Frequency selection system including a wireless microphone and a receiver

• US 8,380,131 B2
• Filed: 07/20/2010
• Issued: 02/19/2013
• Est. Priority Date: 07/20/2010
• Status: Active Grant

• Current Assignee: Albert Chiang
• Original Assignee: Albert Chiang
• Inventors: Chiang, Albert
• Primary Examiner(s): NGUYEN, TUAN HOANG
• Application Number:
  US12/805,232
• Publication Number:
  US 20120021686A1
• Time in Patent Office: 945 Days
• Field of Search: 455 411- 413, 455/62, 455/63.3, 455/88, 455/550.1, 455/569.1, 381/311
• US Class Current: 455/41.3
• CPC Class Codes: H04B 1/20 for coupling gramophone pick-up, recorder output, or microphone to receiver

Abstract

A frequency selection system includes a wireless microphone and a receiver. The wireless microphone includes a microphone element for receiving sound and outputting a corresponding audio signal, and a transceiver device electrically coupled to the microphone element for wireless transmission of the audio signal and configuration communication. The transceiver device has a first communication unit operable to receive a frequency code. The transceiver device also includes a wireless transmission unit operable to wirelessly transmit the audio signal received from the microphone element using a wireless transmission frequency that corresponds to the frequency code received by the first communication unit. The receiver includes a second communication unit for wirelessly receiving a command code from the first communication unit and wirelessly sending the frequency code to the first communication unit.

Claims

1. A frequency selection system comprising:

a wireless microphone including

a microphone element for receiving sound and outputting a corresponding audio signal, and

a transceiver device electrically coupled to said microphone element for wireless transmission of the audio signal and configuration communication, said transceiver device having

a first communication unit operable to receive a frequency code,

a wireless transmission unit operable to wirelessly transmit the audio signal received from said microphone element using a wireless transmission frequency that corresponds to the frequency code received by said first communication unit,

a first microprocessor operable to wirelessly send a command code through said first communication unit, to receive the frequency code through said first communication unit, and to drive said wireless transmission unit such that the wireless transmission frequency used thereby to transmit the audio signal corresponds to the frequency code received from said first communication unit, and

a first operable part that is operable to drive said first microprocessor to send the command code and to receive the frequency code; and

a receiver that includes

a second communication unit for wirelessly receiving the command code from said first communication unit and wirelessly sending the frequency code to said first communication unit,

a receiving unit for wirelessly receiving the audio signal transmitted from said wireless transmission unit using the wireless transmission frequency corresponding to the frequency code,

a frequency selection unit for selecting the wireless transmission frequency, said frequency selection unit being drivable to control said wireless receiving unit to use the selected wireless transmission frequency to receive the audio signal, and

a second microprocessor for driving said frequency selection unit to select the wireless transmission frequency in response to receipt of the command code received by said second communication unit from said first communication unit, for generating the frequency code in such a manner that the frequency code corresponds to the selected wireless transmission frequency, and for sending the frequency code to said first communication unit through said second communication unit.

2. The frequency selection system as claimed in claim 1, wherein said transceiver device and said first operable part are mounted to said wireless microphone.

3. The frequency selection system as claimed in claim 1, wherein said first operable part includes a first button.

4. The frequency selection system as claimed in claim 1, wherein the communication frequency between said first communication unit and said second communication unit is substantially 2.4 GHz.

5. The frequency selection system as claimed in claim 1, wherein said transceiver device further includes an identity unit that provides an identification code that is transmitted from said first communication unit to said second communication unit,

said receiver further including an identity recognition unit for recognizing the identification code received by said second communication unit and for driving said second communication unit to send the frequency code after said identity code has been recognized.

6. The frequency selection system as claimed in claim 5, wherein said first microprocessor is electrically coupled to said first communication unit, said wireless transmission unit, said first operable part, and said identity unit, said identity unit being electrically coupled between said first communication unit and said first microprocessor.

7. The frequency selection system as claimed in claim 5, wherein said receiver further includes a housing that contains said second communication unit, said receiving unit, said frequency selection unit, said second microprocessor, said identity recognition unit, and a second operable part mounted to said housing and operable to drive said frequency selection unit to determine a selected wireless transmission frequency.

8. The frequency selection system as claimed in claim 7, wherein said second operable part includes a second button.

9. The frequency selection system as claimed in claim 7, wherein said second microprocessor is coupled electrically to said second communication unit, said frequency selection unit, and said identity recognition unit, said identity recognition unit being coupled electrically between said second microprocessor and said second communication unit, said second operable part being electrically coupled to said frequency selection unit.

10. The frequency selection system as claimed in claim 1, wherein said selected wireless transmission frequency determined by said frequency selection unit is a frequency with interference below a threshold level.

11. The frequency selection system as claimed in claim 1, wherein said selected wireless transmission frequency determined by said frequency selection unit has the least interference of a set of searched frequencies.