Communication terminal device adapted to physical characteristics of telecommunication network and method for adapting communication terminal device to physical characteristics of telecommunication network

• US 7,634,078 B2
• Filed: 10/18/2004
• Issued: 12/15/2009
• Est. Priority Date: 10/18/2003
• Status: Expired due to Fees

• Current Assignee: HP Printing Korea Co., Ltd. (HP Inc.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Eog-Kyu
• Primary Examiner(s): Gauthier; Gerald
• Application Number:
  US10/965,872
• Publication Number:
  US 20050084080A1
• Time in Patent Office: 1,884 Days
• Field of Search: 379/387, 379/93.09, 379/100.12, 379/387.01, 379/386, 379/413.02, 379/142.08, 379/399.01, 370/277, 370/352, 370/535, 709/229, 380/255, 455/424, 455/556.1, 455/570
• US Class Current: 379/387.01
• CPC Class Codes: H04N 1/32704 Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line
• CPC Class Codes: H04N 1/32708 Telephone
• CPC Class Codes: H04N 1/32728 an off-hook condition
• CPC Class Codes: H04N 1/33323 transmission mode only, e.g. speed
• CPC Class Codes: H04N 1/33361 according to characteristics or the state of the communication line H04N1/33353 and H04N2201/33371 take precedence

Abstract

The communication terminal device includes a handset, a central controller, a telephone network adaptor unit for converting analog signals transmitted/received between telecommunication network and the communication terminal device into digital signals, an interface unit physically isolating the central controller from the telephone network adaptor unit, and transmitting/receiving the converted digital signals between the central controller and the telephone network adaptor unit, and a telephone circuit unit which transmits the voice signals generated by processing the digital signals received from the telephone network adaptor unit to a handset through the interface unit and transmits the digital signals generated by processing the voice signals received from the handset to the telephone network adaptor unit through the interface unit. The telephone network adaptor unit is controlled by the central controller and changes the physical characteristics of the analog signals to be adapted to the physical characteristics of the telecommunication network.

Claims

1. A communication terminal device including a handset for inputting and outputting voice signals and processing signals according to a physical characteristics specification of a designated telecommunication network corresponding to one or more countries, the device comprising:

a controller;

a telephone network adaptor unit for converting analog communication signals transmitted and received between a telecommunication network and the communication terminal device into digital communication signals;

an interface unit for physically isolating the controller from the telephone network adaptor unit, and transmitting and receiving the converted digital communication signals between the controller and the telephone network adaptor unit;

a telephone circuit unit, which transmits the voice signals generated by processing the digital communication signals received from the telephone network adaptor unit to a handset through the interface unit, and, which transmits the digital communication signals generated by processing the voice signals received from the handset to the telephone network adaptor unit through the interface unit;

a facsimile unit for processing facsimile signals from the digital communication signals received from the telephone network adaptor unit through the interface unit; and

a memory unit for storing information related to the physical characteristics specification of one or more telecommunication networks,

wherein the controller determines whether the handset is off-hooked or not, so that the digital communication signals are delivered to the telephone circuit unit when the handset is determined to be off-hooked, and the digital communication signals are delivered to the facsimile unit when the handset is determined not to be off-hooked,

wherein the controller reads the physical characteristics specification of the designated telecommunication network and controls the telephone network adaptor unit according to the read physical characteristics specification to change at least one physical characteristic of the analog communication signals so as to be adapted to the physical characteristics specification of the designated telecommunication network, and further controls the telephone circuit unit according to the read physical characteristics specification to change at least one physical characteristic of voice signals so as to be adapted to the physical characteristics specification of the designated telecommunication network.

2. The communication terminal device of claim 1, wherein the telephone network adaptor unit further comprises:

a ring detector for detecting ring signals received from the telecommunication network;

a DC current adjustor generating a direct current for maintaining a connection to the telecommunication network when the ring signals are detected by the ring detector;

an AC signal processor for processing analog signals transmitted and received between the telecommunication network and the communication terminal device;

a signal characteristic adjustor, controlled by the controller, for changing physical characteristics of analog communication signals so as to be adapted to the physical characteristics specification of the designated telecommunication network; and

a signal converted for converting analog communication signals into digital communication signals.

3. The communication terminal device of claim 2, wherein the signal characteristic adjustor comprises an amplifier for amplifying analog communication signals, wherein the amplifier is controlled by the controller to change the gain of the amplifier.

