Method of and apparatus for communicating information signals

• US 6,002,937 A
• Filed: 10/31/1996
• Issued: 12/14/1999
• Est. Priority Date: 10/31/1996
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Young, Jason Terrill, Smith, Sybren Daniel, Camden, Richard Snead
• Primary Examiner(s): Dolinar, Andrew M.
• Application Number:
  US08/740,632
• Time in Patent Office: 1,139 Days
• Field of Search: 455/74.1, 455/462, 455/464, 455/39, 455/91, 455/130, 379/55.1, 379/56.1, 379/56.3
• US Class Current: 455/462
• CPC Class Codes: H04M 1/725 Cordless telephones user interfaces specially adapted therefor H04M1/724

Abstract

A mobile station (101) and a base station (103) coupled to a land line network (200) communicate over a radio frequency (RF) communication link (202). The mobile station (101) includes a jack (104) for optionally attaching a cord (172) between the mobile station (101) and the base station (103) for establishing a wireline communication link therebetween. When the wireline communication link is established, the RF communication link (202) is terminated. During a telephone call when the RF communication link (202) is established, the cord (172) may be attached to establish the wireline communication link without interrupting the telephone call.

Claims

1. A method of communicating information signals in an electronic device, the electronic device including a power source, electrical circuitry, a speaker, a microphone, and a wireline interface having electrical contacts, the method comprising the steps of:

generating information signals;

generating radio frequency (RF) signals;

modulating the RF signals with the information signals, thereby generating modulated RF signals;

transmitting the modulated RF signals;

providing the information signals at the electrical contacts of the wireline interface;

detecting a connection signal, the connection signal indicating that an electrical connection exists between the electronic device and an associated electronic device for communicating the information signals;

terminating transmission of the modulated RF signals in response to the connection signal; and

decoupling the speaker and the microphone from the power source in response to the connection signal.

2. The method according to claim 1 further comprising the step of powering down at least a portion of the electrical circuitry in response to the connection signal.

3. The method according to claim 2 further comprising the steps of:

detecting a disconnection signal;

recoupling the speaker and microphone to the power source; and

reestablishing the transmission of the modulated RF signals in response to the disconnection signal.

4. The method according to claim 3 further comprising the steps of:

repowering the at least a portion of the electrical circuitry in response to the disconnection signal.

5. The method according to claim 1 further comprising the steps of:

detecting a disconnection signal;

recoupling the speaker and microphone to the power source; and

reestablishing the transmission of the modulated RF signals in response to the disconnection signal.

6. The method according to claim 1 further comprising the step of maintaining the communication of information signals with the associated electronic device via the electrical connection during the step of terminating.

7. An electronic device, comprising:

an information generating circuit to generate information signals;

a transmitter coupled to said information generating circuit, said transmitter to wirelessly transmit electrical signals having the information signals modulated thereon;

a wireline interface including electrical contacts coupled to said information generating circuit, said wireline interface to provide the information signals at said electrical contacts;

switching circuitry coupled to at least one of the electrical contacts of said wireline interface, said switching circuitry to detect a connection signal at the electrical contacts and, in response thereto, terminate transmission of the electrical signals having the information signals modulated thereon; and

a power source to power electrical circuitry of the device, wherein said switching circuitry decouples a speaker and a microphone from said power source in response to the connection signal.

8. The electronic device in accordance with claim 7 wherein said switching circuitry powers down said transmitter in response to the connection signal.

9. The electronic device in accordance with claim 7 wherein said switching circuitry decouples, in response to the connection signal, the information signals of said information generating circuit from said transmitter.

10. The electronic device in accordance with claim 7 wherein said information generating circuit comprises a microphone.

11. The electronic device in accordance with claim 7 further including:

a housing;

a cord including the electrical contacts; and

a retracting mechanism disposed within said housing, said retracting mechanism having the cord attached thereto for controlling insertion and removal of the cord to and from said housing.

