Cellular telephone and associated method for opening a voice channel with a source telephone without establishing voice communications therewith

• US 5,570,413 A
• Filed: 07/18/1994
• Issued: 10/29/1996
• Est. Priority Date: 07/18/1994
• Status: Expired due to Term

• Current Assignee: Unwired Planet LLC (JP Morgan Chase & Co)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Falk, Johan, Molne, Anders, Ahlberg, Bjorn G. D.
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): OEHLING, GEORGE J
• Application Number:
  US08/276,265
• Time in Patent Office: 834 Days
• Field of Search: 379/142, 379/127, 379/245, 379/246, 379/247, 379/58, 379/59, 379/63
• US Class Current: 455/550.1
• 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 1/72513 On hold, intercom or transfer communication modes
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A cellular telephone includes a speaker, a microphone and voice channel establishing components for opening a voice channel between the cellular telephone and a source telephone requesting communications with the cellular telephone without opening the speaker and microphone. Thus, voice communications between the cellular telephone and the source telephone are prevented until a predetermined signal from the user of the cellular telephone is received. The cellular telephone also include delayed speaker and microphone connecting components for receiving and processing data from the source telephone without opening the speaker and the microphone. The data may include the identity of the source telephone or a message which may be displayed for the user of the cellular telephone. Based upon the identity of the source telephone, the user of the cellular telephone may selectively ignore or respond to the request for communications, or may route the request to an automated answering device or another telephone.

Claims

1. A cellular telephone comprising:

a speaker;

a microphone;

voice channel establishing means for opening a voice channel between the cellular telephone and a source telephone requesting communications with the cellular telephone without opening said speaker and said microphone of the cellular telephone such that voice communications are prevented between the source telephone and the cellular telephone;

data receiving means, responsive to said voice channel establishing means, for receiving modulated data via the open voice channel from the source telephone without opening said speaker and said microphone of the cellular telephone;

demodulating means, responsive to said data receiving means, for processing the received data without opening said speaker and said microphone of the cellular telephone;

user input means for accepting user input of an alternative terminal identifier after receipt of the identity of the source telephone, wherein said alternative terminal identifier identifies an alternative terminal other than the cellular telephone;

voice communications routing means, responsive to said demodulating means and said user input means, for transmitting signals via the open voice channel indicative of the alternative terminal other than the cellular telephone and for transferring the communications request to the alternative terminal other than the cellular telephone such that the user of the cellular telephone is permitted to select the alternative terminal other than the cellular telephone based upon the identity of the source telephone without opening said speaker and said microphone and without establishing voice communications with the source telephone;

data processing means, responsive to said demodulating means, for determining if the source telephone has requested voice communications with the cellular telephone;

alerting means, responsive to said data processing means, for notifying the user of the cellular telephone, without establishing voice communications with the source telephone, that the source telephone has requested voice communications with the cellular telephone; and

timer means, associated with said demodulating means, for determining if the cellular telephone has received data from the source telephone within a predetermined time period after opening of the voice channel and, if no data is received within the predetermined time period, for prompting said altering means such that the user of the cellular telephone is notified that the source telephone has requested voice communications therewith.

2. The cellular telephone according to claim 1 further comprising voice communications establishing means, responsive to said demodulating means, for opening said speaker and said microphone to thereby establish voice communications between the source telephone and the cellular telephone only upon receipt of a predetermined signal by the user of the cellular telephone.

3. The cellular telephone according to claim 1 further comprising display means for displaying information based upon the data processed by said demodulating means wherein the information displayed includes the identity of the source telephone.

4. The cellular telephone according to claim 1 further comprising display means for displaying information based upon the data processed by said demodulating means wherein the information displayed includes a message transmitted by the source telephone.

5. The cellular telephone according to claim 1 further comprising means, responsive to said demodulating means, for closing the voice channel upon the receipt of a predetermined signal from the source telephone.

6. The cellular telephone according to claim 1 wherein the cellular telephone is adapted to communicate with a digital cellular radio network, the cellular telephone further comprising a digital control channel establishing means for opening a digital control channel between the cellular telephone and the source telephone without opening the speaker and the microphone of the cellular telephone.

7. A cellular telephone having a speaker and a microphone, the cellular telephone comprising:

voice channel establishing means for opening a voice channel between the cellular telephone and a source telephone requesting communication with the cellular telephone without opening the speaker and the microphone of the cellular telephone such that voice communications are prevented between the source telephone and the cellular telephone;

data receiving means, responsive to said voice channel establishing means, for receiving modulated data via the open voice channel from the source telephone without opening the speaker and the microphone of the cellular telephone, wherein the modulated data includes the identity of the source telephone;

demodulating means, responsive to said data receiving means, for processing the received data without opening the speaker and the microphone of the cellular telephone;

user input means for accepting user input of an alternative terminal identifier after receipt of the identity of the source telephone, wherein said alternative terminal identifier identifies an alternative terminal other than the cellular telephone;

voice communications routing means, responsive to said demodulating means and said user input means, for transmitting signals via the open voice channel indicative of the alternative terminal other than the cellular telephone and for transferring the communications request to the alternative terminal other than the cellular telephone such that the user of the cellular telephone is permitted to select the alternative terminal other than the cellular telephone based upon the identity of the source telephone without opening the speaker and the microphone and establishing voice communications with the source telephone;

data processing means, responsive to said demodulating means, for determining if the source telephone has requested voice communications with the cellular telephone;

altering means, responsive to said data processing means, for notifying the user of the cellular telephone, without establishing voice communications with the source telephone, that the source telephone has requested voice communications with the cellular telephone; and

timer means, associated with said demodulating means, for determining if the cellular telephone has received data from the source telephone within a predetermined time period after opening of the voice channel and, if no data is received within the predetermined time period, for prompting said alerting means such that the user of the cellular telephone is notified that the source telephone has requested voice communications therewith.

