Mazda Motor Corporation

Casio Computer Co., Ltd.

Toshiaki Kawanishi

Koji Terayama

Hiroyuki Sasaki

Kohtaro Hanzawa

Masatoshi Watanuki

Jun Yoshino

Seiji Hirano

Shiro Ishiguro

Yoshikazu Nobutoki

Hiroaki Sakamoto

Toshifumi Ikeda

A multiplex data communication system including a number of communication nodes interconnected through a transmission path, each of which includes a data transmitting/receiving circuit providing a reception signal representative of normal data reception from another communication node and a transmission signal representative of normal data transmission therefrom, and a data operation circuit for controlling an electronic equipment unit associated with each communication node based on the data from the other communication node and generating the data relating to each communication node which is transmitted by the data transmitting/receiving circuit, the data operation circuit making a judgement of normality of a data communication function of each communication node based on at least one of the data reception signal and data transmission signal.

Multiplex data communication system

The object of this invention is to provide a multiplex transmission system which can effectively reduce the traffic amount associated with digital information on a communication line and can improve the efficiency of digital information transmission during a period after the beginning of activation of each of a plurality of communication nodes connected to the communication line until the communication nodes are set in a normal operation state. The multiplex transmission system includes a communication line (11) for transmitting multiplexed digital information, and a plurality of communication nodes (12A, 12B, 12C) each of which incorporates an arithmetic processing unit, and performs an information output operation for outputting digital information onto the communication line (11), and an information fetching operation for selectively fetching digital information from the communication line (11). Upon activation of the plurality of communication nodes (12A, 12B, 12C), a communication node, which is set in a normal operation state earliest, of the plurality of communication nodes (12A, 12B, 12C) outputs digital activation information, and the remaining nodes are shifted to the normal operation state in accordance with the digital activation information.

Multiplex transmission system

An object of this invention is to provide a multiplex transmission system which can temporarily use an existing data area as a destination address area and an area for designating data to be transmitted when a communication node of the multiplex transmission system is started or reset, and can prevent unnecessary data other than designated data from being transmitted even when a data sendback request is issued to another communication node to which a transmission request is to be issued. In a multiplex transmission system in which a plurality of communication nodes A to E are connected via a multiplex transmission path MB, each communication node transmits a communication frame in which event data of, e.g., switch ON states of its own lamps, motors, and the like, via the multiplex transmission path MB, and the communication frame is received by all the communication nodes when a communication state is normal, when the communication node A at the transmitting side issues a data transmission request to another communication node D, the communication node A writes data representing that a frame F is a transmission request frame in an existing data area I, and the address of the communication node D which is to receive the frame F and ID(0) to ID(3) of data to be transmitted from the communication node D in data write areas D-0 to D-3, and transmits the frame.

A plurality of gateway nodes for connecting high- and low-speed networks as multiplex transmission lines include buffers for signal transmission and reception, communication ICs, and control units. A priority order in signal processing is set for these gateway nodes. Only a gateway node which operates normally and has the highest priority executes signal transmission between the high- and low-speed networks.

Multiplex transmission apparatus for supporting prioritized

When a plurality of effects are simultaneously applied to an input audio signal, a plurality of effect-algorithms each for applying solely an effect to the input signal are stored in a memory, and a plurality of combination-algorithms or combination-data which represent combinations of the effects and orders in which effects are applied to the input audio signal are stored in the memory. When one of the combination-algorithms or the combination-data is selected, effect-algorithms included in the selected combination-algorithm or combination-data are selectively read out from the memory. A program for applying effects in a predetermined combination and order is written by CPU based on the read out effect-algorithms and combination-algorithm or combination-data. Receiving the program, DSP successively applies effects to the input audio signal in accordance with the program. As a result, the present effector needs less memory capacity than the conventional effector in which a number of programs consisting of combinations of effect-algorithms are previously stored. A multi-effector comprised of a connection of a digital effect adding device and an analog effect adding device, is provided with a memory having a plurality of memory areas for storing audio signals. An input audio signal, an input signal to the analog effect adding device and an output signal of the digital effect adding device are stored in respective memory areas of the memory. Whether either of input signals is supplied to the digital effect adding device or whether the output signal of the digital effect adding device is input to the analog effect adding device or the output signal is output as a final signal are decided by operation of an externally operated switch. In this way, the order in which effects are applied can be altered independently of the connection of the above two effect adding devices.

Effect adding apparatus

A plurality of groups of tone parameters different in kind required for the generation of a musical sound is stored. The tone parameters of the same kind among those tone parameters are modulated with the same sway signal generated at the same time at a desired time or at fixed intervals of time when a key concerned is depressed. The modulated parameters are either restored in the original storage region or directly delivered to a sound source. The resulting musical sound has an acoustically natural comfortable tone quality. Even if musical sounds are generated simultaneously, no sways in the respective tones of the musical sound are canceled.

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Hiroshima, Japan

Toshiaki Kawanishi