Digital electrochromic mirror system
First Claim
1. A vehicular electrochromic rearview mirror system, comprising:
- a plurality of electrochromic rearview mirror assemblies and a plurality of electrochromic reflective elements, each associated with one of said electrochromic rearview mirror assemblies, wherein each of said electrochromic reflective elements assumes a partial reflectance level in response to a signal applied thereto;
a drive circuit applying a drive signal to each of said electrochromic reflective elements, said drive circuit comprising a digital controller, a master drive circuit responsive to said digital controller to apply a first drive signal to one of said electrochromic reflective elements, and a slave drive circuit responsive to said digital controller to apply a second drive signal to a second of said electrochromic reflective elements, said second drive signal derived from said first drive signal.
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Accused Products
Abstract
A vehicular electrochromic rearview mirror system includes an interior electrochromic rearview mirror assembly and at least one exterior electrochromic rearview mirror assembly. Each mirror assembly includes an electrochromic reflective element that assumes a partial reflectance level in response to a signal applied thereto. A drive circuit applies a drive signal to each of the electrochromic reflective elements. The drive circuit may include a digital controller, a master drive circuit responsive to the digital controller to apply a first drive signal to one of the electrochromic reflective elements and a slave drive circuit responsive to the digital controller to apply a second drive signal to a second of the electrochromic reflective elements. The second drive signal may be derived from the first drive signal. The drive circuit may include a digital controller and a switching power supply controlled by the digital controller to produce a drive signal.
153 Citations
81 Claims
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1. A vehicular electrochromic rearview mirror system, comprising:
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a plurality of electrochromic rearview mirror assemblies and a plurality of electrochromic reflective elements, each associated with one of said electrochromic rearview mirror assemblies, wherein each of said electrochromic reflective elements assumes a partial reflectance level in response to a signal applied thereto; a drive circuit applying a drive signal to each of said electrochromic reflective elements, said drive circuit comprising a digital controller, a master drive circuit responsive to said digital controller to apply a first drive signal to one of said electrochromic reflective elements, and a slave drive circuit responsive to said digital controller to apply a second drive signal to a second of said electrochromic reflective elements, said second drive signal derived from said first drive signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A vehicular electrochromic rearview mirror system, comprising:
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an interior electrochromic rearview mirror assembly having an interior electrochromic reflective element that assumes a partial reflectance level in response to a first drive signal applied thereto; at least one exterior electrochromic rearview mirror assembly having an exterior electrochromic reflective element that assumes a partial reflectance level in response to a second drive signal applied thereto; and a drive circuit including a master drive circuit producing one of said first and second drive signals and a slave drive circuit producing the other of said first and second drive signals, wherein the other of said drive signals is derived from the one of said drive signals. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. A vehicular electrochromic rearview mirror system, comprising:
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a first electrochromic rearview mirror assembly having a first electrochromic reflective element that assumes a partial reflectance level in response to a master drive signal applied thereto; a second electrochromic rearview mirror assembly having a second electrochromic reflective element that assumes a partial reflectance level in response to a slave drive signal applied thereto; and a drive circuit including a master drive circuit comprising a switching power supply producing said master drive signal, a slave drive circuit comprising a proportional controller producing said slave drive signal from said master drive signal and a controller controlling said switching power supply and said proportional controller. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81)
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Specification