8. The cellular telephone according to claim 7 further comprising voice communications establishing means, responsive to said demodulating means, for opening the speaker and the microphone to thereby establish voice communications between the source telephone and the cellular telephone only upon receipt of a predetermined signal by the user of the cellular telephone.

9. A cellular telephone having a speaker and a microphone, the cellular telephone comprising:

voice channel establishing means for opening a voice channel between the cellular telephone and a source telephone requesting communications with the cellular telephone without opening the speaker and the microphone;

delayed speaker and microphone connecting means, responsive to said voice channel establishing means, for receiving and processing modulated data from the source telephone via the open voice channel, without opening the speaker and the microphone and without establishing voice communications with the source telephone;

user input means for accepting user input of an alternative terminal identifier after receipt of the modulated data, wherein said alternative terminal identifier identifies an alternative terminal other than the cellular telephone;

voice communications routing means, responsive to said delayed speaker and microphone connecting means and said user input means, for transmitting signals via the open voice channel indicative of the alternative terminal other than the cellular telephone and for transferring the communications request to the alternative terminal other than the cellular telephone such that the user of the cellular telephone is permitted to select the alternative terminal other than the cellular telephone based upon the identity of the source telephone without opening the speaker and the microphone and establishing voice communications with the source telephone;

wherein said delayed speaker and microphone connecting means further comprises data processing means for determining if the source telephone has requested voice communications with the cellular telephone;

altering means, responsive to said data processing means, for notifying the user of the cellular telephone, without establishing voice communications with the source telephone, that the source telephone has requested voice communications with the cellular telephone; and

timer means, associated with said demodulating means, for determining if the cellular telephone has received data from the source telephone within a predetermined time period and, if no data is received within the predetermined time period, for prompting said altering means such that the user of the cellular telephone is notified that the source telephone has requested voice communications therewith.

10. The cellular telephone according to claim 9 wherein said delayed speaker and microphone connecting means comprises:

data receiving means for receiving modulated data via the open voice channel from the source telephone without opening the speaker and the microphone of the cellular telephone, wherein the modulated data includes the identity of the source telephone;

demodulating means for processing the received data without opening the speaker and the microphone of the cellular telephone.

11. The cellular telephone according to claim 9 wherein said delayed speaker and microphone connecting means further comprises voice communications establishing means for opening the speaker and the microphone to thereby establish voice communications between the source telephone and the cellular telephone only upon receipt of a predetermined signal by the user of the cellular telephone.

12. A method of transmitting data between a cellular telephone and a source telephone requesting communication with the cellular telephone without establishing voice communications therebetween, the method comprising the steps of:

opening a voice channel between the cellular telephone and the source telephone without opening the speaker and the microphone of the cellular telephone such that voice communications is not established therebetween;

transmitting modulated data from the source telephone to the cellular telephone via the open voice channel without opening the speaker and the microphone of the cellular telephone;

processing the transmitted data without opening the speaker and the microphone of the cellular telephone to determine if the source telephone has requested voice communications with the cellular telephone;

accepting user input of an alternative terminal identifier after receipt of the modulated data, wherein said alternative terminal identifier identifies an alternative terminal other than the cellular telephone;

transmitting signals via the open voice channel, after said processing and accepting steps, wherein the signals are indicative of the alternative terminal other than the cellular telephone;

transferring the communication request to the alternative terminal other than the cellular telephone such that the user of the cellular telephone is permitted to select the alternative terminal other than the cellular telephone based upon the identity of the source telephone without opening said speaker and microphone and establishing voice communications with the source telephone;

wherein said processing step comprises the step of determining if the cellular telephone has received data from the source telephone within a predetermined time period; and

wherein said method further comprises the step of alerting the user of the cellular telephone, if no data is received within the predetermined time period, that the source telephone has requested voice communications therewith without opening the speaker and microphone of the cellular telephone.

13. The method of transmitting data between a cellular telephone and a source telephone according to claim 12 wherein said processing step is followed by the step of opening the speaker and the microphone of the microphone to thereby establish voice communications between the source telephone and the cellular telephone only upon receipt of a predetermined signal by the user of the cellular telephone.

14. The method of transmitting data between a cellular telephone and a source telephone according to claim 12 further comprising the step of alerting a user of the cellular telephone, after said processing step, that the source telephone has requested voice communications therewith without establishing voice communications with the source telephone.

15. The method of transmitting data between a cellular telephone and a source telephone according to claim 12 further comprising the step of displaying the data received by the cellular telephone after the processing step wherein the displayed data includes the identity of the source telephone.

16. The method of transmitting data between a cellular telephone and a source telephone according to claim 12 further comprising the step of displaying the data received by the cellular telephone after the processing step wherein the displayed data includes a message transmitted by the source telephone.