Telephone with novel FSK decoding means, simultaneous off-hook caller ID reception means, and set of configurable function key means

• US 6,226,369 B1
• Filed: 02/23/2000
• Issued: 05/01/2001
• Est. Priority Date: 07/10/1997
• Status: Expired due to Fees

• Current Assignee: Cybiotronics Limited
• Original Assignee: Cybiotronics Limited
• Inventors: Sun, Zhi-Cheng, Lim, Boon-Chen, Chan, Tin-Po, Lim, Yeung-How, Wong, Man-Chit
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): TRAN, QUOC DUC
• Application Number:
  US09/511,599
• Time in Patent Office: 433 Days
• Field of Search: 379/142, 379/165, 379/171, 379/93.35, 379/93.17, 379/201, 379/207, 379/215, 379/245, 379/247, 379/373
• US Class Current: 379/142.04
• CPC Class Codes: H04L 27/1563 using transition or level detection
• CPC Class Codes: H04M 1/573 Line monitoring circuits for detecting caller identification

Abstract

A telephone device 100, integrated with a telephone or as a telephone add-on device, improves receipt and processing of network information such as Caller ID from conventional telephone networks. A comparator 103 decodes incoming Frequency Shifted Keying (FSK) signals by transforming transform the FSK signal into a square wave signal with corresponding periodic pulse widths. The transformed signal is sent to a microcontroller 105. The microcontroller is preprogrammed to further decode the transformed signal to obtain digital data representative of Caller ID information. Multiple devices connected to the same telephone line 410 may receive off-hook Caller ID simultaneously by selective disablement of an acknowledgment tone transmission through use of a switch 440. Configurable function keys 471 on a user interface 430 controls other network services, such as voice mail, regardless of different command code formats utilized by various network service providers. By grouping and selecting network service command codes, a user can automatically configure a telephone device to interact with the selected network service provider.

Claims

1. A telephone device comprising:

a line interface unit, coupled to a telephone line, for receiving Caller ID information, and for transmitting on the telephone line an acknowledgment tone used during a handshaking phase of transmission of off-hook Caller ID;

a tone generator, coupled to the line interface unit, for generating the acknowledgment tone;

a controller, coupled to the line interface unit and the tone generator, for processing the received Caller ID information, and for directing the generation and sending of the acknowledgment tone by the tone generator and the line interface unit, respectively;

a display, coupled to the controller, for displaying the received Caller ID information; and

a switch, coupled to the tone generator and the controller, configured to conditionally enable generation of the acknowledgment tone by the tone generator pursuant to a request from the controller, wherein said switch is capable of independently disabling generation of the acknowledgment tone by the tone generator without regard to the request from the controller.

2. The telephone device of claim 1, wherein the tone generator further comprises a plurality of input controls, and the generation of the acknowledgment tone is blocked by blocking the connection from one or more of the input controls to the controller.

3. The telephone device of claim 2, wherein the switch may be switched to one of two positions, a first position being a server position which enables the connection between the input controls of the tone generator and the controller, so that the controller requests generation of the acknowledgment tone, the second position being a client position which blocks the connection between the input controls of the tone generator and the controller so that an acknowledgment tone generation request cannot reach the tone generator.

4. The telephone device of claim 3, wherein when multiple telephone devices are connected to the same telephone line, only one unit with its switch set to the server position will send the acknowledgment tone, and all other units with their switches set to the client position will not send an acknowledgment tone, during reception of off-hook Caller ID.

5. The telephone device of claim 1, wherein the line interface unit and the controller receive off-hook Caller ID regardless of the setting of the position of the switch.

6. The telephone device of claim 1, wherein the switch, when set to disconnect the tone generator from the controller, prevents the generation of the acknowledgment tone even if the controller requests the generation of the acknowledgment tone.

7. The telephone device of claim 1, wherein the acknowledgment tone is a DTMF tone.

8. The telephone device of claim 1, wherein said telephone device is integrated with a conventional telephone.

9. In a telephone device having a line-in circuit unit for receiving an FSK signal;

a tone generator for generating an acknowledgment tone used in a handshaking phase of off-hook Caller ID transmission;

a controller for processing Caller ID information and directing the sending of acknowledgment tone;

a switch for determining whether the generation of acknowledgment tone is enabled or disabled, which overrides the request by the controller; and

a display for displaying the received Caller ID, a method for allowing multiple telephone devices connected to the same telephone line to receive off-hook caller ID simultaneously, the method comprising the steps of;

(a) initializing one and only one of a plurality of devices as a server by setting the switch of that device to a “

server”

position so that generation of the acknowledgment tone is enabled for only that device;

(b) initializing all other devices as clients by setting the switches of these devices to a “

client”

position so that generation of the acknowledgment tone is disabled for these other devices, wherein the generation of the acknowledgment tone is disabled for these other devices regardless of any request issued by the controller;

(c) sending, when an off-hook Caller ID arrives, an acknowledgment tone during the handshaking sequence only by the “

server”

device and not by all other devices; and

(d) receiving, by all devices, the FSK signal used for off-hook Caller ID, after the handshaking phase and regardless of the setting of the switch on each device.

10. The method of claim 9 wherein, when the switch is set to a position which enables the generation of the acknowledgment tone, the control pathway between the tone generator and the controller is connected so that request of acknowledgment tone generation from the controller is processed by the tone generator.

11. The method of claim 9, wherein, when the switch is set to a position which disables the generation of the acknowledgment tone, the control pathway between the tone generator and the controller is disconnected, so that no acknowledgment tone is generated because the tone generation request from the controller is blocked from reaching the tone generator.

12. The method of claim 9, wherein the acknowledgment tone is a DTMF tone.