Abstract: A bus management node 11 has a register for channels in use REG1 and a bus capacity register REG2. Before starting the synchronous communication, each node 12 transmits a read-out command to the register for channels in use REG1 and the register for channels in use REG1 in order to read out their contents for ascertaining the number of the un-used channel and the residual capacity. If there is any un-used channel and any residual bus capacity, the node 12 transmits write commands to these registers REG1 and REG2 so that the number of the channel to be in use and the capacity of the bus to be in use will be stored in the register for channels in use REG1 and the bus capacity register REG2. This enables bus management to be achieved easily in a system performing synchronous communication between plural nodes connected to the bus.

Abstract: A bus management node 11 has a register for channels in use REG1 and a bus capacity register REG2. Before starting the synchronous communication, each node 12 transmits a read-out command to the register for channels in use REG1 and the register for channels in use REG1 in order to read out their contents for ascertaining the number of the un-used channel and the residual capacity. If there is any un-used channel and any residual bus capacity, the node 12 transmits write commands to these registers REG1 and REG2 so that the number of the channel to be in use and the capacity of the bus to be in use will be stored in the register for channels in use REG1 and the bus capacity register REG2. This enables bus management to be achieved easily in a system performing synchronous communication between plural nodes connected to the bus.

Abstract: A bus management node 11 has a register for channels in use REG1 and a bus capacity register REG2. Before starting the synchronous communication, each node 12 transmits a read-out command to the register for channels in use REG1 and the register for channels in use REG1 in order to read out their contents for ascertaining the number of the un-used channel and the residual capacity If there is any un-used channel and any residual bus capacity, the node 12 transmits write commands to these registers REG1 and REG2 so that the number of the channel to be in use and the capacity of the bus to be in use will be stored in the register for channels in use REG1 and the bus capacity register REG2. This enables bus management to be achieved easily in a system performing synchronous communication between plural nodes connected to the bus.

Abstract: A data transmitter capable of preventing illegal free reception of transmitted data by scrambling the same, and a data receiver adapted to descramble the received data properly despite any alteration of a scramble program. The data transmitter comprises a data source where predetermined data to be transmitted is stored; a circuit for generating a scramble program and control data; a circuit for scrambling the predetermined data in accordance with the scramble program; a circuit for generating a descramble program; and a circuit for transmitting the scrambled data, the descramble program and the control data to the data receiving terminal of each user or contractor. The control data includes a scramble key, and the scrambled data is transmitted via a satellite network or a CATV network, while the descramble program is transmitted via a telephone line.

Abstract: An information display method of transmitting predetermined information through a transmission path, receiving the transmitted information by a receiving apparatus, recording the information received by the receiving apparatus onto a recording medium, and displaying the information recorded on the recording medium to a display apparatus. Titles of a plurality of information are displayed. Only a predetermined number of predetermined ones of the titles are designated. The designated information is automatically and sequentially displayed. The information is associated with genres and the information is designated every genre. The information is multimedia news articles.

Abstract: A data broadcasting system for the low-cost delivery of character-heavy data such as newspapers and magazines. Newspaper or other data are transmitted from a newspaper publisher or service to an artificial satellite via a broadcasting center to be relayed to a subscriber. The subscriber receives the data by means of a receiver via an outdoor apparatus. The received data are sent to a recorder to be recorded on a recording medium such as a compact magneto-optical disc for later display.

Abstract: A precursor of a C-terminal amidated peptide represented by the general formula P-X-Gly-Y.sub.n, wherein P is a peptide residue. X is an amino acid residue the C terminal of which (on the Gly side) can be converted in vivo to a --CONH.sub.2 group. Gly is a glycine residue, Y is a basic amino acid residue, n is an interger of 2 to 4 and a further amino acid residue other than Y or a peptide residue may be attached to Y.sub.n, is produced by a gene engineering technology. The precursor exhibits in vivo physiological activity like the C-terminal amidated peptide.

Abstract: A bidirectional digital signal communication system includes a plurality of terminal units in communication with a center unit. Each of the terminal units includes a signal generator for generating digital data spread with a PN (pseudo-noise) code, a modulator for modulating the digital data on a carrier, and a transmitter for transmitting the modulated digital signal to the center unit through a transmission line. The center unit includes a receiver for receiving the modulated digital signal, a PN code generator for locally generating a PN code which corresponds to the transmitted PN code, a multiplier supplied with outputs of the receiver and the PN code generator to produce a digital signal de-spread from the PN code, a demodulator connected to the multiplier to reproduce the digital data from the modulated digital signal, and a memory for storing the PN code when the signal level of the multiplier exceeds a predetermined value.

Abstract: A mechanical press having twin working stations comprising a bed, a pair of bolsters mounted on both sides of said bed, four uprights extending upwardly from said bed, a frame structure mounted on said uprights, said frame structure having a pair of guide portions defined at both ends thereof, and a pair of slides slidably mounted in the respective guide portion of said frame structure, each of said slide structures being adapted to face with each of said bolsters.