Abstract: A multiplex transmission system includes a plurality of multiplex nodes interconnected by a common multiplex transmission line. Data frames are transmitted among the multiplex nodes through the multiplex transmission line. A data frame transmitted from a sending multiplex node includes a data area which is divided into subdivided areas in accordance with data transmitted therefrom and data transmitted from receiving multiplex nodes which send data in response to a send request, in accordance with the number of data pieces or the number of bits, and the receiving nodes send data to respective subdivided areas in a predetermined order, to thereby carry out a data transmission. Accordingly, the sending multiplex node can simultaneously collect data from the receiving multiplex nodes which are functionally subordinate. When any of the receiving multiplex nodes fails to return an ACK signal, the sending multiplex node retransmits the data frame.

Abstract: A semiconductor integrated-circuit card including a microprocessor having an active mode of operation capable of processing data and a low power consumption mode of operation disabled from processing data, the microprocessor being operative to (1) establish the low power consumption mode of operation in the IC card when the microprocessor is initially activated to start operation, (2) make a shift from the low power consumption mode of operation to the active mode of operation responsive to an interrupt signal from an external signal source, and (3) make a shift from the active mode of operation back to the low power consumption mode of operation upon termination of the data processing in the active mode of operation.

Abstract: A multiplex transmission apparatus including first-type control nodes connected to a multiplex transmission path, which generate a predetermined signal without operation process to received control information and generated information, and second-type nodes which perform the predetermined operation process to received control information and generated information, and generate a control signal. The first and second type nodes are appropriately used corresponding to control functions.

Abstract: A multiplex transmission system of this invention includes a plurality of multiplex nodes interconnected by a common multiplex transmission line. A frame of data is transmitted among the multiplex nodes through the multiplex transmission line. When a data frame transmitted from an air conditioner switch multiplex node (subnode) is received, an air conditioner unit multiplex node (main node), which is predetermined as a destination node, detects the contents of each data from an ID-a of the received data, performs a calculation on SOM to DATA 4 received, generates collation data (CRC) in accordance with the result of the calculation and transmits same. The subnode generates collation data (CRC), which is an error check code, through a calculation on the transmitted SOM to DATA 4, and compares the thus-generated CRC with the CRC received from the main node, to determine whether or not the data transmission was properly carried out.

Abstract: A multiplex transmission system of this invention includes a plurality of multiplex nodes interconnected by a common multiplex transmission line. A plurality of groups of different combinations of the multiplex nodes are predetermined, and a frame of data is transmitted among the multiplex nodes through the multiplex transmission line. The data frame includes a group specifying area specifying a group of nodes from which an acknowledge signal is to be returned. When a data frame transmitted from a sending node is received, each multiplex node determines whether or not it belongs to the group specified by bits in the group specifying area of the transmitted frame. When the data frame is properly received, only those multiplex nodes which belong to the specified group return the acknowledge signals to an acknowledge signal area in the data frame in accordance with the bits in the group specifying area, whereby the transmission efficiency is improved.

Abstract: An electrical harnessing structure for connecting to vehicle electrical components to an instrument panel, which is constituted by an instrument panel core to which the vehicle electrical components are mounted, and an instrument panel mount member for mounting the instrument panel core to a vehicle body component portion. The harnessing structure includes an electrical harnessing member divided at least into a first electrical harnessing member portion and a second electrical harnessing member portion, and consisting of a bundle of a plurality of electric wires, a first mounting member for mounting the first electrical harnessing member portion to the instrument panel mount member, a second mounting member for mounting the second electrical harnessing member portion to the instrument panel core, and a connect member for connecting the first and second electrical harnessing member portions to each other.

Abstract: The data storing system according to the present invention is used for a communication control circuit. The communication control circuit is equipped with a communication sequencer, which takes in a message to be transmitted to a multiplex bus, an ID table which registers data IDs of messages necessary for the station, and the first and second memory circuits which have memory areas keyed to the data IDs. When the communication sequencer takes in a message, it determines whether its data ID exists in the ID table. If the data ID exists and the frequency of occurrence is high, then data following the data ID is temporarily stored in a memory area keyed to a data ID of the first memory circuit. If the data ID exists and the frequency of occurrence is low, then the data following the data ID is temporarily stored in a memory area of the second memory circuit.

Abstract: A multipath transmission system according to the present invention comprises a plurality of multiplex nodes connected to two multiplex buses. Each of the multiplex nodes is assigned to a specific apparatus, and includes a communication control circuit (LSI) for fetching multiplex signals from the apparatus and transmitting the multiplex signals to the multiplex buses. One multiplex node, out of the plurality of multiplex nodes, includes communication control circuits driver/receiver circuits, and troubleshooting driver/receiver circuits, which are connected to the multiplex buses and used for signal transfer between the buses, and a microprocessor for troubleshooting the multiplex buses and the multiplex nodes. The multiplex node relays a failure signal, corresponding to the result of troubleshooting, to the other network which suffers no trouble.

