| Patent Number |
Title Of Patent |
Date Issued |
| 7551690 |
Transmitter and receiver |
June 23, 2009 |
| A transmitter (1) converts an input signal from a microphone (2) into a plural-bit digital signal by means of an A/D converter (4) at predetermined time intervals. An encoder (6) divides the digital signal into plural blocks and adds a parity bit to each block to thereby form a coded |
| 7430255 |
Impulse noise suppression device |
September 30, 2008 |
| Digital audio data with error detection bits added thereto is inputted to an error detecting and correcting device (4). The correcting device (4) corrects an error when the error is detected in the digital audio data. The digital audio data outputted from the error detecting and correcti |
| 7248655 |
Digital radio receiver |
July 24, 2007 |
| A receiving unit (2) receives a modulated signal resulting from modulating a carrier signal with a digital encoded train resulting from error-correction encoding a digital signal train. A demodulating unit (4) demodulates the digital encoded train from the received modulated signal. |
| 7245678 |
Digital wireless receiver using antenna diversity method |
July 17, 2007 |
| Receiving antennas 2a, 2b receive a digital modulated signal from a digital wireless microphone. The digital modulated signal comprises a carrier signal modulated with successively generated digital signal trains. A changeover switch 4 selects one of the antennas 2a, 2b in response t |
