US3789362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating system with luminous elements
Assignee: Blaupunkt Werke GmbH
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Filing: 1972-05-10
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Granted: 1974-01-29
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Expires: 1992-05-10
Abstract
Abstract To control luminous elements, such as small lamps to indicate the received frequency on a scale of a communication receiver, by means of miniaturized electronic circuits without mechanically movable switches, the lamps are connected in a series circuit across a source of supply. Solid state switches are connected to the junctions of the lamps in the series circuit, and having two states, the switches being so controlled that all switches preceding one which is connected to one source terminal are likewise connected to that one source terminal and all switches subsequent to the one which is connected to the one source terminal are connected to the other source terminal, so that only a single lamp will light.
Inventors
- 👤 H Prolss
- 👤 W Hegeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:53
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/40; G01R13/404; G01R13/405; G01R13/406; H; H03; H03J; H03J1/00; H03J1/02; H03J1/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
197 words
Indicating system having indicator elements (L) adapted for connection to a two terminal source of power to energize the elements (10,100; 11, 101) comprising a series circuit including the indicating elements (L1 .L2 . . .. .Ln) and the source, said indicating elements being connected in series relation, and said series connected indicating elements being connected between said two terminal source so that one terminal of the first indicating element (L1) is connected to a first source terminal and the other terminal of the last indicating elEment in the series circuit (L10;Ln) is connected to the other source terminal; switches (S, S1, S2. . .. S9) having a change-over terminal (12) connected to the junction between adjacent indicating elements (L) and two fixed terminals (13, 14) connected to the two resepective terminals (10, 100; 11, 101) of the source; and means logically interconnecting the switches to a. connect all switches preceding a switch which is connected to one source terminal (10, 100), to said one source terminal (10, 100); and b. to connect all switches subsequent to the said switch which is connected to said one source terminal (10, 100), to the other source terminal (11, 101).
Claim 2
Dependent Claim
197 words
Indicating system having indicator elements (L) adapted for connection to a two terminal source of power to energize the elements (10,100; 11, 101) comprising a series circuit including the indicating elements (L1 .L2 . . .. .Ln) and the source, said indicating elements being connected in series relation, and said series connected indicating elements being connected between said two terminal source so that one terminal of the first indicating element (L1) is connected to a first source terminal and the other terminal of the last indicating elEment in the series circuit (L10;Ln) is connected to the other source terminal; switches (S, S1, S2. . .. S9) having a change-over terminal (12) connected to the junction between adjacent indicating elements (L) and two fixed terminals (13, 14) connected to the two resepective terminals (10, 100; 11, 101) of the source; and means logically interconnecting the switches to a. connect all switches preceding a switch which is connected to one source terminal (10, 100), to said one source terminal (10, 100); and b. to connect all switches subsequent to the said switch which is connected to said one source terminal (10, 100), to the other source terminal (11, 101).
Claim 3
Dependent Claim
32 words
System according to claim 1, wherein the switches comprise a pair of compatible transistors (31, 32) and means including additional transistors (33, 34) interconnecting said transistors to form a bistable flip-flop circuit.
Claim 4
Dependent Claim
24 words
System according to claim 2, wherein the interconnection means comprises a control circuit (29) including a differential amplifier (45, 46) to control the switches.
Claim 5
Dependent Claim
17 words
System according to claim 1, wherein the switches comprise digitally operating elements (60, 61, 70, 71, 72).
Claim 6
Dependent Claim
15 words
System according to claim 4, wherein the switches comprise an interconnected OR-gate and an AND-gate.
Claim 7
Dependent Claim
17 words
System according to claim 4, wherein the switches comprise interconnected NOR-gates (70, 71) and an interter (72).
Claim 8
Dependent Claim
38 words
System according to claim 4, wherein the digital interconnection of the switches is in accordance with the relationship A C . D (A'''' & E) D (B & E) D (A'''' & E) A'' or an equivalent relationship.
Claim 9
Dependent Claim
12 words
System according to claim 1, wherein the indicating elements are luminous elements.
Claim 10
Dependent Claim
17 words
System according to claim 1, wherein the switches and the logic interconnection means comprise integrated circuit means.
Claim 11
Dependent Claim
114 words
System according to claim 1, further comprising a control circuit (29) providing an output of varying voltage, the voltage level determining the number of switches which are to change state; each one of said switches contain circuit element means (41, 35; 41, 36; 63, 62; 74, 73) having respective values characteristic of the specific switch and responsive to a specific voltage level to permit change-over of the state of a specific switch, upon a specific voltage level being supplied by said control means, the logical interconnecting means interconnecting and switching with respect to the specific switch, preceding and subsequent switches to connect said preceding and subsequent switches with the respective terminals of the source.
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |