Portable electronic device with radio communication and controlled computer status
First Claim
1. An electronic device having a radio transmit-receive unit for performing radio communication processing with an external device via an antenna, and a computer unit for processing desired information, comprising:
- set control means for setting said computer unit to a rest state;
timer means for measuring a signal receive time of said radio transmit-receive unit in accordance with activation of said set control means and the computer unit in the rest state;
holding means for holding electric field strength information associated with at least one carrier received by said radio transmit-receive unit during the rest state of the computer unit; and
restart control means for switching the rest state of said computer unit to an active state after a predetermined period of time measured by said timer means.
0 Assignments
0 Petitions
Accused Products
Abstract
A radio transmit-receive unit can perform the communication processing stably without being affected by high frequency noise with the system activation of a computer unit, whereby if a communication processing request from the radio transmit-receive unit occurs, the computer unit sets the system state of a sub-CPU being activated to a rest state, a counter starts clocking the signal receive time of the radio transmit-receive unit when the system state of the sub-CPU is in a rest state, and a latch circuit holds electric field strength information of carrier received by the radio transmit-receive unit upon the termination of clocking by the counter. And the computer unit switches the system state of the sub-CPU being at rest to an active state, based on the end state of clocking by the counter, to restart the activation of the computer unit.
-
Citations
13 Claims
-
1. An electronic device having a radio transmit-receive unit for performing radio communication processing with an external device via an antenna, and a computer unit for processing desired information, comprising:
-
set control means for setting said computer unit to a rest state; timer means for measuring a signal receive time of said radio transmit-receive unit in accordance with activation of said set control means and the computer unit in the rest state; holding means for holding electric field strength information associated with at least one carrier received by said radio transmit-receive unit during the rest state of the computer unit; and restart control means for switching the rest state of said computer unit to an active state after a predetermined period of time measured by said timer means. - View Dependent Claims (2, 3, 4)
-
-
5. An electronic device having a radio transmit-receive unit for performing radio communication processing with an external device via an antenna, and a computer unit for processing desired information, comprising:
-
set control means for setting said computer unit to a halt state; timer means for measuring a signal receive time of said radio transmit-receive unit in accordance with activation of said set control means and the computer unit in the halt state; holding means for holding electric information regarding at least one carrier received by said radio transmit-receive unit in the halt state; and restart control means for switching the halt state of said computer unit to an active state after a predetermined period of time measured by said timer means.
-
-
6. An electronic device having a radio transmit-receive unit for performing radio communication processing with an external device via an antenna, and a first computer unit for processing desired information, comprising:
-
a second computer unit for communicating with said radio transmit-receive unit; set control means for setting said second computer unit to a rest state; timer means for counting a signal receive time of said radio transmit-receive unit in accordance with activation of said set control means and the second computer in the rest state; holding means for holding receivable channel information of at least one carrier received by said radio transmit-receive unit in the rest state; and restart control means for switching the rest state of said second computer unit to an active state after counting up to a desired count by said timer means to set said receivable channel information held in said holding means by said second computer unit to said first computer unit. - View Dependent Claims (7, 8, 9)
-
-
10. An electronic device having a radio transmit-receive unit for performing radio communication processing with an external device via an antenna, and a first computer unit for processing desired information, comprising:
-
a second computer unit for communicating with said radio transmit-receive unit; set control means for setting said first computer unit and said second computer unit to a rest state; timer means for counting a signal receive time of said radio transmit-receive unit in accordance with activation of said set control means and the first and second computer units in the rest state; holding means for holding receivable channel information of at least one carrier received by said radio transmit-receive unit in the rest state; and restart control means for switching the rest state of said first computer unit and said second computer unit to an active state after counting up to a desired count by said timer means to set said receivable channel information held in said holding means by said second computer unit to said first computer unit. - View Dependent Claims (11, 12, 13)
-
Specification