Telecommunications – Transmitter – Angle modulation
Reexamination Certificate
2011-04-05
2011-04-05
Le, Thanh C (Department: 2618)
Telecommunications
Transmitter
Angle modulation
C455S118000
Reexamination Certificate
active
07920835
ABSTRACT:
An FM transmitter with improved degree of freedom in parts selection comprises: an oscillator connected with a crystal oscillator; a clock generating circuit uses a signal formed by frequency-dividing an oscillator output as a reference frequency, and which generates a clock having a frequency of an integer multiple of the frequency of the reference frequency; a DSP operates synchronously with the clock performing stereo modulation processing, FM modulation processing, and IQ modulation processing to inputted stereo data by digital processing; a frequency synthesizer generates a reference having a frequency an integer multiple of the frequency of the reference; mixers which mix signals outputted from the DSP with signals generated by the frequency synthesizer, respectively; an adder which adds outputs of the mixers; and an amplifier which amplifies an output signal of the adder and transmits the amplified signal from an antenna.
REFERENCES:
patent: 5995552 (1999-11-01), Moriyama
patent: 6564040 (2003-05-01), Fujiwara
patent: 2006/0019616 (2006-01-01), Abe et al.
patent: 2007/0195961 (2007-08-01), Komori
patent: 08-065105 (1996-03-01), None
patent: 08-307291 (1996-11-01), None
patent: 09-321720 (1997-12-01), None
patent: 2000-228635 (2000-08-01), None
patent: 2000-341165 (2000-12-01), None
Le Thanh C
patenttm.us
Ricoh & Company, Ltd.
LandOfFree
FM transmitter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with FM transmitter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FM transmitter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2704800