Abstract: The present invention has an object to provide a technique capable of appropriately determining whether a vehicle has entered a facility range. A navigation apparatus includes a storage, a position detector, and an entry determining unit. The storage stores map information including a facility range. The position detector detects a position of an own vehicle. The entry determining unit determines that, in a case where the position of the own vehicle detected by the position detector has entered an entry determination range associated with the facility range, the own vehicle has entered the facility range.

Abstract: A map information processing apparatus includes a map information storage unit 111 for storing map information which is separated into multiple layers, a layer-to-be-updated-with-addition determination processing unit 118 for determining one or more layers which are to be updated with addition of an unregistered road which has been detected during travel of a vehicle, and an unregistered road adding and updating unit 117 for adding the unregistered road to the map information storage unit to update the map information with the addition being aimed at the one or more layers determined by the layer-to-be-updated-with-addition determination processing unit.

Abstract: The present invention has an object to provide a technique capable of appropriately determining whether a vehicle has entered a facility range. A navigation apparatus includes a storage, a position detector, and an entry determining unit. The storage stores map information including a facility range. The position detector detects a position of an own vehicle. The entry determining unit determines that, in a case where the position of the own vehicle detected by the position detector has entered an entry determination range associated with the facility range, the own vehicle has entered the facility range.

Abstract: A map information processor includes a map information storage unit 13 for storing map display information including a set of pieces of mesh-by-mesh map information managed on a mesh-by-mesh basis and including road information, background information, and in-mesh image information, an image processing unit 15 for generating a map image on a basis of image data included in the road information, the background information, and the in-mesh image information included in the mesh-by-mesh map information read from the map information storage unit, and a display device 5 for displaying the map image generated by the image processing unit.

Abstract: A map information processing apparatus is disclosed. The apparatus includes a processor for calculating a vehicle position; a data generation unit for generating traveling locus data on the basis of the calculated vehicle position when the vehicle position deviates from a road; a registration unit for registering the traveling locus data generated by the data generation unit in a temporarily registered road list as a temporarily registered road; an operation unit for selecting one of temporarily registered roads registered in the temporarily registered road list; and an official registration unit for registering the selected temporarily registered road in an officially registered road list as an officially registered road in accordance with an instruction from the operation unit, generating road data on the basis of traveling locus data relating to the temporarily registered road, and adding the generated road data to a map data stored in a map data storage unit.

Abstract: A map information processing apparatus includes a road matching means (143) for comparing the road data with current position data to carry out map matching, an input unit (130) for inputting both a specified detection start point and a specified detection end point, an unregistered road detection means (144) to which both the specified detection start point and the specified detection end point are inputted, for detecting, as an unregistered road, a section between a detection start point and a detection end point of the unregistered road which are acquired on the basis of either the map matching carried out by the road matching means or the result of comparison between running track data and the road data, and a road data generating means (145) for generating road data corresponding to the detected unregistered road and storing the road data in a map data storage means.

Abstract: A map information processing device extracts objects having a relation therebetween which satisfies a predetermined requirement from among objects each of which is a search target, and selects an object which the user desires from among the objects extracted thereby by prompting the user to input the name of one of the objects according to a row of characters defined by identifier character information showing the row of a predetermined number of characters from the head of a character string showing the name of the object.

Abstract: A map information processor includes a map information storage unit 13 for storing map display information including a set of pieces of mesh-by-mesh map information managed on a mesh-by-mesh basis and including road information, background information, and in-mesh image information, an image processing unit 15 for generating a map image on a basis of image data included in the road information, the background information, and the in-mesh image information included in the mesh-by-mesh map information read from the map information storage unit, and a display device 5 for displaying the map image generated by the image processing unit.

Abstract: A map information providing system has a map information providing apparatus 1 and an onboard information terminal 3. The map information providing apparatus 1 selects a road represented by the coordinate point string data indicating a newly established road in accordance with distribution request information obtained from the onboard information terminal, and distributes the distribution road information containing the coordinate point string data about the road selected to the onboard information terminal.

Abstract: A map information providing system has a map information providing apparatus 1 and an onboard information terminal 3. The map information providing apparatus 1 selects a road represented by the coordinate point string data indicating a newly established road in accordance with distribution request information obtained from the onboard information terminal, and distributes the distribution road information containing the coordinate point string data about the road selected to the onboard information terminal.

