EP0113022B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Videotext system with public terminals
Assignee: Alcatel Lucent Deutschland AG
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Filing: 1983-11-23
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Granted: 1989-05-31
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Expires: 2003-11-23
Abstract
Abstract In public videotex (Btx) terminals, different pages are displayed successively on the screen in the off-line mode (e.g., advertisements and user instructions). To be able to update such off-line pages at low cost, a page memory in the terminal is constructed as a random-access memory (46). A central operating facility contains an editing device in which the information and control characters required to display an off-line page are produced. These characters are transmitted to the terminal and written into the random-access memory (46). This may be effected automatically when the supply voltage is turned on.
Inventors
- 👤 Gerhard Jakob Simon
- 👤 Gerhard Schneider
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 20:08
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/08; H04M11/085; G; G06; G06F; G06F3/00; G06F3/14; G06F3/153
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
124 words
Videotex system with public terminals whereby information is called up from a videotex center (1) over a telecommunication network and presented in the form of videotex pages on the screen (34) of the terminal (3, 4), the terminal being provided with a memory (46) containing information which is presented as off-line videotex pages on the screen, characterized in that the memory is a read/write memory (46), that a central operating facility (16) is provided which includes an editing device (17) in which information and control characters giving an off-line videotex page are produced, and that said characters are transmitted from the operating facility (16) to the videotex center (1), from which they are transmissible over the telecommunication network (2) to the read/write memory (46).
Claim 2
Dependent Claim
124 words
Videotex system with public terminals whereby information is called up from a videotex center (1) over a telecommunication network and presented in the form of videotex pages on the screen (34) of the terminal (3, 4), the terminal being provided with a memory (46) containing information which is presented as off-line videotex pages on the screen, characterized in that the memory is a read/write memory (46), that a central operating facility (16) is provided which includes an editing device (17) in which information and control characters giving an off-line videotex page are produced, and that said characters are transmitted from the operating facility (16) to the videotex center (1), from which they are transmissible over the telecommunication network (2) to the read/write memory (46).
Claim 3
Dependent Claim
42 words
A videotex system as claimed in claim 1, characterized in that the editing device (17) produces operating parameters which are loaded into the storage (6) of the videotex center (1) and transmitted over the telecommunication network (2) to the read/write memory (46).
Claim 4
Dependent Claim
56 words
A videotex system as claimed in claim 1 or 2, characterized in that the central operating facility (16) contains a diagnostic computer (18) in which test and diagnostic programs are produced which are loaded into the read/write memory (46) via the telecommunication network (2) and executed by a control computer (44) of the terminal (3, 4).
Claim 5
Dependent Claim
45 words
A videotex system as claimed in claim 3, characterized that the results of the test and diagnostic programs are displayed by the control computer (44) on the screen (34) of the terminal (3) and/or transmitted by the control computer (44) to the videotex center (1).
Claim 6
Dependent Claim
43 words
A videotex system as claimed in any one of the preceding claims, characterized in that the terminal (3) includes a secured switching device (50) which permits the information and control characters and/or the operating parameters to be fetched from the operating facility (16).
Claim 7
Dependent Claim
42 words
A videotex system as claimed in claim 5, characterized in that the information and control characters and/or the operating parameters are fetched from the operating facility (16) by the controller (36) of the terminal (3) whenever the supply voltage is turned on.
References Cited (Backward Citations)
No citation records indexed.
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