Patent US3015303A successfully refreshed from Google Patents.
Patent US3861393A successfully refreshed from Google Patents.
EP0556701A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improved teletext transmission receiver with simplified selection
Assignee: Edico SRL
•
Filing: 1993-02-10
•
Granted: —
•
Expires: 2013-02-10
Abstract
Abstract The present invention relates to a receiver of teletext transmissions, under form of a plurality of numbered pages, inserted in the television signal, comprising means for receiving and demodulating the television signal, also decoding means for also obtaining the associated teletext signal and selection means for selecting a chosen page from those transmitted, and memory means for memorising at least one chosen teletext page, the main characteristic of the invention consits in that the receiver includes additional means that allow for selecting from the contents of a determined page numbers of one or more other pages and memorise them, for facilitating the selection and/or the memorisation. <IMAGE>
Inventors
- 👤 Federico D'errico
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 03:14
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/08; H04N7/087; H04N7/088; H04N7/0882
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
98 words
Receiver of teletext transmissions, under form of a plurality of pages, inserted in the television signal, comprising means for receiving and demodulating the television signal, and also decoding means (12,13) for also obtaining the associated teletext signal and selection means for selecting a chosen page from those transmitted, and memory means (14) for memorising at least one chosen teletext page, characterised in that the receiver includes additional means (16) that allow for selecting from the contents of a determined page (100) numbers of one or more other pages and memorise them, for facilitating the selection and/or the memorisation.
Claim 2
Dependent Claim
55 words
Receiver of teletext transmissions, according to claim 1, characterised in that said additional means (16) for identifying the numbers of the other pages contained in the text of said determined page (100) follow the method of considering page numbers all the groups of three consecutive figures that make up numbers comprised from 000 to 899.
Claim 3
Dependent Claim
90 words
Receiver of teletext transmissions, according to claim 2, characterised in that it comprises circuitry means for displaying a characteristic element (cursor) on the displayed page, and first and second command means (arrow key) for moving said characteristic element from one page number to another contained in the text of said displayed page and identified with the said method, said additional means (16) containing logic circuitry components for directly passing said characteristic element from a following or previous number, according to the activation of said first or second command means respectively.
Claim 4
Dependent Claim
30 words
Receiver of teletext transmissions, according to claim 3, characterised in that it comprises further command means for confirming the selection made by way of said first or second command means.
Claim 5
Dependent Claim
37 words
Receiver of teletext transmissions, according to one or more of the previous claims, characterised in that said decoding means (12,13) comprise a plurality of acquisitors and allow for the simultaneous acquisition of at least 4 teletext pages.
Claim 6
Dependent Claim
29 words
Receiver of teletext transmissions, according to one or more of the previous claims, characterised in that said memory means (14) are able to contain at least 16 teletext pages.
Claim 7
Dependent Claim
36 words
Receiver of teletext transmissions, according to one or more of the previous claims, characterised in that it is provided to acquire and memorise the general index page (100) as soon as a TV channel is selected.
Claim 8
Dependent Claim
32 words
Receiver of teletext transmissions, according to one or more of the previous claims, characterised in that it is provided to clean said page memory (14) each time the TV channel is changed.
Claim 9
Dependent Claim
71 words
Receiver of teletext transmissions, according to one or more of the previous claims, characterised in that as soon a teletext page is requested by the user, it is provided to verify whether said page is present in said page memory (14), in that said additional means (16) provide for maintaining and updating in a read and write memory (20) a table of all the pages memorised in the page memory (14).
Claim 10
Dependent Claim
50 words
Receiver of teletext transmissions, according to claim 9, characterised in that in the positive case said requested page is displayed, whilst in the negative case it is controlled as to whether it is being acquired, and, if even this eventuality is not verified, the acquisition and successive display is ordered.
Claim 11
Dependent Claim
53 words
Receiver of teletext transmissions, according to claim 10, characterised in that said additional means (16) provide to identify all the three digit numbers comprised from 000 to 899 contained in the text of the displayed page, and also provides to acquire the relative teletext pages and to memorise them in said memory (14).
Claim 12
Dependent Claim
57 words
Receiver of teletext transmissions, according to claim 11, characterised in that said additional means (16) provide to sign in the table contained in said read and write memory (20) the displayed and analysed page and with a first flag value in case that the page numbers contained in it are at least equal to a predetermined value.
Claim 13
Dependent Claim
53 words
Receiver of teletext transmissions, according to claim 12, characterised in that, when said page memory (14) is full and there are still pages to be memorised, said additional means (16) provide to over write one of the old pages contained in said memory, starting from those not signed with said first flag value.
Claim 14
Dependent Claim
25 words
Receiver of teletext transmissions, according to one or more of the previous claims, characterised in that said additional means comprise a central control unit (CPU).
Claim 15
Dependent Claim
37 words
Receiver of teletext transmissions, according to claim 14, characterised in that said central control unit (CPU) is realised with the programed logic technique and is coupled to a fixed memory (19) containing a series of operative instructions.
Claim 16
Dependent Claim
25 words
Receiver of teletext transmissions, according to claim 5, characterised in that one of said acquisitors is permanently dedicated to the updating of the page dislayed.
Claim 17
Dependent Claim
55 words
Receiver of teletext transmissions, according to claim 12, characterised in that said additional means (16) provide to sign in the table contained in said read and write memory (20) the displayed and analysed page and with a second flag value in case that the page numbers contained in it are less than said predetermined value.
Claim 18
Dependent Claim
68 words
Receiver of teletext transmissions, according to claim 17, characterised in that, when said page memory (14) is full and there are still pages to be memorised, said additional means (16) provide to over write one of the old pages contained in said memory, starting from those not signed with said second flag value, and successively overwriting those without a flag and finally those with said first flag value.
Claim 19
Dependent Claim
82 words
Receiver of teletext transmissions, according to claim 9, characterised in that said additional means (16) provide for identifying all the three digit numbers comprised from 000 to 899 contained in the text of all the pages memorised in said page memory (14) and provide to sign in the table in said read and write memory (20) the page analysed with a first flag value in the case that the page numbers contained in it are at least equal to a predetermined number.
Claim 20
Dependent Claim
20 words
Receiver of teletext transmissions, according to claim 12 or 17 or 19, characterised in that said predetermined number is 5.
Claim 21
Dependent Claim
72 words
Receiver of teletext transmissions, according to claim 11, characterised in that in the acquisition operation of each of the teletext pages corresponding to the three figure numbers comprised from 000 to 899 contained in the text of the analysed page is established a time-out, that is to say a maximum time for searching the page is established, after which the page is considered inexistent and the search of such page is abbandoned.
Claim 22
Dependent Claim
20 words
Receiver of teletext transmissions, according to claim 21, characterised in that the value of said time-out time is one minute.
Claim 23
Dependent Claim
44 words
Receiver of teletext transmissions, according to claim 5, characterised in that said acquisitors comprised in said decoder means (12,13), when not used for acquiring new teletext pages, are rotationally destined to the refreshment of the teletext pages already memorised in said multipage memory (14).
Claim 24
Dependent Claim
33 words
Receiver of teletext transmissions, according to claim 5, characterised in that one of said acquisitors comprised in said decoder means (12,13), is reserved for the acquisition of the following page to that displayed.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.