SC8in1 Interface

Combined Multimedia - Devices are becoming moore an moore popular. They do provide various usage possibilities like:

HTPC (Home Theater PC) for Reproduction of DVD, VCD, SVCD, DIVX, MP3

Digital Video Recorder

Sat & TV Receiver

Internet Surf box

Internet WebRadio und Web TV

Games - Console

ISDN Monitor


Email Monitor

and much moore...

Typical examples are the Siemens-Fujitsu Multitainer and the Activy300, which are based on Intel PC architecture. Also other devices like the popular dbox2 can be rebuilt to a multimedia terminal. After Linux installation on the dbox2, it is possible to use the dbox2 for the above mentioned multimedia - tasks.

The Linux Projekt is available under GPL and open source. The complete Linux CDK for developement is available at A good website concerning the usage of smartcards under Linux is M.U.S.C.L.E. (Movement for the use of Smart Cards in a Linux Environment)

The smartcard in multimedia - devices can also be used for:

Password Card for Access Control


Digital Signature

Storage and Exchange of TV Chanels and other Data

Children-Securuty for Internet Pages or TV

Threatment of Telefonebooks and SMS on GSM Cards

and orher ...

As the multimedia-devices do combine several devices with various application possibility, it may be necessary to use moore then one smartcard at the same time. Herefore we did develope the SC8in1 interface - it enables the connection and control of up to 8 smartcard units on devices, which do posses a serial port.

The SC8in1 interface is distributed without sofware. As delivered and without using drivers, the SC8in1 Interface is Smartmouse / Phoenix compatible. In such a case, the first inserted smartcard will be used. With additional control through the serial port, it is possible to recognize in which smartcard - units, smartcards are present and to select a desired card. The control of SC8in1 can be performed with code in "C" as shown in this example, using Windows or Linux. When switching from one to another smartcard, the power supply, the reset-line and the clock are not interrupted and reinitialization of the separate cards is not necessary. Each of the 8 smartcard units posses its own oscilator, so unlimited combinations of oscilators are possible.

The SC8in1 interface can be built in internal into a Nokia dbox2, Philips dbox2 or Sagem dbox2

Einbau in Nokia dbox2

Einbau in Sagem dbox2

Einbau in Philips dbox2

Inside a Nokia dbox2 it is possible to integrate in total 6 smartcard - units. The number of smartcard units, which can be in total built in a Sagem dbox2 or Philips dbox2 is two. As the SC8in1 interface is capable to control up to 8 smartcard units, the rest number of smartcard units can be integrated in a external housing and connected to the SC8in1 interface.

Information about the installation procedure of the SC8in1 - Nokia dbox2 Set, the installation of the SC8in1 in Nokia dbox2, Sagem dbox2 and Philips dbox2 are available in the Support menu.

Alternatively, the SC8in1 interface can also be used outside the housing of the device, using a extension cord and be placed together with up to 8 smartcard - units in a external housing.

External connection with Dreambox

External connection with Multitaner or other PC

Using a RS232 TTL converter, the SC8in1 interface can be connected to any device, which does posses a serial port. The required 5V voltage can usually be taken from the device.

Due to the variaty of possible combinations, the SC8in1 interface is offered as follows:

SC8in1 - PCB

This article includes only the PCB of SC8in1, the programmed Atmel MCU and the assembly list of the needed parts. This PCB can be used with Nokia dbox2, Sagem dbox 2 and Philips dbox 2 and using the RS232-TTL converter also with other devices, which do posses a serial port (Dreambox, PC, xbox, etc). The additional necessary electronic parts are not included and have to be purchased separately according to the assembly list.