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US 2002/0001418 A1Published application
Recording method and apparatus
AssigneeC Technologies AB
InventorsCHRISTER FAHRAEUS, JAN NILSSON, PATRIK SODERLUND
Life of this patent
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AssigneeC Technologies AB
InventorsCHRISTER FAHRAEUS, JAN NILSSON, PATRIK SODERLUND
Estimating the term…
In a method for recording a selected sequence of characters with the aid of a pen, the latter is passed over the sequence of characters and a plurality of images, whose contents partially overlap, are recorded simultaneously with the aid of a light-sensitive sensor (8) with a two-dimensional sensor surface. The recorded images are put together, horizontally as well as vertically, into an image. Subsequently, the characters in the composite image are identified and stored in the pen with the aid of a predetermined character code format. The putting-together, the character identification, and the storing are carried out with the aid of a signal processing unit (20-24). By the method and the pen compensation is obtained for different speeds of movement and different angles of rotation of the pen.
A pen for recording a selected sequence of characters by passing the pen over the sequence of characters, comprising a light-sensitive sensor (8) for imaging the characters and a signal processing unit (20-24) for identifying the imaged characters and storing them in character coded format in the pen, characterised in that the light-sensitive sensor (8) has a two-dimensional sensor surface, the sensor being adapted to image the selected character sequence with the aid of a plurality of images with partially overlapping contents, and that the signal processing unit (20-24) is adapted to put together said plurality of images both vertically and horizontally into a composite image, whereby compensation is obtained for different speeds of movement and different angles of rotation of the pen, and that the identification of the imaged characters is performed on the basis of the composite image.
A pen according to any one of the preceding claims, wherein the signal processing unit (20-24) comprises a neural network for identification of the characters.
A pen according to any one of the preceding claims, wherein the signal processing unit is adapted to divide the composite image into a plurality of images each comprising only one character.
A pen according to any one of the preceding claims, further comprising an indicating device (29) for indicating that the pen is ready to scan the character sequence.
A pen according to any one of the preceding claims, further comprising a display (25) for showing the identified characters.
A method for recording a selected sequence of characters with the aid of a pen, comprising the steps of
Dependencies are inferred from the claim text.