighting device according to claim 14, wherein the sensing module comprises:
a light emitting element electrically connected to the processing module and configured to form a sensing area on the bearing surface for holding the smart light device; and
a light receiving element electrically connected to the processing module and disposed on the illumination module, and a sensing field of the light receiving element covers the sensing area.

### Claim 16 (depends on 15)

The smart lighting device according to claim 15, wherein the light emitting device is an infrared emitting element, and the light receiving element is an infrared receiving element.

### Claim 17 (depends on 15)

The smart lighting device according to claim 15, further comprising a support body configured to stand on the bearing surface, wherein the illumination module is connected with the support body to face the bearing surface, wherein the light sensing assembly is disposed on a side of the illumination module away from the bearing surface, and the light emitting element is disposed on a base of the support body configured to connect the bearing surface or the illumination module.

### Claim 18 (depends on 1)

The smart lighting device according to claim 1, further comprising a processing module electrically connected to the image projection module, the illumination module, and the camera assembly, wherein the image projection module has a plurality of projection modes, and one of the projection modes is a bearing surface projection mode, and the illumination module is configured to form an illumination area over the bearing surface for holding the smart light device, and the illumination area and an illumination area over the bearing surface projected by the image projection module are partially overlapped when the image projection module is switched to the bearing surface projection mode, and the processing module adjusts the brightness values of the illumination module and the image projection module in accordance with the brightness value of the sensed ambient light.

### Claim 19

A control method of a smart lighting device comprising a plurality of operation modes, capable of applying in a smart lighting device comprising an illumination module, an image projection module, and a light sensing assembly, wherein the image projection module is pivoted to the illumination module, and the control method of the smart lighting device comprising:
sensing a brightness value of ambient light by the light sensing assembly; and
adjusting brightness values of the illumination module and the image projection module in accordance with the brightness value of the sensed ambient light,
wherein the illumination module illuminates a bearing surface for holding the smart lighting device, and the image projection module comprises a plurality of projection modes, and one of the projection modes is a bearing surface projection mode, and an illumination area on the bearing surface projected by the illumination module and an illumination area on the bearing surface projected by the image projection module are partially overlapped when the image projection module is switched to the bearing surface projection mode, and the brightness values of the illumination module and the image projection module are adjusted in accordance with the brightness value of the sensed ambient light.

### Claim 20 (depends on 19)

The control method of the smart lighting device according to claim 19, wherein the ambient brightness comprises daylight, artificial light, light reflection of objects, and light reflection of wall surfaces and bearing surfaces.

### Claim 21 (depends on 19)

The control method of the smart lighting device according to claim 19, further comprises a step of adjusting brightness values of the illumination module and the image projection module in accordance with a projection mode of the image projection module.

### Claim 22 (depends on 19)

The control method of the smart lighting device according to claim 19, wherein the step of adjusting the brightness values of the illumination module and the image projection module in accordance with the brightness value of the sensed ambient light comprises steps of:
determining whether the brightness value of the ambient light reaches a default value; and
maintaining the brightness value of illumination module and adjusting the brightness value of the image projection module in accordance with the brightness value of the ambient light when the brightness value of the ambient light reaches the default value, or adjusting the brightness values of the illumination module and the image projection module in accordance with the ambient light and a default database when the brightness value of the ambient light does not reach the default value.

### Claim 23 (depends on 19)

The control method of the smart lighting device according to claim 19, wherein the step of adjusting the brightness values of the illumination module and the image projection module in accordance with the brightness value of the sensed ambient light comprises:
adjusting the brightness values of the illumination module and the image projection module in accordance with the brightness value of the ambient light and a default database.

### Claim 24 (depends on 19)

The control method of the smart lighting device according to claim 19, wherein the smart lighting device further comprises a camera assembly, and the camera assembly comprises a plurality of operation modes, and one of the operation modes is a shooting mode, and the brightness values of the illumination module and the image projection module are adjusted in accordance with the brightness value of the sensed ambient light when the smart lighting device is switched to the shooting mode.

### Claim 25 (depends on 24)

The control method of the smart lighting device according to claim 24, wherein the step of adjusting the brightness values of the illumination module and the image projection module in accordance with the brightness value of the sensed ambient light comprises:
determining whether the brightness value of the ambient light reaches a default value; and
maintaining the brightness value of the illumination module when the brightness value of the ambient light reaches the default value or adjusting the brightness value of the illumination module in accordance with the brightness value of the ambient light and a default database when the brightness value of the ambient light does not reach the default value.

### Claim 26 (depends on 24)

The control method of the smart lighting device according to claim 24, wherein the step of adjusting the brightness values of the illumination module and the image projection module in accordance with the brightness value of the sensed ambient light comprises:
adjusting the brightness values of the illumination module and the image projection module in accordance with the brightness values of the ambient light and the default database.

### Claim 27 (depends on 24)

The control method of the smart lighting device according to claim 24, wherein the smart lighting device further comprises a sensing module, and the sensing module has an absolute coordinate mode and a relative coordinate mode, and the projection modes further comprises at least one wall surface projection mode, and the sensing module is switched to the absolute coordinate mode when the image projection module is switched to the bearing surface mode, or the sensing module is switched to the relative coordinate mode when the image projection module is switched to each of the wall surface modes.

### Claim 28

A control method of a smart lighting device comprising first and second operation modes, capable of applying in a smart lighting device comprising a processing module electrically connected with an illumination module, an image projection module, and a light sensing assembly, wherein the image projection module is adjacent to the illumination module and is pivotally connected to the illumination module, the image projection module has a plurality of projection modes, the projection modes are formed by different rotation angles of the image projection module relative to the illumination module, and the control method of the smart lighting device comprising:
preferentially adjusting a brightness value of the image projection module through the processing module in accordance with a brightness value of the sensed ambient light under the first operation mode; or
preferentially adjusting a brightness value of the illumination module through the processing module in accordance with the brightness value of the sensed ambient light under the second operation mode.

### Claim 29 (depends on 28)

The control method of the smart lighting device according to claim 28, wherein the first operation mode of the smart lighting device is an image projection operation mode.

### Claim 30 (depends on 28)

The control method of the smart lighting device according to claim 28, wherein the second operation mode of the smart lighting device is an image identification operation mode.

### Claim 31 (depends on 28)

The control method of the smart lighting device according to claim 28, wherein the step of preferentially adjusting the brightness value of the image projection module is to adjust a brightness value of an image frame projected by the image projection module to maintain the best projection brightness of the image frame when the brightness value of the ambient light is changed.

### Claim 32 (depends on 28)

The control method of the smart lighting device according to claim 28, wherein the step of preferentially adjusting the brightness value of the illumination module is to adjust a brightness value of the illumination module to maintain the best identification brightness when the brightness value of the ambient light is changed.