Invention Grant
- Patent Title: Control of light-emitting diodes and sensors
- Patent Title (中): 控制发光二极管和传感器
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Application No.: US13755181Application Date: 2013-01-31
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Publication No.: US08902426B2Publication Date: 2014-12-02
- Inventor: Javier Gonzalez Bruno , Marti Rius Rossell , Jordi Ferran Cases
- Applicant: Hewlett-Packard Development Company, L.P.
- Applicant Address: US TX Houston
- Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee Address: US TX Houston
- Main IPC: G01N21/25
- IPC: G01N21/25 ; G03G15/00 ; B41J29/38 ; G01J1/02 ; G01J3/46 ; G01J3/50 ; B41J2/125
Abstract:
A densitometer includes a plurality of light-emitting diodes (LEDs) and at least one sensor. The LEDs are activated one at a time in a sequential, repeatable order. Photonic energy from each LED is reflected off an entity and is incident upon the sensor(s). Circuitry samples or acquires signaling from the sensor(s) in accordance with the respective LED activations. Signaling from the densitometer can be used in controlling ink-jetting printers or other apparatus.
Public/Granted literature
- US20140210891A1 CONTROL OF LIGHT-EMITTING DIODES AND SENSORS Public/Granted day:2014-07-31
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