# US 5,710,757 A · Electronic device for processing multiple rate wireless information

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- Number: US 5,710,757 A
- Document ID: US5710757A
- Status: Granted
- Kind: A
- Application number: 08/411,365
- Filed: 1995-03-27
- Granted: 1998-01-20
- Earliest claimed: 1995-03-27
- Assignees: Hewlett-Packard Company
- Inventors: Gregory J. May
- Web page: https://patentgrep.com/patent/US5710757A

## CPC

- H04W 8/245: {from a network towards a terminal}
- H04L 25/0262: {Arrangements for detecting the data rate of an incoming signal}
- H04L 7/04: Speed or phase control by synchronisation signals {(H04L7/0075 takes precedence)}
- H04L 7/10: Arrangements for initial synchronisation
- H04W 88/022: {Selective call receivers}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

An electronic device is disclosed which processes wireless information having address data and message data. The electronic device, such as a computer equipped with a receiver card or other device capable of receiving wireless information, receives the wireless information. The electronic device sets a decoding rate to be an address rate, then reads the address data at the address rate. The device then determines that the address data matches an address of the electronic device. The device then adjusts the decoding rate to be a message rate different than the address rate, where the message rate corresponds to the address. This technique allows the information service provider to transmit, and the electronic device to process, different types of messages at different rates. This would allow, for example, long complex messages, such as news broadcasts, to be sent at a slower rate than shorter, less complex messages, such as personal pages and stock quotes, thereby decreasing the transmission errors of the long complex messages to a number capable of being corrected in a manner transparent to the user.

## Claims

### Claim 1

A method in an electronic device for processing wireless information having first address data and first message data, said method comprising the steps of:
receiving said wireless information;
setting a decoding rate to be an address rate;
reading said first address data at said address rate;
determining that said first address data matches a first address of said electronic device, said first address associated with lengthy information broadcast to a wide variety of users;
adjusting said decoding rate to a first message rate corresponding to said first address, said first message rate being slower than said address rate; and
reading said first message data at said first message rate.

### Claim 2 (depends on 1)

The method of claim 1, wherein said wireless information further comprises second address data and second message data, said method further comprising the steps of:
adjusting said decoding rate to said address rate from said first message rate;
reading said second address data at said address rate;
determining that said second address data matches a second address of said electronic device;
adjusting said decoding rate to a second message rate corresponding to said second message, said second message rate different than said first message rate and said address rate; and
reading said second message data at said second message rate.

### Claim 3 (depends on 1)

The method of claim 1, wherein said wireless information is formatted into a first plurality of frames, and wherein said first address data and said first message data are contained in a first frame of said first plurality of frames, said method further comprising the steps of:
reading a second frame in said first plurality of frames;
determining said second frame contains continued first message data; and
reading said second frame at said first message rate.

### Claim 4 (depends on 1)

The method of claim 1, wherein said information is formatted into a first plurality of frames, and wherein said first address data and said first message data are contained in a first frame of said first plurality of frames, said method further comprising the steps of:
reading a second frame in said first plurality of frames;
determining said second frame contains second address data;
reading said second address data at said address rate;
determining that said second address data matches a second address of said electronic device; and
reading said second message data at a second message rate different than said first message rate, said second message rate corresponding to said second address.

### Claim 5 (depends on 1)

The method of claim 1, wherein said information is formatted into a first plurality of frames, and wherein said first address data and said first message data are contained in a first frame of said first plurality of frames, said method further comprising the steps of:
reading a second frame in said first plurality of frames;
determining said second frame contains second address data;
reading said second address data at said address rate;
determining that said second address data does not match an address of said electronic device;
ignoring said second message data in said second frame;
waiting a predetermined time for a third frame in said plurality of frames;
determining that said third frame contains third address data;
reading said third address data at said address rate;
determining that said third address data matches a third address of said electronic device; and
reading said third message data at a third message rate, said third message rate corresponding to said third address.

### Claim 6 (depends on 5)

The method of claim 5, wherein said waiting step further comprises the step of:
placing said electronic device in a sleep mode by reducing power to portions of said electronic device.

### Claim 7 (depends on 1)

The method of claim 1, wherein said information is formatted into a plurality of batches, each of said plurality of batches further comprising a plurality of frames, wherein a first batch contains a first plurality of frames, and wherein said first address data and said first message data are contained in a first frame of said first plurality of frames, said method further comprising the steps of:
reading a second frame in said first plurality of frames;
determining said second frame in said first plurality of frames contains continued first message data;
reading said second frame of said first plurality of frames at said first message rate;
detecting the end of said first batch;
detecting the beginning of a second batch having a second plurality of frames;
reading a first frame in said second plurality of frames;
determining said first frame in said second plurality of frames contains continued first message data; and
reading said first frame of said second plurality of frames at said first message rate.

### Claim 8 (depends on 7)

The method of claim 7, wherein each of said plurality of batches further comprises a synchronization codeword, said method further comprising the step of:
reading said synchronization codeword at said address rate.

### Claim 9

An electronic device comprising memory and a receiver for receiving wireless information having first address data and first message data, said electronic device further comprising:
a rate adjuster for setting a decoding rate to be an address rate;
a decoder connected to said receiver and to said rate adjuster for reading said first address data at said address rate;
a match detector connected to said decoder and to said memory for determining that said first address data matches a first address of said electronic device, said first address associated with lengthy information broadcast to a wide variety of users;
said rate adjuster adjusting said decoding rate to a first message rate corresponding to said first address, said first message rate being slower than said address rate; and
said decoder reading said first message data at said first message rate.

### Claim 10 (depends on 9)

The electronic device of claim 9, wherein said wireless information further comprises second address data and second message data, wherein:
said decoder reads said second address data at said address rate;
said match detector determines that said second address data matches a second address of said electronic device;
said rate adjuster adjusts said decoding rate to a second message rate corresponding to said second address, said second message rate being different than said first message rate and said address rate; and
said decoder reads said second message data at said second message rate.

### Claim 11 (depends on 9)

The electronic device of claim 9, wherein said electronic device is a stand-alone pager.

### Claim 12 (depends on 9)

The electronic device of claim 9, wherein said electronic device is a watch receiver.

### Claim 13 (depends on 9)

The electronic device of claim 9, wherein said electronic device is a computer and a wireless receiver card.

### Claim 14

A method in an electronic device for processing wireless information having first address data and first message data, wherein said information is formatted into a plurality of batches, each of said plurality of batches further comprising a plurality of frames, wherein a first batch contains a first plurality of frames, and wherein said first address data and said first message data are contained in a first frame of said first plurality of frames, said method comprising the steps of:
receiving said wireless information;
setting a decoding rate to be an address rate;
reading said first address data at said address rate;
determining that said first address data matches a first address of said electronic device;
adjusting said decoding rate to a first message rate corresponding to said first address, said first message rate being different than said address rate;
reading said first message data at said first message rate;
reading a second frame in said plurality of frames;
determining said second frame contains second address data;
reading said second address data at said address rate;
determining that said second address data does not match an address of said electronic device;
ignoring said second message data in said second frame;
waiting a predetermined time for a third frame in said first plurality of frames;
determining that said third frame contains third address data;
reading said third address data at said address rate;
determining that said third address data matches a third address of said electronic device;
reading said third message data at a third message rate, said third message rate corresponding to said third address;
detecting the end of said first batch;
detecting the beginning of a second batch having a second plurality of frames;
reading a first frame in said second plurality of frames;
determining said first frame in said second plurality of frames contains continued third message data; and
reading said first frame of said second plurality of frames at said third message rate.
