PATENT CLAIM ANALYSIS

Application Number: 15926724
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["353", "101000"]

Abstract:
An autofocus method for a projector is provided. A projection lens of the projector projects at least projecting one image. The image includes a correction image. The projection lens has a focal length. The autofocus method includes: projecting the correction image; capturing the correction image; capturing a luminance parameter value of the correction image; controlling the focal length of the projection lens according to the luminance parameter value, wherein a process of controlling the focal length of the projection lens according to the luminance parameter value comprises a coarse adjustment phase and a fine adjustment phase, and the luminance parameter value changes with the adjustment of the focal length of the projection lens; and finding a maximum of the luminance parameter value. An autofocus system and a projector having the autofocus system are also provided.

Claim (Index 5):
The projector according to  claim 4 , wherein when the projection lens projects a plurality of the images, the processor determines the focal length and stops controlling the lens driver, the correction image is present in at least two of the plurality of images, and the two correction images are defined as a previous correction image in a previous image and a subsequent correction image in a subsequent image respectively, wherein when a reduced value of the luminance parameter value of the subsequent correction image with respective to the luminance parameter value of the previous correction image is greater than a threshold, the processor re-controls the lens driver to adjust the focal length of the projection lens.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 90.0
- Lexical Diversity: 2.84615
- Patent Class: 353.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10790214', '12082528', '12541248', '11319269', '15522619']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7343271963374324
- 35 USC 102 Novelty (BERT): 0.4934864945830978
- Combined Prediction Score: 0.7102431261619989
- Mean Citation Score: 203.238968
- Max Citation Score: 221.69945
- Similarity Product: 161.99661095466018

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