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

• US 20100002855A1
• Filed: 09/09/2009
• Published: 01/07/2010
• Est. Priority Date: 10/18/2003
• Status: Active Grant

• Current Assignee: HP Printing Korea Co., Ltd. (HP Inc.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Eog-Kyu
• Granted Patent: US 8,014,514 B2
• Time in Patent Office: Days
• US Class Current: 379/100.16
• 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 facsimile apparatus connectable to a Public Switched Telephone Network (“

PSTN”

) and capable of processing voice communication signals or facsimile communication signals, wherein the voice communication signals are processed according to information regarding a designated nation, the apparatus comprising;

a first unit including a telephone circuit unit, a memory to store information regarding physical characteristics demanded in PSTN by the designated nation, a controller coupled to the telephone circuit unit and the memory, and a microphone to receive outgoing voice signals,

wherein the controller controls the telephone circuit unit so as to change at least one physical characteristic of the outgoing voice signals, according to the information regarding physical characteristics demanded in PSTN by the designated nation, to generate outgoing digital communication signals; and

a second unit configured to convert outgoing digital communication signals received from the first unit to outgoing analog communication signals, which are output via PSTN.

2. The facsimile apparatus of claim 1, wherein the second unit is further configured to receive incoming analog communication signals via PSTN and to convert the received incoming analog communication signals into incoming digital communication signals, and

wherein, when the first unit processes the incoming digital communication signals as voice signals, the controller controls the telephone circuit unit so as to change at least one physical characteristic of incoming digital communication signals, according to the information regarding physical characteristics demanded in PSTN by the designated nation, and generates incoming voice signals, which are output via a speaker.

3. The facsimile apparatus of claim 2, wherein the microphone and the speaker are incorporated in a handset coupled to the telephone circuit unit.

4. The facsimile apparatus of claim 1, wherein the memory further stores information regarding physical characteristics demanded in PSTN by one or more other nations.

5. The facsimile apparatus of claim 1, further comprising an interface unit coupled between the first unit and the second unit to forward outgoing digital communication signals received from the first unit to the second unit.

6. The facsimile apparatus of claim 5, wherein the interface serves to physically isolate the main unit from the telephone network adaptor unit.

7. The facsimile apparatus of claim 1, wherein the first unit is configured to process facsimile signals received via PSTN.

8. The facsimile apparatus of claim 1, wherein the telephone circuit unit comprises:

a voice signal processor to process outgoing voice signals, wherein the voice signal processor changes at least one physical characteristic of outgoing voice signals according to the information regarding physical characteristics demanded in PSTN by the designated nation.

9. The facsimile apparatus of the claim 8, wherein the voice signal processor comprises an amplifier for amplifying communication signals, wherein the amplifier is controlled by the controller to change a gain of the amplifier.

10. The facsimile apparatus of claim 8, wherein the voice signal processor further comprises a digital filter for passing a predetermined frequency band from communication signals, wherein the filter is controlled by the controller to change a frequency band.

11. The facsimile apparatus of claim 9, wherein the voice signal processor further comprises a digital filter for passing a predetermined frequency band from communication signals, wherein the filter is controlled by the controller to change a frequency band.

12. A method for a facsimile apparatus connectable to a Public Switched Telephone Network (“

PSTN”

) and capable of processing voice communication signals or facsimile communication signals, wherein voice communication signals processed according to information regarding a designated nation, the method comprising;

storing information regarding physical characteristics demanded in PSTN by the designated nation;

receiving outgoing voice signals via a microphone;

controlling a telephone circuit unit so as to change at least one physical characteristic of the outgoing voice signals, according to the information regarding physical characteristics demanded in PSTN by the designated nation, to generate outgoing digital communication signals;

forwarding the outgoing digital communication signals to a telephone network adaptor unit via an interface;

using the telephone network adaptor unit to convert outgoing digital communication signals to outgoing analog communication signals; and

outputting the outgoing analog communication signals via PSTN.

13. The method of claim 12, further comprising:

storing information regarding physical characteristics demanded in PSTN by one or more other nations.

14. A method for adapting a facsimile apparatus voice communication signals according to physical characteristics defined for a designated nation, the method comprising:

reading information regarding physical characteristics defined for a designated nation with respect to processing voice communication signals received or to be transmitted via a Public Switched Telephone Network (“

PSTN”

);

changing a gain of an amplifier embedded in a telephone circuit unit according to the read information regarding the physical characteristics defined for the designated nation; and

changing a pass band of a digital filter embedded in the telephone circuit according to the read information regarding the physical characteristics defined for the designated nation.