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Class Information
Number: 434/316
Name: Education and demonstration > Audio recording and visual means > Image projector > With code on audio carrier for controlling operation of apparatus
Description: Subject matter wherein the sound information carrier carries a code (e.g.., a tone of selected frequency, etc.) to control the operation of the device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6710955 |
Method and apparatus for converting an analog audio source into a digital format |
Mar. 23, 2004 |
| 6108515 |
Interactive responsive apparatus with visual indicia, command codes, and comprehensive memory functions |
Aug. 22, 2000 |
| 5888070 |
Electronic aid for reading practice |
Mar. 30, 1999 |
| 5873735 |
Information reproducer and information creating unit |
Feb. 23, 1999 |
| 5710834 |
Method and apparatus responsive to a code signal conveyed through a graphic image |
Jan. 20, 1998 |
| 5609487 |
Audio visual karaoke system using audio cassette |
Mar. 11, 1997 |
| 5234346 |
Educational and training simulator system and method |
Aug. 10, 1993 |
| 4968254 |
System for synchronizing the output signals from multiple media |
Nov. 6, 1990 |
| 4552535 |
Mechanical assembly for audio-visual teaching machines |
Nov. 12, 1985 |
| 4482328 |
Audio-visual teaching machine and control system therefor |
Nov. 13, 1984 |
| 4470675 |
Random access control apparatus and method for slide projector |
Sep. 11, 1984 |
| 4165159 |
Microprocessor controlled filmstrip projector |
Aug. 21, 1979 |
| 4005530 |
Audio-visual training device with selective branching |
Feb. 1, 1977 |
| 3984923 |
System and process for preschool screening of children |
Oct. 12, 1976 |
| 3968576 |
Method and apparatus of aural/visual correspondence for the improvement of reading |
Jul. 13, 1976 |
| 3946503 |
Audio-visual apparatus and method of using the apparatus for obtaining computer compatible data from an individual |
Mar. 30, 1976 |
| 3939579 |
Interactive audio-visual instruction device |
Feb. 24, 1976 |
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