Hand-held optical scanner with onboard battery recharging assembly

• US 5,381,020 A
• Filed: 03/31/1993
• Issued: 01/10/1995
• Est. Priority Date: 03/31/1993
• Status: Expired due to Term

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Company (HP Inc.)
• Inventors: Aas, Eric F., Kochis, Richard L.
• Primary Examiner(s): Nelms, David C.
• Application Number:
  US08/040,817
• Time in Patent Office: 650 Days
• Field of Search: 250/566-568, 250/221, 235/462, 235/472, 358/473
• US Class Current: 250/566
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence

Abstract

A hand-held optical scanner comprising a hand-displaceable scanner housing; scanner electrical components mounted within the housing for performing scanner operating functions; a battery disposed in the housing and electrically connected to the electrical components; a generator disposed in the housing and operatively associated with the battery; and a roller assembly mounted in the housing and drivingly linked to the generator.

Claims

1. A hand-held optical scanner comprising:

a) hand-displaceable housing means for supporting operating components of said optical scanner;

b) scanner electrical components mounted within said housing means for performing scanner operating functions;

c) battery means disposed in said housing for supplying electrical energy to said scanner electrical components;

d) generator means for supplying electrical energy to charge said battery means;

e) roller means rotatably mounted on said housing means and drivingly linked to said generator means for providing driving torque to said generator means.

2. The invention of claim 1 further comprising switching means for selectively electrically connecting said battery means with said generator means in a first switched state and for disconnecting said battery means from said generator means in a second switched state.

3. The invention of claim 2 further comprising:

roller speed sensing means for generating a data signal representative of the speed of rotation of said roller means and generating a signal representative thereof;

controller means responsive to said roller speed sensing signal for issuing control commands for switching said switching means between said first and second states at predetermined roller speeds.

4. The invention of claim 3 wherein said generator means comprises a DC motor operated in reverse.

5. A hand-held optical scanner comprising:

a) hand-displaceable scanner housing;

b) scanner electrical components mounted within said housing for performing scanner operating functions;

c) a battery disposed in said housing and electrically connected to said electrical components;

d) a generator disposed in said housing and operatively associated with said battery; and

e) a roller assembly mounted in said housing and drivingly linked to said generator.

6. The invention of claim 5 further comprising a switching assembly electrically connecting said battery with said generator and having a first switched state in which said battery is electrically disconnected from said generator and a second switched state in which said battery is electrically connected with said battery.

7. The invention of claim 6 further comprising:

a roller assembly speed sensor; and

a controller operatively associated with said roller assembly speed sensor, said controller issuing control commands switching said switching assembly between said first and second switched states at predetermined roller assembly speeds.

8. The invention of claim 7 wherein said generator comprises a DC motor operated in reverse.

9. A method of producing data representative of a scanned object with a hand-held scanner comprising the steps of:

a) providing energy from a battery for generating a data signal representative of imaged portions of the object;

b) providing energy to charge the battery with a generator; and

c) driving the generator with a roller assembly mounted on the hand-held scanner.

10. The method of claim 9 wherein the step of providing energy to charge the battery with a generator comprises providing energy to charge the battery through use of mechanical energy provided by the roller assembly to a DC motor operating in reverse.

11. The method of claim 10 comprising the further step of electrically disconnecting the battery from energy receiving relationship with the motor when the roller assembly is operated under predetermined, relatively low speed, operating conditions.

12. The method of claim 11 comprising the further step of electrically reconnecting the battery into energy receiving relationship with the motor when the roller assembly is operated under predetermined, relatively high speed, operating conditions.