Mobile telephony station with speaker phone function

• US 6,751,446 B1
• Filed: 06/30/2000
• Issued: 06/15/2004
• Est. Priority Date: 06/30/1999
• Status: Expired due to Term

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Hong Joo, Park, Hee Bong, Joo, Nam Sik, Kim, Sin Woo, Lee, Keun Taek
• Primary Examiner(s): Tran, Sinh
• Assistant Examiner(s): NGUYEN, DAVID Q
• Application Number:
  US09/606,543
• Time in Patent Office: 1,446 Days
• Field of Search: 379/433.13, 379/433.02, 379/433.06, 379/420.02, 379/433.12, 455/550, 455/575.1, 455/90.1, 455/350, 455/347, 455/569, 455/569.1
• US Class Current: 455/90.1
• CPC Class Codes: H04M 1/0214 Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position combined with translation movement H04M1/0235
• CPC Class Codes: H04M 1/0245 using open/close detection
• CPC Class Codes: H04M 1/605 involving control of the receiver volume to provide a dual operational mode at close or far distance from the user

Abstract

Mobile telephony station with a speaker phone function including a front panel having a plurality of menu selecting keys for selecting menu, an LCD panel for displaying various information and messages, a mike for putting in a transmission speech, and a first speaker for presenting a received speech, a flip hinged on the front panel for protecting the LCD panel, a sensor switch on the front panel for sensing opening/closing of the flip, and a second speaker for selectively presenting a received speech, together with the first speaker, depending on a switching state of the sensor switch, to carry out the speaker phone function, thereby permitting to select the speaker phone function automatically at opening a flip, in a setting mode, or by using a toggle switch.

Claims

1. A mobile telephony station with a speaker phone function, comprising:

a flip cover movably connected to a body;

a sensor for sensing an open state and a closed state of the flip cover;

a controller for placing the mobile telephony station in a speaker phone mode in response to the sensor sensing that the flip cover is in the open state;

a CODEC for receiving and demodulating a digitized, compressed and modulated audio signal into an original signal and converting into an analog signal, and for compressing, modulating, and digitizing an analog audio signal to be transmitted into a state required for transmission;

a duplex controller for, in the speaker phone mode, selectively receiving and forwarding only one of the received audio signal from the CODEC, and the audio signal to be transmitted to the CODEC;

a microphone for directly inputting the audio signal intended to be transmitted into one of the duplex controller and the CODEC;

a first speaker for reproducing an analog audio signal received from the CODEC when the mobile telephony unit is in a regular telephone mode; and

a second speaker for reproducing an analog audio signal received through the duplex controller when the mobile telephony unit is in the speaker phone mode.

2. A mobile telephony station with a speaker phone function, comprising:

a front panel having a plurality of menu selecting keys for selecting a menu, an LCD panel for displaying information and messages, a microphone for inputting speech to be transmitted, and a first speaker for reproducing received speech;

a flip cover hinged on the front panel for protecting the LCD panel;

a sensor switch on the front panel for sensing opening and closing of the flip cover;

a second speaker for selectively reproducing the received speech, together with the first speaker, depending on a switching state of the sensor switch, to carry out the speaker phone function; and

a CODEC for receiving and demodulating a digitized, compressed and modulated audio signal into an original signal and converting into an analog signal, and for compressing, modulating, and digitizing an analog audio signal to be transmitted into a state required for transmission;

wherein the second speaker is fitted in a recess with a streamlined curvature in horizontal and vertical directions of the back face of the back panel, with a ridge sloped radially around the recess formed in a center portion of the back panel.

3. A mobile telephony station with a speaker phone function, comprising:

a mode selecting means for selecting the speaker phone mode;

a controller for switching to a speaker phone mode according to a state of the mode selecting means;

a coder/decoder (CODEC) for, under the control of the controller,

receiving, and demodulating a digitized, compressed and modulated audio signal into an original audio signal, and

converting the original audio signal into an analog audio signal, and

compressing, modulating, and digitizing an analog audio signal to be transmitted into a state required for transmission;

a duplex controller for, in the speaker phone mode, selectively receiving and forwarding only one of the received audio signal from the CODEC, and the audio signal to be transmitted to the CODEC;

a microphone for directly inputting the audio signal intended to be transmitted into one of the duplex controller and the CODEC;

a first speaker for reproducing an analog audio signal received from the CODEC when the mobile telephony unit is in a regular telephone mode; and

a second speaker for reproducing an analog audio signal received through the duplex controller when the mobile telephony unit is in the speaker phone mode.

4. A mobile telephony station as claimed in claim 3, wherein the mode selecting means is selected by pressing a key.

5. A mobile telephony station as claimed in claim 4, wherein the key is a toggle switch.

6. A mobile telephony station as claimed in claim 3, wherein the mode selecting means is fitted to a side of the mobile telephony station in a recess from a surface.

7. A mobile telephony station as claimed in claim 3, wherein the mode selecting means is selected by a selecting key for selecting the speaker phone function in a form of menu.

8. A mobile telephony station with a speaker phone function, comprising:

a controller for controlling operation of the mobile telephony station to carry out the speaker phone function according to a regular mode or a speaker phone mode selected by a user;

a vocoder for, under the control of the controller,

receiving and demodulating a compressed and modulated audio signal into an original audio signal, and

receiving, compressing, and modulating a digital audio signal to be transmitted into a state required for transmission;

an audio coder/decoder (CODEC) for converting the original signal provided from the vocoder into a received analog audio signal and filtering a noise component added in transmission, and converting an analog audio signal to be transmitted into the digital audio signal to be transmitted;

a microphone for providing to the audio CODEC the analog audio signal to be transmitted;

a first amplifier for amplifying the received audio signal from the audio CODEC to a preset level and reproducing the received audio signal through a receiver in the regular mode under the control of the controller; and

a second amplifier for amplifying the received audio signal from the audio CODEC to a preset level and reproducing the received audio signal through a speaker exclusively in the speaker phone mode under the control of the controller,

wherein, in the speaker phone mode, the audio CODEC removes an echo between the speaker and the microphone.

9. A mobile station with a speaker phone function, comprising:

a front panel having a plurality of menu selecting keys for selecting menu, an LCD panel for displaying various information and messages, a mike for putting in a transmission speech, and a first speaker for presenting a received speech;

a flip hinged on the front panel for protecting the LCD panel;

a sensor switch on the front panel for sensing opening/closing of the flip; and

a second speaker for selectively presenting a received speech, together with the first speaker, depending on a switching state of the sensor switch, to carry out the speaker phone function, wherein the second speaker is fitted in a recess with a streamlined curvature in horizontal and vertical directions of the back face of the back panel and a ridge sloped radially around the recess formed in a center portion of the back panel.