Abstract: A microwave heating cooker (1) includes a high-frequency power source (10). The high-frequency power source (10) includes a first semiconductor amplification circuit (amplifier) (3), a second semiconductor amplification circuit (amplifier) (4), an antenna (power supply unit) (5), a high-frequency generation unit (6), a commercial power source (alternating current power source) (7), a first full-wave rectification circuit (11), and a switching converter (12). The high-frequency generation unit (6) is configured from a commercial transformer (20), a second full-wave rectification circuit (21), resistors (22 and 23), an amplifier (24), an analog multiplier (amplitude modulation unit) (25), and a high-frequency oscillator (oscillator) (26), among others. The analog multiplier (25) modulates the amplitude of the output voltage from the high-frequency oscillator (26) with a signal wave that is in synchronism with a half-period of the cycle of the commercial power source (7).

Abstract: A frozen sushi pack includes: a container; and a plurality of sushi pieces arranged in the container. Each of the sushi pieces includes: a shari rice base; and a neta topping. Using a water content per unit volume ranging from 55% to 65% as a reference value, the sushi pieces in the container are classified into: first sushi pieces of a first group in which the neta topping contains a water content below the reference value; and second sushi pieces of a second group in which the neta topping contains a water content equal to the reference value or above.

Abstract: A heated product sales system includes a first apparatus configured to heat and cook a product; and a second apparatus configured to suspend a sale of the product until a certain time period has elapsed after the heating and cooking.

Abstract: A microwave heating cooker (1) is an example of a dielectric heating apparatus. The microwave heating cooker (1) includes a door that opens and closes a heating chamber, and a high-frequency power supply (10). The high-frequency power supply (10) includes: a high-frequency oscillation circuit (6); at least one semiconductor amplifier (3, 4) for amplifying a high-frequency signal from the high-frequency oscillation circuit (6); a door switch (9) (open/close detection unit) for detecting whether the door is open or closed; and a control unit (20) that stops the high-frequency oscillation circuit (6) when the door is opened.

Abstract: A microwave heating cooker (1) includes a high-frequency power source (10). The high-frequency power source (10) includes a first semiconductor amplification circuit (amplifier) (3), a second semiconductor amplification circuit (amplifier) (4), an antenna (power supply unit) (5), a high-frequency generation unit (6), a commercial power source (alternating current power source) (7), a first full-wave rectification circuit (11), and a switching converter (12). The high-frequency generation unit (6) is configured from a commercial transformer (20), a second full-wave rectification circuit (21), resistors (22 and 23), an amplifier (24), an analog multiplier (amplitude modulation unit) (25), and a high-frequency oscillator (oscillator) (26), among others. The analog multiplier (25) modulates the amplitude of the output voltage from the high-frequency oscillator (26) with a signal wave that is in synchronism with a half-period of the cycle of the commercial power source (7).

Abstract: In a process in which cooking is performed under a first heating condition under which superheated steam produced by a steam heater (4) is supplied to a heating chamber (2) to heat an object to be heated (7), when a steam detector unit detects that there is no steam produced in a water reservoir part (105), a control unit (5) ceases power supply to a water heater (103), performs switching to a second heating condition under which cooking is to be performed without supply of steam, and continues the cooking by the steam heater (4), without supply of steam.

Abstract: A liquid crystal display includes a liquid crystal display panel including a signal side substrate having an arrangement of a plurality of signal electrodes, a scanning side substrate positioned opposite to the signal side substrate and having an arrangement of a plurality of scanning electrodes crossing the plurality of signal electrodes, a liquid crystal layer positioned between the signal side substrate and the scanning side substrate, and a signal side driving circuit and a scanning side driving circuit for applying driving pulse voltage signals for displaying data to the plurality of signal electrodes and the plurality of scanning electrodes, respectively for driving these electrodes. When data is displayed, at least one of the driving pulse voltage signals is provided with a correction pulse voltage signal such that the effective voltage value of each part of the liquid crystal display panel attains an optimum level.