Nova Patents
EP0904814A2

A communication game system

Abstract

In a new communication game system using communication, two kinds of communication game devices are realized with the same hardware and by differentiating their active modes. Communication between a communication game device of the first kind and a communication game device of the second kind is made by differentiating the transmitting frequency of the first kind device and the transmitting frequency of the second kind device from each other. A unmodulated pulse is transmitted at a specified frequency, and the pulse duration is changed with message. When a communication game device of the second kind receives a signal having a message from the communication game device of the first kind, the device of the second kind makes an annunciation and transmits a responding signal if the received message is in accord with the message of its own. The communication game device of the fist kind make an annunciation when it receives a responding signal.

EP0904814A2, drawing sheet 1
Sheet 1 of 9

Term

Term ended

Projected expiry passed 23 September 2018, 8 years ago.

  1. Priority
  2. Filed
  3. Published
  4. Projected expiry
  5. Today

8 claims: 1 independent, 7 dependent

  1. 1
    A communication game system comprising a communication game device of a first kind and a communication game device of a second kind, each of said communication game device of the first kind and the second kind comprising a transmitter, a receiver, a battery power supply, an input switch of message, an annunciator, a microprocessor and a housing, wherein said communication game device of the first kind transmits its own message signal inputted from the input switch from the transmitter and after that annunciates in response to receiving a signal containing a message same to that of the said device of the first kind, and wherein said communication game device of the second kind, in response to receiving a signal containing a message same to that of the said device of the second kind, makes an annunciation and transmits its own message signal with the transmitter.