| Number | Name | Date | Kind |
|---|---|---|---|
| 4794634 | Torihatu et al. | Dec 1988 | |
| 4907274 | Nomura et al. | Mar 1990 | |
| 5022071 | Mozer et al. | Jun 1991 | |
| 5283638 | Engberg et al. | Feb 1994 |
| Number | Date | Country |
|---|---|---|
| 1-176143 | Jul 1989 | JPX |
| 4-63044 | Feb 1992 | JPX |
| Entry |
|---|
| Byte, "Talk to Your Computer" by W.S. Meisel, Oct. 1993. |
| Byte, "Even As We Speak", by J.J. Lazzaro, Apr. 1992. |
| Interface, "ISDN, BC Information Element (specified in Q.931) Has Non-Speech/speech Identifier", Jun. 1992. |
| Byte, "Pen Computing Catches On", by D. Mezick, Oct. 1993. |