# US 6,724,745 B1 · Processing reduction in CDMA telephones

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- Number: US 6,724,745 B1
- Document ID: US6724745B1
- Status: Granted
- Kind: B1
- Application number: 09/591,182
- Filed: 2000-06-08
- Granted: 2004-04-20
- Earliest claimed: 2000-06-08
- Assignees: Denso Corporation
- Inventors: Jason F. Hunzinger
- Web page: https://patentgrep.com/patent/US6724745B1

## CPC

- H04B 1/707: using direct sequence modulation
- H04B 2201/70707: Efficiency-related aspects
- H04B: TRANSMISSION

## Abstract

A system of adjusting times between predetermined searches. The searching in a CDMA telephone is adjusted according to the load on the CDMA telephone processor. When the load is low, the searches can be carried out more frequently. When the load is increased, the searches are carried out less frequently. The system determines the load on the processor in either increments or decrements the time between searches as appropriate. In this way, the load on the CDMA telephone processor can be reduced.

## Claims

### Claim 1

A method of operating a CDMA telephone, comprising:
determining a time interval in which to carry out a search of CDMA base stations from the CDMA telephone;
determining a load on a processor of the CDMA telephone; and
adjusting said time interval based on said load on the processor.

### Claim 2 (depends on 1)

A method as in claim 1 wherein said adjusting comprises increasing the time between searches when the processor is heavily loaded.

### Claim 3 (depends on 1)

A method as in claim 1 wherein the adjusting comprises decreasing the time between searches when the processor is lightly loaded.

### Claim 4 (depends on 2)

A method as in claim 2 wherein the adjusting comprises decreasing the time between searches when the processor is lightly loaded.

### Claim 5 (depends on 4)

A method as in claim 4 further comprising carrying out said searches at times defined by said interval.

### Claim 6

A cellular telephone apparatus, comprising:
a cellular transceiver, which can be operated to conduct a search to a remote base station; and
a controller, which is actuated at predetermined intervals to initiate said search, said controller also determining a load on the controller, and adjusting said intervals based on the load on said controller.

### Claim 7 (depends on 6)

A device as in claim 6 wherein said controller includes a processor.

### Claim 8 (depends on 6)

A device as in claim 6 wherein said controller determines a load over a predetermined level, and increases a time between searches based on said load over said predetermined level.

### Claim 9 (depends on 6)

A device as claim 6 wherein said controller determines a load below a predetermined level and decreases a time between searches based on said load.