公开(公告)号：FR2396362A1

公开(公告)日：1979-01-26

申请号：FR7817714

申请日：1978-06-07

Applicant: IBM

Inventor： COWARDIN ROBERT L ,  LAURER GEORGE J

IPC: G06K7/016 ,  G06K7/10 ,  G06K9/18

Abstract: A circuit for decoding coded electric signals from a scanner reading a coded label such as the Universal Product Code (UPC) label, establishes a set of counting gates based on a predetermined sequence of discrete signal transitions and counts a set of related pulse frequencies during the gating periods under control of the established counting gates. The counts are compared in a predetermined sequence to determine the relationship, between their magnitudes and a coded signal is generated indicative of the relationship. The coded signals indicate the value of the coded information.

公开(公告)号：CA1101556A

公开(公告)日：1981-05-19

申请号：CA305324

申请日：1978-06-13

Applicant: IBM

Inventor： COWARDIN ROBERT L ,  LAURER GEORGE J

IPC: G06K7/016 ,  G06K7/10 ,  G06K19/06

Abstract: LABEL FIND METHOD AND CIRCUIT A method and circuit for finding the beginning of valid coded information from a scanner reading a label such as the Universal Product Code (UPC) label establishes a plurality of counting gates based on a predetermined sequence of discrete signal transitions and counts a plurality of related pulse frequencies during the gating periods under control of the established counting gates. The accumulated counts are compared in a predetermined sequence to determine whether selected counts when compared bear a predetermined relationship to each other and a code generated indicative of the relationship which indicates the beginning of valid label data or invalid label data on a continuous basis

公开(公告)号：CA1005782A

公开(公告)日：1977-02-22

申请号：CA201424

申请日：1974-05-31

Applicant: IBM

Inventor： COWARDIN ROBERT L ,  MATUCK GEORGE C ,  MCCRAY CHARLES M ,  POWELL FLAVIUS M ,  PRATT WOODROW W ,  THOMAS DELBERT C JR ,  THORNE WILLIAM D

IPC: B41J2/24 ,  B41J3/00 ,  B41J11/04 ,  B41J11/48 ,  B41J19/16 ,  B41J25/304 ,  G06K15/02 ,  H04N1/29

Abstract: A printer is disclosed in which a character forming print head is disposed on a carriage which pivots about a central point to describe an arcuate path, adjacent to which is situated an arcuate platen. The media to be marked upon conforms to the arcuate shape of the platen. The print head oscillates or reciprocates from one end of the arc to the other, and back. The arcuate path length may be varied to encompass printing in one or more coplanar stations on an arc in the plane of the print head and pivot.

公开(公告)号：CA1101555A

公开(公告)日：1981-05-19

申请号：CA305323

申请日：1978-06-13

Applicant: IBM

Inventor： COWARDIN ROBERT L ,  LAURER GEORGE J

IPC: G06K7/016 ,  G06K7/10 ,  G06K9/04

Abstract: DECODING METHOD AND CIRCUIT A method and circuit for decoding coded electric signals from a scanner reading a coded label such as the Universal Product Code (UPC) label, establishes a plurality of counting gates based on a predetermined sequence or discrete signal transitions and counts a plurality of related pulse frequencies during the gating periods under control of the established counting gates. The counts are compared in a predetermined sequence to determine the relationship between their magnitudes (e.g., A

公开(公告)号：CA1064616A

公开(公告)日：1979-10-16

申请号：CA248302

申请日：1976-03-19

Applicant: IBM

Inventor： COWARDIN ROBERT L ,  LAURER GEORGE J

IPC: G02B6/04 ,  G02B6/28 ,  G02B6/38 ,  G06K7/10 ,  G02B5/14

Abstract: WAND FOR READING OPTICALLY ENCODED GRAPHIC SYMBOLS A wand suitable for scanning the universal product code (UPC) symbol uses a light emitting diode for illuminating the symbol and a silicon photodetector for receiving the reflected energy. A single optical fiber is coupled to the diode and to a portion of a second single fiber for conducting narrow bandwidth visible light centered about 6,500 A.degree. to the terminus of the wand. The reflected light energy from the symbol when it is scanned by the wand is transmitted to the silicon photodetector via the said second single fiber which is also coupled to a third single fiber which conducts the reflected light energy to the silicon detector.

公开(公告)号：FR2396460A1

公开(公告)日：1979-01-26

申请号：FR7817687

申请日：1978-06-05

Applicant: IBM

Inventor： COWARDIN ROBERT L ,  LAURER GEORGE J

IPC: G01R29/02 ,  H03K5/00 ,  H03K5/1252 ,  H03K5/01 ,  H03K5/20

Abstract: A circuit for filtering positive and negative glitches (i.e., dropouts and noise spikes) in a pulse-like signal to be processed, utilizes a single timing element which introduces a uniform delay in both the leading and trailing edges of the pulse-like signal, thus eliminating pulse-width distortion of the signal. A single adjustment may be made which has the same effect on both the leading and trailing edges making a uniform adjustment of both delays easily achieved.

公开(公告)号：FR2307283A1

公开(公告)日：1976-11-05

申请号：FR7603919

申请日：1976-02-06

Applicant: IBM

Inventor： COWARDIN ROBERT L ,  LAURER GEORGE J

IPC: G02B6/04 ,  G02B6/28 ,  G02B6/38 ,  G06K7/10 ,  G02F3/00

Abstract: A wand suitable for scanning the universal product code (UPC) symbol uses a light emitting diode for illuminating the symbol and a silicon photodetector for receiving the reflected energy. A single optical fiber is coupled to the diode and to a portion of a second single fiber for conducting narrow bandwidth visible light centered about 6,500 A to the terminus of the wand. The reflected light energy from the symbol when it is scanned by the wand is transmitted to the silicon photodetector via the said second single fiber which is also coupled to a third single fiber which conducts the reflected light energy to the silicon detector.