(19) —
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`(12)
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`Europaisches Patentamt
`
`European Patent Office
`
`Office européen des brevets
`
`(11)
`
`EP 1 369 842 Al
`
`EUROPEAN PATENT APPLICATION
`
`(43) Date of publication:
`10.12.2003 Bulletin 2003/50
`
`(51) Int cl.7; GOOF 27/00
`
`
`
`(21) Application number: 02010466.7
`
`(22) Date offiling: 08.05.2002
`
`(84) Designated Contracting States:
`AT BE CH CY DE DK ES FI FR GB GRIE IT LILU
`MC NL PT SE TR
`
`Designated Extension States:
`AL LT LV MK ROSI
`
`(71) Applicant: Precisa Instruments AG
`8953 Dietikon (CH)
`
`(72) Inventors:
`* Buhler, René, c/o Precisa Instruments AG
`8953 Dietikon (CH)
`
`(54) Wireless multimedia display device
`
`The underlying invention generally relates to
`(57)
`the field of mobile computing, wireless communication,
`and interactive multimedia applications in mobile com-
`munication networks with high-speed access. Particu-
`larly,
`it refers to a customized multimedia information
`channel system presenting advertisement information
`(124a) and, if desired, other multimedia streams on a
`mobile communication and computing device (100)
`equipped with a Liquid Crystal Display (102) designed
`to meet modern business-to-business (B2B) require-
`ments. In this connection, interactive operation is guar-
`anteed by a digital wireless data and control link (108)
`between said mobile computing device (100) and a
`product (122) to be advertised.
`In contrast to conventional solutions, said mobile
`computing device (100) comprises a User Control Board
`
`* Huber, Rudolf, c/o Precisa Instruments AG
`8953 Dietikon (CH)
`
`(74) Representative: Rupp, Christian, Dip|.Phys. et al
`Mitscherlich & Partner
`Patent- und Rechtsanwalte
`Sonnenstrasse 33
`
`80331 Miinchen (DE)
`
`(101) with an Application Programming Interface (105c)
`providing an intercommunication between a software
`routine (105b), said User Control Board (101), the dis-
`play (102) of said device (100), and an additional hard-
`disk drive (111) for storing content data (124a) to be ren-
`dered on the display (102) of said device (100). Thereby,
`said User Control Board (101) is capable of communi-
`cating with a specific file server (118) over a bidirectional
`air interface (108) and a Wireless Local Area Network
`(120) by transmitting user requests (123) and receiving
`content information (124a), receiving control informa-
`tion (124b) from a remote control device (116), and
`transmitting status information (124c) to the remote con-
`trol device (116). Furthermore, said device (100) is ca-
`pable of receiving identification information (126) about
`the product (122) from a tag device (114) attached to
`said product (122).
`
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`001 PARIS (FR)
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`EP 1 369 842 Ai
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`Description
`
`FIELD AND BACKGROUND OF THE INVENTION
`
`[0001] The underlying invention generally relates to the field of mobile computing, wireless communication, and
`interactive multimedia applications in mobile communication networks with high-speed access. Particularly, it refers to
`a customized multimedia information channel system presenting advertisementinformation and, if desired, other mul-
`timedia streams on a mobile communication and computing device equipped with a Liquid Crystal Display which meets
`modern business-to-business (B2B) requirements. In this connection, interactive operation is guaranteed by a bidirec-
`tional digital wireless data and control link realized as an RF interface between said device and a product to be adver-
`tised.
`
`Inthe recentpast, the Internet has emerged as a dynamic medium for channeling online transactions between
`[0002]
`customers and firms on a virtual marketplace (e-business). Due to the rapid growth of the World Wide Web (WWW),
`there has been a corresponding expansion in commerceon this robust platform. Likewise, wireless communications
`has become an inherent part of most people's working lives and lifestyles today and is one of the fastest growing
`applications within smart card industry. The next generation of Universal Subscriber Identification Modules (USIMs)
`will feature a variety of additional customer services such as online banking and trading, ticket reservations, ordering
`food deliveries, Internet access, weather reports and all different kind of additional location-based and personalized
`services.
