Hitachi, Ltd.

Hitachi Engineering Co., Ltd.

Hitachi Microcomputer Engineering, Ltd.

Nobuhiro Hamada

Kazunori Takahashi

Takayoshi Yokota

Yasuo Morooka

Keisuke Bekki

Hiroshi Takenaga

Tadaaki Kitamura

Masao Takatoo

Norihiko Sugimoto

Goro Suzuki

Kuniyuki Kikuchi

Masao Takatou

Toshiko Suzuki

Tohru Nagai

Kenji Baba

Ikuro Masuda

Tsuyoshi Takahashi

Kotaro Hirasawa

Junzo Kawakami

Ko Miyazaki

Yoshiaki Usami

Kenichi Anjyo

Masao Takato

Masao Yanaka

Misato Nio

Minoru Hatada

Tetsuya Yamamoto

Jinichi Sakurai

Masumi Nawa

Hiroshi Tamura

Souichi Furukawa

Ryuji Kiyokawa

Mikihiko Motoki

Susumu Sugawara

Susumu Tamura

A road traffic control method is provided which can continue to maximize the number of vehicles allowed to run on a road and shorten time required for a vehicle to reach a destination, by preventing and relieving congestion. The method controls traffic of vehicles running on each of a plurality of parallel running roads. Each road is made connected at an interval of a predetermined distance, and at least one of the plurality of roads has a plurality of lanes. The method includes the steps of: detecting traffic of vehicles running in two counter directions on each road, at a position before at least one connected point of each of the plurality of roads; and changing ratio between the numbers of lanes of at least one of the plurality of roads, in accordance with the detected traffic of vehicles running in the two counter directions.

Traffic control method for relieving vehicle congestion on parallel roads

A traffic control system having a road information storing unit for storing information of a road map and the capacity of roads on the road map, a traffic measuring unit for measuring the traffic of roads, a traffic increase/decrease quantity calculating unit for calculating a traffic increase/decrease quantity between main points by using the measured traffic, a road traffic calculating unit for calculating traffic of a main road, by using the traffic increase/decrease quantity, and an area determining unit for determining an area which is the area for congestions less traffic by using the calculated traffic and the road capacity while maintaining the traffic increase/decrease quantity at a proper value. It is possible to control the traffic while considering nearby traffic conditions, to prevent and relieve congestion, and to maximize the traffic of roads, thereby minimizing the time required for reaching a destination.

Traffic control system

A method and an apparatus for measuring traffic flows, or in other words the flows of vehicles, inside and near a crossing. The method and apparatus are capable of extracting vehicles with a high level of accuracy. Overlap of vehicles can be avoided by setting the field of a camera to exclude a range from the inflow portion to the vicinity of center of the crossing but to include a range from the center to the vicinity of the outflow portion of the crossing. Accordingly, accuracy of traffic flow measurement can be improved.

Traffic flow measuring method and apparatus

A control method for a moving body and facilities is comprised of steps of measuring and recognizing at least one of the states such as the number of a moving body, moving speed and moving direction, and changing the state of facilities which is a goal of the moving body based on the result of the measurement/recognition, or displaying the state of the facility. A control apparatus for a moving body and facilities is comprised of a measuring unit for measuring at least one of the states such as the number of a moving body, moving speed, and moving direction, a memory unit for storing information on the condition of a local area in which the moving body is moving or on the facilities said moving body is heading for; an arithmetic unit for processing information from the measurement unit and memory unit; and an input/output unit for accessing information processed by the arithmetic unit, and displaying the information.

Method and apparatus for controlling moving body and facilities

This invention relates to a method an apparatus for measuring traffic flows or in other words, the flows of vehicles, inside and near a crossing, and is directed to provide method and apparatus capable of extracting vehicles with a high level of accuracy. Overlap of vehicles can be avoided by setting the field of a camera not to a range from the inflow portion to the vicinity of center of the crossing, but to a range from the center to the vicinity of the outflow portion (151) of the crossing. Accordingly, accuracy of traffic flow measurement can be improved.

A graphic processor comprises an input device for inputting a command from an operator, a display device for displaying graphic data and a computer for preparing and correcting graphic data by a command input from the operator and for making display control of the display device. When the operator wants to know the content of the command that is executed, he instructs the command to the computer. A command name, a processing content and a figure as an object of processing are calculated from history data instructed from the computer. The figure as the object of processing, the command processing content and the relation of correspondence are symbolized and displayed on the display device. Furthermore, a parametric figure is also displayed visually on the display device.

Graphic display apparatus

A decoding type select logic generating method includes the steps of listing on a group basis input signal names and output destination signal names contained in register transfer descriptions and control codes for commanding execution of the register transfers for each of the same input signal names and same output destination signal names, simplifying logics by replacing the control code having the hamming distance of one by a bit meaning 'don't care' on the group basis, generating AND gates for the control codes and the input signal names in each of the groups having the same input signal name and combining the outputs of the AND gates, generating AND gates for the control codes in each group having the same output destination signal name and combining the outputs of the AND gates for each of the output destination signal names, and combining the outputs of the groups each having the same input signal name and the groups each having the same output destination signal name.

