Abstract: A driving assistance device and a driving assistance method capable of decelerating a vehicle in the event of an emergency while suppressing erroneous operations of an occupant are provided. A driving assistance device may include a first switch configured to receive an operation of an occupant, a second switch configured to receive an operation of the occupant after the first switch receives an operation of the occupant, a storage configured to store information, and a processor configured to execute a program stored in the storage, wherein the storage stores the program that causes the processor to execute, a process of decelerating a vehicle until the speed of the vehicle becomes smaller than a predetermined speed when the second switch receives an operation of the occupant.

Abstract: A scanning circuit of an image sensor using light sensor circuits each representing a unit pixel and producing a sensor signal corresponding to a current flowing in a photoelectric converting element, in which pixel signals are saturated by previously turning on the light sensor circuits and sequentially reading saturated pixel sensor signals, achieving stable and high-speed reading-out of the sensor signals from the image sensor.

Abstract: An output compensating device capable of optimally compensating output signals of an image sensor composed of a number of light-sensor circuits, each of which represents a unit pixel and is capable of producing in a photoelectric converting element a sensor current proportional to a quantity of light falling thereon, converting the current into a voltage signal by a MOS type transistor with a logarithmic output characteristic in a weak inverse state, initializing itself by removing a charge accumulated in a parasitic capacitor of the photoelectric converting element by changing a drain voltage of the transistor to a value lower than a normal value for a specified time and outputting a pixel signal having a logarithmic characteristic at a large quantity of the sensor current and a pixel signal having a non-logarithmic characteristic at a small quantity of the sensor current.

Abstract: Disclosed is an image sensor consisting of light sensor circuits arranged to form an array of pixels, each of which produces in a photoelectric converting element a sensor current proportional to the quantity of light falling thereon and converts the sensor current into a voltage signal by a MOS type transistor with a logarithmic output characteristic in a weak inverse state, wherein a means for changing over a drain voltage of the transistor for each light sensor circuit to a value lower than a normal value for a specified time to remove a charge accumulated in a parasitic capacity of the photoelectric converting element to initialize the circuit before detecting a light signal. The image sensor can obtain a voltage signal corresponding to the quantity of incident light even if the sensor current was rapidly changed, thereby eliminating the possibility of occurrence of afterglow of each pixel even at a small quantity of incident light.

Abstract: Is disclosed a scanning circuit of an image sensor using light sensor circuits each representing a unit pixel and producing a sensor signal corresponding to a current flowing in a photoelectric converting element, which is provided with a means for saturating pixel signals by previously turning on the light sensor circuits and sequentially reading saturated pixel sensor signals, achieving stable and high-speed reading-out of the sensor signals from the image sensor.

Abstract: An output compensating device capable of optimally compensating output signals of an image sensor composed of a number of light-sensor circuits, each of which represents a unit pixel and is capable of producing in a photoelectric converting element a sensor current proportional to a quantity of light falling thereon, converting the current into a voltage signal by a MOS type transistor with a logarithmic output characteristic in a weak inverse state, initializing itself by removing a charge accumulated in a parasitic capacitor of the photoelectric converting element by changing a drain voltage of the transistor to a value lower than a normal value for a specified time and outputting a pixel signal having a logarithmic characteristic at a large quantity of the sensor current and a pixel signal having a non-logarithmic characteristic at a small quantity of the sensor current.

Abstract: Disclosed is an image sensor consisting of light sensor circuits arranged to form an array of pixels, each of which produces in a photoelectric converting element a sensor current proportional to the quantity of light falling thereon and converts the sensor current into a voltage signal by a MOS type transistor with a logarithmic output characteristic in a weak inverse state, wherein a means for changing over a drain voltage of the transistor for each light sensor circuit to a value lower than a normal value for a specified time to remove a charge accumulated in a parasitic capacity of the photoelectric converting element to initialize the circuit before detecting a light signal. The image sensor can obtain a voltage signal corresponding to the quantity of incident light even if the sensor current was rapidly changed, thereby eliminating the possibility of occurrence of afterglow of each pixel even at a small quantity of incident light.

Abstract: An acrylic resin having an intrinsic viscosity [.eta.] of about 0.028 to about 0.117 l/g and a weight-average molecular weight to number-average molecular weight ratio (Mw/Mn), measured by gel permeation chromatography of about 2.3 to about 6.0, said resin comprising the polymerization product of (1) about 50 to 100 wt. % of methyl methacrylate and (2) 0 to about 50 wt. % of at least one monomer selected from the group consisting of acrylic ester monomer and methacrylic ester monomer, said acrylic ester monomer comprising the reaction product of an alkyl alcohol having 1 to 8 carbon atoms and acrylic acid and said methacrylic ester comprising the reaction product of an alkyl alcohol having 2 to 12 carbon atoms and methacrylic acid.

Abstract: An acrylic resin having resistance to crazing or crack formation when brought into contact with an organic solvent may be prepared by polymerizing or copolymerizing a monomer or monomers comprising (1) 50 to 100 wt. % of methyl methacrylate and (2) 0 to 50 wt. % of at least one monomer selected from the group consisting of an acrylic ester and a methacrylic acid ester, and adding a chain transfer agent after initiation and prior to completion of the polymerization. The acrylic resins have an intrinsic viscosity of 0.028 to 0.117 liters per gram, and a ratio of weight-average molecular weight to number-average molecular weight of 2.3 to 6.0.

Abstract: A novel three-component type acrylic resin composition comprising a C.sub.3 -C.sub.8 alkyl ester of acrylic acid, methyl acrylate and methyl methacrylate in a specific ratio. Such composition can be readily molded into a shaped article which is excellent in solvent resistance even upon being fabricated. The composition of the present invention is also featured by its good heat distortion temperature and mechanical strength, as compared to the conventional acrylic resin composition.

Abstract: A process for preparing arcylate polymers comprising subjecting to suspension-polymerization a system (I) comprising an alkyl ester of methacrylic acid, said system (I) optionally containing an alkyl ester of acrylic acid and other vinyl monomer copolymerizable with said esters, to obtain a suspension containing polymer beads; and adding to the resulting suspension an aqueous suspension of a system (II) comprising an alkyl ester of acrylic acid and a cross-linking monomer, said system (II) optionally containing an alkyl ester of methacrylic acid and being employed in an amount of 20 to 70 parts by weight per 100 parts by weight of said system (I), under agitation at a temperature allowing substantial advance of polymerization to effect a final polymerization.