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 4):
A projector, comprising:\n a light valve, adapted to generate at least one image; a projection lens, adapted to project the image and having a focal length; a lens driver, coupled to the projection lens and adapted to adjust the focal length of the projection lens; and an autofocus system, comprising:\n a processor, electrically connected to the light valve and the lens driver, adapted to control the light valve to add a correction image into the image; \n an image sensing component, disposed toward the image and adapted to capture the correction image; and \n an image signal processor, electrically connected to the image sensing component and the processor, adapted to receive a luminance parameter value of the correction image from the image sensing component, wherein the processor controls the lens driver to adjust the focal length of the projection lens according to the luminance parameter value, and the processor adjusts the focal length of the projection lens and changes the luminance parameter value to find a maximum of the luminance parameter value.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 90.0
- Lexical Diversity: 2.84615
- Patent Class: 353.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['10790214', '12082528', '12541248', '11319269', '15522619']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7120963871756778
- 35 USC 102 Novelty (BERT): 0.4831011784237932
- Combined Prediction Score: 0.6891968663004893
- Mean Citation Score: 203.238968
- Max Citation Score: 221.69945
- Similarity Product: 177.37210302966236

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

Dataset: test