PATENT CLAIM ANALYSIS

Application Number: 15886202
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-08
Patent Classification: ["348", "078000"]

Abstract:
A gaze-tracking system for use in a head-mounted display apparatus and an aperture device. The gaze-tracking system includes a first light source and a second light source operable to emit light of first and second type respectively; an image sensor operable to capture an image of the user's eye and reflections of the light of first type from the user's eye; a primary lens; an aperture device positioned between the image sensor and the primary lens, and a processor configured to control the first and second light sources and image sensor, and to process the captured image to detect a gaze direction of the user. The aperture device provides a first aperture to the light of first type and a second aperture to the light of second type, the first aperture and the second aperture being substantially concentric, the first aperture being smaller than the second aperture.

Claim (Index 1):
A gaze-tracking system for use in a head-mounted display apparatus, the gaze-tracking system comprising:\n a first light source, the first light source being operable to emit light of a first type, wherein the light of the first type is to be directed towards a user's eye when the head-mounted display apparatus is worn by the user; a second light source, the second light source being operable to emit light of a second type, wherein the light of the second type is to be used to diffusely illuminate the user's eye when the head-mounted display apparatus is worn by the user; an image sensor, the image sensor being operable to capture an image of the user's eye and reflections of the light of the first type from the user's eye, wherein the reflections of the light of the first type appear as at least one glint in the captured image, while the light of the second type enables pupil detection in the captured image, an optical path of the light of the first type being longer than an optical path of light related to the user's eye; a primary lens associated with the image sensor; an aperture device, the aperture device being positioned between the image sensor and the primary lens, wherein the aperture device provides a first aperture to the light of the first type and a second aperture to the light of the second type, the first aperture and the second aperture being substantially concentric, the first aperture being smaller than the second aperture; and a processor coupled in communication with the first light source, the second light source and the image sensor, the processor being configured to control the first light source, the second light source and the image sensor, and to process the captured image to detect a gaze direction of the user.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 88.0
- Lexical Diversity: 2.78947
- Patent Class: 348.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15885984', '15886003', '15886023', '15648936', '15842260']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6330847020172443
- 35 USC 102 Novelty (BERT): 0.4726061864461952
- Combined Prediction Score: 0.6170368504601395
- Mean Citation Score: 220.062536
- Max Citation Score: 229.74532
- Similarity Product: 205.33744324586868

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