`
`Presently, new technologies are being developed which allow mobile telephones and other portable devices
`[0003]
`to comfortably access the Internet, and hence to be used for e-business applications. As they are portable, and due
`to the vast number of potential users, emerging wireless m-business applications will be at least as important as con-
`ventional Internet connections for e-business. This trend is mainly be driven by the massive deploymentof wireless
`key technologies (e.g. Bluetooth, WAP, GPRS, and UTMS), mobile devices (e.g. PDAs and smartphones)and services
`(e.g. m-business, e-purses and e-vouchers), which will bring significant new challenges to enterprise information and
`resource management. As standards such as Wireless Access Protocol (WAP) evolvein line with Internet standards,
`Webaccess and content will become a market driver for mobile data.
`
`[0004] Overthe next few years, mobile technologies and the Internetwill feed on each otherin order to fuel e-business
`developments. With mobile telephone usage predicted to continue to outstrip PC usage in most markets worldwide, it
`is possible that many of the e-commerce systemsthat will evolve over the next decade will be based largely around
`wireless communications involving portable devices such as cellular telephones, Personal Digital Assistants (PDAs)
`and hybrids of these. Such portable devices will provide a low-cost form of Internet access for some and a bridge for
`continuous accessfor others. Furthermore, wireless communications has the potential to link diverse appliances in
`the home, office and factory, which, when combined with technologies such as Global Positioning System (GPS),
`creates many potentially interesting new applications. The penetration of wireless devices and a maturing Internet
`economy provide potentially powerful opportunities to satisfy business needsfor increasing customer intimacy, greater
`responsiveness and shorter cycle times. Today, there are significant challenges in preparing for and managing the
`business and technology components of m-business.
`[0005] Online commerce can be transacted in many forms, depending on the respective type of business activity.
`An emerging business model in online commerce for which the underlying invention can advantageously be applied
`is business-to-business (B2B) commerce: This includes inter-company trading and supplier networks, vertical industry
`exchanges, horizontal linkages betweenfirms, and digital business-market mechanisms that include auctions, spot
`markets and others. The economic justification for these types of businesseslie in cost and scale efficiencies, product
`and service aggregation, and lower search costs combined with broader reach and convenience. Revenuesare derived
`either on transaction-based fees, or long standing contractual relationships.
`[0006] Although wireless access is creating considerable opportunities for m-business, it also involves significant
`complexities. Wireless carriers, Internet portals and application service providers have to create new strategic part-
`nershipsto avoid failure in a dynamic but immature new market. Furthermore, companies haveto surveytheir corporate
`requirements and make prudent investments that are aligned with key businessinitiatives. The use of mobile devices
`for wireless access to corporate resources will result in substantial new management, security and support issues.
`[0007] Rapid advancesin handheld computing devices, wireless network connectivity and data transfer speeds are
`driving the revolution in wireless computing. Over the next few years, wireless data communications will emerge as a
`viable, cost-effective extension of and alternative to wired technologies. Thereby, companieswill expect their mobile
`workforce to havethe ability to work effectively anywhere and anytime. The impetus behind these developments is
`straight forward: enterprises that empower their mobile workforce have a platform for improving their competitive ad-
`vantage.
`[0008] The successof wireless data applications mainly depends on three factors: networks, devices, and applica-
`tions. From the carrier side, there is the need for nationwide networks that have high availability, are cost-effective and
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`EP 1 369 842 Al
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`reliable. Furthermore, mobile devices will need to have long battery life, be lightweight, durable, easy to use and have
`easy-to-read screens. Recent developments in microelectronics such as flash memory, micro-displays and various
`input options have made PDAssmaller, faster, more reliable and cost-effective than ever before. For example, modern
`PDAsare provided with a built-in wireless radio transmitter for network connectivity, and new services are coming
`online that extend wireless cata capabilities to the family of Palm handhelds.
`[0009]
`Single-function mobile handheld devices, such as bar code scanners, pagers, and electronic organizers have
`been deployed acrossa variety of vertical applications. The next stage of developmentfor mobile computing will involve
`the deploymentof wireless, expandable devices capable of conducting enterprise data management and mobile com-
`munications with greater efficiency and at a lower total cost than their predecessors. Today, device suppliers stand at
`the cuspof the transition from a business-to-consumer (B2C)- to a business-to-business (B2B)-oriented marketplace.
`To that end, leading vendors are developing the next generation of portable devices that will dictate how enterprise
`users access and manage data and voice communications from a mobile accesspoint.
