Appeal No. 2005-1123 Page 4
Application No. 10/062,921
feature is especially advantageous in rooms where more than one window covering
assembly is to be installed” (column 9, lines 46-48). When the UP or DOWN button on
the transmitter 218 is pushed, a coded sequence of pulses corresponding to the button
pushed and the channel selected is generated. This sequence comprises a command
signal and has an identical number of pulses, with the sequence being repeated as long
as the button is depressed. Each pulse in a sequence is modulated with a 38 kHz
carrier before being transmitted.
The IR receiver filters and demodulates the sensed command signal and outputs
a sequence of pulses corresponding to that generated within the transmitter before
being modulated. The pulses are read by the processor 214 and matched against a
reference sequence stored in ROM. If a match occurs, the processor sends out the
appropriate signals to energize the motor. See column 9, last paragraph.
Hosono discloses a remote control transmitter comprising a laser beam emitter 6
for emitting a laser beam 10, an infrared light emitter 5, a convex lens 14 for restricting
the directivity of the infrared light 11 and a half mirror 13 for making the directivity of the
infrared light 11 and laser beam 10 the same. See Figure 4 and page 6 of the
appended translation. As illustrated in Figure 4, the infrared beam 11 is broader than
the visible laser beam 10. Hosono teaches that the laser beam emitter emits visible
light (laser beam 10) for the purpose of ensuring that the target device is the
transmission target for the command contents of the infrared light (translation, page 1).
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Last modified: November 3, 2007