A method for identifying a cooking level of a food load in an electromagnetic cooking device is disclosed. The method includes controlling a frequency and a phase of a first RF signal and a second RF signal and amplifying the first RF signal and the second RF signal thereby generating a first RF feed and a second RF feed. The method further includes emitting the first RF feed and the second RF feed into an enclosed cavity to heat a food load and measuring at least one reflection signal. The method further includes calculating a Q-factor for the enclosed cavity based on the reflection signal, monitoring the Q-factor, and identifying a change in the Q-factor exceeding a predetermined change threshold. In response to identifying the change exceeding the predetermined change threshold, a cooking level for the food load is identified.

Embodiments of the present disclosure relate to a cooking appliance using artificial intelligence and an operation method thereof. The artificial intelligence cooking appliance may include: a driving device for cooking a product to be cooked; an image sensor configured to obtain an image related to the product to be cooked; and at least one processor connected operatively to the driving device and the image sensor. The at least one processor may control the cooking appliance to obtain the image related to the product to be cooked, to obtain cooking information of the product to be cooked, on the basis of the image, and to cook the product to be cooked, on the basis of the cooking information.

A door assembly (6) for selectively providing access to, or closing, an oven cavity (5) of an oven appliance, the door assembly comprising: an outer pane element (9) comprising an at least partially transparent region; an inner pane element (10) spaced apart from the outer pane element comprising an at least partially transparent region; optionally one or more center pane elements (11, 12) located between the outer pane element and the inner pane element and comprising an at least partially transparent region; and a camera assembly (7) comprising an optical sensor (38) for obtaining image data from within the oven cavity; characterized in that the door assembly (6) further comprises: an aperture (25) which is provided in one of the pane elements (9, 10, 11, 12) and which accommodates the camera assembly (7).

A microwave oven includes a cooking chamber, a working panel, a scanner that reads a bar or QR code from a food package, laser emitters located on the upper panel of the cooking chamber, input voltage control unit and controller. The scanner is placed inside the cooking chamber on its upper panel. The scanner, laser emitters and input voltage control unit are connected to the controller. When a package containing a food product is placed into the cooking chamber, the laser emitters match the target marks applied on the food package to provide a fixed position of a bar or QR code located on the food package and enable the scanner to read the bar or QR code on the food package, enabling the microwave oven to prepare the food product according to a cooking program determined for the food product and encoded into the bar or QR code.

Disclosed are cooking methods using inspection systems including: a distance sensor and a digital optical recognition device. The distance sensor detects the position of the food product placed in the cooking device and the digital optical recognition device captures a series of images for the purpose of food product recognition. Once the food product is recognized, the operator is provided with the correct cooking cycle/program for the position and type of food product placed in the cooking device. The methods also ensure that the food product has been properly cooked at the end of the cooking cycle/program. The methods ensure: (1) the food product is correctly recognized; (2) the cooking cycle/program is correctly selected; (3) the correct cooking cycle/program is followed to completion; and (4) the quality of the cooked food product meets expected standards.

The present invention relates to a thawing-apparatus, in which a substance is preferably heated. The present invention further relates to a method to thaw a substance with radio-frequency waves.

There is provided a technique capable of stably form the film on a substrate regardless of machine difference or processing conditions. According to an aspect of the present disclosure, there is provided a technique that includes: (a) setting correction coefficients for correcting an output level of microwave; (b) storing correction tables containing the correction coefficients set in (a); (c) acquiring one or more correction coefficients from at least one correction table periodically from a start of outputting of the microwave; (d) calculating a correction value for an output preset level of the microwave from the one or more correction coefficients acquired in (c); (e) correcting the output preset level of the microwave by using the correction value calculated in (d); and (f) processing a substrate by supplying the microwave into a process chamber with the output preset level of the microwave corrected in (e).

A device includes an antenna configured to be disposed within a cavity of an appliance. The appliance includes an electrode and the antenna includes a sheet of conductive material having a surface area that is equal to or greater than a surface area of the electrode. The device includes a voltage sensor coupled to the antenna, an output device, and a controller coupled to the voltage sensor and the output device. The controller is configured to generate an output at the output device. The output is determined by a voltage of the antenna.

Method of irradiating a load placed in a cavity by radiating UHF or microwave radiation into the cavity. The method includes setting transmission durations, by setting for each of a plurality of frequencies, a respective transmission duration, repeatedly causing energy to be transmitted into the cavity at the plurality of frequencies according to a duty cycle, wherein the duty cycle defines an allotted transmission time for each of the plurality of frequencies, and switching ON or OFF transmission of the energy at certain frequencies, so that over a plurality of repetitions of the duty cycle the energy is transmitted at each of the plurality of frequencies for the respective transmission duration.

Microwave dryer of a print system with modulation of the microwave source using FSK. In one embodiment, a microwave dryer includes a microwave source coupled with a waveguide. The waveguide transports electromagnetic energy to dry wet colorant applied by a printer to print media. The microwave source provides the electromagnetic energy at an operating frequency. The microwave dryer also includes a processor coupled with an FSK modulator that modulates the operating frequency of the microwave source. The processor determines a modulating signal with a modulating frequency based on a period of time for the print media to traverse the waveguide, and applies binary values that represent the number of frequencies to an input of the FSK modulator to cause the FSK modulator to output the series of discrete frequencies over the period of time to vary intensity positions of the electromagnetic energy across the width of the print media.