The present invention relates to electronic price
labels, and in particular, to a method of displaying a
product information message by an electronic price label
(EPL).
EPL systems typically include a plurality of EPLs,
each associated with a particular product on display in
large retail establishments such as supermarkets or
department stores. The EPLs are typically attached to a
rail along the leading edge of a shelf on which items of the
associated product are stored and display the price of the
product item. In large retail establishments, thousands of
individual EPLs may be used in order to display the prices
of all products which are available for purchase within the
store. Each EPL within a retail establishment is typically
coupled to a central EPL computer in which information
relating to the EPL is stored in memory in an EPL data file.
Price information displayed by the EPL is stored in memory
in a price look-up (PLU) file.
In retail establishments, there are frequently special
promotions where certain products may be offered at a lower
retail price than usual, or where special offers or prizes
may be associated with the purchase of the product. Other
merchandise products may have legal restrictions imposed on
their sale. For example, in many countries, the sale of
alcohol is not permitted to persons under a certain age or
is not permitted during certain hours or on certain days.
Laws may also require that identification be presented to a
cashier on purchase of products such as alcohol, cigarettes
and some solvents. In some countries, various products may
be eligible for government subsistence programs,for example,
where government-issued food stamps may be used towards the
purchase of a product or where a product can be bought at
reduced price under an infant children scheme.
Traditionally, in all of the above instances, the
individual product items which are subject to the promotion,
sale restriction or government program, have been marked
with special tags or labels, or sometimes large banners or
notices have been installed on or adjacent the shelves on
which the product is stored, so as to convey the information
regarding the product to a customer. These tags and paper
price labels, banners or notices must be printed or marked
with the appropriate information and are then installed
manually by store personnel. This procedure is time-consuming,
inefficient and costly.
It is an object of the present invention to provide an
efficient and cost effective manner of displaying product
information that avoids the use of paper products such as
tags, labels, banners or other notices.
In accordance with a first aspect of the present
invention there is provided a method of displaying a product
information message by an electronic price label (EPL) of a
retail system, characterized by the steps of:
storing the product information message to be displayed
and a product information indicator associated with that
product information message, at a first location in the
retail system; storing a product information indicator for a product
at a second location in the retail system; generating a control message addressed to the EPL
associated with the product, including the substeps of reading the product information indicator for the
product from the second location; and reading the product information message associated with
that product information indicator from the first location; transmitting the control message to the EPL; receiving of the control message by the EPL; and displaying of the product information message by the
EPL associated with the product.
In accordance with a further aspect of the present invention
there is provided a retail system comprising a electronic
price label (EPL) associated with a merchandise product,
characterized by
first memory means for storing a product information
message and a product information indicator associated with
that product information message; second memory means for storing a product information
indicator for a product; control means for generating a control message
addressed to the EPL associated with the product, the
control means including means for retrieving the product
information indicator for the product from the second memory
means and for retrieving the product information message
associated with that product information indicator from the
first memory means; means for transmitting the control message to the EPL;
the EPL associated with the product including receiving
means for receiving the control message and display means
for displaying the product information message.
Embodiments of the present invention will now be
described by way of example with reference to the
accompanying drawings, in which:
Figure 1 is a block diagram of a retail system
according to the present invention; Figure 2 is a perspective view of an EPL displaying a
product restriction message; Figure 3 is a perspective view of an EPL displaying a
product promotional message; and Figure 4 is a flow diagram illustrating a method of
displaying a product information message by an EPL.
Referring to Figure 1, the retail system 10 shown
therein comprises an electronic price label computer 12
which is associated with a memory unit 24 and which
comminicates with a plurality of electronic price labels 14
(EPLs), only one of which represented in Figure 1. The
retail system 10 further comprises a transaction server 32
which is associated with an input device 30 and a memory
unit 34. The transaction server 32 communicates with the EPL
computer 12.
Each EPL 14 includes a control circuit 16, a memory
unit 20 and a display unit 22. The control circuit 16
controls the internal operation of the EPL 14 and receives
commands from and transmits response commands to the EPL
computer 12. The control circuit 16 also controls the
operation of the display unit 22 to display price and
additional product information. The memory unit 20 stores
product information and other data necessary for the
operation of the EPL 14. The display unit 22 is preferably a
liquid crystal display (LCD) and displays the price of the
product with which the EPL 14 is associated and other product
information.
The EPL computer 12 records, schedules and transmits
all commands including price change commands and diagnostic
commands to the EPL 14, and analyses status commands from
the EPL 14. Communication between the EPL computer 12 and
the individual EPLs 14 may be by remote communication such
as radio or infrared communication, by cable or by a
combination of both.
The memory unit 24 of the EPL computer 12 includes an
EPL basic data file 26 and an EPL additional data file 28.
The EPL basic data file 26 contains records for all the EPLs
of the retail system 10 in which general product
information, identification data, product price verifier
data and status data for the product with which the EPL is
associated, is stored. The EPL additional data file 28
stores product information messages 38 and associated
product information indicators 39 which uniquely identify
each product information message 38. The product
information messages 38 may be related to a product
promotion, a product restriction or a product which is
eligible under a government subsistence program, and may
include text and or special graphic images.
Promotional messages identify products which are for
sale at a reduced price or which are subject to other
special offers, e.g three items for the price of two.
