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US4808841A
Expired / Lapsed
US
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Centralized control system for home electric appliances
Assignee: Hitachi Ltd
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Filing: 1987-11-12
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Granted: 1989-02-28
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Expires: 2007-11-12
Abstract
Abstract Disclosed is a centralized home appliances simultaneous control system consisting of controller(s) and terminal units associated with home electric appliances. Setting of batch control is done in a centralized manner on the controller(s) and it is stored in the memory provided in the controller(s), instead of being done on the individual terminal units. The settings stored in the controller's memory are sent via a communication medium to the memory in each terminal unit, and the setup status of each terminal unit is sent back to the controller(s) for the purpose of monitoring with reference to the contents of the controller's memory. A batch control command signal is issued from the controller(s) to the terminal units, which then responds to control the operation of the associated electric appliances in accordance to the batch control plan corresponding to the command held in the memory of the terminal units.
Inventors
- 👤 Yukihiro Ito
- 👤 Takeshi Imaizumi
- 👤 Tadayuki Tukahara
- 👤 Yoshimi Miyamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:12
CPC Classifications
H; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1313; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/042; G05B19/0426; H02J13/1321; H02J13/1323; H02J13/14; G05B2219/00; G05B2219/20; G05B2219/21; G05B2219/21105; G05B2219/23; G05B2219/23051; G05B2219/23191; G05B2219/24; G05B2219/24048; H02J2105/00; H02J2105/10; H02J2105/12; Y; Y02; Y02B; Y02B70/00; Y02B70/30; Y02B90/00; Y02B90/20; Y04; Y04S; Y04S20/00; Y04S20/20; Y04S40/00; Y04S40/12; Y04S40/121; Y04S40/124
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
219 words
A centralized control system for home electric appliances comprising: a controller for implementing centralized simultaneous control and monitoring of the operation of a plurality of electric appliances; and a plurality of terminal units linked to said controller through a communication medium for directly controlling operation of said electric appliances; wherein said controller includes setting means for setting a designation of electric appliances to be simultaneously controlled and for setting control plans for said simultaneously controlled electric appliances, first memory means for storing set values set by said setting means, command means for entering a simultaneous control command, and first transmission means for sending a signal including said set values and/or said simultaneous control command to terminal units corresponding to said simultaneously controlled electric appliances; and wherein each terminal unit includes first reception means for receiving said signal from said controller and for analyzing said signal, second memory means for storing set values if said signal represents set values, and for storing a control plan which controls operation of a simultaneously controlled electric appliance, and control means for referring to said second memory means to obtain a control plan corresponding to said simultaneous control command and for controlling the operation of said simultaneously controlled electric appliance in accordance with said control plan if said signal represents a simultaneous control command.
Claim 2
Dependent Claim
219 words
A centralized control system for home electric appliances comprising: a controller for implementing centralized simultaneous control and monitoring of the operation of a plurality of electric appliances; and a plurality of terminal units linked to said controller through a communication medium for directly controlling operation of said electric appliances; wherein said controller includes setting means for setting a designation of electric appliances to be simultaneously controlled and for setting control plans for said simultaneously controlled electric appliances, first memory means for storing set values set by said setting means, command means for entering a simultaneous control command, and first transmission means for sending a signal including said set values and/or said simultaneous control command to terminal units corresponding to said simultaneously controlled electric appliances; and wherein each terminal unit includes first reception means for receiving said signal from said controller and for analyzing said signal, second memory means for storing set values if said signal represents set values, and for storing a control plan which controls operation of a simultaneously controlled electric appliance, and control means for referring to said second memory means to obtain a control plan corresponding to said simultaneous control command and for controlling the operation of said simultaneously controlled electric appliance in accordance with said control plan if said signal represents a simultaneous control command.
Claim 3
Dependent Claim
115 words
A control system according to claim 1, wherein said controller further comprises: second reception means for receiving signals from said terminal units indicative of the states of said terminal units, and monitoring display means for displaying an indication of the states of said terminal units in accordance with said signals received by said second reception means; and wherein each terminal unit further comprises monitoring means for monitoring the operational state of a simultaneously controlled electric appliance associated with said terminal unit, and second transmission means which, when the operational state of said appliance has changed, sends a signal indicative of the change in the operational state of said simultaneously controlled electric appliance to said controller.
Claim 4
Dependent Claim
16 words
A control system according to claim 1, wherein said first memory means comprises a non-volatile memory.
Claim 5
Dependent Claim
16 words
A control system according to claim 1, wherein said second memory means comprises a non-volatile memory.
Claim 6
Dependent Claim
16 words
A control system according to claim 2, wherein said first memory means comprises a non-volatile memory.
Claim 7
Dependent Claim
16 words
A control system according to claim 2, wherein said second memory means comprises a non-volatile memory.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |