Wireless device and method in the wireless device
US10043505B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2015 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Sep 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/167
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A transmitter comprises an analog-to-digital converter, an audio signal compressor, a framer, a scrambler, a modulator, and a transmitting unit. The analog-to-digital converter translates an analog audio signal into a digital Pulse-Code Modulation (PCM) format audio signal. The audio signal compressor compresses the PCM format audio signal into a coded bit stream with a modified Adaptive differential Pulse-code Modulation (ADPCM) algorithm. The framer packetizes the coded bit stream into a 1.125 ms frame data by adding a preamble, a signaling field, a data field, and a cyclic redundancy check field to the coded bit stream. The scrambler scrambles the frame data with an ID number. The modulator generates a modulated signal by modulating the scrambled frame data with a predetermined modulation scheme. The transmitting unit transmits the modulated signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.