WIRELESS SYSTEM SYNCHRONIZATION USING FREQUENCY SHIFT MODULATION AND ON-OFF KEYING MODULATION

• US 20090147837A1
• Filed: 12/04/2008
• Published: 06/11/2009
• Est. Priority Date: 12/07/2007
• Status: Abandoned Application

• Current Assignee: Eddie Lau
• Original Assignee: Eddie Lau
• Inventors: LAU, Eddie
• Application Number:
  US12/327,973
• Publication Number:
  US 20090147837A1
• Time in Patent Office: Days
• US Class Current: 375/219
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 27/02 Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation H04L27/32 takes precedence
• CPC Class Codes: H04L 27/10 Frequency-modulated carrier systems, i.e. using frequency-shift keying H04L27/32 takes precedence
• CPC Class Codes: H04W 52/0225 using monitoring of external events, e.g. the presence of a signal
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system and method of wireless communication, in which both OOK and FSK modulation transceivers are used for communication among participating devices. On-Off Key (“OOK”) may be used to awaken a communication device, establish a communication channel, and handle transmission and reception of the control signal. In doing so, communication devices operating according to the invention may use less power than conventional communication devices. Once certain initial data is exchanged between communication devices, Frequency Shift Keying (“FSK”) may be used to provide the ability for many users to communicate in a more secure fashion, so that sensitive information, such as voice and data, may be transmitted between communication devices. In this manner, the privacy of data and voice signals may be more securely protected and transmitted by the FSK modulated signal.

Claims

1. A wireless communication device, comprising

(a) an OOK transceiver;

(b) a FSK transceiver;

(c) a switch;

(d) an antenna; and

(e) a micro-controller, wherein both said OOK transceiver and FSK transceiver are connected to said switch and then further to said antenna.

2. The wireless communication device of claim 1, wherein said micro-controller comprising an algorithm coordinating said OOK transceiver and FSK transceiver.

3. The wireless communication device of claim 2, wherein said algorithm is capable of determining a channel and a time slot from information provided by said OOK transceiver, which is available for further communication through said FSK transceiver.

4. The wireless communication device of claim 1, wherein said OOK transceiver handles transmission and reception of control signals and said FSK transceiver handles transmission and reception of a secured communication content.

5. The wireless communication device of claim 1, which is a mobile phone handset.

6. A communication system, comprising at least two wireless communication devices of claim 1.

10. The wireless communication device of claim 1, which is a digital walkie-talkie set.

7. A method of wireless communication, comprising the steps of:

(a) using an OOK transceiver to send a control signal to initiate a communication between two or more wireless communication devices; and

(b) using an FSK transceiver to communicate a secured content using a channel and time slot indicated in control signal from OOK transceiver

8. The method of claim 7, wherein said control signal is to awaken a communication device and establish a communication channel between participating communication devices.

9. The method of claim 8, wherein said secured content is text, image, audio or video data.