JPS5016137B1 - - Google Patents
Info
- Publication number
- JPS5016137B1 JPS5016137B1 JP5757869A JP5757869A JPS5016137B1 JP S5016137 B1 JPS5016137 B1 JP S5016137B1 JP 5757869 A JP5757869 A JP 5757869A JP 5757869 A JP5757869 A JP 5757869A JP S5016137 B1 JPS5016137 B1 JP S5016137B1
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
- G09B5/12—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations different stations being capable of presenting different information simultaneously
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Television Signal Processing For Recording (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Electrically Operated Instructional Devices (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74655268A | 1968-07-22 | 1968-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5016137B1 true JPS5016137B1 (da) | 1975-06-11 |
Family
ID=25001343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5757869A Pending JPS5016137B1 (da) | 1968-07-22 | 1969-07-21 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5016137B1 (da) |
| DE (1) | DE1936003A1 (da) |
| GB (1) | GB1274040A (da) |
-
1969
- 1969-07-15 DE DE19691936003 patent/DE1936003A1/de active Pending
- 1969-07-17 GB GB36135/69A patent/GB1274040A/en not_active Expired
- 1969-07-21 JP JP5757869A patent/JPS5016137B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1274040A (en) | 1972-05-10 |
| DE1936003A1 (de) | 1970-08-27 |