摘要:
A wired circuit board includes a metal supporting board, an insulating layer formed on the metal supporting board, and a conductive pattern formed on the insulating layer. The conductive pattern includes an underlying layer formed on the insulating layer and a conductive layer formed on the underlying layer. The underlying layer is formed with a corroded portion corroded from a side end portion of the conductive layer toward an inner portion thereof. A semiconductive layer is formed on a surface of the insulating layer and on a surface of the conductive pattern. The semiconductive layer is formed so as to come in contact with the metal supporting board and have a cut formed in the corroded portion to interrupt conduction between the semiconductive layer formed on the surface of the insulating layer and the semiconductive layer formed on a surface of the conductive layer.
摘要:
An audio playback apparatus, an automatic player musical instrument and a voltage controller form an ensemble system for producing music tunes in ensemble between the audio playback apparatus and the automatic player musical instrument, and the voltage controller is responsive to a volume control dial so as simultaneously to vary the loudness of electric tones radiated from the audio playback apparatus and acoustic tones produced through the automatic player musical instrument; when a user rotates the voltage control dial, an audio signal and a quasi audio signal are amplified, the audio signal is supplied to the sound system for converting the audio signal to the electric tones, and the quasi audio signal is demodulated to MIDI music data codes for changing the velocity from the original value to a new value for producing the acoustic tones or electronic tones through automatic playing or composition of waveform data.
摘要:
A wired circuit board includes a metal supporting board, an insulating base layer formed on the metal supporting board, a conductive pattern formed on the insulating base layer, a first semi-conductive layer formed on the conductive pattern, an insulating cover layer formed on the first semi-conductive layer, and a second semi-conductive layer formed on the insulating cover layer. The first semi-conductive layer and the second semi-conductive layer are electrically connected to the metal supporting board.
摘要:
A wired circuit board that can remove static electricity not only from an insulating base layer and an insulating cover layer but also from a terminal portion, to effectively prevent an electronic component mounted from being damaged by static electricity and also prevent stripping of a semi-conductive layer. In a suspension board with circuit including an insulating base layer formed on a metal supporting board, a conductive pattern formed on the insulating base layer, and an insulating cover layer, formed on the insulating cover layer, to cover the conductive pattern and form an opening, semi-conductive layer is formed in succession on an upper surface of the insulating base layer covered with the insulating cover layer, on a lateral side surface and an upper surface of the conductive pattern, and on a lateral side surface of the insulating base layer adjacent to the metal supporting board.
摘要:
MIDI data words are supplied to a data transmitter of a music data transmitting system at irregular intervals; when the data transmitter receives each of the MIDI data words, the data transmitter checks the status byte to see whether or not the status byte contains a data nibble identical with a synchronous data nibble, replaces the data nibble with another data nibble with positive answer for producing a quasi MIDI data word, supplements synchronous data nibble or nibbles between the quasi MIDI data words, and modulates a data stream containing the quasi MIDI data words and the synchronous data nibbles for synchronously transmitting the modulated signal to a data receiver of the music data transmitting system at high transfer efficiency; when the modulated signal reaches the data receiver, the data receiver demodulates the received signal, eliminates the synchronous data nibbles from the data stream, and converts the quasi MIDI data words to the MIDI data words.
摘要:
A data transmission system for a vehicle includes a plurality of control systems installed on the vehicle, and a network bus connecting the plurality of control systems with each other for circulating a transmission right through the plurality of control systems to thereby perform transmission of a message between the plurality of control systems. According to a first aspect, each of the control systems starts transmitting data when it is detected that the transmission right is not generated or lost from the system, and continues transmitting the data when no collision of data transmitted from the present control system with data transmitted from the rest of the plurality of control systems, or when by mediation for avoiding the collision is detected, it is determined to continue data transmission. According to another aspect, the maximum number of times of retransmission to be permitted is determined according to a type of failure in transmission identified, and the retransmission is performed so long as the number times of retransmission of the data does not exceed the maximum number of times of retransmission to be permitted. According to a still another aspect, the message comprises a first response field for receiving a first acknowledging response output from a control system having received the transmission right, and a second response field for receiving a second acknowledging response output from a control system having received data.
摘要:
A speech analysis unit and a window locating unit are implemented in a speech encoding apparatus. The speech encoding apparatus encodes input speech per analysis frame defined having a fixed length and is offset at fixed interval. the speech analysis unit extracts frequency spectrum parameters of the input speech taken within an analysis window. The location of the analysis window is specified by the window locating unit. The window locating unit selects the location of the analysis window which is used in extracting the frequency spectrum characteristic parameters at the speech analysis unit. In this case, depending upon the characteristic parameter of the input speech within and near the frame concerned, the window locating unit selects the location of the analysis window within the range which is not to be exceeding the range of the frame concerned.
摘要:
A coin discriminator for discriminating good coins from bad coins among a plurality of different types of coins and sorting the coins by denomination has a cradle for selecting the coins in accordance with their diameter, and a swing lever which is urged in a direction toward the space between the two ends of the cradle. The swing lever biases a small coin so as to cause it to pass the space between the two ends of the cradle. A large coin urges the swing lever and is removed from the cradle.