1
John B Chu, Paul P Ju, Ynjiun P Wang: Extended working range dataform reader including fuzzy logic image control circuitry. Meta Holding, Watts Hoffmann Fisher & Heinke Co, December 30, 1997: US05702059 (270 worldwide citation)

A portable data collection system is disclosed. The system includes a dataform reader module having a board camera electrically coupled to a control and decoder board in an open loop feedback configuration. The control and decoder board includes fuzzy logic image control circuitry which analyzes a c ...


2
Timothy P O Hagan, Ynjiun P Wang, Daniel G Wall: Dataform reader including dual laser and imaging reading assemblies. Meta Holding Corporation, June 9, 1998: US05763864 (110 worldwide citation)

A hand held dataform reader for reading 1D and 2D bar codes and matrix dataforms is disclosed. The dataform reader includes a dataform reader module having a laser bar code dataform reading assembly, for reading 1D bar codes, and an imaging dataform reading assembly, for reading 2D bar codes and mat ...


3
Ynjiun P Wang: Dataform readers using interactive storage and analysis of image data. Meta Holding Corporation, Renner Otto Boisselle & Sklar PLL, October 12, 1999: US05966463 (8 worldwide citation)

Line-by-line dataform readers and methods are enabled to operate with reduced buffer memory capacity. Storage and retention of image data are controlled on an interactive basis by concurrent analysis while lines of image data are coupled from a linear scanner. In a first embodiment lines of image da ...


4
Chu John B, Ju Paul P, Wang Ynjuin P: Extended working range dataform reader including fuzzy logic image control circuitry. Meta Holding, August 5, 1998: EP0856182-A1

A portable data collection system including a dataform reader module (10) having a board camera electrically coupled to a control and decoder board (14) in an open loop feedback configuration. The control and decoder board (14) includes fuzzy logic image control circuitry (18) which analyzes a captu ...


5
Wang Ynjiun P, Ju Paul P: Extended working range dataform reader with reduced power consumption. Meta Holding, July 9, 1997: EP0782734-A1

An extended working range dataform reader (10) having a camera assembly (26) and a circuit board including gain and exposure control circuitry (56) which sets an initial gain value and exposure period from a previous data form reading session. If necessary, the gain and exposure are adjusted from th ...


6
Wang Ynjiun P, Ye Angi: Lecteurs de formes de donnees, a elimination du tremblement, et procedes correspondants, Anti-hand-jittering dataform readers and methods. Meta Holding Corporation, Symbol Technologies, BCF, March 20, 1997: CA2203639

Dataform readers using two-dimensional sensor array cameras provide image frames comprising successive first (Fig. 2B) and second (Fig. 2C) fields of image data. In hand-held operation, hand jitter results in image offset (4b) causing registration errors between fields. Resolution and decoding perfo ...


7
Ju Paul P, Wang Ynjiun P: Lecteur de forme de donnees a distance a plage de fonctionnement etendue et a faible consommation denergie, Extended working range dataform reader with reduced power consumption. Meta Holding Corporation, Symbol Technologies, GOWLING LAFLEUR HENDERSON, February 13, 1997: CA2200476

An extended working range dataform reader (10) having a camera assembly (26) and a circuit board including gain and exposure control circuitry (56) which sets an initial gain value and exposure period from a previous data form reading session. If necessary, the gain and exposure are adjusted from th ...


8
Wang Ynjiun, Ye Anqi: Lecteurs de formes de donnees inferieures au pixel, Sub-pixel dataform reader. Meta Holding Corporation, Symbol Technologies, DENNISON ASSOCIATES, April 17, 1997: CA2206166

Sub-pixel processing of image data representing a dataform, such as a 2D bar code, enables reading of dataforms including more data/smaller elements, without costly increases in sensor and memory capacity. Whole pixel processing is employed for pixel-per-element resolutions of two or better. Sub-pix ...


9
J B Chu, P P Ju, Y P Wang: Extended working range dataform reader including fuzzy logic image control circuitry. Meta Holding Corporation, zou guangxin, January 6, 1999: CN96198925

A portable data collection system including a dataform reader module (10) having a board camera electrically coupled to a control and decoder board (18) in an open loop feedback configuration. The control and decoder board (18) includes fuzzy logic image control circuitry (18) which analyzes a captu ...


10
Chu John B, Ju Paul P, Wang Ynjuin P: Extended working range dataform reader including fuzzy logic image control circuitry. Meta Holding Corporation, PINCHAK George L, April 24, 1997: WO/1997/015024

A portable data collection system including a dataform reader module (10) having a board camera electrically coupled to a control and decoder board (14) in an open loop feedback configuration. The control and decoder board (14) includes fuzzy logic image control circuitry (18) which analyzes a captu ...