System and method for controlling radio frequency transceiver and method thereof

• US 8,340,595 B2
• Filed: 06/29/2007
• Issued: 12/25/2012
• Est. Priority Date: 11/09/2006
• Status: Active Grant

• Current Assignee: Seoby Lectronics Co., Ltd
• Original Assignee: Seoby Lectronics Co., Ltd
• Inventors: Lee, Sung-Sub
• Primary Examiner(s): Nguyen, Hai V.
• Application Number:
  US11/771,072
• Publication Number:
  US 20080113631A1
• Time in Patent Office: 2,006 Days
• Field of Search: 455/90.3
• US Class Current: 455/90.3
• CPC Class Codes: H04B 1/40 Circuits
• CPC Class Codes: H04B 15/02 Reducing interference from electric apparatus by means located at or near the interfering apparatus

Abstract

A system and a method of controlling an RF transceiver are provided. The system includes a key input unit for detecting a key selection, a memory unit storing control data required for operating the RF transceiver and a code table matching with a key value, a liquid crystal display (LCD) for displaying operational information of the RF transceiver, a controller for turning off the LCD that is in an on-state when a data transmitting/receiving request is detected from the key input unit and turning on the LCD when the data transmitting/receiving is completed, and an RF transmitting/receiving unit for modulating a transmitting signal, power-amplifying the transmitting signal, transmitting the amplified signal as an RF signal to an object device through an antenna, and receiving a response signal as an RF signal from the object device.

Claims

1. A method comprising:

providing a portable electronic device having a keypad, a memory, a liquid crystal display, a radiofrequency transceiver, a radiofrequency antenna and a light emitting diode;

detecting a key value input from the keypad as being a sole condition;

in response to detecting the key value, (a) converting the key value to a code value based on a code table stored in the memory and (b) switching the liquid crystal display to an off state;

modulating the code value to generate a modulated code value;

providing the modulated code value to the radiofrequency transceiver;

amplifying the modulated code value to generate an amplified code value;

converting the amplified code value to a radiofrequency signal;

transmitting the radiofrequency signal from the radiofrequency antenna;

determining whether transmission of the radiofrequency signal is complete; and

switching the liquid crystal display to an on state after transmission of the radiofrequency signal is complete;

wherein while the liquid crystal display is in the off state, a status of the radiofrequency transceiver is displayed using the light emitting diode.

2. The method of claim 1, wherein determining whether transmission of the radiofrequency signal is complete further comprises:

using the radiofrequency antenna to receive a response signal that is made in response to the transmission of the radiofrequency signal; and

analyzing the response signal.

3. The method of claim 1, wherein determining whether transmission of the radiofrequency signal is complete further comprises, after the radiofrequency signal is transmitted from the radiofrequency antenna, detecting a predetermined period of time wherein no further signals are transmitted from the radiofrequency antenna.

4. A method comprising:

providing a portable electronic device having a keypad, a memory, a liquid crystal display, a radiofrequency transceiver, a radiofrequency antenna and a light emitting diode;

detecting a key value input from the keypad as being a sole condition;

in response to detecting the key value, (a) converting the key value to a code value based on a code table stored in the memory and (b) switching the liquid crystal display to an off state;

providing the code value to the radiofrequency transceiver;

amplifying the code value to generate an amplified code value;

converting the amplified code value to a radiofrequency signal;

transmitting the radiofrequency signal from the radiofrequency antenna;

determining whether transmission of the radiofrequency signal is complete; and

switching the liquid crystal display to an on state after transmission of the radiofrequency signal is complete;

wherein while the liquid crystal display is in the off state, a status of the radiofrequency transceiver is displayed using the light emitting diode.

5. The method of claim 4, wherein determining whether transmission of the radiofrequency signal is complete further comprises:

using the radiofrequency antenna to receive a response signal that is made in response to the transmission of the radiofrequency signal; and

analyzing the response signal.

6. The method of claim 4, wherein determining whether transmission of the radiofrequency signal is complete further comprises, after the radiofrequency signal is transmitted from the radiofrequency antenna, detecting a predetermined period of time wherein no further signals are transmitted from the radiofrequency antenna.