US5027432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor vehicle radio with an automatic volume control device
Assignee: Delphi Technologies Inc
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Filing: 1989-05-10
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Granted: 1991-06-25
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Expires: 2009-05-10
Abstract
Abstract The invention relates to a motor vehicle radio with an automatic volume control device (20) and a manual volume-setting device (14). The automatic volume control device (20) is fed with a speed signal detected by a speed sensor and delivers a volume signal associated with the detected speed signal. The manual volume-setting device (14) generates a volume signal corresponding to the volume which has been set. A two-position switch (16) is provided for selectively applying the volume signal from the automatic volume control device (20) or from the manual volume-setting device (14) to an output stage (12) which feeds the loudspeakers (13). When the manual volume-setting device (14) is switched on, following a detection signal for a desired vehicle speed, the volume signal corresponding to the volume which has been set can be stored in a storage and control circuit (23) of the automatic volume control device (20).
Inventors
- 👤 Otto Skala
- 👤 Walter Rauth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:33
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/32; H03G3/02; H03G3/04; H03G3/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
A motor vehicle radio with an automatic volume control device, to which is fed a speed signal detected by a speed sensor and which delivers a volume signal associated with the detected speed signal, and with a manual volume-setting device which generates a volume signal corresponding to the volume which has been set, characterized by the fact that a two-position switch (16) is provided for selectively transmitting the volume signal of the automatic volume control device (20) or of the manual volume-setting device (14) to an output stage (12) of the radio (10) which feeds loudspeakers (13); and a storage and control circuit (23) which includes a memory in which the volume signal corresponding to the adjusted volume can be stored when the manual volume-setting device (14) is switched on following a detection signal for a desired vehicle speed.
Claim 2
Dependent Claim
139 words
A motor vehicle radio with an automatic volume control device, to which is fed a speed signal detected by a speed sensor and which delivers a volume signal associated with the detected speed signal, and with a manual volume-setting device which generates a volume signal corresponding to the volume which has been set, characterized by the fact that a two-position switch (16) is provided for selectively transmitting the volume signal of the automatic volume control device (20) or of the manual volume-setting device (14) to an output stage (12) of the radio (10) which feeds loudspeakers (13); and a storage and control circuit (23) which includes a memory in which the volume signal corresponding to the adjusted volume can be stored when the manual volume-setting device (14) is switched on following a detection signal for a desired vehicle speed.
Claim 3
Dependent Claim
40 words
The motor vehicle radio in accordance with claim 1, characterized by the fact that the volume signal of the manual volume-setting device (14) can be applied to the automatic volume control device (20) by means of a momentary-contact switch (18).
Claim 4
Dependent Claim
47 words
The motor vehicle radio in accordance with claim 2, characterized by the fact that the volume signal of the manual volume-setting device (14) can be applied to the storage and control circuit (23) of the automatic volume control device (20) by means of an analog-to-digital converter (25).
Claim 5
Dependent Claim
30 words
The motor vehicle radio in accordance with claim 3, characterized by the fact that the volume signal applied to the storage and control circuit (23) serves as the detection signal.
Claim 6
Dependent Claim
51 words
The motor vehicle radio in accordance with claim 1 characterized by the fact that the volume signal supplied by the storage and control circuit (23) as a function of the speed signal (V) is applied to the two-position switch (16) as a voltage signal by means of a digital-to-analog converter (26).
Claim 7
Dependent Claim
35 words
The motor vehicle radio in accordance with claim 5 characterized by the fact that the memory of the storage and control circuit (23) is a write/read memory, the content of whose memory can be overwritten.
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) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |