ALTERNATE RADIO CHANNEL SELECTION ADAPTED PER USER PATTERNS

• US 20080311940A1
• Filed: 06/12/2007
• Published: 12/18/2008
• Est. Priority Date: 06/12/2007
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Uppala, Srikanth
• Granted Patent: US 7,756,464 B2
• Time in Patent Office: Days
• US Class Current: 455/509
• CPC Class Codes: H03J 1/0075 where the receiving frequencies of the stations are stored in a permanent memory, e.g. ROM
• CPC Class Codes: H04H 20/22 Arrangements for broadcast of identical information via plural broadcast systems
• CPC Class Codes: H04H 20/26 Arrangements for switching distribution systems

Abstract

Methods, systems, and apparatuses for selecting alternate channels for broadcast radio channels, and for tracking alternate channel selections, are provided. Some radio systems provide alternate frequencies for tuned radio frequencies to use when the tuned radio frequency signal is no longer receivable. In aspects of the present invention, historical information is generated from alternate channel switching attempts. In further aspects, the generated historical information is used to aid in making a subsequent switch to an alternate channel.

Claims

1. A method for radio signal reception in a receiver, comprising:

configuring the receiver to receive a first modulated radio frequency (RF) signal representing a first channel having a first carrier frequency and a first coverage area;

positioning the receiver in the first coverage area;

receiving the first modulated RF signal and a list of alternate channels for the first channel;

moving the receiver from the first coverage area; and

selecting a second channel from the received list of alternate channels based on historical information regarding prior alternate channel selections.

2. The method of claim 1, further comprising:

configuring the receiver to receive a second modulated RF signal representing the selected second channel having a second coverage area.

3. The method of claim 2, further comprising:

receiving the second modulated RF signal and a second list of alternate channels for the second channel.

4. The method of claim 3, further comprising:

receiving a program identification associated with the second channel;

determining whether the program identification of the second channel matches a program identification of the first channel;

if the program identification of the second channel does not match the program identification of the first channel,

selecting a third channel from the received list of alternate channels based on the historical information, and

configuring the receiver to receive a third modulated RF signal representing the third channel having a third coverage area.

5. The method of claim 1, further comprising:

updating the historical information with information regarding said selecting of the second channel.

6. The method of claim 1, wherein said receiving comprises:

receiving the list of alternate channels in a modulated side band of the first carrier frequency.

7. The method of claim 1, wherein the first and second RF modulated signals are frequency modulated (FM) RF signals, wherein said receiving step comprises:

receiving the first FM RF signal.

8. The method of claim 1, wherein said selecting the second channel comprises:

cross-correlating current information with the historical information to determine the second channel from the received list of alternate channels.

9. The method of claim 8, wherein the current information includes the first carrier frequency and the received list of alternate channels, and wherein the historical information includes a historical list of transmit frequencies, one or more alternate frequencies for each of the transmit frequencies, and a score for each of the one or more alternate frequencies for each of the transmit frequencies, wherein said cross-correlating comprises:

selecting a second carrier frequency from the historical list as an alternate frequency for a transmit frequency matching the first carrier frequency, the selected second carrier frequency being present in both the received list and the historical list, and the score of the selected second carrier frequency being a higher score relative to scores for others of the one or more alternate frequencies for the matching transmit frequency.

10. The method of claim 8, wherein the current information includes the first carrier frequency, the received list of alternate channels, the current time, and/or geographical location, and wherein the historical information includes a historical list of transmit frequencies, one or more alternate frequencies for each of the transmit frequencies, and a time value for each of the one or more alternate frequencies for each of the transmit frequencies, wherein said cross-correlating comprises:

selecting a second carrier frequency from the historical list as an alternate frequency for a transmit frequency matching the first carrier frequency, the selected second carrier frequency being present in both the received list and the historical list, and the time value of the selected second carrier frequency matching the current time more closely than time values for others of the one or more alternate frequencies for the matching transmit frequency.

11. The method of claim 8, wherein the current information includes the first carrier frequency, the received list of alternate channels, and the current time, and wherein the historical information includes a historical list of transmit frequencies, one or more alternate frequencies for each of the transmit frequencies, and a score and a time value for each of the one or more alternate frequencies for each of the transmit frequencies, wherein said cross-correlating comprises:

selecting a plurality of frequencies from the historical list as alternate frequencies for a transmit frequency matching the first carrier frequency, the selected plurality of frequencies being present in both the received list and the historical list and each having a time value substantially matching the current time; and

selecting a second carrier frequency from the plurality of frequencies as having a higher score relative to scores for others of the plurality of frequencies.

12. The method of claim 8, wherein the current information includes the first carrier frequency, the received list of alternate channels, the current time, and a current day of the week, and wherein the historical information includes a historical list of transmit frequencies, one or more alternate frequencies for each of the transmit frequencies, and a time value, a day of week value, and a score for each of the one or more alternate frequencies for each of the transmit frequencies, wherein said cross-correlating comprises:

selecting a plurality of frequencies from the historical list as alternate frequencies for a transmit frequency matching the first carrier frequency, the selected plurality of frequencies being present in both the received list and the historical list and each having a time value substantially matching the current time value and having a day of week value matching the current day of week; and

selecting a second carrier frequency from the plurality of frequencies as having a higher score relative to scores for others of the plurality of frequencies.

