Description of Related Art Such gaming devices are known from a plurality of vendors. Typically, they are used for chatting, ot for playing games, and enable the user to input data. The data may be processed in the device and, in some applications, transmitted to one or more other users. The data may be displayed directly on the other user's communi- cation device, or it may be used, for example, to update a multi-user game environ- ment.

Problem of the Invention The present invention is aimed at providing a qualitatively new feature to social communication using electronic devices, such as chatting or playing games.

Summary of the Invention The invention achieves this by providing a hand-held device comprising a display, user input means enabling a user to control the function of the device, a processing unit, means for running at least one application on the device, at least one sensor for recording at least one parameter related to a physiological function, indicative of the emotional state of a user operating the device, where the at least one sensor com- prises at least two electrodes and means to measure a physical parameter represen- tative of the current between the at least two electrodes and for registering the elec- trical conductivity of a palm of a hand.

In this way, parameters indicative of the emotional state of the user of the device may be used to influence the function of the application, for example a game, run- ning on the device. The conductivity of the skin of the user's hands, which is an in- dicator of emotional state, for example, of stress or excitement, may be used to in- fluence the course of the application.

The application is preferably a social application, such as a chat program or a game involving two or more users, but it may also be a single user game or application.

Preferably, the device according to the invention further comprises means for changing the course of the application in dependence of the at least one parameter.

In this way, for example, a game running on the device may be adapted to the reg- istered stress level of the user.

Preferably, the device according to the invention also comprises transmission and receiving means, controlled by the processing unit, for transmitting information to and receiving information from, at least one other communication device. The transmission and receiving means are preferably adapted for wireless communia- tion.

In this case the device preferably further comprises means for adapting the informa- tion transmitted by the transmission means in dependence of the at least one pa- rameter recorded by the at least one sensor. The device may then also comprise means for changing the course of the application in dependence of information re- ceived by the receiving means. This enables interaction with other players or users in dependence of the emotional state of each user.

According to another preferred embodiment, the at least one sensor is adapted to register heart rate. The heart rate, which is also an indicator of a person's emotional state may then be used in the same way as the conductivity above.

Of course, both types of sensors, and other sensors, may be used in the same device.

Brief Description of the Drawings In the following preferred embodiments of the invention will be described, with ref- erence to the appended drawings, in which Figure 1 is a block diagram of a general communication device according to the in- vention.

Detailed Description of Embodiments Figure 1 shows a block diagram of a communication or gaming device 1 according to the invention. As common in the art, the communication device comprises a dis- play 3 for displaying text and/or graphics to the user. The display is controlled by a processing unit 5. A user of the communication device can input data through one or more user input devices 7,8 connected to the processing unit 5. Figure 1 shows a keyboard 7 integrated in the communication device and a mouse 8, connected to a connector 9 of the communication device, as input devices. Joysticks and any other type of user controlled input device may also be used. Although Figure 1 shows only one processing unit 5 which controls all other units, of course, several proc- essing units could be used, for controlling different parts of the device, or for pro- viding redundancy.

A memory unit 10 connected to the processing unit 5 comprises one or more appli- cations and possibly other data as will be discussed below.

Preferably, the communication or gaming device 1 also comprises at least one transmitter/receiver unit 11, controlled by the processing unit 5, for communicating with a similar communication device operated by another user. The communication may take place directly between the communication devices or through a network, according to any known communication standard. Therefore, the transmit-

ter/receiver unit 11 may be, for example, an IR port, a short-range radio transceiver, a transmitter/receiver according to any mobile telecommunications protocol. The device may comprise more than one transmitter/receiver unit to enable it to commu- nicate according to several different protocols, for example an IR port for short- range communication and a transmitter/receiver for a cellular network for long- range communication.

According to the invention the communication device also comprises one or more sensors 13,15 for recording parameters related to a physiological function, indica- tive of the emotional state of the user operating the communication device. The pa- rameters registered by the sensor, or sensors, are converted from analogue to digital signals in an A/D converter 17 and evaluated in the processing unit 5 to generate a signal corresponding to the parameter recorded.

The physiological function may be, for example, the electrical conductivity in the skin of the hand holding the console. In this case, the sensor 13 comprises electrodes 13 a, 13b in positions where the player's hands are in electrical contact with them.

The communication device also comprises measuring means 19 for measuring cur- rents that pass between the electrodes 13a, 13b.

Another function suitable for use according to the invention is the heart rate of the user. If the user becomes stressed, or excited, the heart rate will normally increase.

The communication device of Figure 1 also comprises a heart rate sensor 15 con- nected to a connector 16 of the communication device 1.

It will be understood that each of the sensors 13,15 could be integrated in the com- munication device or connected through a connector, or by a wireless connection to the communication device. Between the measuring means 19 and the A/D converter 17 and/or the heart rate sensor 15 and the A/D converter 17 an amplifier may be ar- ranged for amplifying the analogue signal before A/D conversion.

The sensors may be integrated in the communication device, in the positions where the user's hands or fingers will normally be, or the communication device may comprise input means for receiving information from the sensors. For example, to provide a more reliable indication of the user's heart rate, a sensor arranged to communicate with the communication device may be applied to the ear lobe of the user.

The parameter information obtained from the sensors 13,15 may be used in differ- ent ways. The parameter information may be used to adapt the game to the level of stress of the player. If the player is bored, the game can be made more difficult. The parameter information may also be incorporated by the processing unit 5 in the sig- nal transmitted to the other communication device or devices, to inform the user of the other communication device or devices about the emotional state of the user. In this case the emotional state of the player can be displayed by e. g. colour signatures.

Skilled players can then use emotion signals to predict behaviour.

The values of the parameters mentioned, especially the skin conductivity, will de- pend significantly on the individual player. It may therefore be desirable to calibrate the device to the user. The simplest way of doing this will be to measure the heart rate and/or conductivity at rest and extrapolate a curve from the value found at rest.

A more sophisticated way would be to measure the parameter at given points in time while the user was playing a game, while at the same points in time assessing the level of stress or excitement to produce a calibration curve for the user.

The memory unit 10 could store one or more personal calibration curves obtained as described above. One or more standard calibration curves could also be stored in the memory unit 10, so that a user could select the most suitable one.