US3612844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data transmission system
Assignee: Olivetti SpA
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Filing: 1969-07-02
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Granted: 1971-10-12
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Expires: 1989-07-02
Abstract
Abstract A terminal apparatus is described for a data transmission system which transmits messages constituted by a series of characters. The terminal apparatus includes means for checking the entering of messages for determining when errors occur in the manual entry of information. The terminal apparatus includes a manually operated means for entering characters, and a presettable means for indicating the position within the series of characters of a predetermined character which is to appear in a particular message format. A given message format may be selected from a number of message formats. A checking means is provided to determine if the predetermined character is entered in the proper position within a series of characters, and if not, an error signal is generated which indicates the absence of the predetermined character from the position in question.
Inventors
- 👤 Giovanni Zaffignani
- 👤 Bruno Brunialti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:27
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/0703; G06F11/0751; G06F11/0763; H; H04; H04L; H04L1/00; H04L1/004; H04L1/0056; H04L1/0061; H04L1/0063
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
135 words
Terminal apparatus for a data transmission system which transmits messages constituted by a series of characters at least between a terminal and a central processor, comprising: manually operable means for entering said characters into said terminal apparatus, presettable means for defining message formats including means for generating a signal indicative of the position in said series of characters at which predetermined characters are to appear in each said message format, selecting means for selecting a predetermined one of said message formats, checking means jointly controlled by Said presettable means and said selecting means for checking whether each one of said predetermined characters has been entered in said positions, and error-signalling means controlled by said checking means for generating a signal indicative of the absence of a predetermined character from at least one of said positions.
Claim 2
Dependent Claim
135 words
Terminal apparatus for a data transmission system which transmits messages constituted by a series of characters at least between a terminal and a central processor, comprising: manually operable means for entering said characters into said terminal apparatus, presettable means for defining message formats including means for generating a signal indicative of the position in said series of characters at which predetermined characters are to appear in each said message format, selecting means for selecting a predetermined one of said message formats, checking means jointly controlled by Said presettable means and said selecting means for checking whether each one of said predetermined characters has been entered in said positions, and error-signalling means controlled by said checking means for generating a signal indicative of the absence of a predetermined character from at least one of said positions.
Claim 3
Dependent Claim
85 words
Terminal apparatus according to claim 1, wherein the presettable means comprises a counter arranged to be reset in response to a signal indicative of a second predetermined character and then to count the number of characters entered, means settable to respond to predetermined states of the counter to provide a first signal, the checking means being arranged to provide a second signal whenever the first predetermined character is entered by the manually operable means and to check for coincidence between the first and second signals.
Claim 4
Dependent Claim
119 words
Terminal apparatus according to claim 2 wherein said selecting means comprises a plurality of manually operable members each one operable for selecting a corresponding format, each one of said members when operated causing said checking means to be controlled by said settable means according to the associated group of positions, said settable means comprising: a series of first terminals which are energized in turn as the counter counts through its states, different groups of said first terminals being connected by interchangeable connections to each of a series of second terminals which correspond to the different formats, respectively, and means for connecting that one of said second terminals to the checking means which corresponds to the selected manually operable member.
Claim 5
Dependent Claim
29 words
Terminal apparatus according to claim 3 wherein operation of a manually operable member operates a means for causing the apparatus also to transmit a code identifying the selected format.
Claim 6
Dependent Claim
90 words
Terminal apparatus according to claim 3 further comprising a remote apparatus in communication with said terminal apparatus, the latter apparatus comprising a keyboard including a group of keys which constitute the said manually operable members and means for selectively blocking keys, and a control unit responsive to a first code from the remote apparatus to operate the blocking means to block all keys other than the said group and further responsive to operation of one of the said group of keys to operate the blocking means to unblock all keys.
Claim 7
Dependent Claim
46 words
Terminal apparatus according to claim 5, wherein the control unit is further responsive to an error signal from the checking means to operate the blocking means to block all keys for a predetermined interval of time and then to unblock only the said group of keys.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |