Earphone device with impedance correction unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 15, 2015
Grant Date -
Jan 31, 2013
app pub date -
Jul 27, 2012
filing date -
Jul 29, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Various aspects of this disclosure are directed to an earphone device comprising a speaker unit including at least one balanced armature transducer to convert an electrical signal into an acoustic signal. The electrical signal may define a frequency range comprising a first frequency and a second frequency. The earphone device may further comprise an impedance correction unit configured to receive the electrical signal and compliment an impedance of the speaker unit such that a sum of an impedance of the impedance correction unit and the impedance of the speaker unit at the first frequency is substantially similar to a sum of an impedance of the impedance correction unit and the impedance of the speaker unit at the second frequency.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- H04R Class
- 1738 Applications Filed
- 1523 Patents Issued To-Date
- 87.63 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- H04R Class
- 12.52 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 15, 2027 |
