Adaptive call screening method

• US 6,418,211 B1
• Filed: 12/28/1998
• Issued: 07/09/2002
• Est. Priority Date: 12/28/1998
• Status: Expired due to Term

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Irvin, David R.
• Primary Examiner(s): Matar, Ahmad F.
• Assistant Examiner(s): BUI, BING Q
• Application Number:
  US09/221,367
• Time in Patent Office: 1,289 Days
• Field of Search: 379/67.1, 379/142.01, 379/142.08, 379/142.17, 379/205.1, 379/202.01, 379/207.13, 379/209.01, 379/214.01, 379/188, 379/199, 379/189, 379/210.01, 379/211.01
• US Class Current: 379/188
• CPC Class Codes: H04M 1/57 Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set at the operator set in a manual exchange H04M5/20
• CPC Class Codes: H04M 1/663 Preventing unauthorised calls to a telephone set
• CPC Class Codes: H04M 1/724 User interfaces specially adapted for cordless or mobile telephones

Abstract

A telephone having call-screening capabilities includes a memory for storing call-screening data. The call-screening data is used by the telephone to screen incoming calls. Incoming calls can be accepted, rejected, or diverted based on the call-screening data stored in memory. The call-screening data is automatically updated when a call is made to a previously screened number provided that certain predetermined conditions are satisfied, so that calls can be received from the previously screened number. Updates may be made, for example, when the call to the previously screened number is unanswered, when it is diverted to a recording device, or when the call is made to a number from which a previously screened call was made. The phone can be programmed so that updates automatically expire after a predetermined time period has elapsed.

Claims

1. A telephone having call-screening capabilities, comprising:

a. a memory for storing call-screening data used by said telephone to screen incoming calls from selected numbers;

b. programmable logic for automatically updating said call-screening data when a call is made to a previously screened number so that calls from said previously screened number will be accepted.

2. The telephone according to claim 1 wherein said call-screening data includes an accepted number list, and wherein said logic is programmed to accept calls from numbers on said accepted number list.

3. The telephone according to claim 2 wherein said logic is programmed to add a previously screened number to said accepted number list when a call is made to said previously screened number.

4. The telephone according to claim 2 wherein said logic is programmed to add a previously screened number to said accepted number list when a call made to said previously screened number is unanswered.

5. The telephone according to claim 2 wherein said logic is programmed to add a previously screened number to said accepted number list when a call made to said previously screened number is diverted at the receiving end to a recording device.

6. The telephone according to claim 2 wherein said call-screening data includes a list of diverted numbers and wherein said logic is programmed to divert calls from said diverted numbers to a recording device.

7. The telephone according claim 1 wherein said call-screening data includes a screened number list for numbers to be screened, and wherein said logic is programmed to screen calls from said screened number list.

8. The telephone according to claim 7 wherein said logic is programmed to remove a previously screened number from said screened number list when a call is placed by the user to said previously screened number.

9. The telephone according to claim 7 wherein said logic is programmed to remove a previously screened number from said screened number list when a call placed by the user to said previously screened number is unanswered.

10. The telephone according to claim 7 wherein said logic is programmed to remove a previously screened number to said screened number list when a call placed by the user to said previously screened number is diverted at the receiving end to a recording device.

11. The telephone according to claim 7 wherein said screened number list includes a rejected number list and a diverted number list.

12. The telephone according to claim 11 wherein said logic is programmed to divert calls from numbers on said diverted number list to a recording device.

13. The telephone according to claim 11 wherein said logic is programmed to reject calls from numbers on said rejected number list.

14. The telephone according claim 1 wherein said logic is programmed to purge updates to said call-screening data when predetermined conditions are met.

15. The telephone according to claim 14 wherein said logic is programmed to purge updates to said call-screening data when a predetermined period of time has elapsed from the time the update was made.

16. A call screening method for a telephone having call-screening capability, comprising:

a. storing call-screening data in a memory;

b. screening incoming calls to said telephone based on said call-screening data so that calls from selected numbers are screened;

c. updating said call-screening data in response to a call being made to a screened number so that calls can be received from said screened number.

17. The call-screening method according to claim 16 wherein said telephone updates said call-screening data by modifying the status of said screened number.

18. The call-screening method according to claim 16 wherein said call-screening data includes one or more screening lists, and wherein said telephone updates said call-screening data by adding, deleting, and modifying entries to said screening lists.

19. The call-screening method according to claim 18 wherein updates to said screening lists are purged after predetermined conditions are satisfied.

20. The call-screening method according to claim 19 wherein updates to said screening lists are purged after a predetermined time period has elapsed from the time of the update.

21. The call-screening method according to claim 16 wherein said call-screening data is updated when a call to a previously screened number is unanswered.

22. The call-screening method according to claim 16 wherein said call-screening data is updated when a call to said previously screened number is answered by a recording device.

23. The call-screening method according to claim 16 wherein said call-screening data is updated when a return call is made to a number from which an earlier call was blocked.