Apparatus and method for minimizing the turn on time for a receiver operating in a discontinuous receive mode
First Claim
1. In a communication unit including a receiver that receives a signal including at least a first word block and a second word block, wherein each word block has a predetermined time duration, wherein each word block has desirable data words repeated therein, and wherein the receiver has a discontinuous receive mode of operation wherein the receiver is selectively turned on and off, a method for minimizing a turn on time for the receiver operating in the discontinuous receive mode, the method comprising the steps of:
- turning on the receiver at a predetermined time prior to the arrival of each occurrence of the desirable data word;
verifying the integrity of the desirable data word responsive to receiving a number of occurrences of the desirable data word;
turning off the receiver for any remaining occurrences of the desirable data word within the predetermined time period responsive to the step of verifying the integrity of the desirable data word;
determining a variable time period that the receiver will be turned off responsive to the number of occurrences of the desirable data word used in the step of verifying and the predetermined time period; and
turning on the receiver at a time prior to the arrival of the second word block responsive to the variable time period.
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Accused Products
Abstract
An apparatus and a method for minimizing the turn on time for a receiver operating in a discontinuous receive mode. In a communication unit the receiver receives a signal (118) having desirable data (word A) and undesirable data (word B). The receiver (104) has a discontinuous receive mode of operation wherein the receiver (104) is turned on when expecting the desirable data (word A) and turned off when expecting the undesirable data (word B). A duration of time that the receiver (104) has been turned off is determined. The receiver (104) is turned on at time prior to the arrival of the desirable data (word A) responsive to the duration of time that the receiver (104) has been turned off. The present invention advantageously minimizes the turn on time for the receiver (104) operating in a discontinuous receive mode to save current drain.
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Citations
4 Claims
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1. In a communication unit including a receiver that receives a signal including at least a first word block and a second word block, wherein each word block has a predetermined time duration, wherein each word block has desirable data words repeated therein, and wherein the receiver has a discontinuous receive mode of operation wherein the receiver is selectively turned on and off, a method for minimizing a turn on time for the receiver operating in the discontinuous receive mode, the method comprising the steps of:
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turning on the receiver at a predetermined time prior to the arrival of each occurrence of the desirable data word; verifying the integrity of the desirable data word responsive to receiving a number of occurrences of the desirable data word; turning off the receiver for any remaining occurrences of the desirable data word within the predetermined time period responsive to the step of verifying the integrity of the desirable data word; determining a variable time period that the receiver will be turned off responsive to the number of occurrences of the desirable data word used in the step of verifying and the predetermined time period; and turning on the receiver at a time prior to the arrival of the second word block responsive to the variable time period. - View Dependent Claims (2)
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3. In a communication unit including a receiver that receives a signal including at least a first word block and a second word block, wherein each word block has a predetermined time duration, wherein each word block has desirable data words repeated therein, and wherein the receiver has a discontinuous receive mode of operation wherein the receiver is selectively turned on and off, an apparatus for minimizing a turn on time for the receiver operating in the discontinuous receive mode, the apparatus comprising:
a controller for; turning on the receiver at a predetermined time prior to the arrival of each occurrence of the desirable data word; verifying the integrity of the desirable data word responsive to receiving a number of occurrences of the desirable data word; turning off the receiver for any remaining occurrences of the desirable data word within the predetermined time period responsive to the step of verifying the integrity of the desirable data word; determining a variable time period that the receiver will be turned off responsive to the number of occurrences of the desirable data word used in the step of verifying and the predetermined time period; and turning on the receiver at a time prior to the arrival of the second word block responsive to the variable time period. - View Dependent Claims (4)
Specification