摘要:
Disclosed is a wireless transmitter/receiver provided with: a local oscillator which oscillates at a predetermined local oscillator frequency; a mixer which mixes a local oscillation signal of the local oscillation frequency outputted from an output terminal of the local oscillator and a radio signal received by an antenna; a modulation circuit which modulates the local oscillator signal and generates a radio signal; and a transmission/reception switching unit which selectively switches over between a reception state in which the output terminal of the local oscillator is connected to the mixer and a transmission state in which the output terminal is connected to the antenna without passing through the mixer.
摘要:
The wireless communication system includes a first wireless terminal (10A) and a plurality of second wireless terminals (10B). The first wireless terminal (10A) transmits a synchronization signal. The synchronization signal comprises a plurality of reference signals each including a reference data indicative of a relation between the corresponding reference signal and a reference time. The second wireless terminal (10B) includes a timer (13) configured to output an activation signal at a regular interval, a control unit (14), and a synchronization unit (15). The control unit (14) activates a wireless receiver (123) each time it receives the activation signal from the timer (13). When the wireless receiver (123) receives the synchronization signal, the synchronization unit (15) refers to the reference data obtained from the earliest reference signal and a reception time of the earliest reference signal, and determines the reference time. The synchronization unit (15) controls the timer (13) to output the activation signal after a lapse of a predetermined time from the reference time. The control unit (14) controls a wireless transmitter (122) to transmit a wireless signal during a period including a time period of receiving the activation signal from the timer (13).
摘要:
A power saving wireless fire alarm system has a master station and a plurality of battery-powered fire detecting cc terminals linked for wireless communication with each other. Upon detection of a fire occurrence at one of the fire detecting terminals, the fire detecting terminal transmit a fire detection message to a master station which in turn transmit a wake-up message to the other fire detecting terminals and thereafter a fire information message which starts a multiple synchronous communication between the master station and the fire detecting terminals. Each fire detecting terminal has a power controller which selects an intermittent reception mode of activating its own receiver only intermittently until receiving the wake-up message or information indicative of the fire occurrence, and select a constant operation mode thereafter to make the fire detecting terminals be ready for the multiple synchronous communication commenced by the fire information message from the master station.
摘要:
A hot isostatic press apparatus wherein a material to be processed such as preliminarily shaped metal powder is charged into a high pressure vessel provided with a heater and the material to be processed is pressed by superhigh pressure of fluid or gas sealed into the vessel and heating by a heater. The apparatus includes a main station including a high pressure vessel, a movable cover, a member for moving the material to be processed; one or more auxiliary stations including an inserting station, a preheating station, a removing station, etc.; a sealed tank; and transfer mechanisms for the material to be processed. The apparatus also includes a seal leakage detector.
摘要:
A radio communication system minimizes power consumption against noises. The system includes a first radio terminal (10A) with a first transmitter (40A) for transmitting a first data indicative of a specific event, and a second radio terminal (40A) with a battery (14B) and a receiver (20B). The first radio terminal (10A) includes a first bit interpolator (32A) which inserts a check bit pattern of “01010101” at a predetermined cycle into one frame of the first data. The second radio terminal (10B) has a second power controller (60B) which intermittently activates the second receiver (20B) at predetermined intervals in order to receive the bit-interpolated data from the first transmitter. A check bit detector (24B) is included in the second radio terminal (10B) to detect the check bit pattern from within the bit interpolated data and to issue a stop signal immediately upon occurrence of that the check bit pattern fails to appear at said predetermined cycle within a predetermined time frame shorter than one frame length of the first data. In response to the stop signal, the power controller of the second radio terminal terminates a current receiving operation.
摘要:
A contour emphasizing circuit is provided with a number-of-pixels changing circuit (37) which changes the numbers of pixels of digital R, G, and B signals, a gamma correction circuit (39) which performs gamma correction on the output of the circuit (37), a Y-signal generating circuit (36) which generates luminance signals from the output of the circuit (37), an contour extracting circuit (38) which extracts contour components from the output of the circuit (36), a coefficient multiplying circuit (42) which outputs contour components for R, G, and B by multiplying the extracted contour components by coefficients Kr, Kg and kb contour adding circuit (34r), (34g), and (34b) which respectively add the outputs of the circuit (39 and 42). Thus, the contour emphasizing circuit performs contour emphasis on the digital R, G, and B signals.
摘要:
Since A/D conversion circuits 30r, 30g and 30b to convert for output analog R, G and B signals to digital signals, a phase adjustment circuit 31 to output by delaying in the portion of 1 linc output signals of these A/D conversion circuits 30r, 30g and 30b, a first signal generation circuit 35 to generate Y signals from output signals of A/D conversion circuits 30r, 30g and 30b, a second Y signal generation circuit 37 to generate a Y signal from an output signal of the phase adjustment circuit 31, a contour extracting circuit 39 to extract a vertical contour component and a horizontal contour component from Y signals generated by first and second Y signal generation circuits, and contour adders 34r, 34g and 34b to output signals contour-emphasized adding a vertical contour component and a horizontal contour component extracted by this contour extracting circuit 39 to output signals of the phase adjustment circuit are provided, and since it has been designed that the contour extracting 39 extracts a vertical contour component and a horizontal contour component from Y signals generated by first and second Y signal generation circuits 35 and 37 , provided the line memory ncccssary for the contour extracting circuit 39 is made as 1 piccc, the power consumption can be made smaller, as well the cost can be loared.
摘要:
A contour emphasizing circuit is provided with a Y-signal generating circuit (36) which generates luminance signals from digital R, G, and B signals, a contour extracting circuit (38) which extracts contour components from the generated Y-signal, a coefficient multiplying circuit (42) which outputs contour components for R, G, and B by multiplying the extracted contour components by coefficients Kr, Kg, and Kb, addition circuits (34r, 34g, and 34b), and a contour emphasis enabling circuit (39) which controls the period for which contour components extracted by the extracting circuit (38) arc supplied. Therefore, the contour emphasizing circuit prevents process errors in the peripheral portion of the screen of a display.
摘要:
Described herein is an interlock system for an isostatic press machine of the type including a high pressure container having upper and lower closure plugs releasably received in upper and lower openings to be used for loading and unloading work therethrough, and a holder frame for supporting the axial force of the container in an isostatic pressing phase of the press operation, the holder frame being pivotally supported at one side thereof for swinging movements about a vertical axis into and out of a holding position in engagement with the high pressure container, wherein the interlock system is provided with a lock mechanism constantly urged to lock the holder frame in the holding position, and a control means adapted to control the lock mechanism to maintain the lock on the holder frame when the internal pressure of the high pressure container is higher than a predetermined level and to release the lock when lower than the predetermined level.
摘要:
The wireless communication system includes a first wireless terminal (10A) and a plurality of second wireless terminals (10B). The first wireless terminal (10A) transmits a synchronization signal. The synchronization signal comprises a plurality of reference signals each including a reference data indicative of a relation between the corresponding reference signal and a reference time. The second wireless terminal (10B) includes a timer (13) configured to output an activation signal at a regular interval, a control unit (14), and a synchronization unit (15). The control unit (14) activates a wireless receiver (123) each time it receives the activation signal from the timer (13). When the wireless receiver (123) receives the synchronization signal, the synchronization unit (15) refers to the reference data obtained from the earliest reference signal and a reception time of the earliest reference signal, and determines the reference time. The synchronization unit (15) controls the timer (13) to output the activation signal after a lapse of a predetermined time from the reference time. The control unit (14) controls a wireless transmitter (122) to transmit a wireless signal during a period including a time period of receiving the activation signal from the timer (13).