| 发明名称 | Packet processor verification methods and systems | ||
| 摘要 | Methods and systems for transmitting and receiving data using audio devices but without being detectable by a human ear are disclosed. For example, a device for transmitting data can include a modulator configured to transform digital data into a modulated signal having a frequency no less than about 20 kHz, and an audio transmitter coupled to an output of the modulator configured to transmit the modulated signal into a sound propagating medium without being detected by a human ear. The methods and systems can be used to perform two-factor authentication for permitting a user to access a remote server or other device. | ||
| 申请公布号 | US9479373(B2) | 申请公布日期 | 2016.10.25 |
| 申请号 | US201314107172 | 申请日期 | 2013.12.16 |
| 申请人 | Lockheed Martin Corporation | 发明人 | Hrybyk Alexander Gregory;Tang Kwok Lee;Panczenko Michael |
| 分类号 | G06F17/00;H04L27/20;H04L27/233;H04L29/06 | 主分类号 | G06F17/00 |
| 代理机构 | Oblon, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A device for transmitting data, comprising: a coding circuit that embeds error correction and/or detection codes into digital data; a continuous-phase frequency shift keying modulator configured to transform digital data including the error correction and/or detection codes into a modulated signal having a frequency no less than about 20 kHz; and an audio transmitter coupled to an output of the modulator configured to transmit the modulated signal into a sound propagating medium without being detected by a human ear. | ||
| 地址 | Bethesda MD US | ||