公开(公告)号：WO1980002614A1

公开(公告)日：1980-11-27

申请号：PCT/US1980000542

申请日：1980-05-07

Applicant: NCR CORP

Inventor： NCR CORP ,  SCULLEY G ,  PASSER B

IPC: G06K07/10

CPC classification number: G06K7/0163

Abstract: A transition code sensing system includes a record member (32) on which is located a plurality of bar code symbols (34), each of which comprises a data channel (20) and a clocking channel (22). The record member is inserted into a data terminal device and intermittently driven through a printing station in which a sensing member (36) senses the data channel out of phase with the sensing of the clocking channel and generates signals in response thereto. A circuit coupled to the sensing member will process the generated signals and transmit the processed signals to a utilization device. Upon processing the signals representing the last bar code symbol (29) on the record member, the circuit will generate a control signal (88) for stopping the movement of the record member through the printing station, thereby conditioning the record member for a subsequent printing operation.

公开(公告)号：WO1980002615A1

公开(公告)日：1980-11-27

申请号：PCT/US1980000543

申请日：1980-05-07

Applicant: NCR CORP

Inventor： NCR CORP ,  SCULLEY G ,  PASSER B

IPC: G06K07/14

CPC classification number: G06K7/10722 ,  G06K7/0163 ,  G06K7/10732

Abstract: An optical data sensing apparatus for reading a coded member (34) having parallel aligned tracks of data (20) and clocking (22) coded symbols includes a pair of sensing apertures (90, 92) onset to enable the sensing of the data track to occur out of phase with the sensing of the clocking track. The sensing apparatus includes a housing (48) having a sensing surface (54) in which the offset apertures are located, a light source (62), a pair of photo-transistors (58, 60) for sensing the tracks of coded symbols, and optical fibers (96) for transmitting light from the light source to the tracks of coded symbols and the reflected light to the phototransistors for the reading of the coded members.