Method and apparatus for transmitter for universal garage door opener
First Claim
1. A universal remote control radio frequency (RF) transmitter for selective actuation of one of a plurality of receiver units, each receiver unit receiving a particular carrier frequency modulated according to a particular modulation code, said universal remote control transmitter comprising in operative combination:
- a) a first switching unit including a plurality of switches, each switch having at least three user selectable settings, said switches of said first switching unit set by said user to a selected one of a plurality of combinations of settings, each combination corresponding to one of a plurality of modulation codes;
b) a second switching unit including a plurality of switches, each switch having a plurality of user selectable settings, said switches of said second switching unit set by said user to a selected one of a plurality of combinations of said settings, each combination corresponding to one of a plurality of possible carrier frequencies;
c) a plurality of transmitter circuits, each of said transmitter circuits for transmitting a particular one of said plurality of possible carrier frequencies; and
d) controller means responsive to said first and second switching units for selective actuation and modulation of said plurality of transmitter circuits, said controller means comprising;
i) means responsive to selected switch settings of said second switching unit for selecting a particular one of said transmitter circuits for transmission of a particular one of said carrier frequencies; and
ii) means responsive to selected switch settings of said first switching unit for outputting a modulation signal corresponding to said modulation code for modulating said carrier frequency selected by said second switching unit.
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Accused Products
Abstract
A universal remote control transmitter for use with garage door openers including a number of switches whereby a user can program a transmitted modulation format and carrier frequency, and a controller for scanning the switches to determine the user programmed selections. The controller, in response to the programmed selections, outputs the required modulation to a selected transmitter, as well as direction to fine tune the transmitter to the particular carrier frequency. Also included is a power sensor circuit that responds to a change in power supply voltage by adjusting the modulation to maintain a constant peak transmitter output power.
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Citations
12 Claims
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1. A universal remote control radio frequency (RF) transmitter for selective actuation of one of a plurality of receiver units, each receiver unit receiving a particular carrier frequency modulated according to a particular modulation code, said universal remote control transmitter comprising in operative combination:
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a) a first switching unit including a plurality of switches, each switch having at least three user selectable settings, said switches of said first switching unit set by said user to a selected one of a plurality of combinations of settings, each combination corresponding to one of a plurality of modulation codes; b) a second switching unit including a plurality of switches, each switch having a plurality of user selectable settings, said switches of said second switching unit set by said user to a selected one of a plurality of combinations of said settings, each combination corresponding to one of a plurality of possible carrier frequencies; c) a plurality of transmitter circuits, each of said transmitter circuits for transmitting a particular one of said plurality of possible carrier frequencies; and d) controller means responsive to said first and second switching units for selective actuation and modulation of said plurality of transmitter circuits, said controller means comprising; i) means responsive to selected switch settings of said second switching unit for selecting a particular one of said transmitter circuits for transmission of a particular one of said carrier frequencies; and ii) means responsive to selected switch settings of said first switching unit for outputting a modulation signal corresponding to said modulation code for modulating said carrier frequency selected by said second switching unit. - View Dependent Claims (2, 3)
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4. A universal remote control radio frequency (RF) transmitter for selective actuation of one of a plurality of receiver units, each receiver unit receiving a particular carrier frequency modulated according to a particular modulation code, said universal remote control transmitter comprising in operative combination:
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a) a first switching unit including a plurality of switches, each switch having at least three user selected settings, said switches of said first switching unit set by said user to a selected one of a plurality of combinations of said settings, each combination corresponding to one of a plurality of modulation codes; b) a second switching unit including a plurality of switches, each switch having a plurality of user selectable settings, said switches of said second switching unit set by said user to a selected one of a plurality of combinations of said settings, each combination corresponding to one of a plurality of possible carrier frequencies; c) one or more transmitter circuits, each having a tuning means responsive to a tuning signal for transmitting a particular carrier frequency selected from within a bandwidth of carrier frequencies; d) controller means responsive to said first and second switching units for selective actuation and modulation of a selected one of said transmitter circuits, said controller means comprising; i) means responsive to selected switch settings of said second switching unit for selecting a particular one of said transmitter circuits and for generating said tuning signal; and ii) means responsive to selected switch settings of said first switching unit for outputting a modulation signal corresponding to said modulation code for modulating said carrier frequency selected by said second switching unit. - View Dependent Claims (5)