12. An electronic device, comprising:

an information processing circuit to process information signals;

a receiver coupled to said information processing circuit, said receiver to wirelessly receive and demodulate electrical signals having the information signals modulated thereon;

a wireline interface including electrical contacts coupled to said information processing circuit, said wireline interface to optionally receive the information signals at the electrical contacts through an electrical connection with an associated electronic device;

switching circuitry coupled to at least one of the electrical contacts of said wireline interface, said switching circuitry to detect a connection signal at the electrical contacts and, in response thereto, terminate wireless reception of the electrical signals having the information signals modulated thereon; and

a power source to power electrical circuitry of the device, wherein said switching circuitry decouples the information processing circuit from said power source in response to the connection signal.

13. The electronic device in accordance with claim 12 wherein said switching circuitry powers down said receiver in response to the connection signal.

14. A portable electronic device, comprising:

an information generating circuit to generate first information signals;

a transmitter coupled to said information generating circuit, said transmitter to wirelessly transmit first electrical signals having the first information signals modulated thereon;

a receiver to wirelessly receive and demodulate second electrical signals having second information signals modulated thereon;

an information processing circuit coupled to said receiver, said information processing circuit to receive and process the second information signals;

a wireline interface including electrical contacts coupled to said information generating circuit and said information processing circuit, said wireline interface to provide the first information signals and to accept the second information signals at the electrical contacts;

switching circuitry coupled to at least one of the electrical contacts of said wireline interface, said switching circuitry to detect a connection signal at the electrical contacts and, in response thereto, terminate transmission of the first electrical signals having the first information signals modulated thereon and to terminate reception of the second electrical signals having the second information signals modulated thereon and

a power source to power electrical circuit of the device, wherein said switching circuitry decouples the information generating circuit and the information processing circuit from said power source in response to the connection signal.

15. The portable electronic device according to claim 14 wherein said information generating circuit comprises a microphone and said information processing circuit comprises a speaker.

16. A method of providing communications in a base station, the method comprising the steps of:

assigning a wireless channel to a mobile station for communications;

detecting that a wireline connection exists between the mobile station and the base station, wherein the wireline connection electrically couples telephone interface circuitry in the base station with a speaker and a microphone in the mobile station;

terminating assignment of the wireless channel to the mobile station in response to the step of detecting; and

decoupling the speaker and the microphone from a power source in the mobile station in response to the step of detecting.

17. The method according to claim 16 further comprising the step of maintaining the communication of information signals with the mobile station via the wireline connection during the step of terminating.

18. A telephone communication system, comprising:

a base station including;

telephone interface circuitry, said telephone interface circuitry for electrically coupling to a land line network, said telephone interface circuitry capable of generating first information signals from incoming land line signals and capable of generating outgoing land line signals from second information signals;

a base station transceiver, said base station transceiver to send the first information signals and to receive the second information signals over a radio frequency (RF) communication link;

a mobile station including;

battery-operated circuitry including;

a mobile station transceiver, said mobile station transceiver to send the second information signals and to receive the first information signals over the RF communication link;

a speaker to produce audible signals in response to the first information signals;

a microphone to generate the second information signals from an audio source;

a wireline interface, said wireline interface including electrical contacts coupled to said speaker and said microphone, said wireline interface constructed to receive a plug of a cord for establishing a wireline communication link between said mobile station and said base station where said speaker and said microphone are electrically coupled to said telephone interface circuitry;

switching circuitry coupled to at least one of the electrical contacts of said wireline interface and coupled to said batty-operated circuitry and

a battery power source to power the battery-operated circuitry, wherein said switching circuitry powers down at least a portion of said battery-operated circuitry and decouples said speaker and said microphone from said battery power source when the wireline communication link is established.

19. The telephone communication system of claim 18 wherein said switching circuitry powers down at least a portion of said battery-operated circuitry that includes said mobile station transceiver.

20. The telephone communication system of claim 18 wherein said base station further includes:

a detector to detect when the wireline communication link is established and to signal said base station transceiver to power down in response thereto.

21. The telephone communication system of claim 18 wherein said base station further comprises:

a housing; and

a retracting mechanism disposed within said housing, said retracting mechanism having the cord attached thereto for controlling insertion and removal of the cord to and from said housing.

22. The telephone communication system of claim 18 further comprising at least one processor for maintaining the communication of information signals during transitions between wireless and wireline communication links.