PATENT CLAIM ANALYSIS

Application Number: 15747057
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-12
Patent Classification: ["250", "208100"]

Abstract:
In a sensor comprising active pixels including a photodiode PHD, a memory node MN and a read-out node SN, the memory node being provided to hold the charge generated by the photodiode at the end of an integration period enabling integration in global-shutter mode and a correlated double sampling read-out, provision is made for the charge-storage capacity of the memory node to be at least N times higher than the charge-storage capacity of the photodiode (N being an integer higher than or equal to 2) and provision is made to carry out, in each integration and read-out cycle, during the integration duration Tint(i), N transfers Tri 1 , Tri 2 , Tri 3  of charge from the photodiode to the memory node, the N transfers being equally distributed over the integration duration. The dynamic range of the sensor is improved under high light levels.

Claim (Index 1):
A method for taking images with an active-pixel sensor comprising at least one row of active pixels, in which the active pixels each comprise a photosensitive element, a read-out node and a memory node between the photosensitive element and the read-out node, and at least one first charge-transfer transistor between the photosensitive element and the memory node, one second charge-transfer transistor between the memory node and the read-out node, one transistor for resetting the read-out node, one follower transistor having its gate connected to the read-out node and one pixel-selection transistor that is connected between the source of the follower transistor and a column conductor, the image-taking method being such that each integration and read-out cycle comprises an integration duration common to all the pixels, then a correlated double sampling read-out phase in which the pixels of each row are successively read out,\n wherein for each integration and read-out cycle, the image-taking method commands a reset of all the photosensitive elements simultaneously by applying an initialization control pulse, and the end of said pulse sets the start of the integration duration common to all the pixels, allowing, in each pixel, the accumulation of photogenerated charge by the photosensitive element of the pixel throughout said integration duration, and, during the common integration duration, the image-taking method commands, simultaneously in all the pixels, N regularly spaced transfers of charge from the photosensitive element to the memory node, N being an integer higher than or equal to 2, the memory node being configured to have a charge-storage capacity that is at least N times that of the photosensitive element, the N transfers being commanded by applying, at regular intervals during said integration duration, N control pulses to the gate of the first transfer transistor, and the end of the Nth transfer sets the end of the common integration duration.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 86.0
- Lexical Diversity: 1.975
- Patent Class: 250.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12273164', '14353183', '12350677', '14770107', '15124894']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6819862974912804
- 35 USC 102 Novelty (BERT): 0.4913869837586761
- Combined Prediction Score: 0.6629263661180199
- Mean Citation Score: 233.218282
- Max Citation Score: 238.16238
- Similarity Product: 189.6428957692051

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