摘要:
Remote control apparatus for controlling a number of pieces of equipment in which each unit includes a microprocessor which produces a first remote control signal on its data bus line and an interface circuit including a first latch circuit which receives the first remote control signal from the data bus line of the microprocessor and a second latch circuit which receives a second remote control signal on its input terminal and transfers the second remote control signal to the data bus line of the microprocessor. A common input/output terminal receives the first and second remote control signals and a switching means is connected between the common input/output terminal and a reference point such as ground and the switching means is controlled by the first remote control signal to pass it to the common input/output terminal.
摘要:
An antenna for wireless apparatus which is placed in the vicinity of a conductive object is disclosed. The antenna for wireless apparatus includes a GND plate, a conductive plate parallel to the GND plate, two antenna elements, and two raising conductive plates. Each of the antenna elements includes a short-circuit conductive body and a radiation plate placed at an edge of the short-circuit conductive body. The two antenna elements are placed substantially parallel to a side surface of the conductive object with a distance of a half wavelength of a radio wave to be transmitted and received. The two raising conductive plates are placed close to the two antenna elements respectively and raise the conductive plate from the GND plate to a predetermined height.
摘要:
A wireless communication module is arranged such that a radio frequency circuit board stands vertically on a first earth plate. The radio frequency circuit board includes first and second radio frequency transmission and reception circuits at both end portions, respectively. The radio frequency circuit board includes a second earth plate serving as a grounding electric potential of the radio frequency transmission and reception circuits. Feed lines from the radio frequency transmission and reception circuits are connected to the first earth plate, respectively. Ground lines of the feed from the radio frequency transmission and reception circuits, respectively, are connected to the second earth plate. Thus, vertical exciting currents flow at both end portions of the second earth plane, enabling transmission and reception of vertical polarization waves.
摘要:
A motorcycle-detecting device according to the present invention is mounted on an automotive vehicle. The device includes ultrasonic sensors for detecting objects around the vehicle, a device for predicting that a motorcycle is approaching the vehicle, and a device for adjusting a detection distance and a detection sensitivity of the ultrasonic sensors. When the predicting means predicts a motorcycle approach, the adjusting device makes the detection distance longer than a normal distance and the detection sensitivity higher than a normal sensitivity. Illuminating devices may be mounted on the vehicle to make the motorcycle passing by visible. A warning may be given to a driver when a motorcycle passing by is actually detected by the sensors. Information regarding the detected motorcycle may be given to other vehicles. According to the present invention, the motorcycle passing by the vehicle is surely and stably detected to thereby avoid any traffic accident with the motorcycle.
摘要:
A motorcycle-detecting device according to the present invention is mounted on an automotive vehicle. The device includes ultrasonic sensors for detecting objects around the vehicle, a device for predicting that a motorcycle is approaching the vehicle, and a device for adjusting a detection distance and a detection sensitivity of the ultrasonic sensors. When the predicting means predicts a motorcycle approach, the adjusting device makes the detection distance longer than a normal distance and the detection sensitivity higher than a normal sensitivity. Illuminating devices may be mounted on the vehicle to make the motorcycle passing by visible. A warning may be given to a driver when a motorcycle passing by is actually detected by the sensors. Information regarding the detected motorcycle may be given to other vehicles. According to the present invention, the motorcycle passing by the vehicle is surely and stably detected to thereby avoid any traffic accident with the motorcycle.
摘要:
A signal level detector to detect the level of 1-bit digital signal is provided. It includes a level detector (12) supplied with a sequence of 1-bit digital signals decoded by an audio decoder (5) and which counts the number of 0 (zeros) or 1 (ones) included in the row of a predetermined number n of 1-bit digital signals to detect the level of the 1-bit digital signal, and an indication unit (13) to indicate the signal level detected by the level detector (12).
摘要:
An air flow rate measuring device for an internal combustion engine is disclosed. The air flow rate measuring device has a casing provided downstream from an air cleaner element for purifying intake air to the internal combustion engine, a duct connected fluidly to and downstream from the casing, and an air flow meter provided in said duct, for measuring an air flow rate taken into the internal combustion engine. A cross-sectional area of a connection portion between the casing and the duct, taken perpendicularly to the direction of air flow is the minimum cross-sectional area in the duct.
摘要:
A system wherein management data for managing allowance or unallowance (i.e., prohibition) of copies on a recording medium are recorded, and a time restriction condition, an area limiting condition, a condition for restricting a copy mode, etc. are managed on the basis of the recorded copy management data. When data are copied to different recording media, the copy management data are recorded together with the main data, thereby restricting the reproducing operation of the main data.
摘要:
A recording method for a disc-shaped recording medium formed by cementing two disc members having a recording layer on one surface, a diameter of approximately 12 cm and a thickness of approximately 0.6 mm, includes the steps of generating a digital audio signal that is generated by performing a .SIGMA..increment.-modulation for converting an analog audio signal with a sampling frequency set to a multiple of the standard compact disc sampling frequency fs=44.1 kHz, and recording the generated digital audio signal to the disc-shaped recording medium.
摘要:
Disclosed is an air flow rate measurement apparatus comprising a heating resistor and a temperature sensing resistor for detecting an intake-air flow rate to be sucked into an internal combustion engine, and a circuit module for outputting an electric signal corresponding to said intake air flow rate, said module being electrically connected to said heating resistor and said temperature sensing resistor. The apparatus is featured in that said heating resistor and said temperature sensing resistor are inserted together with an element for measuring an intake air temperature through an opening formed in the wall of an air passage so that said three elements are located in said air passage and the module is fixed to the air passage. The apparatus is of low cost and small sized.