Apparatus for automatically selectively displaying information of a plurality of kinds

A device comprising:

• first means for producing a first information signal representative of information of a first kind;
• second means for producing a second information signal representative of information of a second kind, the information of said second kind being optionally variable, said second information signal being variable in response to a variation in the information of said second kind;
• display means for displaying the information of any of at least said first and said second kinds;
• memory means for memorizing said second information signal to produce a memory signal representative of the information of said second kind;
• comparator means coupled with said second means and said memory means for comparing the second information signal with said memory signal to produce a result signal;
• third means responsive to said result signal for producing a switch signal variable between a first and a second state, said third means putting said switch signal in said second state for a predetermined duration after occurrence of a variation of the second information signal, said third means otherwise putting said switch signal in said first state;
• and
• switch means coupled with said third means and receiving the switch signal from said third means for supplying said display means with said first information signal when said switch signal is in said first state and with said memory signal when said switch signal is in said second state.

An apparatus comprising:

• first means for producing a first information signal representative of a first kind;
• second means for producing a second information signal representative of a second kind, a value of the information of said second kind being optionally variable;
• display means for displaying the information of any of at least said first and said second kinds;
• means for detecting a change in the value of said second information signal to produce a control signal when a change is detected;
• and
• switching means for switching the supply of a signal to said display means from said first information signal to said second information signal for a predetermined period of time in response to said control signal.