`
`BRIEF DESCRIPTION OF THE PRESENTSTATE OF THE ART
`
`Personal Digital Assistants (PDAs) are becoming increasingly ubiquitous, and technology such as Bluetooth
`[0010]
`and the IEEE 802.11 standard will bring PDAsinto close interactive communication with other types of devices. Fur-
`thermore, cellular phones and pagers, which are primarily used for communication, are increasingly becoming pro-
`grammable. Today,it is investigated how these kinds of SHDs can be used with all kinds of home, office, and factory
`equipment. The conceptis that people can use their own SHDs, e.g. to control a photocopier in an office, a machine
`tool in a factory, the lights or a video cassette recorder at home, and almost any other kind of electronic device.
`[0011]
`In addition to the capability to attach a PDA to a desktop or portable PC in order to allow a synchronization
`of calendars, emails, contact lists, and other personal data, PDAs are increasingly extended by attachmentof a cell
`phone, printer, additional memory module, modem, or other peripheral devices.
`[0012] A basic distinction of personal information devices can be made between Smart Handheld Devices (SHDs),
`which are used to access content, and desktop or notebook computers, which comprise keyboards and can thus be
`used to create content as well as accessit. SHDs can be subdivided into telephones, which putvoicefirst, and Personal
`Digital Assistants (PDAs), such as devices from Palm, Psion and others, which put data first. Telephones, of course,
`can handle some data, and PDAsare being given voice capabilities. But it is a matter of priorities. Handheld wireless
`devicesfall into four broad categories: enhanced telephones, smartphones, PDAtablets and PDA clamshells. Smart-
`phones and PDAswill subdivide into pen-based and keyboard-based variants. The small size ("form factor") of many
`mobile devices limits the amount and type of data that can be input or output, which will be key in determining the most
`suitable types of mobile application. The more data-centric an application, the moreit will need larger screen sizes.
`[0013] When mobile telephone capabilities are added to PDAs, more data-intensive applications will become pos-
`sible. Speech recognition and enhanced displays using new technologies such aslight-emitting polymerswill also help
`to overcome the constraints of mobile devices' small size, further enhancing their usability for m-business. For example,
`Nokia hasits "Dial A Coke" concept for vending machines, where product choice is made by telephone and the price
`is billed by the cellular operator. A car wash in Helsinki also works in a similar way. Peoples Phone of Hong Kong is
`launching a service to allow bill payment by credit card via mobile telephones. Mobistar of Belgium has demonstrated
`loading e-cash onto Proton smart cards over mobile telephones. Telenor of Norwayis running a public trial allowing
`users to select and pay for cinema and theater tickets by mobile telephone. Investors in Singapore can buy and sell
`shares using the data capabilities of their mobile telephones.
`[0014] Many PDAsalso have either a Universal Serial Bus (USB) or a serial port. An USB or serial cable can be
`attached to the port, or the entire device can be inserted into a cradle that provides an USB or serial connection to a
`desktop or portable PC, or to USB or serial devices. They may also support one ofthe following expansion interfaces,
`therebyfacilitating the connection peripherals, addition of memory or provision of network connectivity. Each interface
`accommodates a specific type of card that is inserted into the interface:
`
`-
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`-
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`The Springboard interface is a proprietary interface designed by Handspring for their Visor family (Palm platform)
`of devices.
`It has the largest physical volume of the peripheral cards. Furthermore, the Springboard interface
`provides the highest data transfer rate because it allows attached I/O devices to be connected directly to the
`processor bus. Besides, it can accommodate a separate battery to support higher power functions.
`
`CompactFlash is an industry-standard expansion interface for portable devices. It is widely supported, and although
`the CompactFlash cardsize is relatively small, it provides enough room to implement manyfunctions. It is a popular
`interface for adding memory to digital cameras and portable MP3players. In addition, serial ports, modems, Eth-
`ernet cards, cellular network attachments, and Global Positioning System (GPS) devices are implemented on
`CompactFlash cards. Due to this wide support, the interface is expected to be supported by many devicesin the
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`EP 1 369 842 A1
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`-
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`The SmartMedia interface is the proprietary design currently manufactured by Toshiba and Samsung. Toshiba has
`trademarked the name, but has madethe specification available for free to the industry in the hope of creating a
`standard. Not all SmartMedia cards are interchangeable. Some interfaces require 5.0 V from the connecting PDA,
`some use 3.3 V, and others can be adaptedto either voltage. Thereby, the voltage of the card must be matched
`to the voltage of the specific portable device.
`
`- MultiMediaCard was created by a joint agreement between Siemans, Hitachi and Sandisk. The MultiMediaCard
`has the size of a postage stamp and is designed to provide a small memory storage medium for portable MP3
`music players. Its small sizelimits its ability to support a variety of other I/O attachments.
