摘要:
A wireless network communication system and method in which the wireless channel can be determined by selecting a vacant pseudonoise (PN) or spreading code. When communication is started, in order to judge whether a PN code is being employed by another communication group, the degree of correlation between the received signal converted to an intermediate frequency or a base-band frequency by a transceiver and a reference pseudonoise code signal is detected using a correlation circuit within a correlation detector. There is a channel controller which controls the PN code used by the communication terminal which receives an output of the correlation detector which correlates a received channel signal with a reference PN code generated by the PN code generator. If the correlation output signal is not smaller than a threshold value, it is determined that the PN code is to be employed. Furthermore, at the time of transmission, the pseudonoise code generator is controlled so as to supply the selected PN code to a transceiver. The transceiver combines the data to be transmitted with the PN code to be used in order to determine the final signal which is to be transmitted by the terminal.
摘要:
A wireless computer network communication system for use in an environment in which plural groups can perform network communication at the same time. A channel controller receives a requirement of starting network communication from a computer, controls a wireless channel sensor, and detects a received signal. The wireless channel detector detects which wireless channel is employed by one or more other networks and the channel controller determines the wireless channel to be employed by its own group and also controls the transceiver. The computer starts the network communication through a network controller. The network controller controls the transceiver for transmitting and receiving data by use of the wireless channel, and the same further controls the transmitting/receiving of the requirements and the data from the computer.
摘要:
A wireless network communication system and method in which the wireless channel can be determined by selecting a vacant pseudonoise (PN) or spreading code. When communication is started, in order to judge whether a PN code is being employed by another communication group, the degree of correlation between the received signal converted to an intermediate frequency or a base-band frequency by a transceiver and a reference pseudonoise code signal is detected using a correlation circuit within a correlation detector. There is a channel controller which controls the PN code used by the communication terminal which receives an output of the correlation detector which correlates a received channel signal with a reference PN code generated by the PN code generator. If the correlation output signal is not smaller than a threshold value, it is determined that the PN code is to be employed. Furthermore, at the time of transmission, the pseudonoise code generator is controlled so as to supply the selected PN code to a transceiver. The transceiver combines the data to be transmitted with the PN code to be used in order to determine the final signal which is to be transmitted by the terminal.
摘要:
An electromagnetic solenoid drive apparatus for use in a vehicle for turning on an electromagnetic solenoid from a battery every time when a command switch is turned on comprises first and second resistors connected in series to each other on an electric line for flowing an electric current through the electromagnetic solenoid; a first switching element turned on in a state in which an output voltage of the battery is lower than a predetermined threshold voltage and short-circuiting both ends of the first resistor; a timer circuit operated for only a constant time in association with the turning-on operation of the command switch; and a second switching element turned on during only the operating period of the timer circuit and short-circuiting both ends of the second resistor.
摘要:
A thermal transfer image-receiving sheet which comprises a substrate sheet and a receiving layer comprising a polyester resin provided on at least one surface of the substrate sheet, wherein the receiving layer is a layer formed by applying a coating solution comprising 1 to 3% by weight of a modified silicone oil (I) modified with both groups of an aminoalkyl group and a polyalkylene ether group, and 0.1 to 4.0% by weight of a curing agent based on 100 parts by weight of the polyester resin, and drying the solution, 0.2 to 3% by weight of a polyether-modified silicone oil (II) and/or phenol-modified silicone oil (III) being contained in the coating solution, if desired.
摘要:
Shape information of a molded article is used to determine cross sectional information. Injection speed pattern data is generated based on parameter information such as the cross sectional area of a barrel cylinder, the filling time interval, the injection stroke, etc., and the generated cross sectional information. The injection speed pattern data is used to control the injection speed of the injection screw.
摘要:
To provide a curl straightening method for image receiving paper for sublimation dye transfer, which is capable of realizing a smaller roll core diameter of the roll paper. The curl of an image receiving paper 100 for sublimation dye transfer having stiffness from 500 to 2,500 mg in a direction parallel to the printing direction, which is measured according to JIS L1085, JIS L1096, is straightened by allowing the image receiving paper 100 to pass through gaps 4a, 5a of a guide 3 that bends the image receiving paper 100 in a reverse curling direction.
摘要:
This invention provides a method which makes it possible to reliably detect malfunctions during the ejecting step without rendering the injection molding machine more complicated. An ejector pin is incorporated in the movable die. This ejector pin is connected, via an ejector plate, a connecting rod, a connecting plate and a feed screw, with a servo motor. The force for ejecting the ejector pin pushing a molded product is measured from the driving torque of a servo motor. In this invention, the relationship between driving torque and elapsed time from the initiation of ejection of the molded product is stored as a reference pattern. The tolerance limit and monitoring interval of driving torque are preset relative to the reference pattern. When the value of driving torque falls outside the tolerance limit during the ejecting step, it is judged as a malfunction, and an alarm is generated to stop the machine in a safe state.
摘要:
A printing method for use with a print system including a computer and a printer connected to the computer directly or by way of a network, the method including the steps of: directing the printer to effect printing and storage of a document prepared by the computer in an arbitrary combination of formats; transmitting the document to the printer; effecting receipt by the printer of the document transmitted from the computer; and effecting printing and storage of the document according to the instruction from the computer.
摘要:
A spread spectrum communication system includes a transmitter having: a data generator for generating a data signal; a pn generator for generating a first pn signal in accordance with a pn code clock; a modulator for modulating the pn code clock by synchronizing the data signal with a multiple N of one period of the first pn signal; a first part for detecting one period of the first pn signal; a second part for outputting a clock to the data generator in accordance with a converted period equal to a multiple N of the detected period; and an output part for transmitting a signal at an output of the pn generator, and a receiver which receives the transmitted signal, the receiver having: a second pn generator for generating a second pn signal in synchronism with the transmitted signal; a demodulator for demodulating the transmitted signal with the second pn signal; a third part for detecting one period of the second pn signal; a fourth part for outputting a timing signal in accordance with a converted period equal to a multiple N of the detected period; and a discriminator for detecting each bit of a demodulated signal in synchronism with the timing signal.