Hand held bar code reader with input and display device and processor

• US 5,532,469 A
• Filed: 01/25/1995
• Issued: 07/02/1996
• Est. Priority Date: 01/25/1982
• Status: Expired due to Term

• Current Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Barkan, Edward D., Swartz, Jerome, Shepard, Howard M.
• Primary Examiner(s): SHEPPERD, JOHN W
• Application Number:
  US08/377,998
• Time in Patent Office: 524 Days
• Field of Search: 235/462, 235/472
• US Class Current: 235/462.27
• CPC Class Codes: G06K 17/0022 arrangements or provisious for transferring data to distant stations, e.g. from a sensing device "transfer between computer elements G06F13/00 "; data-transmission H04L
• CPC Class Codes: G06K 7/10702 Particularities of propagating elements, e.g. lenses, mirrors G06K7/10831 takes precedence
• CPC Class Codes: G06K 7/10881 constructional details of hand-held scanners
• CPC Class Codes: G06K 7/109 adaptations to make the hand-held scanner useable as a fixed scanner

Abstract

A scanning head for reading bar code signals including a laser source producing a beam which is scanned across a symbol to be read by a moving mirror arrangement, and a photodetector responsive to light reflected from the symbol. The signal from the photodetector is digitized and decoded to recover bar code data. The scanning head includes a manually actuated input and display device. A microprocessor in the head controls the operation of the various components. A transmitter and receiver may be located in the scanning head for communication with a central computer, and a battery may be included in the head as a power supply so that the scanning head need not be connected by a cable to a terminal.

Claims

1. Apparatus for reading bar code symbols or the like and processing data associated therewith employing a portable unit supported by the user comprising:

(a) a light beam generator in said unit including a laser producing a light beam directed onto a symbol being read;

(b) a light detector in said unit receiving reflected light from said symbol being read and producing electrical signals related thereto and a scanner in said unit for automatically scanning at least one of said light beams and a field of view across said symbol being read while said symbol is spaced from said unit and visible to a user supporting said unit, the automatic scanning operation of the scanner being initiated by said user;

(c) processor circuitry including decoder circuitry in said unit for receiving said electrical signals and generating a digitized signal to generate therefrom data descriptive of said bar code symbol;

(d) said processor circuitry including at least one integrated circuit in said unit for data processing;

(e) an integrated circuit storage chip in said unit;

(f) a manually activated data input and data display device on said unit; and

(g) a portable housing containing said light beam generator, said light detector, said processor circuitry, said integrated circuit storage chip, and said manually activated data input and data display device.

2. The apparatus of claim 1 further comprising a power supply for said light beam generator, said light detector and said processor circuitry, said power supply being contained within said housing.

3. The apparatus of claim 1 wherein said integrated circuit storage chip facilitates real-time and subsequent data processing at the site of said symbol being read.

4. The apparatus of claim 1 wherein said data which is descriptive of said bar code symbol is stored in said integrated circuit storage chip.

5. The apparatus of claim 1 wherein said integrated storage chip is a database.

6. The apparatus of claim 1 wherein said portable housing is a hand-held housing.

7. Apparatus for reading bar code symbols or the like and processing data associated therewith employing a portable unit supported by the user, comprising:

a) a light detector in said unit receiving reflected light from a symbol being read and producing electrical signals related thereto;

b) a scanner in said unit for automatically scanning across said symbol being read, the automatic operation of the scanner being initiated as a result of a manual activity of a user supporting said unit;

c) processor circuitry including decoder circuitry in said unit, said decoder circuitry receiving said electrical signals and generating symbol recognition information;

d) means for terminating said reading of said symbol in response to said recognition information;

e) said processor circuitry including at least one integrated circuit in said unit for data processing;

f) a manually activated data input and a data display device on said unit; and

g) a portable housing containing said light detector, said scanner, said processor circuitry, said integrated circuit, and said manually activated data input and data display device.

8. The apparatus according to claim 7 wherein said unit is held by said user in a position spaced from said symbol being read.

