摘要:
A spread spectrum receiver includes, for example, a correlator consisting of two convolvers whose correlation outputs are applied to a demodulator respectively via two variable gain amplifiers whose gains are controlled in response to a demodulation output from the demodulator.
摘要:
A phase shifter includes first and second series-connected resistor circuits each including first and second resistors and each interposed between each one of two input terminals and each one of two output terminals, and includes capacitors each interposed between each one of medium points of the series-connected circuits and each one of two output terminals. The phase shifter also establishes a relationship of RgRl=R.sup.2 where the value of the first resistor is Rg/2, the value of the second resistor is R, and the output resistance between the two output terminals is Rl.
摘要:
A PSK demodulator demodulate a PSK signal into a digital data, which PSK signal is an encoded signal comprising a carrier phase shifted by a digital signal data. The PSK demodulator comprises: a reference signal oscillator; first multiplier which multiplies the PSK signal and first reference signal supplied from the reference signal oscillator and having the same frequency as that of the carrier, and provides first low pass component as a carrier phase data as the result of the multiplication; second multiplier which multiplies the PSK signal and second reference signal supplied from the reference signal oscillator and having 90 degrees phase difference from the first reference signal, and provides second low pass component as another carrier phase data as the result of the multiplication; analog-to-digital converters which convert the first and second low pass components to digital signals; memories which store the digital signals from the analog-to-digital converters for a time corresponding to one symbol; and a discriminator which compares each digital signal with the one symbol preceding digital signal stored in the memories and discriminates whether the phase difference between the two digital signals is .theta. or .theta..+-.180.degree..
摘要:
A printing apparatus comprising a print wheel having a multiplicity type elements, and a detecting unit for detecting angular positions of the print wheel including its fixed home position. The apparatus further comprises a control unit which includes a first counter which stores data representative of an angular distance of a type element currently located at the printing position as measured from the home position, and a second counter which stores data representative of an angular position of a type element designated by a print signal. Both counters are operated as they receive position signals from the detecting unit. The control unit is so arranged that in the event of an unexpected rotation of a wheel driving rotary shaft which is not a result of the actuation of a wheel driving motor in response to the print signal, the print wheel is first reset to the home position before it is rotated to bring a designated type element to the printing position, whereby chances for printing errors due to such unexpected rotation are eliminated. A method for controlling to prevent the printing errors is also disclosed.
摘要:
A system for eliminating a noise from a stereo signal is disclosed comprising first and second signal paths to which an input stereo signal is applied simultaneously, storage means provided in the first signal path for storing an audio signal component, a pilot tone signal component and a sub-signal component of the stereo signal, the output of the storage means being grounded through a switch that is on when no noise exists, said switch being turned off when a noise exists in the stereo signal and extracting only the noise component by cancelling each signal component by its counterpart stored in the storage means, said noise component being phase inverted to be applied to the output of the second signal path.
摘要:
A fixing jig includes a pedestal including a placing surface on which a columnar honeycomb structure is placed, holding members fixed to the pedestal and configured to hold a side surface of the honeycomb structure placed on the placing surface, and drawing and fixing members fixed to the pedestal and configured to draw and fix the surface on the pedestal side in the outer circumferential portion of a mask placed on the honeycomb structure. Consequently, the fixing jig can fix the honeycomb structure and the mask aligned with each other and is less likely to hinder the alignment of the mask.
摘要:
A method for manufacturing a honeycomb-structured object having a plurality of through holes having ends thereof plugged, including a step of pressing a plugging material against one end surface of a honeycomb-structured object 70 having a plurality of through holes 70a by a plate 20 to fill one ends of the through holes 70a with the plugging material; and a step of protruding a part of a portion in the plate 20 opposed to the one end surface of the honeycomb-structured object 70 toward the one end surface to pull the other part of the portion in the plate 20 opposed to the one end surface of the honeycomb-structured object 70 and the one end surface away from each other.
摘要:
To provide a method for manufacturing a honeycomb structure with which it is possible to flexibly cope with a change in the outer diameter of a honeycomb formed body including through-holes that should be plugged, a plugging failure less easily occurs, and it is possible to easily manufacture a honeycomb structure in which desired through-holes are plugged. The method for manufacturing a honeycomb structure includes a step for arranging a mask 170 including a plurality of openings 171 on an end face of a columnar honeycomb formed body 70 including a plurality of through-holes 71 such that the plurality of openings 171 are respectively opposed to the plurality of through-holes 71 of the honeycomb formed body 70 and arranging a ring 270 having an inner diameter substantially the same as the outer diameter of the honeycomb formed body 70 on a surface on the opposite side of the honeycomb formed body 70 side of the mask 170 to cover the openings 171 of the mask 170 located further on the outer side than the outer circumference of the honeycomb formed body 70 and a step of supplying a plugging material to the inner side of the ring 270 and filling the plugging material in the through-holes 71 of the honeycomb formed body 70 via the openings 171 of the mask 170.
摘要:
There is provided a tape printing device capable of using long tape-like print media such as label tape having a plurality of label areas as targets of printing arranged on a long support tape along the length of the support tape and normal tape allowing printing at any position on a long tape-like image receiving medium, comprising judgment means for judging whether the print medium currently used is label tape or normal tape and feed cut control means for performing a feed cut operation of feeding the print medium and thereafter cutting the print medium. The feed cut control means includes feeding distance control means for controlling feeding distance before the cutting in the feed cut operation depending on the judgment by the judgment means.
摘要:
According to one mode of the present invention, a wire harness holding device is disclosed. The wire harness holding device has an electric wire holding portion for holding a predetermined portion of a wire harness; an opening/closing member attached to the electric wire holding portion; and a drive unit for driving the opening/closing member to one of the positions at a predetermined timing. The opening/closing member is movable between the surrounding position where the opening/closing member locks up a wire harness in the electric wire holding portion, and the release position where the opening/closing member releases the wire harness from the electric wire holding portion. Unless the drive unit is operated, the opening/closing member is maintained at the release position or the surrounding position.