Telephone system for selecting and reproducing text on a screen

• US 4,150,254 A
• Filed: 05/03/1978
• Issued: 04/17/1979
• Est. Priority Date: 05/04/1977
• Status: Expired due to Term

• Current Assignee: Licentia Patent-Verwaltungs-GmbH
• Original Assignee: Licentia Patent-Verwaltungs-GmbH
• Inventors: Schussler, Hans, Wiest, Bernhard
• Primary Examiner(s): Stellar, George G.
• Application Number:
  US05/902,749
• Time in Patent Office: 349 Days
• Field of Search: 179/2 DP, 179/2 TV
• US Class Current: 379/93.25
• CPC Class Codes: H04M 11/085 using a television receiver, e.g. viewdata system

Abstract

In a system for displaying text information obtained from a remote text data bank, which system includes a television receiver equipped for receiving and storing the text information and displaying the information on its screen, an operating device operatively associated with the receiver for effecting program selection and control of the television receiver functions, an accessory device which is connected with the television receiver by means of a line, which accessory device includes a modulator, a demodulator, a dialing device, a conventional telephone interface for connection to a telephone and an interface for connecting the accessory device to an outside telephone line, operating device is arranged to establish a connection with the remote text data bank via the line, the accessory device and the outside telephone line for permitting selected texts to be called up for display on the screen of the television receiver.

Claims

1. In a system for displaying text information obtained from a remote text data bank, which system includes a television receiver equipped for receiving and storing the text information and displaying the information on its screen, an operating device operatively associated with the receiver for effecting program selection and control of the television receiver functions, an accessory device which is connected with the television receiver by means of a line, which accessory device includes a modulator, a demodulator, a dialing device, a conventional telephone inferface for connection to a telephone, and an interface for connecting the accessory device to an outside telephone line, the improvement wherein said operating device is operative to establish a connection with the remote text data bank via said line, said accessory device and said outside telephone line for permitting selected texts to be called up for display on the screen of said television receiver.

2. System as defined in claim 1 wherein said operating device is arranged to establish the connection by the conventional pulse method.

3. System as defined in claim 1 wherein said operating device is arranged to establish the connection by a tone dialing process.

4. System as defined in claim 1 wherein said text information is transmitted to said receiver at a bit rate of 600 to 2400 bauds.

5. System as defined in claim 4 further comprising an interface having TTL levels and connecting said accessory device to said receiver via said line.

6. System as defined in claim 4 wherein the occurrence of an occupied state of said outside telephone line is indicated at said television receiver.

7. System as defined in claim 6 which such indication is effected by establishment of an unique-color display.

8. System as defined in claim 1 wherein said accessory device is provided with its own mains voltage connection.

9. System as defined in claim 1 wherein said accessory device is arranged to permit line checking according to testing criteria applicable to a telephone receiver.

10. System as defined in claim 1 wherein said accessory device is arranged to connect a telephone to the outside telephone line so that normal telephonic conversation can take place.

11. System as defined in claim 10 wherein said accessory device is arranged to interrupt its connection to said television receiver when a telephonic conversation connection has been or is being established via the telephone.

12. System as defined in claim 1 wherein said operating device is arranged to effect dialing to an automatic text data bank.

13. System as defined in claim 12 wherein said operating device is arranged to select and call up texts through an interactive dialog.

14. System as defined in claim 13 wherein the text selection is effected by means of feeding a brevity code into said operating device.

15. System as defined in claim 1 wherein said operating device is arranged to be removed from said television receiver.

16. System as defined in claim 15 wherein said operating device communicates with said television receiver by means of an infrared light link.

17. System as defined in claim 15 wherein said operating device communicates with said receiver by means of an ultrasonic link.

18. System as defined in claim 15 wherein said operating device communicates with said receiver by means of a radio emission link.

19. System as defined in claim 15 wherein said operating device communicates with said receiver via a wire connection.

20. System as defined in claim 1 wherein said operating device is arranged to permit a one-time actuation thereof to automatically establish the connection with a text data bank.

21. System as defined in claim 20 wherein said operating device is provided with a function key to which such one-time actuation is to be applied.

22. System as defined in claim 1 arranged to display the text on the screen in synchronism with its reception.

23. System as defined in claim 1 arranged to effect text selection via a telephone in a telephone dialog.