Abstract: A mobile navigation apparatus comprises, computing means for computing the latitude and longitude information of the current location on the basis of radiowaves or the like received from satellites or ground stations, storage means for storing section information on a reference map, and display means for displaying the section information of the reference map corresponding to the current location and the current location itself, on the basis of the information from the computing means and the information stored in the storage means.

Abstract: A register having a predetermined set value is provided in parallel with a counter for counting a basic signal generated from a crystal oscillator. The register and the counter are connected to a comparator for inputting a count signal into a time-counting circuit every time when the count value of the basic signal in the counter has reached the set value in the register. A signal based on the time-counting signal is sent from the time-counting circuit to a display which indicates time based on the signal. The time indicated on the display is compared with the standard time indicated by a television or the like. In this case, when there is a time difference between the display time and the standard time, a correction value, in terms of the number of seconds, corresponding to the time difference is input through an input unit. The input correction value is calculated in a computing circuit, and is set as a new set value in the register.

Abstract: A battery pack, capable of replacing a plurality of primary or secondary batteries, includes at least one battery body, a battery holder that houses the battery body, and a pair of positive and negative terminals. The battery pack is provided with a recess formed at one end of the battery holder to house a projecting battery terminal positioned in a battery case when the battery pack is stored in the battery case.

Abstract: A speed measuring apparatus and a toy for measuring a speed of a moving member has a quartz oscillator for generating a clock signal which has a predetermined frequency, a CR oscillator for generating a clock signal which has a higher frequency than that of the quartz oscillator, a comparative circuit, connected with the quart oscillator and the CR oscillator, for comparing the oscillation frequency of the quartz oscillator as a reference signal with the oscillation frequency of the CR oscillator, a corrective circuit, connected with the comparative circuit, for calculating a corrective factor in accordance with a result from the comparative circuit, a measuring unit, connected with the CR oscillator and the corrective circuit, for measuring a speed of the moving member in accordance with the clock signal from the CR oscillator and the corrective factor from the corrective circuit, and a display unit, connected with the measuring unit, for displaying the speed computed by the measuring unit.

Abstract: A natural environment observation system has a GPS for detecting the present location (address), a calendar for providing the present date and time, a memory for storing natural phenomenon data, such as astronomical data, oceanic data, etc.; and an arithmetic unit for processing the natural phenomenon data, in accordance with the present location and time and the kind of information to be observed.

Abstract: A radio system has a detector detecting a required radio program, and supplying an instruction signal when the program is detected thereby. In accordance with the instruction signal, a recording unit begins to record the program.

Abstract: A camera has a display for displaying a subject with colors which are determined in accordance with a color correction coefficient. The coefficient is generated in accordance with a combination of photographic parameters, such as a shutter speed, an aperture, etc.

Abstract: A radio system has a detector detecting a required radio program, and supplying an instruction signal when the program is detected thereby. In accordance with the instruction signal, a recording unit begins to record the program.

Abstract: A video mixing apparatus mixes a graphics video image and a playback video image at a plurality of mixture ratios in one image plane. Fade data indicative of the mixing ratio of at least one line of the playback video signal and the graphics video signal is sequentially generated in accordance with a predetermined order. The fade data is held into holding means and is outputted from the holding means synchronously with a horizontal sync signal. The levels of the playback video signal and the graphics video signal are individually adjusted in accordance with the fade data outputted from the holding means and the adjusted signals are added. The playback video signal and the graphics video signal are mixed at the mixing ratio set every line of one image plane.

Abstract: An interference filter includes a multi-coated interference filter layer of dielectric substances deposited on a transparent base plate and extinction members applied to side surfaces of the transparent base plate. A multi-color interference filter has at least two such interference filters having different spectral characteristics closely connected to each other through the extinction members and cemented to a transparent base plate which is formed with a multi-coated anti-reflection layer deposited on one surface opposite to a surface to which the interference filter is cemented.

Abstract: A bar-like workpiece is axially compressed to form a flange at the intermediate portion thereof. Then, the workpiece with the flange is held by dies and its one axial end surface is received by a receiver die. The receiver die has a recess formed at the central portion of its end surface for accommodating a slug flowing from the workpiece. The end surface of the receiver die around the recess forms a surface to receive the workpiece. From the side opposite to the receiver die a punch is continuously pressed into the workpiece beyond the flange position to form a sleeve insertion hole. Next, a residual material left at the bottom of the sleeve insertion hole is punched out by another punch, completing the fuel injector core.