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 Title: |
US6717533:
Method and apparatus for combining a wireless receiver and a non-wireless receiver
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Seaberg, Charles Eric; Austin, TX
Buchwald, Gregory J.; Crystal Lake, IL
Inayatullah, Azfar; Austin, TX
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| Assignee: |
Motorola, Inc., Schaumburg, IL
other patents from MOTOROLA, INC. (386735) (approx. 18,357)
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| Published / Filed: |
2004-04-06
/ 2001-05-31
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| Application Number: |
US2001000872270
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| IPC Code: |
Advanced:
H04B 1/28;
H04R 5/02;
IPC-7:
H03M 1/12;
H03M 7/00;
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| ECLA Code: |
H04B1/00M2S; H04B1/00D; H04B1/00M; H04B1/28; H04R5/02;
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| U.S. Class: |
341/061;
341/155;
455/323;
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| Field of Search: |
341/061,143
381/119
375/324
370/545,342,320
455/323,260
331/117 R,179,2
725/081
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| Priority Number: |
| 2001-05-31 |
US2001000872270 |
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| Abstract: |
A vehicular audio system receives audio inputs from audio sources and a radio receiver. Analog audio is converted to digital, and digital audio remains natural digital. The receiver front end converts a radio signal to an intermediate frequency then an ADC converts that to a digital signal. The inputs that are converted to digital are selectively mixed with each other and with the natural digital signals. This allows for sounds from multiple sources to be heard simultaneously so that a telephone ring may be provided without requiring background music to be interrupted and for uses such as voice by microphone over a music tape. A reference frequency to the receiver front end of 7.2 MHz is particularly beneficial for noise reduction and consequent mixing of digital audio at 48 KHz, the standard frequency for typical digital audio inputs.
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| Attorney, Agent or Firm: |
Clingan, Jr., James L. ;
Hill, Susan C. ;
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| Primary / Asst. Examiners: |
Wamsley, Patrick;
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Family: |
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First Claim:
Show all 22 claims |
What is claimed is:
1. A method for combining a wireless receiver and a wired receiver, comprising the steps of:
- sampling a wireless input signal at a first sample frequency as part of an analog to digital conversion to convert the wireless input signal to a digital converted wireless signal;
- providing a wired input signal as a digital wired signal, the digital wired signal having a second sample frequency, wherein the first sample frequency and the second sample frequency are different;
- if the first sample frequency of the digital converted wireless signal is not a predetermined frequency, rate converting the digital converted wireless signal from the first sample frequency to a predetermined sample frequency to produce a digital wireless result signal; and
- if the second sample frequency of the digital wired signal is not the predetermined sample frequency, rate converting the digital wired signal from the second sample frequency to the predetermined sample frequency to produce a digital wired result signal.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 8 U.S. patent(s) that reference this one
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