Abstract: To implement a key telephone system through an IP (Internet protocol) network, if real-time broadcast information is transmitted by multicast communications, restriction to prevent a rapid increase in network traffic is received, an additional special protocol is required, and it is hard to ensure the confidentiality of information. If real-time broadcast information is transmitted by unicast communications, transmission processing is centralized on a broadcast information transmission apparatus, the traffic becomes enormous, and a broad communication band and a high processing capability become necessary. Therefore, a transmission dedicated apparatus is provided between a broadcast information transmission apparatus and a terminal for distributing the transmission function and traffic. The broadcast information transmission apparatus needs only to manage the transmission dedicated apparatus. A plurality of terminals, etc., can be connected to the transmission dedicated apparatus.

Abstract: A pseudo noise generator includes a first arbitrary random number generator that generates two groups of first random number signals respectively corresponding to pre-divided Amplitude Probability Distributions, which are obtained by pre-dividing a specified Amplitude Probability Distribution into two parts at a specified level. A second arbitrary random number generator generates two groups of second random number signals respectively defined by a specified Pulse Duration Distribution and a specified Pulse Spacing Distribution at said specified level. One of the two groups of first random number signals are selected in accordance with the specified Pulse Duration Distribution and the specified Pulse Spacing Distribution defined at said specified level. The selected signals are converted, by a D/A converter, to pseudo noise of analog value in accordance with the Amplitude Probability Distribution, the specified Pulse Duration Distribution and the specified Pulse Spacing Distribution at the specified level.

Abstract: The invention provides a waveform information display apparatus, wherein the property of waveform data is grasped by the light of nature. Specifically, digital waveform data stored in a memory is split into a plurality of time segments, and compressed display data is generated in each of the time segments. A waveform is displayed on the screen by the compressed display data. Then, a property specified for the waveform is extracted from the digital waveform data in each of the time segments, and a value expressing the specified property in the time segment is obtained on the basis of the extracted property. Further, a waveform display portion in each of the time segments displayed on the screen on the basis of the compressed display data in each of the time segments is displayed in a state wherein the obtained value expressing the property is reflected on the waveform display portion.

Abstract: A baseband digital IQ signal modulated by digital information and a spread spectrum IQ code sequence whose auto-correlation side lobe is equal to zero are frame-synthesized with each other to obtain a transmission baseband IQ signal. A modulated radio-frequency wave obtained by modulating a radio-frequency wave is transmitted over a radio transmission line. From a received baseband signal obtained by receiving the modulated radio-frequency wave is separated a received signal of the spread spectrum IQ code sequence and a received signal of the baseband digital-modulated IQ signal. A waveform equalized signal which is obtained by waveform-equalization of the received signal of the baseband digital modulated IQ signal is demodulated by the use of transmission parameters of the radio transmission line derived from a despread spectrum signal obtained by dispreading the spread spectrum IQ code sequence, to obtain a received data signal of the digital information transmitted from the transmitting side.

Abstract: An analog switch circuit is disclosed. A plurality of cell switches (10) and load resistors (33, 34) are employed. One of cell switches (10A) is active and another (10B) is nonactive by controlling switches (15). Each of cells includes two pair of common-base transistors (3 to 6), which are inserted between a differential amplifier (1, 2) and load resistors (33, 34). Each of bases of common-base transistors (3 to 6) isolate the collector from the base. Thereby, effects of collector-to-emitter capacitances of nonactive transistors are decreased in high frequency range. The remarkably small leakages are canceled out by paired transistors 5 and 4, and, 6 and 3. Thus, the cross-talk between 21a, 22a and 21b, 22b is eliminated.

Abstract: An amplifying circuit with a level-shift circuit is disclosed. An amplifying unit includes two stages of differential amplifiers cascadedly connected. A differential amplifier of the first stage has a pair of differential input terminals. The differential amplifier of the last stage has a pair of differential output terminals. A level-shift circuit constituted of a couple of level-shifters is connected to the output terminals. The level-shift circuit level-shifts the DC level of the differential output from the amplifying unit. The level-shift circuit has a pair of output terminals to deliver the level-shifted differential output. A DC-dummy dummies the DC operation of the differential amplifier of the last stage. The DC-dummy has the power supply in common with the differential amplifier of the last stage. A level-shifter shifts the output level from the DC-dummy and delivers the level-shifted dummy output.