Product restriction messages identify products such as
alcohol, cigarettes, solvents etc, the sale of which is
restricted by law. Such laws may require that the product
may not be sold at certain times or to customers under a
certain age, or that identification be presented to the
cashier on purchase of the product. Government program
messages identify products eligible for sale under special
government programs, such as a food stamp program or infant
children program.
The
product information messages 38 and
product
information indicators 39 are stored in table form in the
EPL
additional data file 28. Examples of such tables and
the
product information messages 38 stored therein, are
shown below; Table 1 illustrates a product promotion data
file, Table 2 illustrates a product restriction data file
and Table 3 illustrates a government program data file,
respectively.
Indicator | Promotional Information Message |
00 | (No information) |
01 | (ICON) |
02 | BUY ONE/GET TWO (FLASHING) |
03 | LOW PRICE |
04 | Both 01 and 03 information displayed simultaneously) |
Indicator | Product Restriction Information Message |
00 | (No information) |
01 | ID REQUIRED |
02 | NO SALE BETWEEN 15.00pm and 18.00pm |
03 | NO SALE TO PERSONS UNDER 18 |
04 | (Both 01 and 03 information displayed simultaneously) |
Indicator | Government Program Information Message |
00 | (No information) |
01 | FOOD STAMPS MAY BE USED FOR PURCHASE |
02 | INFANT CHILDREM PROGRAM |
03 | (Both 01 and 02 information displayed simultaneously) |
The transaction server 32 is a host computer and
communicates with a plurality of individual transaction
terminals (not shown in Figure 1) within the retail system.
The primary function of the transaction server 32 is to
communicate price information and product information to the
transaction terminals from a price look up file (PLU) 36
stored in the memory unit 34 of the transaction server 32.
It should be understood that the EPL computer 12 and the
transaction server 32 may comprise a single computer. The
PLU file 36 also contains product information indicators 39
for preselected products. These product information
indicators 39 may be manually input to the PLU file 36 by an
operator via the input device 30. The input device 30 may
be a keypad or any other suitable input device.
Referring now to Figures 2 and 3, an EPL 14 is shown in
more detail. In Figure 2, a product restriction information
message 38 informing customers that identification must be
presented to the cashier in order to purchase this product,
is being displayed in the display unit 22 of the EPL 14.
This product restriction information message 38 is
associated with product information indicator "01" in the
EPL additional product data file 28 (Table 2). In Figure 3,
a promotional information message 38 informing customers
that the product is for sale at a reduced price, is being
displayed in the display unit 22 of the EPL 14. This
promotional information message 38 is associated with the
product information indicator "03" in the EPL additional
product data file 28 (Table 1).
The method of displaying a product information message
will now be described with reference to the flow diagram of
Figure 4. The method begins with step 40 and in step 42,
all EPL product information messages 38 are stored in the
additional product data file 28 in the memory unit 24 of the
EPL computer 12. In step 44, an operator enters a product
information indicator 39 for a particular product in the
store for which a product information message is to be
displayed, via the input device 30 of the transaction server
32. In the case of a product promotion, new price
information for the product may also be entered during this
step. In step 46, this product information indicator 39 and
any new price information is processed by the transaction
server 32 and is stored in the record associated with that
product in the PLU file 36 of the memory unit 34.
The PLU file 36 is read by the EPL computer 12 in step
48, and the product information indicator 39 and any new
price information is retrieved therefrom. This product
information indicator 39 and any new price information is
stored in the record of the EPL 14 associated with that
product in the EPL basic data file 26 of the memory unit 24
of the EPL computer 12. In step 50, the EPL basic data file
26 is periodically read by the EPL computer 12, in order to
retrieve any product information indicators 39 which have
been entered therein. In step 52, EPL computer 12 creates a
control message addressed to the EPL 14 associated with the
product, by reading the product information indicator 39 in
EPL basic data file 26 and retrieving a product information
message 38 corresponding to that product information
indicator 39 from EPL additional product data file 28.
In step 54, the product information message 38 is
transmitted by the EPL computer 12 to the control circuit 16
of the addressed EPL 14 (i.e, to the control circuit 16 of
the EPL 14 associated with the particular product for which
the product information message is to be displayed). In
step 56, the product information message 38 is received by
the control circuit 16 of the EPL 14 and an acknowledgement
signal is transmitted to the EPL computer 12. In step 58,
the product information message 38 in stored in the memory
unit 20 of the EPL 14, and in step 60, the control circuit
16 controls the display unit 22 of the EPL 14 to display the
product information message 38 associated with the product
information indicator. The product information message 38
may be displayed as a permanent message (i.e not flashing),
or as a flashing message and may be displayed integrally
with or separately from the price information normally
displayed by the EPL 14. In step 62, the method ends.
The method of the present invention is advantageous in
that it is no longer necessary to print or mark special
tags, labels, banners or other notices with the relevant
product information and to install the paper tags, labels
etc, on or in close proximity to a particular product, in
order to convey special product information to a customer.
Hence, considerable savings in time and costs are achieved.
It should be understood that the EPL computer 12 and
the transaction server 32 and their associated memory units
and input devices may be a single computer which functions
to control both all the EPLs and the transactions terminals
in the retail establishment.