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Countertop bar code symbol reading system having automatic hand-supportable bar code symbol reading device and stand for supporting projected scan field thereof    
United States Patent5591953   
Link to this pagehttp://www.wikipatents.com/5591953.html
Inventor(s)Rockstein; George B. (Audubon, NJ); Wilz, Sr.; David M. (Sewell, NJ); Bubnoski; David P. (Glassboro, NJ); Knowles; Carl H. (Moorestown, NJ)
AbstractAn automatic bar code symbol reading system comprising components for carrying out object detection, scanning, photoreceiving, A/D conversion, bar code presence detection, symbol decoding, data format conversion, data storage and data transmission functions. In general, the bar code symbol reading device includes a control system having a plurality of control centers that control the operation of the system components in accordance with preselected system control operations. Each of the control centers are responsive to control activation signals generated by certain of the system components upon the occurrence of predefined conditions. Certain of the control centers are capable overriding other control centers to provide diverse control capabilities which facilitates execution of intelligent operations and power consumption, during bar code symbol reading.
   














 Title Information Submit all comments and votes
 
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Drawing from US Patent 5591953
Countertop bar code symbol reading system having automatic

     hand-supportable bar code symbol reading device and stand for

     supporting projected scan field thereof - US Patent 5591953 Drawing
Countertop bar code symbol reading system having automatic hand-supportable bar code symbol reading device and stand for supporting projected scan field thereof
Inventor     Rockstein; George B. (Audubon, NJ); Wilz, Sr.; David M. (Sewell, NJ); Bubnoski; David P. (Glassboro, NJ); Knowles; Carl H. (Moorestown, NJ)
Owner/Assignee     Metrologic Instruments, Inc. (Blackwood, NJ)
Patent assignment
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Publication Date     January 7, 1997
Application Number     08/476,069
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     June 7, 1995
US Classification     235/462.31 235/462.35 235/462.45
Int'l Classification     G06K 007/10
Examiner     Hajec; Donald T.
Assistant Examiner     Lee; Michael G.
Attorney/Law Firm     Hopgood, Calimafde, Kalil & Judlowe
Address
Parent Case     RELATED CASES This is a Continuation of application Ser. No. 08/147,833 filed Nov. 4, 1993, now U.S. Pat. No. 5,424,525; which is a Continuation of application Ser. No. 07/583,421 filed Sep. 17, 1990, now U.S. Pat. No. 5,260,553.
Priority Data    
USPTO Field of Search     235/462 235/463 235/466 235/472
Patent Tags     countertop bar code symbol reading automatic hand-supportable bar code symbol reading stand for supporting projected scan field
   
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 References Submit all comments and votes
 
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 U.S. References
 
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5272323
Martino
235/462.27
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Melitsky
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50% - 74.99%
25% - 49.99%
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5 - 9.99%
2 - 4.99%
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< 1%
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50% - 74.99%
25% - 49.99%
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 Technical Review Submit all comments and votes
 Claims Submit all comments and votes
 


What is claimed is:

1. An automatic bar code symbol reading system having hand-held and stand-supported modes of automatic operation, comprising:

(A) a hand-supportable bar code symbol reading device including

(1) a hand-supportable housing supportable in the hand of a user, and having a light transmission aperture through which visible light can exit and enter said hand-supportable housing;

(2) object detection means in said hand-supportable housing, for detecting an object bearing a bar code symbol and being located within at least a portion of a scan field definable external to said hand-supportable housing, and automatically generating an activation signal in response to the detection of said object in at least a portion of said scan field;

(3) scan data producing means in said hand-supportable housing, for producing scan data from said detected object located in said scan field, said scan data producing means including

(i) a visible laser beam producing means disposed in said hand-supportable housing for producing and projecting a visible laser beam through said light transmission aperture,

(ii) scanning means for repeatedly scanning said visible laser beam across said scan field and said bar code symbol on said detected object, and

(iii) laser light detecting means for detecting the intensity of laser light reflected off said scanned bar code symbol and passed through said light transmission aperture, and automatically producing scan data indicative of said detected light intensity;

(4) scan data processing means in said hand-supportable housing for processing produced scan data so as to detect and decode said scanned bar code symbol on said detected object, and automatically produce symbol character data representative of said detected and decoded bar code symbol; and

(5) system control circuitry for automatically activating said scan data producing means and said scan data processing means for up to a predetermined time period in response to the generation of said activation signal, and automatically deactivating said scan data producing means and said scan data processing means in response to said scan data processing means failing to detect and decode a scanned bar code symbol within said predetermined time period,

wherein, during said hand-held mode of automatic operation, a bar code symbol on an object can be automatically read only when said object is automatically detected by said object detection means in at least a portion of said scan field while said hand-supportable bar code symbol reading device is supported within the hand of said user; and

(B) scanner support stand including

(1) housing support means for receiving and supporting at least a portion of said hand-supportable housing, and

(2) a base portion mountable relative to a countertop surface so that when said hand-supportable housing is supported within said housing support means during said stand-supported mode of automatic operation, said scan field is projected away from said scanner support stand and said hand-supportable housing, and extends above said countertop surface permitting the automatic reading of bar code symbols on objects passed by said scanner support stand,

wherein, during said scanner-supported mode of automatic operation, a bar code symbol on an object can be automatically read only when said object is automatically detected by said object detection means in at least a portion of said scan field projected away from said scanner support stand and above said countertop surface, while said hand-supportable bar code symbol reading device is supported within said scanner support stand.

2. The automatic bar code symbol reading system of claim 1, wherein said bar code symbol has first and second envelope borders, and said scan data processing means detects said bar code symbol by detecting said first and second envelope borders.

3. The automatic bar code symbol reading system of claim 1, wherein said object detection means comprises

signal transmitting means for transmitting a signal into said scan field, and

signal receiving means for receiving said transmitted signal reflected off said object in at least a portion of said scan field, and automatically generating said activation signal indicative of the detection of said object in at least a portion of said scan field.

4. The automatic bar code symbol reading system of claim 3, wherein said signal transmitting means comprises an infra-red light source for transmitting a pulsed infra-red light signal, and wherein said signal receiving means comprises an infra-red light detector disposed in said hand-supportable housing.

5. The automatic bar code symbol reading system of claim 1, wherein said visible laser beam producing means comprises a laser diode.

6. The automatic bar code symbol reading system of claim 1, wherein said hand-supportable housing comprises a head portion and handle portion, and wherein said handle portion is received and supported within said housing support means.

7. The automatic bar code symbol reading system of claim 1, wherein said object detection means and said scan data processing means are disposed in said head portion.
 Description Submit all comments and votes
 


BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to automatic code symbol reading (i.e. recognition) systems, and more particularly to an automatic code symbol reading device having a control system which permits multiple modes