9. The apparatus according to claim 7 further comprising a light beam generator including a laser light source.

10. The apparatus according to claim 9 wherein said light beam generator is contained in said portable housing.

11. The apparatus according to claim 10 wherein said scanner includes means for scanning a light beam generated in said unit across said symbol being read.

12. The apparatus of claim 7 wherein said portable housing is a hand-held housing.

13. A method for reading bar code symbols or the like and processing data associated therewith employing a portable unit supported by the user, comprising the steps of:

a) automatically scanning across a symbol being read;

b) detecting in said unit reflected light from said symbol being read and producing electrical signals related thereto;

c) receiving said electrical signals by processor circuitry including decoder circuitry in said unit, processing said electrical signals, and generating symbol recognition information, said processor circuitry including at least one integrated circuit in said unit for data processing;

d) entering and displaying data at said unit by a manually activated data input and a data display device on said unit;

e) said steps of automatically scanning, detecting, receiving, generating, and processing being performed in a portable housing containing said processor circuitry, said integrated circuit, and said manually activated data input and data display device.

14. A method according to claim 13 further comprising the step of positioning said unit so that it is not in physical contact with said symbol being read.

15. A method according to claim 13 further comprising the step of generating a light beam is said unit using a laser light source.

16. A method according to claim 15 wherein said scanning includes scanning a light beam generated in said unit across said symbol being read.

17. The apparatus of claim 13 wherein said portable housing is a hand-held housing.

18. A portable unit supported by the user for reading bar code symbols or the like, comprising:

a) symbol detection means comprising a light source generating a light beam directed from said unit toward a symbol to be read, said symbol being spaced from said unit, said symbol detection means receiving reflected light from a field of view containing said symbol, said symbol being read to produce electrical signals corresponding to said symbol;

said symbol detection means further comprising a scanning means to automatically scan at least one of said light beams and said field of view across said symbol to be read while said symbol is visible to a user of the unit;

b) evaluation means responsive to said electrical signals for recognizing the successful reading of a symbol being scanned;

c) read control means actuatable by a user of said symbol detection means to initiate reading of said symbol, said evaluation means and said read control means employing a microprocessor in said unit;

d) means on a surface of said unit for manually entering data and for displaying data;

e) a power supply for said unit; and

f) a light weight, portable housing means containing said symbol detection means, evaluation means, read control means, microprocessor, and means for manually entering and displaying data.

19. The unit of claim 18 wherein said means for manually entering data includes a plurality of manually activated keys.

20. The unit of claim 18 wherein said power supply further comprises a battery.

21. The unit of claim 20 wherein said power supply is contained in said portable housing means.

22. The unit of claim 18 wherein said read control means includes a manually actuated trigger.

23. The unit of claim 18 wherein said scanning means comprises a moving mirror driven by an electric motor.

24. The portable unit of claim 18 wherein said portable housing is a hand-held housing.

25. Apparatus for reading bar code symbols or the like and processing data associated therewith employing a portable unit, comprising:

(a) a light beam generator in said unit including a laser producing a light beam directed onto a symbol being read;

(b) a scanner in said unit for automatically scanning at least one of said light beams and a field of view across said symbol being read while said symbol is spaced from the unit and is visible to a user supporting the unit, the automatic scanning operation of said scanner being initiated by said user;

(c) a light detector in said unit receiving reflected light from said symbol being read and producing electrical signals related thereto;

(d) processor circuitry including decoder circuitry for receiving said electrical signals and generating a digital signal to generate therefrom data descriptive of the bar code symbol;

(e) said processor circuitry including at least one integrated circuit in said unit for data processing;

(f) an integrated circuit storage chip in said unit;

(g) a data display device on said unit; and

(h) a portable housing containing said light beam generator, light detector, processor circuitry, and integrated circuit storage chip.

26. The apparatus of claim 25 wherein said integrated circuit storage chip facilitates real-time and subsequent data processing at the site of said symbol being read.

27. The apparatus of claim 25 wherein said data which is descriptive of said bar code symbol is stored in said integrated circuit storage chip.

28. The apparatus of claim 25 wherein said portable housing is a hand-held housing.

29. The apparatus of claim 25 wherein said integrated storage chip is a database.