Abstract:
The OD servers, encoders, NOD servers and CPUs supply voice data, character data and remote control data together with the control information. A transmitter modulates the control information and voice data, etc. by the QPSK modulation method. An infrared ray emitter outputs the modulated infrared ray depending on the modulated signal. A receiving apparatus reproduces acoustic signal from the modulated infrared ray and displays characters and also transmits the signal corresponding to the remote control data to the transmitting apparatus with the infrared ray. An infrared ray detector receives the modulated infrared ray output from the receiving apparatus. Thereby, with this system, the signal, required by the receiving side or suitable for the condition of the receiving side, supplied through many channels can be transmitted without any restriction on the wiring.
Abstract:
The OD servers, encoders, NOD servers and CPUs supply voice data, character data and remote control data together with the control information. A transmitter modulates the control information and voice data, etc. by the QPSK modulation method. An infrared ray emitter outputs the modulated infrared ray depending on the modulated signal. A receiving apparatus reproduces acoustic signal from the modulated infrared ray and displays characters and also transmits the signal corresponding to the remote control data to the transmitting apparatus with the infrared ray. An infrared ray detector receives the modulated infrared ray output from the receiving apparatus. Thereby, with this system, the signal, required by the receiving side or suitable for the condition of the receiving side, supplied through many channels can be transmitted without any restriction on the wiring.
Abstract:
PROBLEM TO BE SOLVED: To dynamically optimize the output level of a carrier signal. SOLUTION: In a level control circuit 1, a level reduction section 1a calculates the adjustment level, resulting from reducing the set level for control, used for controlling a current output level of a carrier signal. A comparison section 1b compares the actual input level of an input signal with the adjustment level and determines which level is higher. Based on the determination result of the comparison section 1b, a selection section 1c selects the higher of the input level or the adjustment level, as a set level to be used for controlling the output level of the carrier signal. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a pulse-width modulating circuit etc., improving efficiency of a power amplifier. SOLUTION: A ring counter unit 1a outputs a cycle count which varies between an initial value and a maximum value in a cycle shorter than the frequency of a PWM signal to be generated. Further, when the count value reaches the maximum value, a reset signal is outputted to a sampling data holding unit 1b and a PWM output unit 1d. The sampling data holding unit 1b, the reset signal is once inputted holds current modulated ultrasonic data as sampling data. A comparator 1c compares the sampling data with the cycle count, and outputs a coincidence signal to the PWM output unit 1d when their value match each other. The PWM output unit 1d generates the PWM signal having a pulse width corresponding to the generation interval between the reset signal and coincidence signal and outputs the PWM signal. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a voice input output device with which voice of an attendee can clearly be heard from a loudspeaker of an opposite party at a distant place in a video conference and which enables reduction of a load and cost of development of an echo canceller. SOLUTION: In the voice input output device (microphone/loudspeaker integrated device), a plurality of directive microphones 1a, 1b, etc., are placed in front of a loudspeaker 6 so that the direction of the directivity is directed nearly orthogonal to a front axis of the loudspeaker 6, and a reflection member 4 for reflecting a sound outputted from the loudspeaker 6 in a direction nearly orthogonal to the front axis of the loudspeaker 6 and a separation member 3 parting the loudspeaker 6 from the directive microphones 1a, 1b, etc., are provided between the loudspeaker 6 and the directive microphones 1a, 1b, etc.
Abstract:
PROBLEM TO BE SOLVED: To transmit signals which are requested by a reception side without restriction of wirings, or are fitted to the state of the reception side and are supplied by a plurality of channels. SOLUTION: OD servers 11-1 to 11-i, encoders 12-1 to 12-j, an NOD(near on demand) server 13 and CPU 16-2 and 16-3 supply sound data, character data and remote control data with control information. A transmitter 21 QPSK (quadrature phase shift keying) modulates supplied control information and sound data. An infrared emitter 22 outputs a modulated infrared ray based on a modulated signal. A reception device 2 reproduces sound from the modulated infrared ray from the transmission device 1, displays a character and transmits a signal corresponding to remote control data to the transmission device 1 by the infrared ray. An infrared detector 24 receives the modulated infrared ray which a reception device 2 outputs.
Abstract:
PURPOSE:To obtain a driver for a motor in which a control program of a control circuit for controlling an entire operation can be simplified by driving the motor according to drive command information selected in response to a command by a subcontrol circuit. CONSTITUTION:A subCPU 10 of a driver 1 for a motor receives a command CMD through an interface 12, and accesses a read-only memory 14 according to the command CMD. The memory 14 stores a control program and a pulse motor drive command information. The subCPU 10 selects the pulse motor control command information corresponding to the command CMD according to the control program, and outputs control information to a driver 16 based on the selected command information. The pulse motor is finely controlled under preset conditions according to the command CMD sent from a main controller 2. Accordingly, the command information can be deleted from the control program, and can be simplified that much.
Abstract:
PROBLEM TO BE SOLVED: To provide a voice input device and method which enable voice of an attendee to clearly be heard from a loudspeaker of an opposite party at a distant place in a video conference. SOLUTION: Two sets of two directive microphones 1a, 1b and 1c, 1d where the directivity of the microphones 1a, 1b (1c, 1d) is placed opposite to each other and the directivity of the microphones 1a, 1b and that of the microphone 1c, 1d are deviated from each other, are provided with elimination means 22a to 22d, 23, 24 for eliminating the in-phase sound component from the sound picked up by the two microphones of the same set, extraction means 25a to 25d for extracting a sound component of voice band from the sound picked up by each microphone, an arithmetic means 26 for obtaining a difference between levels of the sound components extracted by the extract means and determining one of the two microphones which has a greater level in the two microphones of the set whose level difference is highest, and selection means 27a to 27d for selecting a voice resulting from eliminating the sound component by the elimination means from the sound picked up by the microphone determined by the arithmetic means.
Abstract:
PURPOSE:To easily obtain geometric dimensions of a magnetic head with high accuracy, by image-picking up a gap of the magnetic head in the same picture, and extracting position co-ordinates by processing a picture. CONSTITUTION:A gap part of a magnetic head is magnified by a microscope, a magnified image is image-picked up in the same picture by an ITV camera, etc. of 512 horizontal scanning lines, becomes a video signal at every horizontal scanning, is divided into 512 picture elements by an A/D converting part 1, and is converted to a digital data by quantizing the degree of light and darkness. The converted video signal is written in a 4H memory part 2. A differential calculation is executed in an operating part I 3, digital conversion and a differential calculation in the (x) and (y) directions are executed in an operating part II6, an evaluating calculation is executed in an operating part III11, frequency is calculated in an operating part IV13, and position co- ordinates are subjected to arithmetical mean and are made position co-ordinates. The number calculation for satisfying the condition is executed in an operating part V15, picture processing by the evaluating calculation is executed in an operating part VI18, position co-ordinates are decided by te same calculation as the operating part IV13, in an operating part VII20, and geometric dimensions are calculated in accordance with true extracted position co-ordinates, in an operating part VIII21.