Topic
Alphanumeric
About: Alphanumeric is a research topic. Over the lifetime, 2212 publications have been published within this topic receiving 36381 citations.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: An image database for handwritten text recognition research is described that contains digital images of approximately 5000 city names, 5000 state names, 10000 ZIP Codes, and 50000 alphanumeric characters to overcome the limitations of earlier databases.
Abstract: An image database for handwritten text recognition research is described. Digital images of approximately 5000 city names, 5000 state names, 10000 ZIP Codes, and 50000 alphanumeric characters are included. Each image was scanned from mail in a working post office at 300 pixels/in in 8-bit gray scale on a high-quality flat bed digitizer. The data were unconstrained for the writer, style, and method of preparation. These characteristics help overcome the limitations of earlier databases that contained only isolated characters or were prepared in a laboratory setting under prescribed circumstances. Also, the database is divided into explicit training and testing sets to facilitate the sharing of results among researchers as well as performance comparisons. >
2,520 citations
TL;DR: PATRICIA as mentioned in this paper is an algorithm which provides a flexible means of storing, indexing, and retrieving information in a large file, which is economical of index space and of reindexing time.
Abstract: PATRICIA is an algorithm which provides a flexible means of storing, indexing, and retrieving information in a large file, which is economical of index space and of reindexing time. It does not require rearrangement of text or index as new material is added. It requires a minimum restriction of format of text and of keys; it is extremely flexible in the variety of keys it will respond to. It retrieves information in response to keys furnished by the user with a quantity of computation which has a bound which depends linearly on the length of keys and the number of their proper occurrences and is otherwise independent of the size of the library. It has been implemented in several variations as FORTRAN programs for the CDC-3600, utilizing disk file storage of text. It has been applied to several large information-retrieval problems and will be applied to others.
1,063 citations
Patent•
12 Feb 2001
TL;DR: In this article, the location of the user's fingers in relation to where keys would be on an actual keyboard was detected and processed with respect to finger locations and velocities and shape to determine when virtual keys would have been struck.
Abstract: A user inputs digital data to a companion system (80) such as a PDA, a cell telephone, or an appliance device using a virtual input device (50) such as an image of a keyboard. A sensor (20) captures three-dimensional positional information as to the location of the user's fingers (30) in relation to where keys would be on an actual keyboard. This information is processed with respect to finger (30) locations and velocities and shape to determine when virtual keys would have been struck. The processed digital information is output to the companion system (80). The companion system (80) can display an image of a keyboard, including an image of a keyboard showing user fingers, and/or alphanumeric text as such data is input by the user on the virtual input device.
594 citations
Patent•
11 May 1988
TL;DR: In this article, an intelligent portable interactive personal data system is described, in which a microprocessor with memory is containted with a transaction card-shaped housing, and an alphanumeric keypad and al-phanumeric display is located on a surface of the housing.
Abstract: An intelligent portable interactive personal data system is disclosed. A microprocessor with memory is containted with a transaction card-shaped housing. An alphanumeric keypad and alphanumeric display is located on a surface of the housing. At least one port within the housing is provided for the input and output of information. An operating system is stored in the memory to control the operation of the system through the microprocessor. The operating system provides a means for generating a plurality of messages on the display that prompts the user during the operation of the system.
469 citations
Patent•
12 Jan 2001
TL;DR: In this article, an electronic programming guide (EPG) provides pictograms (120, 121, 122) and logos (110, 111, 112) to indicate what television programs are showing.
Abstract: An electronic programming guide ('EPG') provides pictograms (120, 121, 122) and logos (110, 111, 112) to indicate what television programs are showing. The EPG information can be displayed in a window within a television screen (102) while a program is shown on the remainder of the screen (102). Thus, the viewer can know what is playing on the various channels while watching one of the channels. The EPG comprises surfaces located in virtual 3D space and a 3D graphics pipeline applies the pictograms, logos, alphanumeric text and/or video clips to the geometric surfaces. The pictograms, logos, alphanumeric data and/or video clip appereance can be modified using a remote controller (150), e.g. by changing the geometric surface position or lighting. Optionally, internet HTML pages are parsed and applied to geometric surfaces in 3D virtual space.
294 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 25 |
| 2024 | 17 |
| 2023 | 53 |
| 2022 | 90 |
| 2021 | 27 |
| 2020 | 41 |