Abstract: An amplifying circuit with a level-shift circuit is disclosed. An amplifying unit includes two stages of differential amplifiers cascadedly connected. A differential amplifier of the first stage has a pair of differential input terminals. The differential amplifier of the last stage has a pair of differential output terminals. A level-shift circuit constituted of a couple of level-shifters is connected to the output terminals. The level-shift circuit level-shifts the DC level of the differential output from the amplifying unit. The level-shift circuit has a pair of output terminals to deliver the level-shifted differential output. A DC-dummy dummies the DC operation of the differential amplifier of the last stage. The DC-dummy has the power supply in common with the differential amplifier of the last stage. A level-shifter shifts the output level from the DC-dummy and delivers the level-shifted dummy output.

Abstract: A wave-form observation apparatus i.e. a digital oscilloscope configured to store and display wave-forms being displayed by a simple operation is disclosed. The analog input picture signal 1 includes wave-forms, characters and figures with their intensity information. The analog signal 1 is A/D converted to a picture data 2. A subtracted picture data 3 is obtained by subtracting a predetermined value from an intensity of the stored picture data 7. Two intensities of the data 2 and 3 are compared. In a ready state for the memory operation, the predetermined value is set to zero, By pushing a button 16, the picture data 2 having strong intensity is selected in the switch S2 to obtain intense picture data 6. Thereafter the switch S2 selects the data 3 which is equal to the intense picture data 6 in their intensities. Thus the stored picture data 7 is repeatedly displayed in the memory operation.

Abstract: An oscilloscope intensity regulation apparatus is disclosed. The oscilloscope displays wave-forms with the regulated intensity in spite of various wave-form repetition rates or sweep ranges. The scope has a CCD sensor 11 on a CRT 10. The CCD output 28 is applied to a video circuit 12 delivering a video signal 29. The CPU 4 instructs an intensity of an electron beam to a Z-axis circuit 8 and an AGC (automatic gain control) revision signal 27 to a AGC circuit 13 in accordance with an intensity input signal 21. The AGC circuit 13 controls its gain for amplifying a video signal 29 from the CCD 11 via the video circuit 12. When the video signal 29 is small in its amplitude, the AGC circuit 13 has a large gain. When the video signal 29 is large, the circuit 13 has a small gain. Therefore, an intensity of wave-forms being displayed is regulated in the intensity desired, in spite of various repetition rates of the wave-forms or sweep velocities.

Abstract: A vertical deflection system for a CRT is disclosed which has a pair of traveling wave deflectors disposed opposite each other across a path of beam from gun to target. Each deflector has a helical conductor in the for of a strip of sheet metal coiled around an elongate core of insulating material. For the provision of a CRT capable of handling a wide band of frequencies, the dispersion characteristic of each traveling wave conductor is optimized through adjustment of the specific dielectric constant of the insulating core. Preferred values of the specific dielectric constant are specified in relation to the characteristic impedance of the traveling wave conductor.

Abstract: A fixing device for a wet type master sheet making apparatus for making a master sheet has a heated panel for fixing and drying a developed image on the master sheet while the master sheet moves on the panel, and a cleaning web placed between a surface of the panel and the master sheet to absorb extra developing liquid on the master sheet while the master sheet moves on the panel. The fixing device has web winding means for winding the web to move the web along the surface of the panel, and actuating means for selectively actuating the winding means by one of manual and electrical operations. Therefore, the user can easily and quickly tension the cleaning web to make the cleaning web tightly contact the surface of the panel by manually actuating the winding means when the cleaning web is replaced.