Abstract: A device for controlling the current consumption of a power supply which applies a voltage to a transmission control circuit for transmitting a transmission signal with respect to a transmission line is provided. A power supply stabilizing circuit for stabilizing a voltage applied from the power supply; an amplitude detection circuit for detecting a transmission signal input from the transmission line; a switching circuit for interrupting application of a voltage from the power supply stabilizing circuit to the transmission control circuit; and a control circuit for controlling the open/closed state of the switching circuit according to the presence or absence of a transmission signal detected by the amplitude detection circuit are provided, and only when the amplitude detection circuit has detected the transmission signal, the control circuit sets the switching circuit into the closed state so as to permit a voltage to be applied to the transmission control circuit.

Abstract: In a connector system comprising a connector housing having a terminal chamber, a terminal member to be inserted into the terminal chamber, and a terminal retainer to be coupled to a rear portion of the connector housing in two stages, namely, in a first-step engagement and a second-step engagement, the terminal retainer comprising flexible pins extending toward the front side in the terminal chamber, the flexible retainer comprising an engaging end portion capable of being restored to an advance path of the terminal member, and the terminal chamber provided with a stopper for detecting unsatisfactory insertion of the terminal member, the stopper located on the front side of the flexible engaging end of the terminal retainer in the first-step engagement, the engaging end portion, when not restored due to unsatisfactory insertion of the terminal member, making abutting engagement with the stopper when the terminal retainer is tried to be moved to the second-step engagement.

Abstract: An integrated circuit for a vehicle, vehicle which is formed in the shape of a case and which includes a pair of circuit boards, and a connector electrically connected to another connector. Each circuit board includes a metal circuit board main body, defining an outer portion of the case, an insulating layer formed on the entire inner surface of the circuit board main body, a conductive layer formed on the insulating layer in a predetermined circuit pattern, and a plurality of circuit elements electrically connected to a predetermined portion of the conductive layer.

Abstract: A semiconductor integrated-circuit card including a microprocessor having an active mode of operation capable of processing data and a low power consumption mode of operation disabled from processing data, the microprocessor being operative to (1) establish the low power consumption mode of operation in the IC card when the microprocessor is initially activated to start operation, (2) make a shift from the low power consumption mode of operation to the active mode of operation responsive to an interrupt signal from an external signal source, and (3) make a shift from the active mode of operation back to the low power consumption mode of operation upon termination of the data processing in the active mode of operation.

Abstract: A dielectric housing (11) of an electrical connector (10) comprises a contact-receiving passageway (13) in which an electrical contact (25') is secured by a resilient housing lance (14). A locking member (20, 25) is movable along the passageway (13) and has a projection (21) that is positioned in a space (15) between the passageway wall (13a) and the housing lance (14) to prevent the housing lance from moving outwardly. A window (30, 31, 32, 33) is in the housing (11) and exposes a part (20b, 25b) of the locking member (20, 25) when the projection (21) is positioned in the space (15) thereby indicating the securing of the contact in the contact-receiving passageway.

Abstract: An electric connector which can prevent soiling to terminals thereof without the necessity of provision of an additional part such as a cap. The electric connector comprises a pair of female and male housings formed for fitting engagement with each other in one direction, a locking arm extending from the male housing in parallel to and resiliently displaceable in a direction perpendicular to the fitting direction, and a first engaging projection formed on the locking arm for fitting in an opening formed in the female housing. A first arresting element is provided on the female housing for engaging with the first engaging projection in a fully fitted position of the female and male housings to lock the housings in the position.

Abstract: An information card system according to the present invention establishes a data communication between a terminal unit and an information card after receipt of an acknowledge signal supplied from the information card to the terminal unit, and the acknowledge signal is produced by a combination of a periodical signal retrieving circuit and an output unit incorporated in the information card upon receiving a periodical signal fed from the terminal unit, so that a misfit between the information card and the terminal unit is detectable before the data communication.

Abstract: An electrical connector comprises matable connector housings (10,20) having matable electrical contacts (21), a shorting bar (22) in one of the connector housings (20) and having sloped sections (22A, 22B) with one of the sloped sections (22B) engaging the contact (21) in the housing (20) adjacent the shorting bar (22) when the connector housings are unmated, and a push-up projection (12) on the other of the connector housings (10) and having separate push-up projections (12A, 12B) for engagement with the respective sloped sections (22A, 22B) to push up the shorting bar (22) out of engagement with the contact (21) by one of the push-up projections even if the other push-up projection is broken when the connector housings are mated.