US4665536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Programmable automatic power-off system for a digital terminal
Assignee: Unisys Corp
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Filing: 1986-03-10
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Granted: 1987-05-12
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Expires: 2006-03-10
Abstract
Abstract A programmable unit for attachment to a work-station whereby power to the work-station will be shut off after a pre-set time-period, unless work-station activity occurs before the outset of the time-period, when the pre-set time-period will initiate again.
Inventors
- 👤 Dongsung R. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/26; G06F1/32; G06F1/3203; G06F1/3206; G06F1/3228
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
101 words
An apparatus for effectuating power turn-off to a work station terminal after a programmatically preset time period, comprising in combination: (a) means for receiving coded timing data from said terminal and providing data and control signals to a timing means; (b) said timing means for clocking off said coded timing data and generating a time-out signal when the time period represented by said coded timing data has run out; (c) power control means for controlling the supply of power to said terminal, said power controlling means including: (c1) means to turn off power to said terminal upon receiving said time-out signal.
Claim 2
Independent Claim
101 words
An apparatus for effectuating power turn-off to a work station terminal after a programmatically preset time period, comprising in combination: (a) means for receiving coded timing data from said terminal and providing data and control signals to a timing means; (b) said timing means for clocking off said coded timing data and generating a time-out signal when the time period represented by said coded timing data has run out; (c) power control means for controlling the supply of power to said terminal, said power controlling means including: (c1) means to turn off power to said terminal upon receiving said time-out signal.
Claim 3
Dependent Claim
50 words
The apparatus of claim 1 wherein said means for receiving includes: (a) decoding means for translating output data from said terminal into a coded time parameter; (b) control logic means for generating control signals for said timing means; (c) said coded time parameter being operator-generated from said work station terminal.
Claim 4
Dependent Claim
89 words
The apparatus of claim 2 wherein said timing means includes: (a) internal clock means for generating clock signals for measuring the passage of time; and clocking a register means and counter means; (b) said register means for holding said coded time parameter; (c) said counter means for counting clocks until the count indicates the time period set in said register means, and including: (c1) means to generate a time-out signal for transmittal to a gating means; (d) gating means for generating a power-off signal to said power control means.
Claim 5
Dependent Claim
41 words
The apparatus of claim 3 wherein said control logic means includes: (a) means to enable said counter means to count said clock signals from said internal clock means; (b) means to enable said register means to receive said coded time parameter.
Claim 6
Dependent Claim
28 words
The apparatus of claim 4 wherein said gating means includes: (a) means for enabling or disabling said time out signal to/from being transferred to said power control means.
Claim 7
Dependent Claim
70 words
The apparatus of claim 5 wherein said gating means includes: (a) an AND gate having first and second inputs, and including: (a1) a power-off output line to said power control means (a2) said first input for receiving an enable/disable signal from a timer enable flip-flop; (a3) said second input for receiving said time-out signal; and (b) said timer enable flip-flop for temporarily disabling said gating means during start-up of power-on.
Claim 8
Dependent Claim
30 words
The apparatus of claim 5 which includes: (a) means to inhibit said gating means from generating a power-off signal during the initial turn on of power to the said terminal.
Claim 9
Dependent Claim
41 words
The apparatus of claim 7 wherein said means to inhibit includes: (a) a timer enable flag flip-flop, connected to said control logic means, and operating to prevent activation of said AND gate during initial turn-on of power to the said apparatus.
Claim 10
Dependent Claim
31 words
The apparatus of claim 7 wherein said power control means includes: (a) manual activation means for controlling the on-off condition of power to said terminal and to said power turn-off apparatus.
Claim 11
Dependent Claim
19 words
The apparatus of claim 9 which includes: (a) means to cancel-out a set time-out period which has been running.
Claim 12
Dependent Claim
30 words
The apparatus of claim 9 which includes: (a) means to sense any sending/receiving activity by said terminal; (b) means, responsive to said sensing means, for re-initiating a new time-out period.
Claim 13
Independent Claim
129 words
An apparatus for automatic power turn-off of a work station terminal comprising: (a) a digital terminal having keyboard means for transmitting instructions and data to said apparatus; (b) register means, responsive to said keyboard means, for setting a coded number representing a selected time period; (c) counter means, connected to said register means, for providing a time-out signal to a gating means; (d) power control relay means connected to supply power to said digital terminal and connected to receive a control signal from said gating means; (e) control logic means for controlling said register means and said counter means; (f) gating means for providing a power-off signal to said power control relay means, said gating means including: (f1) inhibiting signal input means to prevent said power-off signal from activation.
Claim 14
Independent Claim
129 words
An apparatus for automatic power turn-off of a work station terminal comprising: (a) a digital terminal having keyboard means for transmitting instructions and data to said apparatus; (b) register means, responsive to said keyboard means, for setting a coded number representing a selected time period; (c) counter means, connected to said register means, for providing a time-out signal to a gating means; (d) power control relay means connected to supply power to said digital terminal and connected to receive a control signal from said gating means; (e) control logic means for controlling said register means and said counter means; (f) gating means for providing a power-off signal to said power control relay means, said gating means including: (f1) inhibiting signal input means to prevent said power-off signal from activation.
Claim 15
Dependent Claim
27 words
The apparatus of claim 12 which includes: (a) flag flip-flop means, responsive to said control logic means to temporarily inhibit said gating means during initial power turn-on.
Claim 16
Dependent Claim
33 words
The apparatus of claim 12 wherein said power control relay means includes: (a) manual operating means for manual control of the power on/power off condition to said work station terminal and said apparatus.
References Cited (Backward Citations)
US3955185A
Cited
US3941989A
Cited
US4049952A
Cited
US4381552A
Cited
US4419917A
Cited
US4409665A
Cited
US4463646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |