| Patent application number | Description | Published |
|---|
| 20080317105 | Low-current radio-frequency transceiver for use in short-range duplex communications applications - A low-current transceiver, powered by two small low-voltage batteries, for use in wireless headset/phoneset applications, such as hands-free headsets used with cellular telephones. Re-use of current from at least one circuit to provide power to at least one other power-consuming element of the transceiver, along with interrupt-driven control of the current made available to transmit and receive circuits, enables extended battery life (e.g., 120 hours). The headset/phoneset circuits incorporate a technique that draws an extremely low supply current from two low-voltage batteries while providing clear two-way communication over a range of about 3 meters. | 12-25-2008 |
| 20090157803 | Method for capture, aggregation, storage, and transfer of internet content for time-shifted playback on a portable multimedia device - A method for capture, aggregation, storage and transfer of Internet content for time-shifted playback on a portable multimedia device utilizing a content time-shifter system which is programmed and maintained via a web-based maintenance server, and schedules capture of content via on-line schedule listing and media listing services. | 06-18-2009 |
| 20090305646 | AM/FM/SW RECEIVER COUPLED WITH FM TRANSMITTER FOR PERSONAL MULTIMEDIA PLAYERS FOR LISTENING AND RECORDING - An AM/FM/SW receiver coupled with an FM transmitter for personal multimedia players for both listening and recording uses innovative antenna and shielding design and placement to raise the signal-to-noise ratio of the intended broadcast content to a level which is acceptable to the listener. | 12-10-2009 |
| 20100031145 | System and Method for Wireless Transfer of Content and/or Data Between Multimedia Devices - A method and apparatus for streaming and/or transferring data and/or content between a source multimedia player (SMP) having mass storage and at least one destination multimedia player (DPM), including SMP connection means for bringing the inventive apparatus into either wired or wireless communication with the SMP using a selected transfer medium; a user interface and identification and selection software for identifying content on the SMP mass storage for extraction; file extraction software for extracting the content from mass storage on the SMP; input hardware for receiving content data from the SMP; formatting or storage software for formatting the extracted content into a format suitable for transmission to a DMP or for storing the content to internal or external flash memory for later transmission to one or more DMPs; transmission hardware for transmitting the formatted content, or transferring the stored content, to DMPs; and DMP connection means for bringing the inventive apparatus into wired or wireless communication with one or more DMPs. | 02-04-2010 |
| 20100159836 | AUTOMATIC PRESENT TUNING USING RDS PROTOCOL - An automatic preset following system for use with portable multimedia playback devices. The system uses RDS protocols including, at a minimum, AF and PI. Apparatus include an RDS enabled FM transmitter for use with a portable multimedia playback device, the transmitter having a user interface with buttons for presetting the transmitter to broadcast a signal at preset PM frequencies, and an RDS enabled FM receiver for automatically tuning to the different preset FM frequencies entered into the RDS enabled FM transmitter. | 06-24-2010 |
| 20110087600 | METHOD TO MANAGE PROTECTED FILE TRANSFERS BETWEEN PORTABLE MEDIA DEVICES - A method to authorize, facilitate, and mediate transfer of DRM protected files from one portable multimedia player ( | 04-14-2011 |
| Patent application number | Description | Published |
|---|
| 20080298456 | Hybrid Digital Digital/Analog Fm Multiplexer Transmitter - An audio circuit digitizes raw analog input and uses a digital signal processor (DSP) to filter, modulate, and mix the input to produce a multiplex composite signal. The multiplex composite signal is output from the DSP through a digital/analog converter (DAC), and modulates a conventional FM RF stage. In a first preferred, hydrid embodiment, the composite signal is output from the DSP through a digital/analog converter (DAC), and modulates a conventional FM RF stage. In a second preferred, fully digital embodiment, carrier modulation takes place in the DSP, and FM modulated RF is output via a fast DAC for final filtering and radiation. | 12-04-2008 |
| 20090110206 | METHOD AND APPARATUS FOR SENSING A SIGNAL ABSENCE OF AUDIO AND AUTOMATICALLY ENTERING LOW POWER MODE - An electronic device having a unique audio sensing method that senses the event of no audio for a predetermined period of time. The sensed information is used by a microprocessor to bring the device into a low-power mode. The same method may be used to bring a device into active mode from a low-power mode. | 04-30-2009 |
| 20100182507 | METHOD AND APPARATUS FOR USING A COLOR INDICATOR TO DISPLAY FREQUENCY OR CHANNEL SELECTION - A system for matching the currently tuned frequency of a signal transmitting device with that of a signal receiving device, including a transmitter having an illuminated color display which changes colors in relation to the channel or frequency on which the transmitter is currently tuned, and a signal receiving device having an illuminated color display which changes colors in relation to the channel or frequency on which the signal receiving unit is currently tuned. Each device has a channel selector function so that the frequency to which the device is tuned can be changed, thereby changing the color displayed. | 07-22-2010 |
| 20100315021 | CIRCUIT AND METHOD FOR CONTROLLING RGB LED COLOR BALANCE USING A VARIABLE BOOSTED SUPPLY VOLTAGE - A microprocessor uses one or more output pins to pulse width modulate a charge pump network to achieve a boosted voltage on an output port. The boosted voltage is then used to drive an LED, which may have a higher voltage drop than that of the starting un-boosted voltage. The adjustment of either the frequency or duty cycle of the PWM signal allows for adjustment of the steady state output voltage. This allows for the adjustment of the brightness of the LED by firmware while supplying enough voltage drop required by the LEDs. | 12-16-2010 |
