Abstract: A map display apparatus displays a road map of a desired display district in accordance with stored map data. The apparatus includes a map data storing medium storing, in correspondence to a plurality of basic sections forming the whole area of the road map, a plurality of map information representing the road configurations in the basic sections and a plurality of name information representing the names of various parts in the basic sections, a display selecting device for selecting the desired display district from the whole area of the road map, a display control unit for generating a display signal in accordance with the map information group and the name information group of the basic sections contained in the selected display district, and a display responsive to the display signal to display the selected display district.

Abstract: A novel electronic map display system is disclosed for displaying a map on the basis of a map data stored. Various discontinuous points in each of predetermined areas included a map to be displayed are stored as structured data in the form of vectors. The discontinuous geographic data in each of the areas is stored as image pattern data. A selection signal is produced from a display selection unit for selecting an area to be displayed from the map. In accordance with the selection signal, a display signal is generated from the pattern data and the structured data corresponding to the area to be displayed. A map of the particular area is displayed on the basis of the display signal of a display control unit.

Abstract: A vehicle map display system includes a control unit to manually or automatically display a reduced or enlarged map, from a reduced or enlarged map data storage device in accordance with the separating distance between the present position of a vehicle and a destination, on the whole or part of a display area of a display device which is provided with a sub-display area.

Abstract: Disclosed is an electric rice cooker which includes a pot to hold rice and water, an inner case defining a heating space between the inner case and the outer peripheral and bottom surfaces of the pot, an outer case supporting the inner case, and at least one heater disposed in the heating space at a fixed distance from each of the pot and the inner case for heating air in the heating space to circulate the same by convection, thereby heating the pot and the rice and water in the pot from the upper portion.

Abstract: Disclosed is an electric rice cooker which comprises a pot to hold rice and water, an inner case defining a heating space between the inner case and the outer peripheral and bottom surfaces of the pot, an outer case supporting the inner case, and at least one heater disposed in the heating space at a fixed distance from each of the pot and the inner case for heating air in the heating space to circulate the same by convection, thereby heating the pot and the rice and water in the pot from the upper portion.

Abstract: In a travel guidance system for vehicles, a map data storage medium preliminarily stores administrative division name data and/or landmark data, and a control unit has the function of retrieving the name of an administrative division to which the present position of a vehicle belongs and/or a landmark in the vicinity of the present position in accordance with present position data and displaying the retrieved administrative division name and/or the retrieved landmark on a display.

Abstract: In a map display system for vehicles, spot coordinates are preliminarily stored which represent map forming spots and are provided with a coordinate origin of a specified spot, and display coordinates indicating map changing frames are also preliminarily stored. The display coordinate of the present position of the vehicle is compared with the display coordinate of a map changing frame. When the present position reaches the map changing frame, the spot coordinate of the present position is compared with the preliminarily stored spot coordinates so as to extract spots forming a new map centering the present position of the vehicle.

Abstract: An engine control method and apparatus generally applicable to those control systems of the engine such as an ignition system, fuel injection system, etc., which are controlled to optimum operation in accordance with the engine operating conditions. A plurality of angular pulses are generated during each rotation of the engine and these pulses are counted. In response to each pulse, an angular interrupt request is generated and the interrupt is performed in response thereto. The angular interrupt routines are of the highest priority and are executed irrespective of the execution status of the central processing unit to control an electric device associated with the engine in accordance with control data calculated by the central processing unit. Program interrupt requests are generated during selected angular interrupt routines when the counted number of angular pulses reaches a predetermined value.

Abstract: An engine control method generally applicable to those control systems of the engine such as an ignition system, fuel injection system, etc., which are controlled to optimum operation in accordance with engine operating conditions. Angular pulses are generated each time the output shaft of the engine rotates a predetermined angular amount. These angular pulses are counted from the occurrence of a position pulse which is generated at a predetermined angular position of the output shaft of the engine. A central processor is employed to calculate a first angular position at which an electric device for the engine is to be controlled. The central processor also calculates a time interval between the first angular position and a second angular position at which one of the angular pulses is to be provided just before the first angular position. When the angular pulse counting reaches a value corresponding to the second angular position, fixed frequency clock pulses are then counted.

Abstract: A powered hair clipper for use in cutting human hair is disclosed. The clipper comprises a tubular housing defining a handle to be grasped by a skillful hand of an operator and having a power driven cutter assembly at its forward end. The housing is provided with finger hooking means projecting outwardly and radially from the rear portion thereof so as to receive therein at least one of the middle, ring, and little fingers of the same hand grasping the clipper. With the help of the finger hooking means, the operator can carry the clipper by one or more fingers of his skillful hand such that the operator has no necessity of turning aside the clipper at each time when the same skillful hand takes over the handle a comb for arranging straggled or disordered hair strands prior to the trimming operation of advancing the clipper.

Abstract: In an electronic ignition control apparatus having RAM to initially store first and second signals indicative of the starting and terminating points for calculation of a time necessary for rotation of a predetermined angle defined by integer times as large as a predetermined angular interval of an output shaft of an engine, a rotation time of the output shaft is calculated during rotation of an angle of the output shaft defined by the first and second signals from RAM to calculate an optimum spark advance angle in relation to the operating condition of the engine such that an angular position defined by integer times as large as the predetermined angular interval at the advance angle side of the calculated advance angle is determined to be stored in RAM as a third signal.

Abstract: An engine control method generally applicable to those control systems of the engine such as an ignition system, fuel injection system, etc., which are controlled to optimum operation in accordance with the engine operating conditions. In this method, an operation starting timing and an operation ending timing of the control system, e.g., in the case of the ignition system, an ignition coil energization starting timing and an ignition timing (an energization ending timing) are computed at each of predetermined computing cycles, and the latest computed ignition timing, for example, which is computed after the coil energization has been started further taking into consideration of the actual coil energization timing and a minimum required energization period is compared with an ignition timing computed in the preceding computing cycle, and a corrective computation of the latest computed ignition timing is carried out depending on the result of the comparison to obtain an optimum ignition timing.

Abstract: In an electronic ignition control apparatus having RAM to initially store first and second signals indicative of the starting and terminating points for calculation of a time necessary for rotation of a predetermined angle defined by integer times as large as a predetermined angular interval of an output shaft of an engine, a rotation time of the output shaft is calculated during rotation of an angle of the output shaft defined by the first and second signals from RAM to calculate an optimum spark advance angle in relation to the operating condition of the engine such that an angular position defined by integer times as large as the predetermined angular interval at the advance angle side of the calculated advance angle is determined to be stored in RAM as a third signal.

Abstract: An engine control method and apparatus generally applicable to those control systems of the engine such as an ignition system, fuel injection system, etc., which are controlled to optimum operation in accordance with the engine operating conditions. In this method, an operation starting timing and an operation ending timing of the control system, e.g., in the case of the ignition system, an ignition coil energization starting timing and an ignition timing (an energization ending timing) are computed at each of predetermined computing cycles, and the latest computed ignition timing, for example, which is computed after the coil energization has been started, further taking into consideration the actual coil energization timing and a minimum required energization period is compared with an ignition timing computed in the preceding computing cycle, and a corrective computation of the latest computed ignition timing is carried out depending on the result of the comparison to obtain an optimum ignition timing.

Abstract: A copying machine equipped with a flash type fixing apparatus includes at least two light shielding shutters adapted to prevent a light resulting from flashing of the flash type fixing apparatus from reaching a photosensitive layer through a conveying path between the photosensitive layer and the flash type fixing apparatus.