PATENT CLAIM ANALYSIS

Application Number: 16213043
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["348", "078000"]

Abstract:
There is provided a pupil tracking device including an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball alternatively in a first brightness value and a second brightness value. The image sensor captures a first brightness image corresponding to the first brightness value and a second brightness image corresponding to the second brightness value. The processing unit identifies a brightest region at corresponding positions of the first brightness image and the second brightness image as an active light image.

Claim (Index 9):
A pupil tracking device, comprising:\n a single light source configured to emit light toward an eyeball in a first brightness value at a first time to form a first reflection spot on the eyeball, and the single light source configured to emit light toward the eyeball in a second brightness value at a second time to form a second reflection spot on the eyeball, wherein the first brightness value is different from the second brightness value, and the first time is different from the second time; an image sensor configured to capture a first image containing a brightest region associated with the first reflection spot on the eyeball corresponding to the first brightness value and a second image containing a brightest region associated with the second reflection spot on the eyeball corresponding to the second brightness value; and a processing unit electrically coupled to the image sensor and the single light source, and configured to\n calculate a differential image by subtracting the second image from the first image, and \n identify one of two darkest regions in the differential image having a smaller area and corresponding to a position of the brightest region in the first or second image as an image of the single light source projected on the eyeball, and the other one of the two darkest regions in the differential image having a larger area as a pupil image.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 98.0
- Lexical Diversity: 2.35
- Patent Class: 348.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15253503', '14054724', '15571997', '10486586', '14918262']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.633564530661831
- 35 USC 102 Novelty (BERT): 0.5764672542015801
- Combined Prediction Score: 0.627854803015806
- Mean Citation Score: 295.173174
- Max Citation Score: 462.5444
- Similarity Product: 458.27325984227656

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test