Optical Sensing Apparatus
AssigneeArtilux, Inc.
InventorPeng-Sheng Chen
Life of this patent
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Abstract
Apparatuses for optical and image sensing are disclosed herein. The optical sensing apparatus can include a first and a second signal wire. The optical sensing apparatus can include N photodetectors arranged in an array, connected to the first signal wire and a second input terminal connected to the second signal wire. The optical sensing apparatus can include a modulation circuit configured to generate a modulated signal including a source transistor pair, a sink transistor pair, and a second sink transistor wherein a first photodetector of the N photodetectors is arranged between the source transistor pair and an Nth photodetector of the N photodetectors, and the Nth photodetector of the N photodetectors is arranged between the sink transistor pair and the first photodetector of the N photodetectors.
Claims20
An optical sensing apparatus, comprising:
- a first signal wire;
- a second signal wire;
- N photodetectors arranged in an array, each photodetector comprising a first input terminal connected to the first signal wire and a second input terminal connected to the second signal wire, wherein Nis a positive integer greater than one;
- a modulation circuit configured to generate a modulated signal and comprising:
- a source transistor pair comprising:
- a first source transistor comprising a first terminal connected to a first voltage source;
- a second terminal connected to a first end of the first signal wire;
- and a third terminal connected to a first driver signal;
- and
- a second source transistor comprising a first terminal connected to the first voltage source;
- a second terminal connected to a first end of the second signal wire;
- and a third terminal connected to a second driver signal;
- and
- a sink transistor pair comprising:
- a first sink transistor comprising a first terminal connected to a second voltage source;
- a second terminal connected to a second end of the first signal wire;
- and a third terminal connected to the second driver signal;
- and
- a second sink transistor comprising a first terminal connected to the second voltage source;
- a second terminal connected to a second end of the second signal wire;
- and a third terminal connected to the first driver signal,
- wherein a first photodetector of the N photodetectors is arranged between the source transistor pair and an Nth photodetector of the N photodetectors, and
- wherein the Nth photodetector of the N photodetectors is arranged between the sink transistor pair and the first photodetector of the N photodetectors.
An image sensing apparatus, comprising:
- a first signal wire;
- a second signal wire;
- N photodetectors arranged in an array, each photodetector comprising a first input terminal connected to the first signal wire and a second input terminal connected to the second signal wire, wherein N is a positive integer greater than one;
- a modulation circuit configured to generate a modulated signal and comprising:
- a source transistor pair comprising:
- a first source transistor comprising a first terminal connected to a first voltage source;
- a second terminal connected to a first end of the first signal wire;
- and a third terminal connected to a first driver signal;
- and
- a second source transistor comprising a first terminal connected to the first voltage source;
- a second terminal connected to a first end of the second signal wire;
- and a third terminal connected to a second driver signal;
- and
- a sink transistor pair comprising:
- a first sink transistor comprising a first terminal connected to a second voltage source;
- a second terminal connected to a second end of the first signal wire;
- and a third terminal connected to the second driver signal;
- and
- a second sink transistor comprising a first terminal connected to the second voltage source;
- a second terminal connected to a second end of the second signal wire;
- and a third terminal connected to the first driver signal,
- wherein a first photodetector of the N photodetectors is arranged between the source transistor pair and an Nth photodetector of the N photodetectors, and
- wherein the Nth photodetector of the N photodetectors is arranged between the sink transistor pair and the first photodetector of the N photodetectors.
Dependencies are inferred from the claim text.