摘要:
A receiver is provided capable of receiving both RDS (Radio Data System) and DARC (DAta Radio Channel) system FM multiplex broadcasting. An RDS signal demodulating circuit is provided with a PLL circuit which comprising a first frequency divider for dividing an output of a crystal oscillator, a phase comparator for inputting an output of the first frequency divider, a low-pass filter connected with the phase comparator, a VCO connected with the low-pass filter, and a second frequency divider for dividing an output of the VOC and outputting the divided output signal to the phase comparator. An output of the VCO is transmitted as a reference clock RDSCL for demodulation of an RDS signal.
摘要:
An offset circuit (2) detects an offset word serving as a synchronization pattern. By being triggered by the detection, main and subordinate synchronization detection circuits (5 and 6) detect the periodicity of the offset word only during a predetermined backward guard period. Both synchronization detection circuits (5 and 6) detect offset words at different timings. Therefore, if one synchronization detection circuit (5 or 6) fails in detection of synchronization, it is possible to use a detection result of the other synchronization detection circuit (5 or 6). Moreover, received data during the backward guard period is stored in a data memory (11). Therefore, it is possible to use the stored data as received data after detection of synchronization. Even after establishment of synchronization, the synchronization detection circuit (5 or 6) continuously detects the periodicity of an offset word at a timing different from an established timing. Therefore, when established synchronization is incorrect, it can immediately be corrected.
摘要:
A polygonal mirror includes a base body having a circumferential surface composed of a plurality of plane surfaces or a columnar surface, a surface element, formed on the circumferential surface of the base body with a synthetic resin, whose circumferential surface is formed in a non-spherical shape, a reflection film formed on the surface of the surface element.
摘要:
A polymerization process is advantageously effected to provide product polymers substantially free of "fish eyes" in a polymerization vessel provided with a cooling jacket and/or cooling pipe system through which a liquefied refrigerant having specific ranges of saturation pressure, saturation temperature and boiling point characteristics is passed and is vaporized during the passage so as to effectively remove the heat of polymerization.
摘要:
A movable toy animal wherein an electric motor is set on a frame in a head and electrically connected to a battery in a trunk, gearing is operatively connected to the electric motor, an axially-movable change-over gear is meshed with a first output gear in the gearing and adapted to be engaged with and disengaged from a nose-driving gear, which is adapted to move a nose forward and backward and mounted fixedly on a crankshaft, a driving shaft having an input gear is meshed with a second output gear in the gearing, a cam disc is mounted fixedly on the driving shaft, the cam disc having on its inner side surface a projection adapted to urge a pressure-receiving portion of a slide shaft, on which the change-over gear is fixedly mounted, first and second cam plates of different shapes is mounted fixedly on both end portions of the driving shaft and connected operatively to operating members, which are adapted to move ears up and down, and a switch unit is provided in a rear portion of a head so as to constitute a part thereof, and which has a push element provided retractably and adapted to be pressed to actuate the electric motor.