System and method for reducing power consumption in waiting mode
First Claim
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1. A timer for measuring a timing period comprising:
- a high frequency generating unit for generating high frequency oscillating signals;
a low frequency generating unit for generating low frequency oscillating signals; and
a controller in operative communication with said high frequency generating unit and said low frequency generating unit, said controller configured such that said high frequency generating unit can operate independently of said low frequency generating unit, said controller configured for deactivating said high frequency generating unit during at least a portion of said timing period, and said controller configured for counting predetermined portions of said high frequency oscillating signals with respect to at least one first transition of said low frequency oscillating signals, said transition defined by either a rise or a fall of a cycle of said low frequency oscillating signals.
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Abstract
A timer for measuring a time period including a high frequency generating unit, a low frequency generating unit and a controller connected to the high and low frequency generating units, wherein the controller deactivates the high frequency generating unit during at least a portion of the time period, detects and counts predetermined portions of the signals provided by the high and low frequency generating units and counts a plurality of the portions of the currently active frequency generating unit.
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Citations
9 Claims
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1. A timer for measuring a timing period comprising:
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a high frequency generating unit for generating high frequency oscillating signals;
a low frequency generating unit for generating low frequency oscillating signals; and
a controller in operative communication with said high frequency generating unit and said low frequency generating unit, said controller configured such that said high frequency generating unit can operate independently of said low frequency generating unit, said controller configured for deactivating said high frequency generating unit during at least a portion of said timing period, and said controller configured for counting predetermined portions of said high frequency oscillating signals with respect to at least one first transition of said low frequency oscillating signals, said transition defined by either a rise or a fall of a cycle of said low frequency oscillating signals. - View Dependent Claims (2)
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3. A method for providing an indication of a time period T which commences at time t1 and expires at time t2, the method comprising the steps of:
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activating a high timing level;
counting a first number M of predetermined cycle portions of said high timing level for determining a first partial time period at a first phase; and
activating a low timing level at time t1 at a second phase, independent from said first phase, said time t1 defined by the end of said first partial time period; and
counting a second predetermined number N of predetermined cycle portions of said high timing level until a first transition of said low timing level, said first transition corresponding to time t2. - View Dependent Claims (4, 5, 6, 7)
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6. The method according to claim 3 further comprising the step of deactivating said high timing level after said step of activating said low timing level.
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7. The method according to claim 3, further comprising the step of estimating the frequency of said low timing level.
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8. A communication system comprising:
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a receiver; and
a timer for measuring a time period comprising;
a high frequency generating unit for generating high frequency oscillating signals;
a low frequency generating unit for generating low frequency oscillating signals; and
a controller in operative communication with said receiver and said high frequency generating unit and said low frequency generating unit, said controller configured such that said high frequency generating unit can operate independently of said low frequency generating unit, said controller configured for deactivating said high frequency generating unit during at least a portion of said time period, said controller configured for deactivating said receiver during at least another portion of said time period, and said controller configured for counting predetermined portions of the high frequency oscillating signals with respect to at least one first transition of said low frequency oscillating signals, said transition defined by either a rise or a fall of a cycle of said low frequency oscillating signals. - View Dependent Claims (9)
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Specification