`
`-
`
`Secure Digital is based on the MultiMediaCard interface. Furthermore, this interface also supports the SDMI spec-
`ification. Similar in size to the MultiMediaCard, the Secure Digital card is used mainly for simple memory expansion.
`Although the specification enables the development of I/O devices using cables or other extensions, this approach
`can be cumbersome due to its small size. An advantage of the Secure Digital interfaceis that it can also accept
`a MultiMediaCard.
`
`[0015] Most PDAsare provided with infrared ports, which implementthe Infrared Data Association (IrDA) standard.
`Theseports can be used to connect the PDAto a desktop or portable PC, exchange contact information with other
`mobiles, or connect the PDAto cell phones, printers, and otherinfrared devices. As the Bluetooth personal area network
`(PAN) technology becomes more prevalent, IrDA ports are expected to be superseded on handheld devices. Nowa-
`days, Bluetooth networking technology is deemed as the key componentin the context of techniques providing short-
`range wireless connectivity. The main purpose of Bluetooth is to replace cables between electronic devices, such as
`telephones, PDAs, laptop computers, digital cameras, printers, and fax machines by using a low-cost radio chip.
`[0016]
`In future, SHDs that accept PC cards will be able to utilize Bluetooth PC cards. Pairing these PC card-en-
`hanced PDAswith wireless technology based on Bluetooth yields the potential to provide a wider range of connectivity
`options than products by Handspring or Palm. Motorola recently released a cell phone called Timeport 270 that has a
`Bluetooth add-on. With a Bluetooth PC card inserted into a PDA, it can wirelessly accessthe Internet from the Bluetooth
`card on the Motorola cell phone up to 30 feet away. The Motorola cell phone receives the packets by using the Wireless
`Application Protocol (WAP) and transmits these packets to nearby PDAs or computers. Thereby, the user can access
`any WAP Website on the Internet. The only drawback is that users must carry two separate devices - a cell phone
`and a PDA.
`
`[0017] Currently, most PDAs and more and morecellular phones are equipped with an internal expansion port for
`media cards such as InfoSticks or multimedia cards like CompactFlash cards. Thereby, external expansion interfaces
`like aprinter or an Access Point (AP) of amobile network can be used in combination with a short-range radio technology
`like Bluetooth by applying an integrated radio module placed in an expansion port of the PDA, which can e.g. be used
`as a CompactFlash card.
`[0018]
`Fully compliant with the ISO standard 14443A, MIFARE@ is a well-known industry standard for contactless
`and dual interface smart card schemes. With an immense worldwide installed base, it is a well proven RF communi-
`cation technologyfor transmitting data between acard andareader device. The platform offers a full range of compatible
`integrated circuits (ICs) for contactless smart cards and card readers, as well as dual interface ICs that provide a secure
`link between the contactless and contact card markets.
`
`[0019] Delivering a competitive and highly reliable platform for all types of service, from very low cost solutions to
`multifunctional cards including contactless technology, Java cards - smart cards that are able to execute Java byte
`code, similar to the way Java-enabled browsers do - are presently at the forefront of the smart card market. Thereby,
`Java helps to make smart cards more accessible to developers and business people by providing a well-understood,
`familiar environment. However, since standard Java withall ofits libraries (especially in the Java 2 guise)is far too big
`to fit on a smart card, a stripped-downversion of Java has specially been created. Java cards are based on a subset
`of the Java Application Programming Interface (API) plus some special-purpose card commands.
`[0020] Together with standards like Java Card 2.1 and Open Platform 2.0, highly optimized Java implementations,
`8-bit WE family and MIFARE® PROXdual interface smart card controller ICs by Philips Semiconductors are paving
`the wayfor the developmentof Open Platform smart cards. Capable of being dynamically updated, even after issuance,
`said cards offer high security between application, advanced cryptography based on the Data Encryption Standard
`(DES), increasedflexibility for service providers, including use in existing MIFARE®-based transport schemes, easy
`implementation, and finally quick time-to-market for new services. These Open Platform and multi-application cards
`are offering unprecedented choicefor financial institutions. A wide variety ofoff-the-shelf solutions are available from
`several leading industry providers, resulting in a great choice of multi-sourced Java products.
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`Philips Semiconductors’ 8-bit WE family of security and crypto-controller smart card ICs offers new features
`[0021]
`such as highly integrated 0.35 um process technology featuring five metal layers. It delivers the flexibility and security
`to support a wide range of applications on a single card. They are suitable for security-sensitive application such as
`banking, SIM cards for mobile phones, pay TV and Security Access Modules (SAM) for Point-of-Sale (POS) terminals.
