Patent ID: 8478104
Filing Date: 2013-07-02
Classification: H04H

Abstract:
1. A portable content playing device arranged within a housing, comprising: a radio frequency identification (RFID) receiving and decoding circuit, coupled to an RFID antenna circuit, configured to receive a given RFID signal and generate corresponding RFID digital input data; a control unit configured to retrievably store multimedia content, receive a given read command signal and, in response, select multimedia content from the stored multimedia content, and generate the selected multimedia content as playback multimedia data; a digital-to-analog converter (DAC) configured to convert the generated playback multimedia data to an analog multimedia playback signal, wherein digital access to the stored multimedia content is permanently disabled after initialization; a modulator/transmitter, coupled to a transmitter antenna circuit, configured to modulate a given radio frequency (RF) carrier signal by the analog multimedia playback signal, generate a corresponding modulated RF carrier signal, and transmit the generated modulated RF carrier signal from the transmitter antenna circuit; and a power supply configured to receive a given power input signal and generate a corresponding internal supply power to the RFID receiving and decoding circuit, the control unit, the DAC, and the transmitter wherein the control unit is configured to detect a write command in the RFID digital input data, detect multimedia content in the RFID digital input data, and retrievably store the detected multimedia content in accordance with the detected write command.