Abstract: A push button panel 16, which has a transparent panel main body 16a for allowing a screen image on a display surface 10a to be visually seen, is disposed for each void part 15b between opaque frames 15a of a lattice panel 15 disposed on the display surface 10a of a monitor 10. Extended parts 16c are disposed at the four corners of an outer circumference of the push button panel 16, such that they are extending outwardly in the diagonal directions, and these extended parts 16c are fitted to recessed parts 15c provided at the four corners of an void part 15b of the lattice panel 15 . A rubber contact 17, in which electrodes functioning as detecting means are embedded in an elastic body functioning as supporting means, is disposed at a lower surface side of each extended part 16c.

Abstract: An interface unit 4 for a game machine 1 includes a monitor 10 having a single display surface 10a, and an input module 11 serving as an input device overlaid on the display surface 10a, wherein a plurality of push button panels 16, each of which has a panel main body with enough transparency to allow a screen image on the display surface 10a to be visually seen, partitions the unit 4 into input display parts 4a, which are arranged on partial regions of the display surface 10a in a push-down operable manner, and a multi purpose display part 4b for displaying a screen image with a different purpose from that of the input display parts 4a.

Abstract: A push button panel 16, which has a transparent panel main body 16a for allowing a screen image on a display surface 10a to be visually seen, is disposed for each void part 15b between opaque frames 15a of a lattice panel 15 disposed on the display surface 10a of a monitor 10. Extended parts 16c are disposed at the four corners of an outer circumference of the push button panel 16, such that they are extending outwardly in the diagonal directions, and these extended parts 16c are fitted to recessed parts 15c provided at the four corners of an void part 15b of the lattice panel 15. A rubber contact 17, in which electrodes functioning as detecting means are embedded in an elastic body functioning as supporting means, is disposed at a lower surface side of each extended part 16c.

Abstract: An interface unit 4 for a game machine 1 includes a monitor 10 having a single display surface 10a, and an input module 11 serving as an input device overlaid on the display surface 10a, wherein a plurality of push button panels 16, each of which has a panel main body with enough transparency to allow a screen image on the display surface 10a to be visually seen, partitions the unit 4 into input display parts 4a, which are arranged on partial regions of the display surface 10a in a push-down operable manner, and a multi purpose display part 4b for displaying a screen image with a different purpose from that of the input display parts 4a.

Abstract: Positions of a plurality of objects in a space are detected. A position of reflected light of an object passing through an infrared screen is specified by analyzing an image obtained by selectively imaging the infrared rays. When the infrared screen is formed in front the display, reflected light is only caused just in front of the display. When the infrared rays are selectively imaged, a picture displayed with visible light is separated from reflected light in the infrared region, and only the reflected light can be imaged. A position of the reflected light on the display can be specified by a publicly known image analysis technique.

Abstract: Positions of a plurality of objects in a space are detected. A position of reflected light of an object passing through an infrared screen is specified by analyzing an image obtained by selectively imaging the infrared rays. When the infrared screen is formed in front the display, reflected light is only caused just in front of the display. When the infrared rays are selectively imaged, a picture displayed with visible light is separated from reflected light in the infrared region, and only the reflected light can be imaged. A position of the reflected light on the display can be specified by a publicly known image analysis technique.

Abstract: A swelling/contracting filter comprises a bag-like filtrating cloth allowed to swell and contract and a flow passage material disposed in the filtrating cloth for collecting and discharging a liquid filtrated by the filtrating cloth, and the filter is characterized in that the filtrating cloth and the flow passage material are both formed of flexible materials. Accordingly, the filter itself can be freely bent and folded. As a result, even if the filter is long or densely disposed in a vessel, the filter can be easily handles and removed by bending and folding, and the replacement and maintenance of the filtrating cloth and the filter can be extremely easily performed.

Abstract: A pre-paid vending machine (10) includes a card reader (15) which reads credit data and secret code number from a credit card (11). When a user inputs a secret code number and amount data from an input display (16), whether or not the input secret code number is the same as the secret code number read from the credit card is checked. If the numbers are the same, the input secret code number, the amount data and the like are transmitted to a credit center (13), where it is determined whether or not a credit can be granted. If the credit can be granted, the input amount data is magnetically recorded on the ID card (12) as a credit amount, whereby the ID card can be used as a pre-paid card. When a user buys a thing by inserting the ID card to an automatic vending machine (20), the price of the thing is subtracted from the credit amount of the ID card.

Abstract: A variable attenuation device is provided for an antenna amplifier by providing high attenuation and low attenuation signal flowpaths connected to the amplifier input by respective pin diodes. The biasing of the diodes and, thus, the attenuation factor provided, is controlled in proportion to the output of a rectifying circuit which, in turn, provides a DC output proportional to the magnitude of a given polarity of the AC signal supplied to the amplifier from inside the subscriber's home.

Abstract: In an alarm system utilizing a bidirectional wired television system, a large number of subscribers are located in a plurality of group units, whereby first specified frequencies which are common to respective of the group units but are different for the subscribers in each group unit are assigned to the respective subscribers in the respective group units to which are assigned another second specified frequencies which are different from one another, and still another third specified frequencies which are different for a plurality of types of alarms are assigned to the plurality of types of alarms.

Abstract: An FM trap circuit in an amplifier mounted on a roof top antenna is made operable from inside the home by providing a switch on the amplifier which is responsive to the negative half cycle in an A.C. power signal to disable the trap circuit and a switch in the home for selectively sending a full cycle A.C. power signal or a half-wave rectified signal to the amplifier.

Abstract: An alarm system utilizes a bidirectional wired TV system constructed to transmit a TV signal received by a community antenna to a central station and a plurality of subscribers' stations through a bidirectionally transmissible line. Each of the subscribers' stations is provided with an automatic and/or manual alarm signal generator for generating a low frequency alarm signal representing any of emergency conditions and the subscriber's number, a carrier wave generator, and a modulator for modulating a high frequency carrier wave signal generated by the carrier wave generator with the alarm signal from the alarm signal generator.

Abstract: In an alarm system utilizing a bidirectional wired television system, a large number of subscribers are combined in a plurality of group units, whereby the subscribers in each group unit are assigned with specified frequencies which are common to the respective group units but are different for the respective subscribers in the group unit, and the respective group units are assigned with another specified frequencies which are different for the respective group units. The group units are sequentially polled by interrogating signals comprising said another specified frequencies and applied from a central station, whereby when any subscriber in the polled group has an abnormal condition at its location, the subscriber answers to the polling by a signal of the specified frequency assigned to it.

Abstract: In a community TV receiving system in which television carrier signals are sent from a common community receiving antenna through a dividing box to respective TV receivers, all connected through coaxial cables, and an alarm system incorporated therein comprising alarm signal generators each having a resistance peculiar thereto connected to the coaxial cables across the core-tube circuit thereof in the vicinity of the respective receivers, and a common alarm receiver operable in response to the peculiar resistances located at a suitable station for indicating the signal generator location without interference to the TV signals.