Radio-controlled device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 9, 2007
Grant Date -
Nov 13, 2003
app pub date -
May 8, 2003
filing date -
May 10, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A radio-controlled device is provided that has improved steering responsivity. The radio-controlled device consists of a transmitter, a receiver, and digital servomechanisms. A PPM signal format of signals transmitted from the transmitter is shown in FIG. 4(a). Signals having time widths (T1, T2, t3) proportional to displacements of a transmitter joystick are distributed to drive the servomechanisms. As shown in FIG. 4(b), the transmission side transmits, to a final channel CH3, a signal having a time width of T3 (=t3+R), being the sum of the time width t3 and a reset reference value R (Nt3-Nt1). The receiver side subtracts the reset reference value R, thus restoring it to the original time width t3. By adding the reset reference value R, the minimum value L3 of a signal in the final channel is larger than the maximum value V1 of other signal.
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