| US 7,489,177 B2 | ||
| Clock circuit for a microprocessor | ||
| Mark A. J. Carragher, Guelph (Canada); and John W. Wynen, Conestogo (Canada) | ||
| Assigned to Research In Motion Limited, Waterloo (Canada) | ||
| Filed on Jun. 05, 2006, as Appl. No. 11/446,915. | ||
| Application 11/446915 is a continuation of application No. 10/744793, filed on Dec. 23, 2003, granted, now 7,057,436. | ||
| Application 10/744793 is a continuation of application No. 10/004136, filed on Oct. 22, 2001, granted, now 6,693,477, filed on Oct. 22, 2001. | ||
| Prior Publication US 2006/0229033 A1, Oct. 12, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G06F 1/04 (2006.01) | ||
| U.S. Cl. 327—291 [327/294; 327/298] | 17 Claims |
| 1. A wireless communication device having a transmitter that generates electromagnetic interference when operating in a transmit
mode, the transmit mode being a mode during which the wireless communication device transmits data over a wireless network,
comprising:
a clock circuit including a first clock element configured to generate a first clock output, and a second clock element configured
to generate a second clock output; and
a controller configured to switch between the first clock output and the second clock output when the transmitter is operating
in the transmit mode such that the second clock output is output from the clock circuit when the wireless communication device
is operating in the transmit mode and the first clock output is output from the clock circuit when the wireless communication
device is not operating in the transmit mode;
wherein the first clock element is an analog clock element and the first clock output is an oscillating clock output; and
wherein the second clock element is a digital clock element and the second clock output is a digital clock output.
|