Communication system for telephone

• US 6,807,434 B1
• Filed: 03/09/1999
• Issued: 10/19/2004
• Est. Priority Date: 02/01/1999
• Status: Expired due to Fees

• Current Assignee: Cotron Corporation
• Original Assignee: Cotron Corporation
• Inventors: Yang, Bill
• Primary Examiner(s): Nguyen, Simon
• Application Number:
  US09/264,769
• Time in Patent Office: 2,051 Days
• Field of Search: 455/569.2, 455/95, 455/568, 455/575.9, 455/151.2, 455/99, 455/100, 455/66, 455/41.2, 455/74, 455/11.1, 455/90, 455/569.1, 455/575.2, 379/430, 379/431
• US Class Current: 455/569.1
• CPC Class Codes: H04M 1/6033 for providing handsfree use or a loudspeaker mode in telephone sets arrangements for preventing acoustic echo H04M9/08
• CPC Class Codes: H04M 1/6091 including a wireless interface

Abstract

A communication system for telephone. The system uses infrared or radio wave as a medium for transmitting voice signal from a telephone to a receiver earphone worn by the user, and then uses a microphone to pick up voice messages from the user. Hence, hands-free telephone conversation is possible.

Claims

1. A communication system for a mobile or a cellular telephone to be installed inside a car, comprising:

a microphone connected by a wire to the mobile or cellular telephone for receiving a first voice signal from a user and then transmitting the first voice signal to the mobile or cellular telephone;

a transmitter connected to the mobile or cellular telephone for receiving, a second voice signal from the telephone and then converting the second voice signal into a wireless signal so that the wireless signal is broadcast by the transmitter, wherein the transmitter can be an separated unit or a built-in unit in the mobile or cellular telephone; and

a receiver earphone for picking up the wireless signal from the transmitter and then converting the wireless signal into a third voice signal for hearing by the user, wherein the transmitter and the receiver earphone are coupled in a wireless manner, and the receiver earphone forms a stand-alone unit that is not connected to the microphone.

2. The telephone communication system of claim 1, wherein the microphone is erected near an instrument panel of the car in front of the driver'"'"'s seat.

3. The telephone communication system of claim 1, wherein the transmitter is erected near an instrument panel of the car in front of the driver'"'"'s seat.

4. The telephone communication system of claim 1, wherein the transmitter is powered by a battery.

5. The telephone communication system of claim 1, wherein the transmitter is powered by a battery of the mobile or the cellular telephone.

6. The telephone communication system of claim 1, wherein the transmitter is powered by a car battery.

7. The telephone communication system of claim 6, wherein the transmitter further includes a power cable connecting the transmitter to the cigarette lighter of the car.

8. The telephone communication system of claim 1, wherein the receiver earphone is composed of a receiver and an earphone connected to the receiver.

9. The telephone communication system of claim 8, wherein the receiver further includes an automatic shut-off circuit.

10. The telephone communication system of claim 1, wherein the wireless signal includes infrared wave.

11. The telephone communication system of claim 1, wherein the wireless signal includes radio wave.

12. The telephone communication system of claim 1, wherein the mobile or the cellular telephone further includes an automatic answer circuit.

13. An indoor communication system for telephone to be used together with an indoor wire-connected telephone, comprising:

a microphone connected by a wire to the indoor wire-connected telephone for receiving a first voice signal from a user and then transmitting the first voice signal to the indoor wire-connected telephone;

a transmitter connected to the indoor wire-connected telephone for receiving a second voice signal from the indoor wire-connected telephone and then converting the second voice signal into a wireless signal so that the wireless signal is broadcast by the transmitter, wherein the transmitter can be an separated unit or a built-in unit in the indoor wire-connected telephone; and

a receiver earphone for picking up the wireless signal from the transmitter and then converting the wireless signal into a third voice signal for hearing by the user, wherein the transmitter and the receiver earphone are coupled in a wireless manner, and the receiver earphone forms a stand-alone unit that does not contain a transmitter.

14. The telephone communication system of claim 13, wherein the receiver earphone is composed of a receiver and an earphone connected to the receiver.

15. The telephone communication system of claim 14, wherein the receiver further includes an automatic shut-off circuit.

16. The telephone communication system of claim 13, wherein the microphone is connected to the indoor wire-connected telephone through a connector.