`[0022]
`For the communication between said smart cards and their environment, any standard telecommunication
`networks, é.g. Local Area Networks (LANs), Metropolitan Area Networks (MANs) and/or Wide Area Networks (WANs)
`which can be accessed via modem or ISDN, can be used.
`[0023] The status of the applied rendering devices can be controlled by means of a single interface. Thereby, alarm
`signals can be received via e-mail, mobile phone or pager.
`[0024] Broadcast transmissions of multimedia content via satellite and/or multicast networks allows to transfer sev-
`eral hundred or thousand display positions. Thus, a plurality of rendering devices can be addressedby a single trans-
`mission, which significantly reduces cost and time needed for said broadcast transmission.
`[0025] The data transmission to the rendering devices can be performed by means of an Internet standard protocol,
`e.g. via File Transfer Protocol (FTP) using the Transmission Control Protocol (TCP) and/or the Internet Protocol (IP).
`By applying FTP servers, two or more rendering devices can simultaneously be addressed.
`
`OBJECT OF THE UNDERLYING INVENTION
`
`In view of the explanations mentioned above, it is the primary object of the underlying invention to enable
`[0026]
`users to create television-style multimedia presentations and to distribute them to television and/or computer screens
`in remote locations.
`
`[0027] This object is achieved by means of the features of the independent claims. Advantageous features are de-
`fined in the dependent claims. Further objects and advantagesof the invention are apparentin the following detailed
`description.
`
`SUMMARYOF THE INVENTION
`
`[0028] Theproposedsolution according to the underlying invention is basically dedicated to a customized multimedia
`information channel system presenting advertisementinformation and, if desired, other multimedia streams on a mobile
`communication and computing device equippedwith a Liquid Crystal Display (LCD) designed to meet modern business-
`to-business (B2B) requirements. In this connection, interactive operation is guaranteed by a bidirectional digital wireless
`data and control link realized as an IrDA interface between said device and an item to be advertised.
`
`BRIEF DESCRIPTION OF THE CLAIMS
`
`In the following sections, the main aspects and embodiments of the underlying invention as disclosed in the
`[0029]
`appended claimsshall briefly be summarized. A more detailed description of the invention and said claims will follow
`in a subsequent section dedicated to the description of the enclosed figures.
`[0030] A first embodimentof the underlying invention is directed to a multimedia display device comprising a screen
`for displaying content information, a control means for controlling the screen display, means for enabling a userto input
`information, and a bidirectional air interface for wirelessly transmitting data from/to the control means. Thereby, said
`control means is adapted to receive both content information and remote control information over the air interface, the
`remote control information designating setting parameter for the display of content information on the screen, to locally
`store content information received over the air interface in a permanent storage device in the multimedia display device
`for later display on the screen, and to transmit both information representing the current status of the multimedia display
`device as well as user input information over the air interface.
`[0031]
`Further aspects of said embodimentpertain to a similar multimedia display device comprising a screen for
`displaying content information, a control means for controlling the screen and the speaker means, a bidirectional air
`interface for wirelessly transmitting data from/to the control means, and a local storage meansfor the later display of
`content information received overthe air interface. Said multimedia display device is additionally equipped with means
`for wirelessly detecting the presence of a tag device in the neighborhood of the multimedia display device, wherein
`the control means dynamically control the display of the content information depending on the detection of a tag device.
`[0032]
`Furthermore, a second embodimentof the underlying invention refers to a display terminal for advertisement
`information which comprisesa local storage device for advertisementinformation, a database associating identification
`codes of wireless smart cards with predefined advertisement information, a receiver for the presence of a wireless
`smart card in the neighborhood of the display terminal, and a controller for dynamically displaying locally stored ad-
`vertisementinformation associated with the identification code of the wireless smart card detected.
`
`[0033] The following claims are related to a method for the displayof visual information on a display device comprising
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`the steps of downloading content information to be displayed to a storage device of the display device over an air
`interface, wirelessly detecting the presence of a tag in the neighborhood of the display device, and dynamically con-
`trolling parameters for the display of content information according to the result of the detection step.
`[0034]
`In the subsequent claims, a method for the display of advertisementinformation is disclosed, characterized
`by steps of attaching a wireless smart card bearing an identification code to an item with which advertisementinfor-
`mation is to be associated, detecting the presence of the wireless smart card in the neighborhood of an information
`display terminal, the information display terminal comprising a local storage device for advertisementinformation to
`be displayed, and dynamically adapting the content displayed at the information display terminal with regard to adver-
`tisement information associated by the identification code of the wireless smart card detected.