Abstract: A fixing apparatus for a wet-type plate making machine, which includes panel heaters 13 and 14 for fixation and drying of an electrostatic latent image an a front surface of a master X after development with developing solution and a cleaning web 20 that is laid over top surfaces of the aforenamed panel heaters 13 and 14 and that will be wound around a web take-up bobbin 20B that is disposed at an end of the same panel heater 14, and which also includes a web take-up shaft 27 that has a bobbin attachment and 27a for supporting of the aforenamed web take-up bobbin 20B and a manual operation end 27b that can be turned freely with finger tips, a first one way clutch 31 that is fitted on the take-up shaft 27 and that transmits revolving movements of a clutch sleeve 31a that is reciprocally revolved by a solenoid 29 at the apparatus securing part but transmits only those in one direction to the aforenamed take-up shaft 27, and a second one way clutch 36 that in fitted on the take-up shaft 27 and that allows forced

Abstract: A large bandwidth analog isolation circuit is disclosed. Isolation transformers (11, 12) isolate the nonfloating side on the right hand from the floating side on the left hand. The input signal (1a, 1b) and a high frequency sinusoidal signal (3a, 3b) via a transformer (16) from an oscillator (18) are applied to a multiplier (20). The floating multiplied signal is supplied to a nonfloating multiplier (60). Thereby, the signal (6a, 6b) is multiplied by the high frequency sinusoidal signal (8a, 8b). The nonfloating multiplied signal (9a, 9b) is obtainable and is filtered (67, 68) to send out the output signal (2a, 2b) reproduced from the input signal (1a, 1b). Thus, replica of the input signal is obtained in the nonfloating side.

Abstract: A method and apparatus for detecting a defect of an object to be measured that has a first section having a first plate part and a second plate part which has a plate surface opposite to a plate surface of the first plate part and is integral with the first plate part or is connected to the first plate part and a second section that is united integrally with the first section or is bonded to the first section. The object to be measured has an intersection part formed between the plate surface of the first and/or second plate part of the first section and the surface of the united part of the second section with the first section, any defect formed in the intersection part being detected. Further, if the first section is a major working section, the life of the object to be detected is detected by detecting deterioration of the first section.

Abstract: A method and apparatus for detecting a change in the state of a part of an object to be measured that has a section having a first plate part and a second plate part which has a plate surface opposite to a plate surface of the first plate part with a gap between the plate surfaces and is integral with the first plate part or is connected to the first plate part.

Abstract: The dimensions of a magnetized pattern formed on a recording medium are varied, thereby causing the amount of toner attracted to the recording medium to vary, and thereby adjusting the printing density. This type of variation of the dimensions of the magnetized pattern is preferably achieved by varying the pulse width, that is, the duty cycle, of the recording clock which is supplied to a latent image recording circuit. This printing density adjustment method enables stable adjustment of the printing density.

Abstract: A desensitizing solution for offset printing is provided, which is characterized by containing an inorganic ionic polymer of basic aluminum chloride or a derivative thereof, represented by the general formula ?Al.sub.2 (OH).sub.n Cl.sub.6-n !.sub.m where 0<n<6 and m>1. The amount of basic aluminum chloride or a derivative is 5 to 50% by weight and the pH of the solution is 2 to 5. This solution can be free from a ferrocyanic or ferricyanic compound but provide a hydrophilic coating layer with a strong physical strength on a non-image area.

Abstract: A method and apparatus for detecting a defect of an object to be measured that has a first section having a first plate part and a second plate part which has a plate surface opposite to a plate surface of the first plate part and is integral with the first plate part or is connected to the first plate part and a second section that is united integrally with the first section or is bonded to the first section. The object to be measured has an intersection part formed between the plate surface of the first and/or second plate part of the first section and the surface of the united part of the second section with the first section, any defect formed in the intersection part being detected. Further, if the first section is a major working section, the life of the object to be detected is detected by detecting deterioration of the first section.

Abstract: This invention relates to a desensitizing solution for offset printing which is used for desensitizing an original plate for offset printing. The desensitizing solution of the present invention contains a basic aluminum chloride and/or its derivatives and glucosamine and/or its derivatives. This desensitizing solution can be used in combination with a desensitizing solution for offset printing which consists of phytic acid and its derivatives as the principal components.