17. The telephone communication system of claim 16, wherein the connector further includes an amplifier for amplifying the first voice signals.

18. The telephone communication system of claim 13, wherein the transmitter is connected to the indoor wire-connected telephone through a connector.

19. The telephone communication system of claim 13, wherein the wireless signal includes infrared wave.

20. The telephone communication system of claim 13, wherein the wireless signal includes radio wave.

21. The telephone communication system of claim 13, wherein the in-door wire-connected telephone further includes an automatic answer circuit.

22. An indoor communication system for telephone to be used together with an indoor wireless telephone, comprising:

a microphone connected by a wire to the indoor wireless telephone for receiving a first voice signal from a user and then transmitting the first voice signal to the indoor wireless telephone;

a transmitter connected to the indoor wireless telephone for receiving a second voice signal from the indoor wireless telephone and then converting the second voice signal into a wireless signal so that the wireless signal is broadcast by the transmitter, wherein the transmitter can be an separated unit or a built-in unit in the indoor wireless telephone; and

a receiver earphone for picking up the wireless signal from the transmitter and then converting the wireless signal into a third voice signal for hearing by the user, wherein the transmitter and the receiver earphone are coupled in a wireless manner, and the receiver earphone forms a stand-alone unit that does not contain a transmitter.

23. The telephone communication system of claim 22, wherein the receiver earphone is comprised of a receiver and an earphone connected to the receiver.

24. The telephone communication system of claim 23, wherein the receiver further includes an automatic shut-off circuit.

25. The telephone communication system of claim 22, wherein the microphone is connected to the indoor wireless telephone through a connector.

26. The telephone communication system of claim 25, wherein the connector further includes an amplifier for amplifying the first voice signal.

27. The telephone communication system of claim 22, wherein the transmitter is connected to the indoor wireless telephone through a connector.

28. The telephone communication system of claim 22, wherein the wireless signal includes infrared wave.

29. The telephone communication system of claim 22, wherein the wireless signal includes radio wave.

30. A communication system, comprising:

a telephone having a built-in transmitter, wherein the built-in transmitter is used for receiving a first voice signal from the telephone and then converting the first voice signal into a wireless signal so that the wireless signal is broadcast by the built-in transmitter;

a microphone connected by a wire to the telephone for receiving a second voice signal from a user and then transmitting the second voice signal to the telephone; and

a receiver earphone for picking up the wireless signal from the built-in transmitter of the telephone and then converting the wireless signal into a third voice signal for hearing by the user, wherein the receiver earphone forms a stand-alone unit that is not connected to the microphone; and

a wire earphone set, which is optionally comprised in the system to connect to the telephone, wherein when the ire earphone is comprised to be connected to the telephone, the built-in transmitter is automatically disabled.

31. The communication system of claim 30, wherein the telephone is selected form the group consisting of the wired telephone, the wireless telephone, the mobile telephone and the cellular telephone.

32. The communication system of claim 30, wherein the receiver earphone is composed of a receiver and an earphone connected to the receiver.

33. The communication system of claim 32, wherein the receiver farther includes an automatic shut-off circuit.

34. The communication system of claim 30, wherein the telephone further includes an automatic answer circuit.

35. The communication system of claim 30, wherein the wireless signal includes infrared wave.

36. The communication system of claim 30, wherein the wireless signal includes radio wave.

37. A communication system for a telephone to be installed inside a car, comprising:

a microphone connected by a wire to the telephone for receiving a first voice signal from a user and then transmitting the first voice signal to the mobile or cellular telephone;

a transmitter connected to the telephone for receiving a second voice signal from the telephone and then converting the second voice signal into a wireless signal so that the wireless signal is broadcast by the transmitter; and

a receiver earphone for picking up the wireless signal from the transmitter and then converting the wireless signal into a third voice signal for hearing by the user, wherein the transmitter and the receiver earphone are coupled in a wireless manner, and the receiver earphone forms a stand-alone unit that is not connected to the microphone.

38. The communication system of claim 37, wherein the telephone comprises a mobile or cellular telephone installed in the car.

39. The communication system of claim 37, wherein the transmitter is built in the telephone.