POS system
First Claim
1. A point-of-sale system comprising a host unit and a plurality of point-of-sale terminal units connected thereto via a predetermined communication line for data transfer/receipt between each point-of-sale terminal unit and the host unit, wherein:
- maintenance programs for the point-of-sale system are stored in the host unit;
execution programs of the point-of-sale system are stored in the host unit;
each point-of-sale terminal unit is not provided with any point-of-sale system execution program, and has at least a transmission data generating function and a communication function for data exchange with the host unit;
the transfer/receipt data is subjected to data quantity reduction and compression; and
the data reduction and compression are performed in units of image data frames by comparing the present frame and immediately preceding frame of transferred data, only data recognized to have been changed with respect to the immediately preceding frame being compressed.
1 Assignment
0 Petitions
Accused Products
Abstract
A POS system comprising a host unit and a plurality of POS terminal units connected thereto via a predetermined communication line for data transfer/receipt between each POS terminal unit and the host unit is disclosed. Execution programs of the POS system are stored in the host unit, and each POS terminal unit is not provided with any POS system execution program, and has at least a transmission data generating function and a communication function for data exchange with the host unit.
24 Citations
18 Claims
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1. A point-of-sale system comprising a host unit and a plurality of point-of-sale terminal units connected thereto via a predetermined communication line for data transfer/receipt between each point-of-sale terminal unit and the host unit, wherein:
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maintenance programs for the point-of-sale system are stored in the host unit; execution programs of the point-of-sale system are stored in the host unit; each point-of-sale terminal unit is not provided with any point-of-sale system execution program, and has at least a transmission data generating function and a communication function for data exchange with the host unit; the transfer/receipt data is subjected to data quantity reduction and compression; and the data reduction and compression are performed in units of image data frames by comparing the present frame and immediately preceding frame of transferred data, only data recognized to have been changed with respect to the immediately preceding frame being compressed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A point-of-sale system comprising a host unit and a plurality of point-of-sale terminal units connected thereto via a predetermined communication line for data transfer/receipt between each point-of-sale terminal unit and the host unit, wherein:
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execution programs of the point-of-sale system are stored in the host unit; each point-of-sale terminal unit is not provided with any point-of-sale system execution program, and has at least a transmission data generating function and a communication function for data exchange with the host unit; and execution programs of the point-of-sale system are updated only at the host, wherein the transfer/receipt data is subjected to data quantity reduction and compression, and wherein the data reduction and compression are performed in units of image data frames by comparing the present frame and immediately preceding frame of transferred data, only data recognized to have been changed with respect to the immediately preceding frame being compressed. - View Dependent Claims (10, 11)
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12. A system for effecting point of sale functions, the system comprising:
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a) a host, the host including means for storing all programs related to execution of the point of sale system, and means for storing all programs related to maintaining the point of sale system; b) at least two point of sale terminals, each of the at least two point of sale terminals having i) means for generating transmission data, and ii) means for exchanging data with the host; and c) communication means coupled with the host and each of the at least two point of sale terminals, and facilitating communications between the host and each of the at least two point of sale terminals, wherein the communication means include means for performing data quantity reduction and compression in units of image data frames by comparing the present frame and immediately preceding frame of transferred data, only data recognized to have been changed with respect to the immediately preceding frame being compressed. - View Dependent Claims (13, 14, 15)
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16. In a system including a host, at least two point of sale terminals, and communications means coupled with the host and each of the at least two point of sale terminals, and facilitating communications between the host and each of the at least two point of sale terminals, a method for effecting point of sale functions, the method comprising:
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a) storing, solely at the host, all programs related to execution of the point of sale system; b) generating, by each of the point of sale terminals, data related to sales; and c) forwarding the data related to sales from each of the point of sale terminals to the host as soon as the data is generated, wherein the data is subjected to data quantity reduction and compression, and wherein the data reduction and compression are performed in units of image data frames by comparing the present frame and immediately preceding frame of transferred data, only data recognized to have been changed with respect to the immediately preceding frame being compressed. - View Dependent Claims (17, 18)
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Specification