US4857889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-crystal indicator control system
Assignee: Mazda Motor Corp
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Filing: 1988-08-01
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Granted: 1989-08-15
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Expires: 2008-08-01
Abstract
Abstract A liquid-crystal indicator control system for displaying at least two different informations alternatively at predetermined times that includes a temperature detector for detecting the ambient temperature relative to the liquid-crystal indicator. The ambient temperature is compared to a predetermined value and a signal is output when the temperature is less than the predetermined value. Display time is changed from a given predetermined time responsive to the signal indicative of ambient temperature being less than the predetermined value.
Inventors
- 👤 Takashi Terano
- 👤 Masayuki Jinno
- 👤 Munetoshi Saijo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:28
CPC Classifications
B; B60; B60R; B60R16/00; B60R16/02; B60R16/023; B60R16/0231; B60R16/0232
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
A vehicle having a liquid-crystal indicator control system for display of at least two different information alternatively, for predetermined times comprising; (a) a vehicle (b) a liquid-crystal indicator for mounting in said vehicle, and (c) a control system therefore comprising (i) a temperature detecting means for detecting ambient temperature relative to said liquid-crystal indicator, (ii) a comparator means for comparing said detected ambient temperature with a predetermined temperature value, (iii) output means for outputing a signal when said detected ambient temperature is less than said predetermined temperature, and (iv) display time changing means for changing the predetermined time of display responsive to said output signal.
Claim 2
Dependent Claim
105 words
A vehicle having a liquid-crystal indicator control system for display of at least two different information alternatively, for predetermined times comprising; (a) a vehicle (b) a liquid-crystal indicator for mounting in said vehicle, and (c) a control system therefore comprising (i) a temperature detecting means for detecting ambient temperature relative to said liquid-crystal indicator, (ii) a comparator means for comparing said detected ambient temperature with a predetermined temperature value, (iii) output means for outputing a signal when said detected ambient temperature is less than said predetermined temperature, and (iv) display time changing means for changing the predetermined time of display responsive to said output signal.
Claim 3
Dependent Claim
27 words
A liquid-crystal indicator control system as defined in claim 1, wherein said indicator is mounted in the vehicle to be viewed by passengers riding in the vehicle.
Claim 4
Dependent Claim
23 words
A liquid-crystal indicator control system as defined in claim 2, wherein said temperature detecting means is mounted in the front of said vehicle.
Claim 5
Dependent Claim
35 words
A liquid-crystal indicator control system as defined in claim 3, wherein numerical data indicative of said temperature and a character showing a road condition determined by said temperature are displayed alternatively on said liquid-crystal indicator.
Claim 6
Dependent Claim
25 words
A liquid-crystal indicator control system as defined in claim 4, wherein said display time changing means is actuated just after the vehicle engine is started.
Claim 7
Dependent Claim
30 words
A liquid-crystal indicator, control system as defined in claim 4, wherein said display time changing means is not actuated until a predetermined period lapses after the vehicle engine is started.
Claim 8
Dependent Claim
48 words
A liquid-crystal indicator control system as defined in claim 3, further comprising a vehicle detecting means for detecting the speed of the vehicle and means for blocking the comparison of the ambient temperature and the predetermined temperature value until said vehicle speed is greater than a predetermined value.
Claim 9
Dependent Claim
73 words
A liquid-crystal indicator control system as defined in claim 3, wherein numerical date indicative of said temperature and a character showing a road condition determined by said temperature are displayed alternatively for predetermined times on said liquid-crystal indicator when said temperature is less than a first predetermined value, and said predetermined time is set shorter when said temperature is less than a second predetermined value which is smaller than said first predetermined value.
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) | 1992-08-14 | 1993-02-13 | 1993-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-14 | 1997-02-13 | 1997-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-14 | 2001-02-13 | 2001-08-15 | $7700.00 | Window Closed / Lapsed |