Abstract: Control device for controlling a heating apparatus, such as a microwave oven. The microwave oven has a housing 12, an enclosure 16 in which a drawer 14 that receives a product to be heated slides, the microwave oven being actuated by a handle 15 and has optical and/or optoelectronic devices 21, 22 to read a distinctive sign 6 on either the product or its packaging. A processing module 30 is included to compare signals generated from reading this distinctive sign 6 with predetermined reference signals memorized in a storage device, and a supply module 43 generates operational control signals for the heating apparatus 10 in response to the result of this comparison. The optical and/or optoelectronic devices 21, 22 have a receiving cell 22 situated at the inlet and on the upper surface of the enclosure 16, the optical and/or optoelectronic devices being energized when the drawer 14 is pushed into the enclosure 16 to thereby effectuate a reading of the distinctive sign 6 on the product to be heated.

Abstract: An echography device with dynamic focusing and sectorial scanning, comprising a transmitting portion (16) and a receiving portion (18) constituting piezoelectric transducers (4), juxtaposed in a form of a linear bar (2), each transducer (4) being associated with a delay line (26,32), the delays applied when a wave is being received being determined as a function of a reference dependent on the delays when the wave is being retransmitted and stored in a digital memory (34), the said reference being fed into a frequency adjustable oscillator (42) associated with a servo-device (38, 56, 54) through a computer.