Kabushiki Kaisha Toshiba

Toshiba Infrastructure Systems & Solutions Corporation

Toshiba Infrastructure Systems & Solutions Cirporation

Yuuki Funahashi

Seiki Katayama

Keiichi Yamaguchi

Atsushi Yamaoka

Yoshihiko Takahashi

Hideki Nagao

An amplification apparatus as the embodiment of the present invention includes a switching amplifier and an adjuster. The switching amplifier is driven on the basis of a control signal and amplifies an input signal to be amplified to generate an amplified signal. The adjuster adjusts at least one of the signal to be amplified and the control signal before being input into the switching amplifier. In addition, the adjuster adjusts so that timing when the control signal turns from LOW to HIGH aligns with timing when the signal to be amplified turns from LOW to HIGH, or aligns with timing when the signal to be amplified turns from HIGH to LOW.

Amplification apparatus and transmission apparatus

An amplification apparatus as the embodiment of the present invention includes a switching amplifier and an adjuster. The switching amplifier is driven on the basis of a control signal and amplifies an input signal to be amplified to generate an amplified signal. The adjuster adjusts the control signal before it is inputted into the switching amplifier. Specifically, the adjuster adjusts at least one of a pulse width of the control signal and a delay time of the control signal with respect to the signal to be amplified.

According to an embodiment, a broadcast continuation assistance device, includes a memory that stores broadcast audio data corresponding to input broadcast audio signals in a chronological order; and an output unit that reads, from the memory, based on an anomaly detection signal received from outside, the broadcast audio data corresponding to the broadcast audio signals that would have been broadcast during an anomaly detected period, and outputs the broadcast audio signals corresponding to the read broadcast audio data after an anomaly is resolved.

Broadcast of audio data based on input broadcast signals stored during a detected anomaly period by lightning energy

A calculation output unit of a digital amplitude modulation device calculates and outputs a protection index of an amplifier based on a combined output signal or an amplitude modulation signal. A first protection unit outputs to a control unit a first control signal to place an entire amplifier unit in an off-controlled state, based on the protection index. A second protection unit outputs, to the control unit, a second control signal to control an upper limit number of amplifier units that can be on-controlled in parallel and a third control signal to on/off control the upper limit number or less or the initial number of the amplifiers. The control unit on/off controls the power amplifiers based on an input sound signal, the first control signal, the second control signal, and the third control signal.

Digital amplitude modulation device and digital amplitude modulation control method

A digital amplitude modulation device includes power amplifiers, a compositor, a filter, a measurement unit, a protection unit, and a controller. The power amplifiers are arranged in parallel and amplify an input signal in accordance with ON control and stop output in accordance with OFF control. The filter suppresses an unnecessary component to generate an AM signal. The measurement unit measures a measurement value between the filter and a signal output terminal and output the AM signal generated by the filter. The protection unit includes a calculator and a first processing unit. The calculator is formed from an analog circuit and calculates an evaluation value based on the measurement value. The first processing unit is formed from an analog circuit and generates a first control signal by referring to the evaluation value. Upon receiving the first control signal, the controller OFF-controls the power amplifiers.

Digital amplitude modulation device and digital amplitude modulation method

A digital amplitude modulation apparatus is provided with a measuring section, a fast surge protection section, a slow vector protection section, and a controller. The measuring section detects a voltage and a current from an RF signal. The fast surge protection section calculates an SWR from a detection signal of the measuring section, and obtains a first upper limit of the number of power amplifiers which can be put into an ON state based on the SWR and generates a first control signal. The slow vector protection section obtains a reflection coefficient from the output detection signal of the measuring section, and obtains a second upper limit of the number of the power amplifiers which can be put into an ON state based on the reflection coefficient and generates a second control signal. The controller controls the power amplifiers to be ON/OFF.

Digital amplitude modulation apparatus and control method of digital amplitude modulation apparatus

According to one embodiment, a digital amplitude modulator includes a power supply unit, a measurement unit, a calculation unit, and a power controller. The power supply unit supplies a power supply voltage to a plurality of power amplifiers. The measurement unit measures the output power and reflection coefficient of a synthesizer. The calculation unit calculates loss power occurring in each power amplifier in an ON state, and reflected power consumed by each power amplifier in the ON state. The power controller controls all the power amplifiers to be in an OFF state, and performs a normal operation, and controls the input voltage of the power supply unit or ON/OFF of the plurality of power amplifiers.

Digital amplitude modulator and control method for digital amplitude modulator

According to one embodiment, a synthesizer for a transmitter includes a transformer, a plurality of core support units and a fixing member. The plurality of core support units includes a support plate, fixing unit and an insertion. The support plate supports a toroidal core around which the primary winding is wound. The fixing unit fixes the toroidal core to the support plate. The insertion portion is formed inside or around the toroidal core and into which the secondary winding is inserted. The fixing member includes a plurality of receiving portions to and from which the plurality of core support units are attached and detached. The plurality of receiving portions are formed along a direction in which the plurality of core support units are stacked.

Growing community of inventors

Fuchu, Japan

Yuuki Funahashi