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3748 results about "Proximity sensor" patented technology

A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. A proximity sensor often emits an electromagnetic field or a beam of electromagnetic radiation (infrared, for instance), and looks for changes in the field or return signal. The object being sensed is often referred to as the proximity sensor's target. Different proximity sensor targets demand different sensors. For example, a capacitive proximity sensor or photoelectric sensor might be suitable for a plastic target; an inductive proximity sensor always requires a metal target.

Cellular phone with special sensor functions

Specific ambient and user behaviour sensing systems and methods are presented to improve friendliness and usability of electronic handheld devices, in particular cellular phones, PDAs, multimedia players and similar.
The improvements and special functions include following components:
    • a. The keypad is locked/unlocked (disabled/enabled) and/or the display activated based on the device inclination relative to its longitudinal and/or lateral axes.
    • b. The keypad is locked if objects are detected above the display (for example the boundary of a bag or pursue).
    • c. The keypad is locked/unlocked (disabled/enabled) and/or the display activated based on electric field displacement or bio-field sensing systems recognizing the user hand in any position behind the handheld device.
    • d. The electric response signal generated by an electric field through the user hand in contact with a receiver plate is used to identify the user and in negative case lock the device.
    • e. Connection with incoming calls is automatically opened as soon as a hand is detected behind the device and the device is put close to the ear (proximity sensor).
    • f. The profile (ring-tone mode, volume and silent mode) can be changed just putting the device in a specific verse (upside up or upside down).
    • g. Has a lateral curved touchpad with tactile markings over more surfaces to control a mouse pointer/cursor or selection with the thumb finger.

Personal choice biometric signature

A biometric method and system for personal authentication using sequences of partial fingerprint signatures provides a high security capability to various processes requiring positive identification of individuals. This approach is further enhanced by employing a frequency domain technique for calculating a Similarity Index of the partial fingerprint signatures. In a baseline usage, the sequential partial fingerprint sequence techniques augments sentinel systems for gaining access to restricted areas, and when used in combination with financial cards, offer a unique and greatly simplified means for authenticating or identifying individuals. A highly automated technique initially obtains a reference set of linear partial fingerprint signatures which serve as reference data against which later proffered candidate data in the form of at least two linear partial fingerprint signatures are compared for authentication. The particular two candidate signatures used and the sequence in which they are submitted are selected with the user's consent and serve as a PIN-like unique personal code. In an advanced embodiment, a pair of proximity sensors located along each of the linear tracks used for developing the linear partial signatures produce finger sensing signals which compensate for finger movement speeds and hence significantly improves the calculated Similarity Index values. The use of only partial fingerprint data greatly allays the concerns of widespread fingerprint dissemination by many individuals.

User interface for removing an object from a display

A digital system that may be used by children two years old and older. The digital system is contained in a child-proof case and has an upward-facing display with a touch-sensitive screen that is within easy reach of a child. Other I / O devices include proximity and motion sensors and a microphone, and there is also a loudspeaker. When a proximity sensor senses someone in the neighborhood of the system, it displays images on the display. A child may manipulate the images by touching them on the touch screen. Manipulations include selecting an image by touching it, “dragging” the selected image by moving the finger touching the image across the screen and “dropping” the image by lifting a finger from it, moving a selected image by touching another location on the screen and thereby causing the selected image to move to the touched location, removing an image from the screen by “throwing” it, i.e., moving it above a threshold speed, and modifying the image by tapping it twice and then moving the finger in a horizontal or vertical direction on the screen. The direction in which an image is thrown may further determine what the thrown image is replaced with. The manipulations are used to in activities such as shape matching, puzzle assembly, assembly of a face out of parts, and hide-and-go-seek.

Ergonomic lift-clicking method and apparatus for actuating home switches on computer input devices

This invention introduces lift-clicking, a gentle method of clicking that utilizes light touch home sensors on the mouse and other computer input devices. It can be used either to replace the prior art depression-type mouse button with a home touch surface and a light touch or proximity sensor, or to add a touch/proximity sensor to an existing mouse button, providing three or more additional functions for each finger. It is a very ergonomic method that uses less force than the weight of the relaxed resting finger. It employs a finger lift, or a finger lift followed by a gentle drop, and utilizes unique combinations of windows, timing, hand presence reference, and logic sequences carefully designed to automatically prevent the production of unwanted clicks when the finger first arrives on or leaves the home sensor as the hand arrives or departs the input device. The initial condition is a finger resting on a touch switch/proximity sensor surface at a home resting position. A function is triggered either by lifting (or sliding) the finger away from its home touch surface (lift-delay-reference mode) or by dropping the finger back to the surface soon after the lift (lift-drop mode). Unwanted clicks do not occur because the function is triggered either by a lift after a very short delay with a requirement for hand presence reference, or by a drop within a time window opened by the previous lift. The gentle lift of the finger followed by a passive drop eliminates the push-down muscle twitch of prior art depression clicking, without any sacrifice of speed. Optionally included are click-inhibiting means so that unwanted clicks are not produced when a finger leaves a home sensor to actuate a non-home switch or scroll device. Momentary lifted modes can be used to enable scrolling with mouse motion, a fine cursor control feature, or to ignore all XY data so that the mouse can be repositioned without lifting it off the desktop and without moving the cursor (disengage clutch feature). Dragging can be accomplished with either the finger held lifted or with the finger resting at home. A single lift-click sensor can be used to trigger two different functions, the function chosen depending on the amount of time between the lift and the drop. The lift-click sensor can be piggybacked together with a prior art mouse button to provide lift-clicking while still allowing depression clicking, greatly increasing the number of triggerable functions. A lift-click sensor can be of a fixed type with no moving parts, (a zero button mouse) allowing the manufacture of pointing devices that are completely solid state, low in cost and sealed from the environment. The lift-click method makes it possible to replace the click buttons on a horizontal mouse with a programmable multi-point XY(Z) multi-functional touchpad which can be used to provide not only lift-clicks, but by toggling to new function sets, can also offer arrow/nudge key functions, page navigation, fine cursor control, and gesturing. Lift-clicking can greatly improve versatility and ease of use in most types of pointing devices.
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