Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
Electronic price display apparatus comprising a plurality of price display units (64,76,82) for mounting in a retail establishment at respective locations each having a discrete address, and central processing means (52) arranged for selectively accessing each address and controlling each of said display units (64,76,82), characterized by inductive loop data transmission means having a transmission loop (58), driven by audio amplifying means (56), for transmitting data for accessing and controlling said display units, said inductive loop data transmission means being coupled to said central processing means (52) by way of signal modulator means (54), and further characterized by inductive loop receiving means (66) associated with said display units (64,76,82) for receiving data transmitted from said transmission loop (58) and for supplying data for said display units (64,76,82) by way of demodulator means.
Claim 2
Dependent Claim
28 words
Apparatus according to claim 1, characterized in that said receiver means comprises a plurality of receiver coils (66) each associated with at least one respective display unit (64,76,82).
Claim 3
Dependent Claim
53 words
Apparatus according to claim 1, characterized in that said display units (64,76,82) are inter-connected by a control rail connected to rail control means (152) by way of which each of said addresses is accessed, and in that said receiving means (66) comprises a receiver coil (66) connected to said rail control means (152).
Claim 4
Dependent Claim
53 words
Apparatus according to claim 3, characterized by further control rails connected to respective further rail control means (152), further receive coils (66) and further pluralities of display units (64,76,82), in which each of said rail control means (152) has a discrete address for selective accessing and control by said central processing means (52).
Claim 5
Dependent Claim
21 words
Apparatus according to any one of claims 1 to 4, characterized in that central processing unit (52) comprises a personal computer.
Claim 6
Dependent Claim
21 words
Apparatus according to any one of claims 1 to 5, characterized in that said transmission loop (58) comprises a transmit coil.
Claim 7
Dependent Claim
32 words
Apparatus according to any one of claims 1 to 6, characterized in that each of said plurality of display units (64,76,82) includes a bar code and price of the product associated therewith.
Claim 8
Dependent Claim
23 words
Apparatus according to any one of claims 1 to 7, characterized by battery means (84) for supplying power to said display units (64,76,82).
Claim 9
Dependent Claim
33 words
Apparatus according to any one of claims 1 to 8, characterized in that each of said display units (64,76,82) comprises a plurality of display digits and a driver means (90,126-132) for each digit.