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Class Information
Number: 434/315
Name: Education and demonstration > Audio recording and visual means > Image projector > With code on image carrier for controlling operation of apparatus
Description: Subject matter wherein the visual information carrier carries a code (e.g., light or opaque area, notch, aperture, etc.) to control the operation of the devices.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7261612 |
Methods and systems for read-aloud books |
Aug. 28, 2007 |
| 6011949 |
Study support system |
Jan. 4, 2000 |
| 5899700 |
Embedded multimedia control code method and apparatus |
May. 4, 1999 |
| 5710834 |
Method and apparatus responsive to a code signal conveyed through a graphic image |
Jan. 20, 1998 |
| 5164865 |
System and method for locating information on a continuous image medium |
Nov. 17, 1992 |
| 4994987 |
Image access system providing easier access to images |
Feb. 19, 1991 |
| 4677604 |
Method for controlling access to recorded data |
Jun. 30, 1987 |
| 4552535 |
Mechanical assembly for audio-visual teaching machines |
Nov. 12, 1985 |
| 4005530 |
Audio-visual training device with selective branching |
Feb. 1, 1977 |
| 3968575 |
Teaching device |
Jul. 13, 1976 |
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