Abstract: A map information processing apparatus includes: a vehicle position calculation unit 12 for calculating a vehicle position; a traveling locus data generation unit 21 for generating traveling locus data on the basis of the calculated vehicle position when the vehicle position deviates from a road indicated by road data that are included in map data read from a map data storage unit 1; a temporary registration unit 23 for registering the traveling locus data generated by the traveling locus data generation unit in a temporarily registered road list as a temporarily registered road; an operation unit 11 for selecting one of temporarily registered roads registered in the temporarily registered road list; and an official registration unit 24 for registering the temporarily registered road selected by the operation unit in an officially registered road list as an officially registered road in accordance with an instruction from the operation unit, generating road data on the basis of traveling locus data relating t

Abstract: A map information processing apparatus includes a road matching means (143) for comparing road data with current position data to carry out map matching, an input unit (130) for inputting both a specified detection start point and a specified detection end point, an unregistered road detection means (144) to which both the specified detection start point and the specified detection end point are inputted, for detecting, as an unregistered road, a section between a detection start point and a detection end point of the unregistered road which are acquired on the basis of either the map matching carried out by the road matching means or the result of comparison between running track data and the road data, and a road data generating means (145) for generating road data corresponding to the detected unregistered road and storing the road data in a map data storage means.

Abstract: A map information processing apparatus includes a map information storage unit 111 for storing map information which is separated into multiple layers, a layer-to-be-updated-with-addition determination processing unit 118 for determining one or more layers which are to be updated with addition of an unregistered road which has been detected during travel of a vehicle, and an unregistered road adding and updating unit 117 for adding the unregistered road to the map information storage unit to update the map information with the addition being aimed at the one or more layers determined by the layer-to-be-updated-with-addition determination processing unit.

Abstract: A method for effectively preventing polymerization of acrylic acid during an azeotropic dehydration distillation in an acrylic acid manufacturing process and thus enabling stable operation of the azeotropic dehydration column over an extended period of time. The acrylic acid is separated in an azeotropic dehydration column from an acrylic acid aqueous solution fed therein, and the method includes withdrawing from the bottom of the azeotropie dehydration column a bottom effluent containing 50% or more of glyoxal (including the hydrates thereof) contained in the acrylic acid aqueous solution fed into the azeotropic dehydration column.

Abstract: An object of this invention is to provide a method for producing acrylic acid that enables to suppress adverse influence of byproducts during distillation and to accomplish long-term continuous operation of the acrylic acid production apparatus. This invention is directed to a method for producing (meth)acrylic acid comprising the step of isolating (meth)acrylic acid from a liquid containing (meth)acrylic acid by distillation wherein the liquid contains glyoxal (including its hydrate) in a concentration of 0.1 mass % or less.

Abstract: A method for effective preventing polymerization of acrylic acid during an azeotropic dehydration distillation in an acrylic acid manufacturing process and thus enabling an stable operation of the azeotropic dehydration column over an extended period of time. A method for preventing the polymerization of acrylic acid in an acrylic acid production process, wherein acrylic acid is separated in an azeotropic dehydration column from an acrylic acid aqueous solution fed therein, the method comprising withdrawing from the bottom of the azeotropic dehydration column a bottom effluent containing 50% or more of glyoxal (including the hydrates thereof) contained in the acrylic acid aqueous solution fed into the azeotropic dehydration column.

Abstract: This method of preventing polymerization of methacrylic acid inn the process of its production is characterized by comprising using, in a refining column, a combination of N-nitrosophenylhydroxylamine or salt thereof with an N-oxyl compound, an N-hydroxy-,2,2,6,6-tetramethylpiperidine compound and a 2,2,6,6-tetramethylpiperidine compound. In this method, N-nitrosophenylhydroxylamine or a salt thereof rises inside a refining column under splitting part thereof to effectively inhibit polymerization of (meth)acrylic acid or the like. The above polymerization in both vapor and liquid phases can be inhibited more effectively by the combined use of the compounds mentioned above.

Abstract: An object of this invention is to provide a method for producing acrylic acid that enables to suppress adverse influence of byproducts during distillation and to accomplish long-term continuous operation of the acrylic acid production apparatus. This invention is directed to a method for producing (meth)acrylic acid comprising the step of isolating (meth)acrylic acid from a liquid containing (meth)acrylic acid by distillation wherein the liquid contains glyoxal (including its hydrate) in a concentration of 0.1 mass % or less.

Abstract: A method is disclosed for preventing the polymerization of (meth)acrylic acid and esters thereof, which method is characterized by using an N-nitrosophenyl hydroxyl amine or a salt thereof, an N-oxyl compound, an N-hydroxy-2,2,6,6-tetramethylpiperidine compound, and a 2,2,6,6-tetramethylpiperidine compound in combination in a purifying column. The N-nitrosophenylhydroxylamine or the salt thereof is partly decomposed in the purifying column and is allowed to ascend the interior of the column and effectively inhibit the polymerization of (meth)acrylic acid. Since the method does not need to use any metal compound, it permits the disposal of the waste liquid to be effected easily. Further, the combined use of the relevant components ensures effective prevention of the polymerization in the gas and the liquid phase.