Decoding type select logic generating method

A three-dimensional shape of an object is recognized by developing enveloping surfaces of the object by a cone-silhouetting method, wherein the object is picked up by a binocular three-dimensional vision method by making use of geometrical restraint conditions derived by the cone-silhouetting method. The binocular parallax is increased to thereby ensure the recognition of the three-dimensional shape with improved accuracy. Local concave portions which can not be recognized by the cone-silhouetting method by itself are recognized with higher accuracy.

Apparatus and method for recognizing three-dimensional shape of object

An apparatus and method for processing information of a drawing comprises steps of defining figure data representing figures, respectively, included in a drawing, preparing a plurality of regions called as field block memory regions for storing the figure data so that they can be selectively read out for edition of a drawing later on, and determining a usable range in each of the field block memories in accordance with the number of the figures included in the drawing. In a preferred mode, the method further includes steps of dividing the drawing into congruent rectangles called as buckets in a number determined in accordance with the number of the figures included in the drawing, allocating the abovementioned field block memory regions to the buckets, respectively, and storing the figure data in the memory region allocated to the bucket to which the associated figure belongs.

Drawing information processing method and apparatus

An automatic design system of a logic circuit system includes a storage for storing information about structures and functions of known basic circuits available for a circuit system to be designed, an input device for receiving design specification information about the structures and functions of the circuit to be designed, and a synthesize section for combining the known basic circuits stored in the storage so as to synthesize the desired logic circuit satisfying the design specification information.

Automatic design system of logic circuit

A production system for an expert system comprising: a production rule memory unit storing circuit conversion rules, each having a condition part describing circuit connection and an execution part describing a conversion of the condition part to an equivalent logic circuit dependent upon a predetermined semiconductor technology and further having a provisionally predetermined priority; a task data memory unit storing circuit connection data, each being subjected to an application of the circuit conversion rules; a production rule interpretation and execution unit for selecting a circuit conversion rule in accordance with the provisionally predetermined priority, collating the condition part of the selected circuit conversion rule with the circuit connection data to determine whether the condition part matches with a part of the circuit connection data and, when the both match each other, converting the part of the circuit connection data by the corresponding execution part of the circuit conversion rule to an equivalent logic circuit; further each production rule being provided with a rule flag indicating the collation failure to the circuit connection data, a rule flag memory unit for setting the rule, flag of the circuit conversion rule of which condition part did not match with any of the circuit connection data during the collation cycle, so as to inhibit collation thereafter until collation of all other circuit conversion rules is once completed, thereby increasing the operation speed of the production system for an expert system.

Production system for an expert system

A symmetric type loop communication system having no master station, in which a plurality of control stations connected to a loop communication path each have a timer with its set time different from each other control station. The timer of a station is reset when a transmission right signal (GA signal) from another control station is received. On the other hand, a GA signal is sent out to another control station together with a message frame when the timer thereof has counted to a predetermined state.

Symmetry type loop communication system

In a plant control system, a transmission channel includes loop transmission lines arranged in duplex. Equivalently connected to this transmission channel are a plurality of one-loop controller stations, a backup station backing up a disabled one of the plural controller stations and a display station for displaying the status of the controller stations and the backup station. Each of the controller stations, backup station and display station includes a built-in microcomputer. Each of these stations includes also a transmission interface circuit and a self-diagnostic circuit. The transmission interface circuit in each station selects one of the transmission lines for data transmission between its own station and the others. The self-diagnostic circuit in each station detects the presence of failure of normal operation of its own station and disconnects the disabled station from the transmission line, so that the other stations may not be adversely affected by the disabled station.

Plant control system

A method of storing articles in a warehouse having a plurality of storage blocks arranged adjacent each other with each of the storage blocks having a plurality of spaced racks for storing articles and linearly extending aisles between the racks. The warehouse also includes article transfer apparatus arranged for movement in respective aisles to transfer articles relative to a given location within a respective storage block and a control arrangement for operating the article transfer apparatus in accordance with a predetermined mode to transfer articles relative to said storage blocks. The method of storing includes the steps of storing a plurality of different articles in the storage blocks with at least two different articles in each storage block, storing in a first storage block at least one and another different articles, storing in a second storage block at least one article common to the one different article in the first storage block and at least one additional different article, storing in a third and any succeeding storage block at least one article common to the at least one additional different article of the immediately preceding storage block and at least one further different article, and storing in the last storage block as the at least one further different article an article common to the another different article of the first storage block to form an imaginary loop of articles in the warehouse.

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Hitachiota, Japan

Nobuhiro Hamada