Chip carrier for fingerprint sensor
View Patent ↗A carrier for a sweep-type fingerprint sensor and a method of operation are disclosed. The carrier has a recess for receiving and mounting the fingerprint sensor and one or more tactile elements for assisting the user in positioning a finger, and in correctly moving the finger across the sensor being read. In one embodiment the tactile element consists of an oval ridge, or a portion thereof, defining a major axis which is lies in the sweep direction. The tip of the finger is initially positioned in the arcuate portion of the oval ridge and is moved across the sensor, generally along the axis of the oval. The side walls of the ridge assist the user in correctly moving the finger across the sensor.
1. A self aligning carrier for a sweep-type fingerprint sensor comprising:
a body having an upper surface and comprising a recess in said upper surface for receiving a generally rectangular sweep-type fingerprint sensor having long sides and short sides,
at least one tactile element positioned on said upper surface adjacent to each said short side for assisting a user in moving a finger across said sensor in a desired path, and
an additional tactile element for assisting the user position said finger at a starting location prior to moving said finger across said sensor.
2. The carrier of claim 1 wherein said tactile elements comprise two elongate ridges raised above the surface of said sensor, said ridges being generally parallel to each other in the area of the sensor.
3. The carrier of claim 1 wherein said additional tactile element comprises a generally arcuate structure for receiving the tip of a finger.
4. The carrier of claim 1 comprising a ridge which is at least partially oval and defining a major axis, said recess being located on said major axis.
5. The carrier of claim 4 wherein said ridge forms a complete oval.
6. The earner of claim 1 further comprising a mounting structure for mounting said carrier on a substrate.
7. A self aligning carrier for a sweep-type fingerprint sensor comprising:
a body having an upper surface and comprising a recess in said upper surface for receiving a generally rectangular sweep-type fingerprint sensor having long sides and short sides,
at least one tactile element positioned on said upper surface of said body, for assisting a user in correctly positioning a finger to be sensed at a starting location prior to moving said finger across said sensor, and in correctly moving the finger across the surface of said sensor.
8. The carrier of claim 7 wherein said at least one tactile element comprises an arcuate ridge portion for positioning the tip of a finger.
9. The carrier of claim 8 wherein said tactile element comprises an oval ridge.
10. A structure for positioning a finger on a sweep-type fingerprint sensor having an axis defining the direction of finger movement across the sensor, comprising:
an arcuate tactile member comprising one or more tactile elements positioned on the axis of the rectangular sweep-type fingerprint sensor, and
at least one tactile member adjacent to each side of the fingerprint sensor and an additional tactile element for assisting a user position a finger at a starting location prior to moving said finger across said sensor.
11. The structure of claim 10 wherein said arcuate tactile member comprises a plurality of bumps.
12. The structure of claim 10 wherein said arcuate tactile member comprises a continuous ridge.
13. The structure of claim 12 wherein said ridge is a portion of an oval.
14. The structure of claim 12 wherein said ridge has a curved sidewall.
15. The structure of claim 12 wherein said ridge is chevron-shaped.
16. A method of sensing a fingerprint using a rectangular sweep-type fingerprint sensor, comprising:
positioning the tip of a finger at a starting location using a first tactile element comprising an arcuate ridge located adjacent to a rectangular sweep-type fingerprint sensor, and
moving the finger across the sensor in a desired path using a second tactile element comprising at least one elongate ridge raised above a surface of the sensor.
17. A self aligning carrier for a sweep-type fingerprint sensor comprising:
a body having an upper surface and comprising a recess in said upper surface for receiving a generally rectangular sweep-type fingerprint sensor having long sides and short sides,
at least one tactile element comprising an arcuate ridge portion for positioning the tip of a finger positioned on said upper surface of said body, for assisting a user in correctly positioning a finger to be sensed and in correctly moving the finger across the surface of said sensor.
18. A self aligning carrier for a sweep-type fingerprint sensor comprising:
a body having an upper surface and comprising a recess in said upper surface for receiving a generally rectangular sweep-type fingerprint sensor having long sides and short sides,
at least one tactile element positioned on said upper surface of said body, for assisting a user in correctly positioning a finger to be sensed and in correctly moving the finger across the surface of said sensor,
wherein said tactile element comprises at least a portion of an oval ridge.
19. A self-aligning carrier for a sweep-type fingerprint sensor comprising:
a body having an upper surface and comprising a recess in said upper surface for receiving a generally rectangular sweep-type fingerprint sensor having long sides and short sides,
a least one tactile element positioned on said upper surface adjacent to each said short side for assisting a user is moving a finger across said sensor in a desired path, wherein said tactile element comprises a chevron-shaped ridge.