4. The communication terminal device of claim 1, the telephone circuit unit further comprises:

a signal converting unit for converting digital communication signals received from the interface unit into analog communication signals; and

a voice signal processor for processing analog communication signals transmitted and received between the handset and the signal converter, wherein the voice signal processor, controlled by the controller, changes at least one physical characteristic of the analog communication signals so as to be adapted to the physical characteristics specification of the designated telecommunication network.

5. The communication terminal device of the claim 4, wherein the telephone circuit unit further comprises:

an amplifier for amplifying the analog communication signals; and

a digital filter for passing only a predetermined frequency band from the analog communication signals, wherein the amplifier is controlled by the controller to change the gain of the amplifier, wherein the digital filter is controlled by the controller to change the frequency band.

6. The communication terminal device of the claim 1, wherein the interface unit uses a transformer to transmit and receive the digital communication signals between the controller and the telephone network adaptor unit.

7. The communication terminal device of the claim 1, wherein the interface unit uses a high voltage capacitor to transmit and receive the digital communication signals between the central controller and the telecommunication network adaptor unit.

8. The communication terminal device of claim 1, wherein the at least one physical characteristic of voice signals changed by the telephone circuit unit corresponds to at least one of magnitude characteristics of voices signals and frequency characteristics of voice signals transmitted from the handset to the telecommunication network.

9. The communication terminal device of claim 1, wherein the at least one physical characteristic of voice signals changed by the telephone circuit unit corresponds to at least one of magnitude characteristics of voices signals, frequency characteristics of voice signals and magnitude of side-tone signals transmitted from the telecommunication network to the handset.

10. A method for processing signals, by a communication terminal device including a handset for inputting and outputting voice signals, according to a physical characteristics specification of a designated telecommunication network corresponding to one or more countries and, the method comprising:

(a) converting, via a telephone network adaptor unit, analog communication signals into digital communication signals to be transmitted and received between a telecommunication network and the communication terminal device;

(b) physically isolating the telecommunication network from a telephone circuit unit using an interface unit;

(c) transmitting, via the telephone circuit unit, to the handset, voice signals generated by processing the digital communication signals received from the interface unit, and transmitting to the interface unit the digital communication signals generated by processing voice signals received from the handset;

(d) changing, via the telephone network adaptor unit, at least one physical characteristic of the analog communication signals so as to be adapted to the physical characteristics specification of the designated telecommunication network;

(d1) changing, via the telephone circuit unit, at least one physical characteristic of voice signals so as to be adapted to the physical characteristics specification of the designated telecommunication network,

(e) determining whether the handset is off-hooked;

(f) processing the digital communication signals as facsimile signals when determined the handset is not off-hooked; and

(g) storing information relating to the physical characteristics specification of two or more telecommunication networks in a memory, wherein changing step (d) reads from the memory the information relating to the physical characteristics specification of the designated telecommunication network and changes at least one physical characteristic of the analog communication signals according to the read physical characteristics information, wherein changing step (d1) reads from the memory the information relating to the physical characteristics specification of the designated telecommunication network and changes at least one physical characteristic of the voice signals according to the read physical characteristics information.

11. The method of the claim 10, wherein changing step (d) changes the gain of the amplifier to change the amplitude of the analog communication signals so as to be adapted to the physical characteristics specification of the designated telecommunication network.

12. The method of the claim 10, wherein changing step (d) changes a pass frequency band through the digital filter to change a frequency characteristic of the analog communication signals so as to be adapted to the physical characteristics specification of the designated telecommunication network.

13. The method of claim 10, wherein the at least one physical characteristic of voice signals changed by the telephone circuit unit corresponds to at least one of magnitude characteristics of voice signals and frequency characteristics of voice signals transmitted from the handset to the telecommunication network.

14. The method of claim 10, wherein the at least one physical characteristic of voice signals changed by the telephone circuit unit corresponds to at least one of magnitude characteristics of voice signals, frequency characteristics of voice signals and magnitude of side-tone signals transmitted from the telecommunication network to the handset.

15. A communication terminal device including a handset for inputting and outputting voice signals and processing signals according to a physical characteristics specification of a designated telecommunication network corresponding to one or more countries, the device comprising:

a controller;

a telephone network adaptor unit for converting analog communication signals transmitted and received between a telecommunication network and the communication terminal device into digital communication signals;

an interface unit for physically isolating the controller from the telephone network adaptor unit, and transmitting and receiving the converted digital communication signals between the controller and the telephone network adaptor unit;

a telephone circuit unit, which transmits the voice signals generated by processing the digital communication signals received from the telephone network adaptor unit to a handset through the interface unit, and, which transmits the digital communication signals generated by processing the voice signals received from the handset to the telephone network adaptor unit through the interface unit;

an image scanner for generating facsimile signals, wherein the transmitter is configured for transmitting facsimile signals received from said image scanner; and

a memory unit for storing information related to the physical characteristics specification of one or more telecommunication networks,

wherein the controller reads the physical characteristics specification of the designated telecommunication network and controls the telephone network adaptor unit according to the read physical characteristics specification to change at least one physical characteristic of the analog communication signals so as to be adapted to the physical characteristics specification of the designated telecommunication network, and further controls the telephone circuit unit according to the read physical characteristics specification to change at least one physical characteristics of voice signals so as to be adapted to the physical characteristics specification of the designated telecommunication network.

16. The communication terminal device of claim 15, wherein the at least one physical characteristic of voice signals changed by the telephone circuit unit corresponds to at least one of magnitude characteristics of voice signals and frequency characteristics of voice signals transmitted from the handset to the telecommunication network.

17. The communication terminal device of claim 15, wherein the at least one physical characteristic of voice signals changed by the telephone circuit unit corresponds to at least one of magnitude characteristics of voice signals, frequency characteristics of voice signals and magnitude of side-tone signals transmitted from the telecommunication network to the handset.

18. A method for a communication terminal device including a handset for inputting and outputting voice signals and processing signals according to configuration data of a selected Public Switched Telephone Network (“

PSTN”

), the method comprising;

(a) converting, via a telephone network adaptor unit, analog communication signals into digital communication signals to be transmitted and received between a telecommunication network and the communication terminal device;

(b) using an interface to physically isolate the telecommunication network from a telephone circuit unit;

(c) transmitting, via the telephone circuit unit, to a handset the voice signals generated by processing the digital communication signals received from an interface unit, and transmitting to the interface unit the digital communication signals generated by processing the voice signals received from the handset;

(d) storing configuration data for a plurality of PSTNs in a memory;

(e) selecting configuration data, in response to a user operation, for at least one PSTN from the memory;

(f) changing, via the telephone network adaptor unit, at least one physical characteristic of the analog communication signals according to the selected configuration data so as to be adapted for the selected PSTN; and

(g) changing, via the telephone circuit unit, at least one physical characteristic of voice signals according to the selected configuration data so as to be adapted to the selected PSTN.

19. The method of claim 18, wherein the at least one physical characteristic of voice signals changed by the telephone circuit unit corresponds to at least one of magnitude characteristics of voice signals and frequency characteristics of voice signals transmitted from the handset to the telecommunication network.

20. The method of claim 18, wherein the at least one physical characteristic of voice signals changed by the telephone circuit unit corresponds to at least one of magnitude characteristics of voice signals, frequency characteristics of voice signals and magnitude of side-tone signals transmitted from the telecommunication network to the handset.

21. A communication terminal device including a handset for inputting and outputting voice signals and processing signals according to configuration data of a selected Public Switched Telephone Network (“

PSTN”

), the device comprising;

a controller;

a telephone network adaptor unit for converting analog communication signals transmitted and received between a telecommunication network and the communication terminal device into digital communication signals;

an interface unit for physically isolating the controller from the telephone network adaptor unit, and transmitting and receiving the converted digital communication signals between the controller and the telephone network adaptor unit;

a telephone circuit unit, which transmits the voice signals generated by processing the digital communication signals received from the telephone network adaptor unit to a handset through the interface unit, and, which transmits the digital communication signals generated by processing the voice signals received from the handset to the telephone network adaptor unit through the interface unit;

a memory unit for storing configuration data for a plurality of PSTNs; and

a user interface for selecting configuration data, in response to a user operation, for at least one PSTN from the memory,

wherein the controller reads the selected configuration data of the selected PSTN and controls the telephone network adaptor unit according to the read configuration data to change at least one physical characteristic of the analog communication signals so as to be adapted to the selected PSTN, and further controls the telephone circuit unit according to the read configuration data to change at least one physical characteristics of voice signals so as to be adapted to the selected PSTN.