Patent US5236477A successfully refreshed from Google Patents.
US5236477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microcomputer-based control device
Assignee: Toshiba Corp
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Filing: 1992-10-23
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Granted: 1993-08-17
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Expires: 2012-10-23
Abstract
Abstract A microcomputer-based control device for an air conditioner to which a replaceable air filter is attached includes a DC power supply section for converting an AC voltage to a DC voltage, an air-conditioning control unit connected to the DC power supply and including a microcomputer, a control unit resetting circuit for delivering an initial reset signal to the control unit when a voltage to be supplied to the control unit from the DC power supply section has risen to a value at which the control unit is operable, an operation section connected to the air-conditioning control unit for setting an operating condition of the control unit, a non-volatile memory connected to the control unit so that data of a cumulative air-conditioning operation time period stored in the control unit is written into and read out of the non-volatile memory, a display for displaying an image indicative of a replacing time of the air filter when the cumulated airconditioning operation time period has reached a predetermined time period, and a voltage drop detector connected between the control unit and the DC power supply section for detecting the output voltage of the DC power supply section dropped to a predetermined level or below to deliver a data write command signal to the control unit so that it is operated in response to the data write command signal to write the data into the non-volatile memory.
Inventors
- 👤 Tadaaki Koketsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:02
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/42; B01D46/44; B01D46/46; F; F24; F24F; F24F11/00; F24F11/30; F24F11/32; F24F11/39; F24F11/50; F24F11/52; F24F11/62; F24F11/63; F24F11/64; F24F11/70; F24F11/72; F24F11/74; F24F11/77; F24F11/88; F24F2140/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
216 words
A microcomputer-based control device comprising: a) a DC power supply section connected to an AC power supply section for converting an AC voltage from the AC power supply section to a DC voltage; b) a control unit connected to the DC power supply and including a microcomputer; c) a control unit resetting circuit provided between the control unit and the DC power supply for delivering an initial reset signal to the control unit when a voltage to be supplied to the control unit from the DC power supply section has risen to a value at which the control unit is operable; d) an operation section connected to the control unit for setting an operating condition of the control unit; e) a non-volatile memory connected to the control unit so that data stored in the control unit is written into and read out of the non-volatile memory; and f) voltage drop detecting means provided between the control unit and the DC power supply section for detecting the output voltage of the DC power supply section dropped to a predetermined level or below to thereby deliver a data write command signal to the control unit so that the control unit is operated in response to the data write command signal to write the data into the non-volatile memory.
Claim 2
Dependent Claim
216 words
A microcomputer-based control device comprising: a) a DC power supply section connected to an AC power supply section for converting an AC voltage from the AC power supply section to a DC voltage; b) a control unit connected to the DC power supply and including a microcomputer; c) a control unit resetting circuit provided between the control unit and the DC power supply for delivering an initial reset signal to the control unit when a voltage to be supplied to the control unit from the DC power supply section has risen to a value at which the control unit is operable; d) an operation section connected to the control unit for setting an operating condition of the control unit; e) a non-volatile memory connected to the control unit so that data stored in the control unit is written into and read out of the non-volatile memory; and f) voltage drop detecting means provided between the control unit and the DC power supply section for detecting the output voltage of the DC power supply section dropped to a predetermined level or below to thereby deliver a data write command signal to the control unit so that the control unit is operated in response to the data write command signal to write the data into the non-volatile memory.
Claim 3
Dependent Claim
292 words
A microcomputer-based control device incorporated in an air conditioning equipment to which a replaceable air filter is attached, the device comprising: a) a DC power supply section connected to an AC power supply section for converting an AC voltage from the AC power supply section to a DC voltage; b) an air-conditioning control unit connected to the DC power supply and including a microcomputer; c) a control unit resetting circuit provided between the air-conditioning control unit and the DC power supply for delivering an initial reset signal to the air-conditioning control unit when a voltage to be supplied to the air-conditioning control unit from the DC power supply section has risen to a value at which the control unit is operable; d) an operation section connected to the air-conditioning control unit for setting an operating condition of the control unit; e) a non-volatile memory connected to the air-conditioning control unit so that data of a cumulative air conditioning operation time period stored in the air-conditioning control unit is written into and read out of the non-volatile memory; f) display means provided in the air-conditioning control unit for cumulating an air-conditioning operation time period and displaying an image indicative of a replacing time of the air filter when the cumulated air-conditioning operation time period has reached a predetermined time period; and g) voltage drop detecting means provided between the air-conditioning control unit and the DC power supply section for detecting the output voltage of the DC power supply section dropped to a predetermined level or below to thereby deliver a data write command signal to the air-conditioning control unit so that the air-conditioning control unit is operated in response to the data write command signal to write the data into the non-volatile memory.
Claim 4
Dependent Claim
292 words
A microcomputer-based control device incorporated in an air conditioning equipment to which a replaceable air filter is attached, the device comprising: a) a DC power supply section connected to an AC power supply section for converting an AC voltage from the AC power supply section to a DC voltage; b) an air-conditioning control unit connected to the DC power supply and including a microcomputer; c) a control unit resetting circuit provided between the air-conditioning control unit and the DC power supply for delivering an initial reset signal to the air-conditioning control unit when a voltage to be supplied to the air-conditioning control unit from the DC power supply section has risen to a value at which the control unit is operable; d) an operation section connected to the air-conditioning control unit for setting an operating condition of the control unit; e) a non-volatile memory connected to the air-conditioning control unit so that data of a cumulative air conditioning operation time period stored in the air-conditioning control unit is written into and read out of the non-volatile memory; f) display means provided in the air-conditioning control unit for cumulating an air-conditioning operation time period and displaying an image indicative of a replacing time of the air filter when the cumulated air-conditioning operation time period has reached a predetermined time period; and g) voltage drop detecting means provided between the air-conditioning control unit and the DC power supply section for detecting the output voltage of the DC power supply section dropped to a predetermined level or below to thereby deliver a data write command signal to the air-conditioning control unit so that the air-conditioning control unit is operated in response to the data write command signal to write the data into the non-volatile memory.
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) | 1996-08-16 | 1997-02-15 | 1997-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-16 | 2001-02-15 | 2001-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-16 | 2005-02-15 | 2005-08-17 | $7700.00 | Window Closed / Lapsed |