System and method to cue operator response in a manually-driven document scanner
View Patent ↗A document scanner and associated feedback mechanism are disclosed. The document scanner includes a document bed including a document positioning surface, and a scanning module slidably connected to the document bed, the scanning module manually movable across the document positioning surface. The document scanner further includes a feedback mechanism arranged to receive information about a speed of movement of the scanning module, and output a feedback signal to a user of the document scanner.
1. A document scanner comprising:
a document bed including a document positioning surface;
a scanning module slidably connected to the document bed, the scanning module manually movable across the document positioning surface; and
a feedback mechanism arranged to receive information about a speed of movement of the scanning module, and output a feedback signal to a user of the document scanner;
wherein the feedback mechanism executes a compensation algorithm on the received information to correct for speed variation of the scanning module, the feedback mechanism outputting a feedback signal to the user when the scanning module is moving at a scanning speed outside of an acceptable speed range.
2. The document scanner of claim 1 , wherein the feedback mechanism includes a transducer configured generate a first alert when the scanning module is being moved faster than a threshold speed.
3. The document scanner of claim 1 , wherein the feedback mechanism includes a transducer configured to generate a second alert when the scanning module is being moved slower than a second threshold speed.
4. The document scanner of claim 3 , wherein the transducer includes one or more light emitting diodes.
5. The document scanner of claim 1 , wherein the scanning module includes a contact image sensor.
6. The document scanner of claim 5 , wherein the scanning module further includes a magnetic character reader.
7. The document scanner of claim 1 , further comprising a speed detection assembly configured to detect a speed of the scanning module with respect to the document positioning surface.
8. The document scanner of claim 7 , wherein the speed detection assembly includes a radial encoder.
9. The document scanner of claim 1 , wherein the feedback mechanism includes a cue module.
10. A feedback system for a manually operable document scanner, the feedback system comprising:
a cue module configured to receive a movement rate of a manually-operable scanning module of a document scanner, the cue module further configured to translate the movement rate to a cue response; and
a cue output perceptible to a user, the cue output altered based on the cue response;
wherein the cue module executes a compensation algorithm on the received movement rate to correct for speed variation of the scanning module, the cue module outputting a feedback signal to the user when the scanning module is moving at a scanning speed outside of an acceptable speed range.
11. The feedback system of claim 10 , wherein the cue output is generated by a transducer incorporated into the scanning module.
12. The feedback system of claim 11 , wherein the transducer includes one or more light emitting diodes.
13. The feedback system of claim 10 , wherein the cue module is implemented in circuitry of a document scanner.
14. The feedback system of claim 10 , wherein the cue module receives speed information from a radial encoder incorporated in the scanning module.
15. A method of scanning a document using a manually-operable document scanner, the method comprising:
placing a document on a document positioning surface of a document bed;
manually sliding a scanning module across the document positioning surface to capture image and character data relating to the document; and
while manually sliding the scanning module, observing feedback from a feedback mechanism, the feedback including information about the rate of movement of the scanning module;
wherein the feedback mechanism executes a compensation algorithm on the rate of movement of the scanning module to correct for speed variation of the scanning module, the feedback mechanism outputting a feedback signal to the user when the scanning module is moving at a scanning speed outside of an acceptable speed range.
16. The method of claim 15 , further comprising, upon determining that the rate of movement is outside of a predetermined threshold, manually adjusting the rate at which the manual sliding occurs.
17. The method of claim 15 , wherein observing feedback includes viewing a light emitting diode incorporated on the scanning module.
18. A method of providing user-feedback from a manually-operable document scanner, the method comprising:
receiving a document on a document positioning surface of a document scanner;
receiving information regarding a rate of movement of a scanning module across a document positioning surface during a scanning operation;
executing a compensation algorithm on the received information to correct for speed variation of the scanning module;
determining, in a cue module, a cue response based on the rate information; and
based on the cue response, providing an interpretable cue indicating whether the rate of movement of the scanning module is within an allowable range.
19. The method of claim 18 , wherein providing an interpretable cue includes activating one or more light emitting diodes incorporated in the scanning module.
20. The method of claim 18 , wherein receiving information regarding a rate of movement includes detecting a rate of movement of the scanning module using a radial encoder.