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1. WO1996003694 - SYSTEM FOR WIRELESS COLLECTION OF DATA FROM A PLURALITY OF REMOTE DATA COLLECTION UNITS SUCH AS PORTABLE BAR CODE READERS

Publication Number WO/1996/003694
Publication Date 08.02.1996
International Application No. PCT/US1995/008978
International Filing Date 27.07.1995
Chapter 2 Demand Filed 27.02.1996
IPC
G06K 7/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers
H04L 12/28 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. LAN or WAN
H04L 12/403 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. LAN or WAN
40Bus networks
403with centralised control, e.g. polling
CPC
G06K 7/0008
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers, ; e.g. for reading patterns
0008General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
H04W 28/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
02Traffic management, e.g. flow control or congestion control
06Optimizing ; the usage of the radio link; , e.g. header compression, information sizing ; , discarding information
H04W 28/22
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
18Negotiating wireless communication parameters
22Negotiating communication rate
H04W 74/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
04Scheduled ; or contention-free; access
06using polling
Applicants
  • PSC INC. [US/US]; 675 Basket Road Webster, NY 14580, US
Inventors
  • KUECKEN, John, A.; US
Agents
  • BLUMENTHAL, David, A. ; Foley & Lardner Suite 500 3000 K Street, N.W. Washington, DC 20007-5109, US
Priority Data
08/281,50127.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM FOR WIRELESS COLLECTION OF DATA FROM A PLURALITY OF REMOTE DATA COLLECTION UNITS SUCH AS PORTABLE BAR CODE READERS
(FR) SYSTEME SANS FIL POUR RECUEILLIR LES DONNEES D'UNE PLURALITE D'UNITES ELOIGNEES RECUEILLANT DES DONNEES TELLES QUE DES LECTEURS DE CODES A BARRES PORTATIFS
Abstract
(EN)
In order to collect data messages (fig. 6) at a base station (fig. 2) which is in radio communications with portable data collection terminals (fig. 1) such as contain bar code scanners and which may move between different locations, all remote from the base station (fig. 2) in order to scan different labels (12) and read bar codes (10) printed thereon, a set of successive polling messages (fig. 4) are broadcast from the base station (fig. 2) addressed to different ones of the remote units (fig. 1) during successive polling cycles. The rate and the time for completing each polling cycle is optimized by increasing the interval between polls on one of the polling cycles where data is being collected, but only if a response on a previous high speed polling cycle from the remote unit (fig. 1) is coded to represent that unit has data ready to be transmitted to the base station (fig. 2).
(FR)
L'invention concerne un système pour recueillir les messages de données (fig. 6) à un poste de base (fig. 2) qui est en communication radio avec des terminaux portatifs pour recueillir des données (fig. 1) tels que des scanneurs de codes à barres mobiles entre plusieurs emplacements, tous éloignés du poste de base, et capables de lire différentes étiquettes (12) pour déchiffrer le code à barres (10) qui y est imprimé. Une série de messages d'interrogation successifs (fig. 4) est émise par le poste de base (fig. 2) en direction des différentes unités éloignées (fig. 1) durant des cycles d'interrogation successifs. La vitesse et le moment pour effectuer chaque cycle d'interrogation sont optimisés en augmentant l'intervalle entre les interrogations d'un des cycles d'interrogation lorsqu'on recueille des données, mais uniquement si une réponse à un cycle d'interrogation rapide précédent de l'unité éloignée (fig. 1) est codée pour indiquer que cette unité a des données prêtes à être transmises au poste de base (fig. 2).
Also published as
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