`[0035] Besides, one embodimentof the invention pertains to a software program productthat implements a method
`as described above when running on the operating system of a computing device.
`[0036] Another embodimentof the underlying invention is directed to a portable tag device attached to an item ina
`close environmentof a multimedia display device and/or display terminal as described above. It comprises a wireless
`smart card bearing an identification information about said item, and an antenna for transmitting modulated RF signals
`overthe air interface. Thereby, said tag device serves as a passive transponder for wirelessly transmitting modulated
`RF signals representing said identification information to the multimedia display device and/or display terminal over
`the air interface.
`
`[0037] Next, a method for operating a tag device is disclosed which comprises the steps of loading identification
`information about said item from a local storage device on the wireless smart card, and continuously transmitting
`modulated RF signals representing said identification information to the multimedia display device and/or display ter-
`minal over the air interface when activated. Thereby, said RF signal can directly be transmitted from the tag device to
`the multimedia display device and/or display terminal over the air interface or by means of a Wireless Local Area
`Network (WLAN).
`[0038]
`Finally, a wireless RF receiver mounted on the user control board of the multimedia display device and/or
`display terminal for detecting the presence of a tag device in the neighborhood of the wireless RF receiver is claimed.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`Further advantages and possible applications of the underlying invention result from the subordinate claims
`[0039]
`as well as from the following description of the preferred embodimentof the invention which is depicted in the following
`drawings:
`
`Fig.1a
`
`exhibits a block diagram showing a system architecture for a multimedia display device according to the
`underlying invention and its interaction in a wireless environment capable of processing and displaying mul-
`timedia streams received overthe air interface, which is used for presenting advertisementinformation about
`a specific item by wirelessly detecting the presence of a tag device attachedto said item, thereby dynamically
`controlling the display of the content information depending on the detection of a tag device,
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`Fig. 1b|showsthe front and rear side of the multimedia display device and a fastening element used to attach said
`40
`multimedia display device to a wall, and
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`Fig. 2
`
`presents a flowchart illustrating a method for displaying advertisementinformation about a specific item on
`a multimedia display device according to the underlying invention by wirelessly detecting the presence of a
`tag device attached to said item, thereby dynamically controlling the display of the content information de-
`pending on the detection of a tag device.
`
`DETAILED DESCRIPTION OF THE UNDERLYING INVENTION
`
`Inthe following, the preferred embodimentof the underlying invention as depicted in Figs. 1a, 1b, and 2 shall
`[0040]
`be explained in detail. The meaning of the symbols designated with reference signs as depicted in said figures can be
`taken from the appendedtable of reference signs.
`[0041]
`In Fig. 1a, a block diagram is depicted showing a system architecture for a multimedia display device 100
`according to the underlying invention and its interaction in a wireless environment capable of processing and displaying
`multimedia streams received over the air interface 108, which is used for presenting advertisement information 124a
`about a specific item 122 by wirelessly detecting the presence of a tag device 114 attachedto said item 122, thereby
`dynamically controlling the display of said content information 124a depending on the identification data 126 of a de-
`tected tag device 114.
`[0042]
`Ina first embodimentof the underlying invention, the multimedia display terminal 100 is fixed and the item
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`EP 1 369 842 Al
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`In a second embodiment,
`122 with the attached tag device 114 is carried to said multimedia display terminal 100.
`however, the multimedia display terminal 100 is a mobile terminal to be carried to the fixed item 122 with the attached
`tag device 114.
`[0043]
`In contrast to conventional solution, said multimedia display device 100 comprises a User Control Board 101
`(UCB) with an Application Programming Interface 105c¢ (API) providing an intercommunication between a software
`routine 105b, said User Control Board 101 (UCB), the Liquid Crystal Display 102 (LCD) of said device 100, and an
`additional hard-disk drive 111 (HDD) for storing content data 124a to be rendered on the display 102 of said device
`100. Thereby, said UCB 101 is capable of transmitting user requests 123 to a specific file server 118 over an air interface
`108 and a Wireless Local Area Network 120 (WLAN), and receiving content information 124a (e.g. advertising infor-
`mation about a specific item 122) from said file server 118. Furthermore, it is capable of receiving control information
`124b (e.g. control parameters for adjusting the audio volume and the screen brightness of the mult