PATENT CLAIM ANALYSIS

Application Number: 15933122
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["348", "053000"]

Abstract:
A head-mounted device (HMD) is configured to perform head tracking, even in low light environments. The HMD includes a stereo camera pair that includes a first camera and a second camera having overlapping fields of view. Both cameras are mounted on the HMD and are configured to detect both visible light and infrared (IR) light. The HMD also includes a flood IR light illuminator that is configured to emit a flood of IR light that spans an illumination area that overlaps with the cameras' fields of view. The intensity of the IR light is sometimes modified to accommodate low light environmental conditions. The cameras obtain images of reflected IR light. These images are then used to track movements of the HMD, even in low light environments.

Claim (Index 1):
A head-mounted device (HMD) configured for performing head tracking in a low light environment, the HMD comprising:\n one or more processors; one or more computer-readable media having stored thereon computer-executable instructions which are operable, when executed by the one or more processors, to cause the HMD to selectively turn on a flood infrared (IR) light illuminator in response to detecting the presence of a low light environment; a head tracking stereo camera pair comprising a first camera and a second camera which are both mounted on the HMD, wherein:\n an overlapping field of view region is created as a result of at least a part of a field of view of the first camera overlapping at least a part of a field of view of the second camera, \n both the first camera and the second camera are configured to obtain one or more visible light and IR light images of the low light environment, and \n the one or more visible light and IR light images are used to track movements of the HMD; and \n the flood infrared (IR) light illuminator configured to emit a flood of IR light that spans an illumination area, wherein:\n the flood IR light illuminator is mounted on the HMD, \n both the first camera and the second camera are also configured to obtain one or more images of at least some of the flood of IR light, and \n the one or more IR light images are used to improve camera-based tracking of the movements of the HMD.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 90.0
- Lexical Diversity: 2.0
- Patent Class: 348.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15933101', '15928787', '15684675', '15447064', '15334216']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6313709607455655
- 35 USC 102 Novelty (BERT): 0.5961910603249307
- Combined Prediction Score: 0.6278529707035021
- Mean Citation Score: 307.767778
- Max Citation Score: 512.9137599999998
- Similarity Product: 486.0216742863272

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