Pen type data scanning apparatus

• US 5,974,204 A
• Filed: 07/15/1993
• Issued: 10/26/1999
• Est. Priority Date: 07/15/1993
• Status: Expired due to Fees

• Current Assignee: Transpacific Plasma, LLC
• Original Assignee: Primax Electronics Limited
• Inventors: Lin, Shih-Chieh, Chen, Chien-Suan
• Primary Examiner(s): Johns, Andrew W.
• Application Number:
  US08/092,223
• Time in Patent Office: 2,294 Days
• Field of Search: 382/59, 382/65, 382/67, 382/313, 382/314, 382/321, 382/323, 348/376, 348/75, 348/158, 348/233, 235/473, 235/483, 235/472, 235/454, 235/485, 710/12, 710/14, 710/31
• US Class Current: 382/314
• CPC Class Codes: H04N 1/00236 using an image reading or reproducing device, e.g. a facsimile reader or printer, as a local input to or local output from a computer image input to or image output from a computer via a network H04N1/00209
• CPC Class Codes: H04N 1/00241 using an image reading device as a local input to a computer input via network, e.g. network scanners H04N1/00225
• CPC Class Codes: H04N 1/107 with manual scanning
• CPC Class Codes: H04N 1/1075 Arrangements for facilitating holding of the scanner, e.g. shapes, grips
• CPC Class Codes: H04N 1/1077 Arrangements for facilitating movement over the scanned medium, e.g. disposition of rollers
• CPC Class Codes: H04N 2201/0471 using dedicated detectors
• CPC Class Codes: H04N 2201/04724 on a separate encoder wheel
• CPC Class Codes: H04N 2201/04734 Detecting at frequent intervals, e.g. once per line for sub-scan control

Abstract

A pen type scanner (10) having an optically conductive light director (24) for directing light from a light emitting diode (20) onto a specific portion of textual data (78) on a page (76). Light reflected from the page is focused by a lens assembly (28) onto a sensor apparatus (30). As the pen type scanner (10) is moved across the page (76) a roller (34) activates a distance encoder (32). The pen type scanner (10) is connected to a parallel port (54) of a computer (56) through an interconnection cable (50) and a port adaptor component (58).

Claims

1. A data scanner for scanning data from a page into a computer, comprising:

a generally pen shaped housing;

a light source within the housing for emitting light onto the page;

a light sensor within the housing for sensing light reflected from the page in a first dimension;

a distance encoder for sensing movement of the data scanner across the page in a second dimension in a form such that the data can be transmitted as binary data to the computer; and

electrically conductive means for transmitting signals from said light sensor to the computer;

wherein

the computer is a conventional general purpose personal computer.

2. The data scanner of claim 1, and further including:

a light direction device for directing light from said light source through said housing.

3. The data scanner of claim 2, wherein:

the light direction device is an optically conductive means such that light is transmitted through the light direction device.

4. The data scanner of claim 2, wherein:

the light direction device is generally rectangular in cross section.

5. The data scanner of claim 2, wherein:

the light direction device has an inwardly reflective outer surface covering at least a portion thereof.

6. The data scanner of claim 1, and further including:

a guiding device for having thereon a registration mark for aligning the data scanner with the data on the page.

7. The data scanner of claim 6, wherein:

the guiding device is at least partially transparent such that a user can view the data through the guiding device as the data scanner is positioned over the data.

8. The data scanner of claim 1, and further including:

a lens for focusing light reflected from the page onto the light sensor.

9. The data scanner of claim 1, wherein:

said electrically conductive means is adapted for connection to a parallel port of the computer.

10. The data scanner of claim 1, wherein:

said electrically conductive means is adapted for connection to a parallel port of the computer through a port adaptor component, the port adaptor component having therein a switching means for switching connection from the computer between a printer connector and the data scanner.

11. The data scanner of claim 10, wherein:

the switching means switches to connection from the computer to the data scanner when the data scanner is in use and further switches to connection between the computer and the printer connector when the data scanner is not in use.

12. The data scanner of claim 1 wherein:

said light source is located in a proximal end of said housing and light is emitted from a distal end of said housing.

13. The data scanner of claim 10, wherein:

said light sensor is located in the proximal end of said housing and light entering the distal end of said housing is focused onto said light sensor by a lens.

14. A method for capturing data into a computer, in steps comprising:

positioning an alignment marking of an optical scanner over a printed line of the data;

activating said optical scanner and moving said optical scanner horizontally such that the data is scanned by the optical scanner;

electrically canceling the background from the output of the optical scanner;

performing optical character recognition on the output from the optical scanner as the data is scanned; and

storing the data in the computer in character format.

15. The method of claim 14, wherein:

the data is provided from said optical scanner into the computer through a parallel port of the computer.

16. The method of claim 14, wherein:

the data is provided from said optical scanner into the computer through a parallel port of the computer and further through a port adaptor, the port adaptor being provided with a switching means for switching connection from the computer between said optical scanner and a printer connector of the port adaptor.