IP Library › Granted Patent US 12,429,742
Granted Patent B2
US 12,429,742 · App. 18/150,146 · Granted Sep 30, 2025

Methods of controlling multi-zone tintable windows

Inventors: Erich Robert Klawuhn (Santa Barbara, CA); Stephen Clark Brown (San Mateo, CA); Dhairya Shrivastava (Los Altos, CA); Douglas S. Silkwood (San Jose, CA); Jason David Zedlitz (Rancho Cordova, CA); Trevor Gustav Frank (San Jose, CA); Charudatta Joshi (Fremont, CA); Thomas Anthony Gubiotti (Mountain View, CA)
Assignee: View Operating Corporation
G02F1/163E06B3/6722E06B9/24G02F1/133504G02F1/133514G02F1/133553E06B2009/2405E06B2009/2411E06B2009/2464G02F1/157
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Quick Facts
Patent No.
US 12,429,742
App. No.
18/150,146
Granted
Sep 30, 2025
Kind
B2
Abstract

Window controllers and methods for controlling tinting and other functions of tinting zones of multi-zone tintable windows and multiple tinting zones of a group of tintable windows.

Claims (28)

1. A control system for controlling a plurality of tinting zones of a tintable window, the control system comprising:

at least one window controller; and

at least first and second voltage regulators connected in parallel to the at least one window controller,

wherein,

the first voltage regulator is connected to one or more first bus bars configured to apply voltage and/or current to a first side of a first tinting zone of the plurality of tinting zones, the second voltage regulator is connected to one or more second bus bars configured to apply voltage and/or current to a first side of a second tinting zone of the plurality of tinting zones, and

the at least one window controller applies a same voltage to a plurality of third bus bars collectively disposed at second sides of the first and second tinting zones opposite the respective first sides.

2. The control system of claim 1 , wherein each of the at least first and second voltage regulators is part of a window assembly comprising the tintable window.

3. The control system of claim 1 , wherein each of the at least first and second voltage regulators is in a secondary seal of an insulated glass unit of the tintable window.

4. The control system of claim 1 , wherein the at least one window controller comprises an onboard controller.

5. The control system of claim 1 , wherein the at least first and second voltage regulators are configured to control tinting of the tinting window that causes a curtaining effect.

6. The control system of claim 1 , wherein the at least first and second voltage regulators are in electrical communication with the at least one window controller via a communication bus.

7. The control system of claim 1 , wherein each of the tinting zones comprises a horizontal strip of the tintable window.

8. The control system of claim 1 , wherein the voltage regulators are configured for transitioning tint of at least one of the tinting zones when a shadow or direct sunlight impinges the at least one tinting zone.

9. The control system of claim 1 , wherein the at least first and second voltage regulators are configured to control tint of the plurality of tinting zones based at least in part on tracking of where sunlight strikes the tintable window in real time.

10. The control system of claim 1 , wherein the at least first and second voltage regulators are configured to use input received from one or more sensors to control tint of the plurality of tinting zones.

11. The control system of claim 10 , wherein one or more sensors comprise at least one illuminance sensor.

12. The control system of claim 1 , wherein each of the at least first and second voltage regulators comprises logic for applying the voltage and/or the current based at least in part on instructions from the at least one window controller.

13. The control system of claim 12 , wherein the instructions from the at least one window controller are based at least in part on one or more of a communication from a higher level window controller, a step-down power, or a determination of the voltage and/or the current to be applied.

14. The control system of claim 1 , wherein the voltage and/or the current is based at least in part on one or more of a drive voltage, a hold time, a ramp profile, or a hold voltage.

15. A method of controlling tint of a plurality of tinting zones of a tintable window, the method comprising:

(a) determining a voltage and/or a current to apply to each tinting zone of the plurality of tinting zones; and

(b) using at least one window controller to: (i) apply the voltage and/or current for a first tinting zone of the plurality of tinting zones to a first voltage regulator connected to one or more first bus bars configured to apply respective voltage and/or current to a first side of the first tinting zone; (ii) apply the voltage and/or current for a second tinting zone of the plurality of tinting zones to a second voltage regulator connected to one or more second bus bars configured to apply respective voltage and/or current to a first side of the second tinting zone; and (iii) apply a same voltage to a plurality of third bus bars collectively disposed at second sides of the first and second tinting zones opposite the respective first sides.

16. The method of claim 15 , wherein the voltage and/or the current is determined based at least in part on one or more of a drive voltage, a hold time, a ramp profile, or a hold voltage.

17. The method of claim 15 , wherein the voltage and/or the current is determined based at least in part on one or more of a communication from a higher level window controller, a step-down power, or a determination of the voltage and/or the current to be applied.

18. The method of claim 15 , wherein the application of the voltage and/or current to each tinting zone of the plurality of tinting zones causes a curtaining effect.

19. The method of claim 15 , wherein each of the tinting zones comprises a horizontal strip of the tintable window.

20. The method of claim 15 , wherein the application of the voltage and/or current to each tinting zone of the plurality of tinting zones is determined based at least in part on tracking of where sunlight strikes the tintable window in real time.

21. The method of claim 15 , wherein the voltage and/or the current is determined based at least in part on input received from one or more sensors to control tint of the plurality of tinting zones.

Assignments (4)
MERGER AND CHANGE OF NAME Recorded Aug 28, 2025
From: VIEW, INC.; PVMS MERGER SUB, INC.; VIEW, INC.
To: VIEW OPERATING CORPORATION
Reel/Frame 076090/0186 →
MERGER AND CHANGE OF NAME Recorded Dec 19, 2024
From: VIEW, INC.; PVMS MERGER SUB, INC.; VIEW OPERATING CORPORATION
To: VIEW OPERATING CORPORATION
Reel/Frame 069743/0586 →
SECURITY INTEREST Recorded Oct 17, 2023
From: VIEW, INC.
To: CANTOR FITZGERALD SECURITIES
Reel/Frame 065266/0810 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 20, 2023
From: KLAWUHN, ERICH R.; BROWN, STEPHEN C.; SHRIVASTAVA, DHAIRYA; SILKWOOD, DOUGLAS S.; ZEDLITZ, JASON; FRANK, TREVOR; JOSHI, CHARUDATTA; GUBIOTTI, THOMAS A.
To: VIEW, INC.
Reel/Frame 062439/0627 →
Continuity (12)
Continuation In Part 17654563 · Mar 11, 2022
Division 16388743 · Apr 18, 2019
Division 15762077
Continuation 15094897 · Apr 8, 2016
Continuation 14137644 · Dec 20, 2013
Continuation In Part PCTUS2013069913 · Nov 13, 2013
Continuation In Part PCTUS2013031098 · Mar 13, 2013
Provisional Application 62236032 · Oct 1, 2015
Provisional Application 61740651 · Dec 21, 2012
Provisional Application 61725980 · Nov 13, 2012
Provisional Application 61610241 · Mar 13, 2012
Related Publication 20230152654A1 · May 18, 2023
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