13. The method of claim 8, wherein the current information includes the first carrier frequency, the received list of alternate channels, the current time, and a current weekend/weekday, and wherein the historical information includes a historical list of transmit frequencies, one or more alternate frequencies for each of the transmit frequencies, and a time value, a weekend/weekday value, and a score for each of the one or more alternate frequencies for each of the transmit frequencies, wherein said cross-correlating comprises:

selecting a plurality of frequencies from the historical list as alternate frequencies for a transmit frequency matching the first carrier frequency, the selected plurality of frequencies being present in both the received list and the historical list and each having a time value substantially matching the current time value and having a weekend/weekday value matching the current weekend/weekday; and

selecting a second carrier frequency from the plurality of frequencies as having a higher score relative to scores for others of the plurality of frequencies.

14. A method in a receiver for prioritizing radio station frequencies, comprising:

receiving in a first coverage area a first modulated RF signal representing a first channel having a first carrier frequency and a list of alternate channels for the first channel;

moving the receiver to a second coverage area;

attempting to receive a modulated RF signal in the second coverage area using at least one new channel selected from the list of alternate channels; and

generating historical information regarding said attempting to receive a modulated RF signal using at least one new channel in the second coverage area.

15. The method of claim 14, wherein said attempting comprises:

selecting an alternate channel from the list of alternate channels;

determining whether a modulated RF signal is received using the selected alternate channel as a new channel;

selecting a next alternate channel from the list of alternate channels; and

repeating said determining step using the selected next alternate channel as the new channel.

16. The method of claim 15, wherein said generating comprises:

generating a cumulative success rate of receiving a modulated RF signal for each alternate channel in the list of alternate channels used as the new channel.

17. The method of claim 15, wherein said generating comprises:

storing a record for each alternate channel used as a new channel to attempt to receive a modulated RF signal, including storing in each record the first channel, the particular alternate channel, and a score.

18. The method of claim 17, wherein said storing a record further comprises:

storing in each record an indication of at least one of a time, a day of week, or a weekday/weekend indication.

19. The method of claim 14, further comprising:

selecting a second channel from the list of alternate channels;

receiving in the second coverage area a second modulated RF signal representing the second channel and a second list of alternate channels for the second channel;

moving the receiver to a third coverage area;

attempting to receive a modulated RF signal in the third coverage area using at least one new channel selected from the second list of alternate channels; and

generating historical information regarding said attempting to receive a modulated RF signal in the third coverage area.

20. The method of claim 19, further comprising:

moving the receiver to the first coverage area;

receiving in the first coverage area the first modulated RF signal having the first carrier frequency and the first list of alternate channels for the first channel;

moving the receiver to a next coverage area;

attempting to receive a modulated RF signal in the next coverage area using at least one new channel selected from the first list of alternate channels; and

generating historical information regarding said attempting to receive a modulated RF signal in the next coverage area.

21. A radio, comprising:

a receiver configured to receive a modulated radio frequency (RF) signal representing a radio channel having a selected carrier frequency, wherein the receiver is further configured to receive a list of alternate channels transmitted in a side band of the carrier frequency;

a storage that stores historical information regarding prior alternate channel selections; and

a cross-correlator configured to select from the received list of alternate channels a next channel corresponding to a modulated RF signal to be received by the receiver based on the stored historical information.

22. The radio of claim 21, wherein the cross-correlator is configured to select a next channel for the receiver from the received list of alternate channels based on the historical information when a receive signal strength for a currently received modulated RF signal decreases below an acceptable level.

23. The radio of claim 22, wherein a location of the radio is changed to cause the receive signal strength for the currently received modulated RF signal to decrease below the acceptable level.

24. The radio of claim 23, wherein the cross-correlator is configured to cross-correlate current information with the historical information to select a next channel for the receiver from the received list of alternate channels.

25. The radio of claim 24, wherein the current information includes at least one of a current carrier frequency, a current time, a current day of the week, or a current weekend/weekday indication.

26. The radio of claim 24, wherein the historical information includes a list of records, wherein each record includes a tuned frequency, an alternate frequency, and a score.

27. The radio of claim 26, wherein each record further includes at least one of a time value, a day of the week, or a weekend/weekday.

28. A radio, comprising:

a receiver configured to receive a modulated radio frequency (RF) signal representing a radio channel having a carrier frequency, wherein the receiver is further configured to receive a list of alternate channels transmitted in a signal associated with the carrier frequency;

a historical information generator configured to generate historical information regarding attempts by the receiver to receive modulated RF signals corresponding to the alternate channels of the list.

29. The radio of claim 28, wherein the historical information includes a list of records, wherein each record includes a tuned frequency, an alternate frequency, and a score.