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6. A universal remote control radio frequency (RF) transmitter for selective actuation of one of a plurality of receiver units, each receiver unit receiving a particular carrier frequency modulated according to a particular modulation code, said universal remote control transmitter comprising in operative combination:
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a) a first switching unit including a plurality of switches, each switch having a plurality of user selected settings, said switches set by said user to a selected one of a plurality of combinations of said settings, each combination corresponding to one of a plurality of modulation codes; b) a second switching unit including a plurality of switches, each switch having a plurality of user selectable settings, said switches of said second switching unit set by said user to a selected one of a plurality of combinations of said settings, each combination corresponding to one of a plurality of possible carrier frequencies; c) one or more transmitter circuits, each having a tuning means responsive to a tuning signal for transmitting a particular carrier frequency selected from within a bandwidth of carrier frequencies; d) a battery having a battery voltage for supplying energy to said remote control transmitter; e) controller means responsive to said first and second switching units for selective actuation and modulation of a selected one of said transmitter circuits, said controller means including. i) means responsive to selected switch settings of said second switching unit for selecting a particular one of said transmitter circuits and for generating said tuning signal, ii) means responsive to selected switch settings of said first switching unit for outputting a modulation signal corresponding to said modulation code for modulating said carrier frequency selected by said second switching unit, iii) means for sensing said battery voltage, and iv) means responsive to said means for sensing for providing an adjusted modulation signal to said particular one of said transmitter circuits to maintain a constant output power, independent of supply variations in said battery voltage; and wherein said means responsive to said sensing means further includes a selection of lines, to carry said modulation signal, each of said lines having a distinct voltage divider means for modifying said modulation signal to drive a selected one of said transmitter circuits at said constant output power.
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7. A universal remote control radio frequency (RF) transmitter for selective actuation of one of a plurality of receiver units, each receiver unit receiving a particular carrier frequency modulated according to a particular modulation code, said universal remote control transmitter comprising in operative combination:
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a) switching means including a plurality of switches, and at least two of said switches being multiple position switches having at least three user selectable settings, said plurality of switches set by said user to a selected one of a plurality of combinations of settings, each combination corresponding to one of a plurality of modulation codes and one of a plurality of carrier frequencies; b) a plurality of transmitter circuits, each of said transmitter circuits for transmitting a particular one of said plurality of carrier frequencies; and c) controller means responsive to said switching means for selective actuation and modulation of said plurality of transmitter circuits, said controller means, including; means responsive to selected switch settings of said switching means for selecting a particular one of said transmitter circuits for transmission of a particular one of said carrier frequencies, and for outputting a modulation signal corresponding to said modulation code for modulating said carrier frequency selected by said switching means. - View Dependent Claims (8, 9)
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10. A universal remote control radio frequency (RF) transmitter for selective actuation of one of a plurality of receiver units, each receiver unit receiving a particular carrier frequency modulated according to a particular modulation code, said universal remote control transmitter comprising in operative combination:
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a) switching means including a plurality of switches, at least two of said switches being multiple position switches having at least three user selectable settings, said plurality of switches set by said user to a selected one of a plurality of combinations of said settings, each combination corresponding to one of a plurality of modulation codes and one of a plurality of carrier frequencies; b) one or more transmitter circuits, each having a tuning means responsive to a tuning signal for transmitting a particular carrier frequency selected from within a bandwidth of carrier frequencies; c) controller means responsive to said switching means for selective actuation and modulation of a selected one of said transmitter circuits, said controller means, including; means responsive to selected switch settings of said switching means for selecting a particular one of said transmitter circuits and for generating said tuning signal, and for outputting a modulation signal corresponding to said modulation code for modulating said carrier frequency selected by said switching means. - View Dependent Claims (11, 12)
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Specification