Abstract: A display device is provided, by which the road traffic information can be easily seen. The display device displays a map on a displaying section of the display device and also displays traffic information along roads in the map on the basis of road traffic information. The display device includes: a composing section for composing traffic information images having different forms from each other depending upon types of the traffic information; and a superposing section for superposing the traffic information images so that the traffic information images are alternately displayed on an image of the map.

Abstract: A display device is provided, by which the road traffic information can be easily seen. The display device displays a map on a displaying section of the display device and also displays traffic information along roads in the map on the basis of road traffic information. The display device includes: a composing section for composing traffic information images having different forms from each other depending upon types of the traffic information; and a superposing section for superposing the traffic information images so that the traffic information images are alternately displayed on an image of the map.

Abstract: An automatic disc changer has a casing for the automatic disc changer, and a plurality of disc holders arranged in the casing. The disc holder stores a plurality of discs in vertical position. A reproducing device is provided in the casing to be moved along the disc holder. A detector is provided for detecting completion of change of a disc. In response to the detection, the reproducing device is stopped for a predetermined time.

Abstract: An electronic key telephone set in an electronic key telephone system which is connected to the office line during the power failure by a power failure detecting relay in the key service unit having a common selection signal sender is provided with a circuit for detecting power failure to the key telephone system, additional contacts to respective keys of the key dial and a selection signal generator coupled with the additional contacts. The selection signal generator is connected to the voice signal pair line by a transistor which is turned on by a signal from the power failure detecting circuit during the power failure, and receives a D.C. power on the office line to be operable, so that a call may be generated from the key telephone set even during the power failure to the key telephone system. The signal from the power failure detecting circuit is fed to the transistor through a photo-coupler element.

Abstract: A shutter curtain holder device in a camera comprises a shutter curtain folded back on itself at one end thereof, a stem disposed inside the folded portion of the shutter curtain, and a shutter beam surrounding the folded portion of the shutter curtain. The shutter beam has indented portions formed adjacent to the upper and lower edges thereof. The indented portions lie between the one end portion of the shutter curtain and the stem to render the spacing between the opposed portions of the shutter curtain at the folded end portion smaller than the transverse dimension of the stem.