摘要:
There is provided a power supply for an electrical device operable in active mode and in standby mode. The power supply comprises a transformer having a primary winding on the primary side and a secondary winding on the secondary side. The primary winding is connectable to an AC voltage supply and is arranged to comprise N turns when the electrical device is in active mode and more than N turns when the electrical device is in standby mode. Circuitry on the secondary side is arranged to provide an output voltage for the electrical device during active mode.
摘要:
A power supply (V1) for an electrical device comprising a transformer (X1) having primary and secondary windings. The primary winding is connectable to an AC voltage supply and circuitry on the secondary side is arranged to provide a DC output voltage for the electrical device. The power supply also comprises a switch (111—transistors Q1 & Q2) between the primary winding of the transformer and the AC supply, and a rectifier (Diode D6) for rectifying the AC voltage. The switch is arranged to switch on at some point as the rectified AC voltage increases, once it has reached a non-zero value, thereby providing a current flow through the primary winding and hence through the secondary winding when the switch (111—transistors Q1 & Q2) is switched off. The switch is further arranged to switch off before the rectified AC voltage starts to increase again.
摘要:
A communication apparatus includes a plurality of network connection units connected to a network. The communication apparatus (a) notifies an external device of a plurality of IP addresses assigned respectively to the plurality of network connection units so that the external device can select one of the plurality of IP addresses, and (b) releases the plurality of IP addresses except an IP address selected by the external device so that the communication apparatus can provide a service to the external device via the network using the IP address selected by the external device.
摘要:
A task cooperation processing method acquires a processing flow in which cooperation processing by a plurality of tasks is defined. Input information associated with the amount of data to be processed by the acquired processing flow is set. The task cooperation processing method calculates an estimation time required for the processing of the acquired processing flow on the basis of the input information. If the calculated estimation time is longer than a designated time limit, the function settings of each task in the processing flow are changed to make the calculated estimation time become equal to or shorter than the time limit.
摘要:
There is provided a load detector for determining whether a load is connected to an AC-AC power supply. The power supply comprises a transformer having a primary winding and a secondary winding, the primary winding being coupleable to an AC voltage supply via a switch, and the secondary winding being coupleable to a load. The load detector comprises a signal generator for generating a signal; a sensor for detecting the signal, the sensor being arranged to detect the signal if a load is coupled to the secondary winding and to not detect the signal if a load is not coupled to the secondary winding; and switch control circuitry coupled to the sensor and being arranged to keep the switch closed if the sensor is detecting the signal and to keep the switch open if the sensor is not detecting the signal. There is also provided an AC-AC power supply comprising such a load detector.
摘要:
A power multiplier system for an amplifier comprises a power multiplier control stage, an amplifier stage and a first switching stage connectable to the power multiplier control stage. The amplifier stage is connectable to the power multiplier control stage. The power multiplier system has a first output terminal and a second output terminal, the amplifier stage is connectable to the second output terminal for driving a load connectable between the first and second output terminals. The first switching stage is connectable to the first output terminal to apply a switchable DC voltage level to the first output terminal.There is also disclosed a method of amplifying the power output of an amplifier system.
摘要:
A layout processing method of dynamically changing the layout of a template having data areas in accordance with contents data presented to the data areas makes a choice of a layout adjustment algorithm to be applied to data areas from a retaining unit for retaining a plurality of layout adjustment algorithms to be applied to data areas and adjusts a layout of a data area in accordance with the chosen layout adjustment algorithm at the time of inserting the contents data in the data area. And it lays the contents data out and outputs them in the adjusted data area.
摘要:
This invention provides a coding method and apparatus capable of increasing the coding efficiency. According to this invention, an image processing apparatus which performs predictive coding using image data of a different frame as a reference picture includes a prediction unit which performs motion compensated prediction for each reference picture in at least one reference list formed from a set of reference pictures for prediction, a reference list update unit which updates the reference list by adding or deleting the reference picture, a reference counter unit which measures, for each reference picture, a count at which the reference picture is used for motion compensation predictive coding, and an update picture determination unit which determines a reference picture to be updated in the reference list by using the measurement result of the reference counter unit.
摘要:
There is provided an image processing apparatus which comprises an inputting part for inputting an image signal, an attenuating part for attenuating a predetermined frequency portion of the image signal inputted by the inputting part, and a controlling part for controlling an attenuation characteristic of the attenuating part for attenuating the predetermined frequency portion, in accordance with a compression ratio of the image signal inputted by the inputting part. There is also provided an image processing apparatus which comprises an inputting part for inputting an image signal, an enhancing part for enhancing a high frequency band of the image signal inputted by the inputting part, and a controlling part for controlling a high-frequency-band enhancement characteristic of the enhancing part in accordance with a compression ratio of the image signal inputted by the inputting part. There is also provided an image processing apparatus which comprises an inputting part for inputting an image signal, a discriminating part for making a discrimination as to a particular attribute of the image signal inputted by the inputting part, a generating part for generating an attribute signal indicating that the image signal inputted by the inputting part represents an image having the particular attribute, in accordance with an output of the discriminating part, and a combining part for combining an output of the generating part with the image signal.
摘要:
The present amplifier circuit employing floating error-cancellation technique eradicates errors and distortions by canceling them out at the speaker terminal. The circuit utilizes reference, main power, and error suspension amplifiers. The reference amplifier is a small signal amplifier with unity or near unity gain. The main function of the buffer amplifier is to provide a reference signal to be used to isolate the error signal. The main power amplifier is an inverting power amplifier without negative feedback, and whose main function is amplify the audio signal. The error suspension amplifier is a non-inverting power amplifier whose function is amplify the isolated error signal and provide an error potential to a speaker terminal so that the error can be canceled out at the speaker load.