US3670113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video transducer head alignment apparatus
Assignee: Blaupunkt Werke GmbH
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Filing: 1970-10-08
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Granted: 1972-06-13
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Expires: 1990-10-08
Abstract
Abstract To align transducer heads on a rotating carrier, so that the gap extends exactly radially and is properly placed on the carrier, a drum-shaped support is provided with magnetic transducer heads (preferably similar to the video heads) facing inwardly and accurately located to define the orientation of the video transducers on their carrier. One of the heads is energized and the signal read from the other. The head on the carrier is then adjusted until the observed signal is a maximum, which will occur only upon accurate alignment. The heads are then fixed in place on the carrier by means of an adhesive, for example introduced in grooves between the carrier and the head.
Inventors
- 👤 Peter Bragas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:02
CPC Classifications
H; H04; H04N; H04N17/00; H04N17/06; G; G11; G11B; G11B5/00; G11B5/48; G11B5/52; G11B5/53; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49027; Y10T29/4903; Y10T29/49032; Y10T29/49036
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
176 words
Video tape transducer head alignment apparatus to align video transducer heads on a rotatable head carrier (2) with respect to the center so that the gaps of the heads (8) are oriented toward the center and the distance between the faces of the transducer heads across the carrier is between predetermined tolerances, comprising a drum-shaped support (1); a plurality of standard magnetic transducer heads (4) located on the drum-shaped support and facing inwardly thereof, the transducer heads being spaced along the inner rim (3) of the drum-shaped support by the distances required by the spacing of the transducer heads on the carrier; means journalling said carrier (2) to be rotatable within said drum; a signal source (14) connected to apply an a-c signal (U1) to one of the heads (4); and signal reading means (15) connected to the head opposite the one head having said signal applied thereto whereby, upon proper alignment of the transducer head with respect to the standard head (4) the signal being read on said reading means will be a maximum (U2-16).
Claim 2
Dependent Claim
176 words
Video tape transducer head alignment apparatus to align video transducer heads on a rotatable head carrier (2) with respect to the center so that the gaps of the heads (8) are oriented toward the center and the distance between the faces of the transducer heads across the carrier is between predetermined tolerances, comprising a drum-shaped support (1); a plurality of standard magnetic transducer heads (4) located on the drum-shaped support and facing inwardly thereof, the transducer heads being spaced along the inner rim (3) of the drum-shaped support by the distances required by the spacing of the transducer heads on the carrier; means journalling said carrier (2) to be rotatable within said drum; a signal source (14) connected to apply an a-c signal (U1) to one of the heads (4); and signal reading means (15) connected to the head opposite the one head having said signal applied thereto whereby, upon proper alignment of the transducer head with respect to the standard head (4) the signal being read on said reading means will be a maximum (U2-16).
Claim 3
Dependent Claim
17 words
Apparatus according to claim 1, wherein said transducer heads (4) are adjustably mounted on said carrier (2).
Claim 4
Dependent Claim
36 words
Apparatus according to claim 2, including at least one groove formed at adjacent surfaces of said carrier and said transducer heads; and adhesive introduced into said groove to lock said head in place on said element.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 1, wherein the standard heads (4) are video transducer heads.
Claim 6
Dependent Claim
15 words
Apparatus according to claim 4, wherein the standard heads and the transducer heads are similar.
Claim 7
Dependent Claim
168 words
Method to adjust a transducer head, adjustably mounted on a rotatable head carrier (2) with respect to the center so that the gaps of the heads (8) are oriented toward the center and the distance between the faces of the transducer heads across the carrier is between predetermined tolerances in which a plurality of standard magnetic transducer heads (4) are located on a drum-shaped support and facing inwardly thereof, the transducer heads being spaced along the inner rim (3) of the drum-shaped support by the distances required by the spacing of the transducer heads on the carrier; a signal source (14) is connected to apply an a-c signal (U1) to one of the heads (4); and signal reading means (15) are connected to the head opposite the one head having said signal applied thereto; said method comprising energizing said signal source; measuring the induced signal on said signal reading means; adjusting said head until the measured signal is a maximum signal; and locking said transducer head in place.
Claim 8
Dependent Claim
168 words
Method to adjust a transducer head, adjustably mounted on a rotatable head carrier (2) with respect to the center so that the gaps of the heads (8) are oriented toward the center and the distance between the faces of the transducer heads across the carrier is between predetermined tolerances in which a plurality of standard magnetic transducer heads (4) are located on a drum-shaped support and facing inwardly thereof, the transducer heads being spaced along the inner rim (3) of the drum-shaped support by the distances required by the spacing of the transducer heads on the carrier; a signal source (14) is connected to apply an a-c signal (U1) to one of the heads (4); and signal reading means (15) are connected to the head opposite the one head having said signal applied thereto; said method comprising energizing said signal source; measuring the induced signal on said signal reading means; adjusting said head until the measured signal is a maximum signal; and locking said transducer head in place.
Claim 9
Dependent Claim
25 words
Method according to claim 6, wherein the step of locking the transducer head in place comprises the step of adhering said head to said carrier.
Claim 10
Dependent Claim
48 words
Method according to claim 6, including at least a groove formed at adjacent surfaces of said carrier and said transducer head, wherein the step of locking the transducer head in place comprises the step of adhering said head to said carrier and introducing an adhesive into said groove.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |