Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Application No. | Application Title | Issue Date |
| 20090128090 | Portable charger for consumer electronic devices Disclosed herein is a portable charger for mobile phones and other consumer electronic devices like iPOD, MP3 players, etc. The portable charger is a plug-and-charge device, it includes both male and female connectors, built-in rechargeable Li-Polymer or Li-Ion battery,... | 05/21/2009 |
| 20080187142 | FM TRANSMITTER A stereo modulator converts an audio signal to a stereo composite signal. A frequency modulator receives the stereo composite signal and modulates the frequency of a carrier wave using the stereo composite signal as a modulation signal. An amplitude modulator modulates ... | 08/07/2008 |
| 20080013743 | STEREO DECODING SYSTEM CAPABLE OF REDUCING THE PHASE SHIFT DURING THE SIGNAL TRANSFORMING A stereo decoding system comprises an oscillator, a bandpass filter, a PLL unit and a stereo decoder. The oscillator generates a first signal with a center frequency. The bandpass filter receives a stereo multiplexed signal and the first signal to filter out a pilot sig... | 01/17/2008 |
| 20070242831 | Stereo decoder and method for processing pilot signal A stereo decoder and a method therefor are provided. The stereo decoder receives a MPX signal from an FM demodulator, and comprises a first auto-calibration circuit, a band-pass filter, a second auto-calibration circuit, a slicer and a PLL circuit. The first auto-calibr... | 10/18/2007 |
| 20060188102 | BTSC encoding method with digital FM modulation A method of digital BTSC (Broadcast Television Systems Committee) encoding featuring integrated digital FM modulation comprises digitally encoding and FM modulating. A left audio input signal (64) and a right audio input signal (66) are digitally encoded i... | 08/24/2006 |
| 20050036627 | Mechanism for using the allpass decomposition architecture for the cauer low pass filter used in a BTSC An BTSC encoder with an improved digital filter structure substantially implemented on a single CMOS integrated circuit is described. By cascading first and second order allpass filter structures to form a higher order digital filter, such as a Cauer low pass filter, li... | 02/17/2005 |
