Abstract: An electroencephalogram electrode includes: a bottom portion on which a connection member is placed, the connection member which is configured to supply a biological signal that is acquired from a subject through conductive gel, to an external apparatus; an annular wall which annularly extends from the bottom portion in a contact direction with respect to the subject; and a plurality of barb members which are disposed in a holding space for the conductive gel that is located inside the annular wall, and which elongate from the bottom portion in the contact direction with respect to the subject.

Abstract: A connector device according to the present disclosure includes a first connector section and a second connector section. The first connector section includes a waveguide for transmitting a high-frequency signal. The second connector section includes a waveguide for transmitting a high-frequency signal, a yoke disposed to cover the waveguide, and a magnet forming a magnetic circuit with the yoke, and is couplable to the first connector section by the attractive force of the magnet. A communication system according to the present disclosure includes two communication devices and a connector device. The connector device has the above-described configuration and transmits a high-frequency signal between the two communication devices.

Abstract: A signal transmission system including: a first connector apparatus, and a second connector apparatus that is coupled with the first connector apparatus. The first connector apparatus and the second connector apparatus are coupled together to form an electromagnetic field coupling unit, and a transmission object signal is converted into a radio signal, which is then transmitted through the electromagnetic field coupling unit, between the first connector apparatus and the second connector apparatus.

Abstract: A connector device according to the present disclosure includes a first connector section and a second connector section. The first connector section includes a waveguide for transmitting a high-frequency signal. The second connector section includes a waveguide for transmitting a high-frequency signal, a yoke disposed to cover the waveguide, and a magnet forming a magnetic circuit with the yoke, and is couplable to the first connector section by the attractive force of the magnet. A communication system according to the present disclosure includes two communication devices and a connector device. The connector device has the above-described configuration and transmits a high-frequency signal between the two communication devices.

Abstract: A signal transmission system including: a first connector apparatus, and a second connector apparatus that is coupled with the first connector apparatus. The first connector apparatus and the second connector apparatus are coupled together to form an electromagnetic field coupling unit, and a transmission object signal is converted into a radio signal, which is then transmitted through the electromagnetic field coupling unit, between the first connector apparatus and the second connector apparatus.

Abstract: An electroencephalogram electrode includes: a bottom portion on which a connection member is placed, the connection member which is configured to supply a biological signal that is acquired from a subject through conductive gel, to an external apparatus; an annular wall which annularly extends from the bottom portion in a contact direction with respect to the subject; and a plurality of barb members which are disposed in a holding space for the conductive gel that is located inside the annular wall, and which elongate from the bottom portion in the contact direction with respect to the subject.

Abstract: A signal transmission system including: a first connector apparatus, and a second connector apparatus that is coupled with the first connector apparatus. The first connector apparatus and the second connector apparatus are coupled together to form an electromagnetic field coupling unit, and a transmission object signal is converted into a radio signal, which is then transmitted through the electromagnetic field coupling unit, between the first connector apparatus and the second connector apparatus.

Abstract: There is an image data processing circuit including a memory storing input image data, the input image data being limited to a specific number of colors or to a specific image range, and a correction processing part replacing, when a predetermined tone change is present between a pixel in image data previous by one frame whose data is stored by the memory and a pixel in image data in a current frame whose data is input, a relevant pixel in the current frame with a color of a specific tone. The memory is built in an integrated circuit included in the correction processing part.

Abstract: The present invention provides an apparatus for controlling body temperature of a patient during hypothermia treatment, comprising: a body trunk cooling unit having a first affixing portion to be applied on a surface of the trunk of a patient's body and for cooling the surface of the trunk of the patient's body; and a body peripheral part heating unit having a second affixing portion to be applied to the peripheral part of the patient's body and for heating the peripheral part of the body by utilizing exhaust heat from the body trunk cooling unit and suppressing activation of cold receptors of the skin of the patient.

Abstract: A signal transmission system including: a first connector apparatus, and a second connector apparatus that is coupled with the first connector apparatus. The first connector apparatus and the second connector apparatus are coupled together to form an electromagnetic field coupling unit, and a transmission object signal is converted into a radio signal, which is then transmitted through the electromagnetic field coupling unit, between the first connector apparatus and the second connector apparatus.

Abstract: A signal transmission system including: a first connector apparatus, and a second connector apparatus that is coupled with the first connector apparatus. The first connector apparatus and the second connector apparatus are coupled together to form an electromagnetic field coupling unit, and a transmission object signal is converted into a radio signal, which is then transmitted through the electromagnetic field coupling unit, between the first connector apparatus and the second connector apparatus.

Abstract: The present invention provides an apparatus for controlling body temperature of a patient during hypothermia treatment, comprising: a body trunk cooling unit having a first affixing portion to be applied on a surface of the trunk of a patient's body and for cooling the surface of the trunk of the patient's body; and a body peripheral part heating unit having a second affixing portion to be applied to the peripheral part of the patient's body and for heating the peripheral part of the body by utilizing exhaust heat from the body trunk cooling unit and suppressing activation of cold receptors of the skin of the patient.

Abstract: Provided are a novel europium compound which has a melting point of 180° C. or lower and can be stably supplied by bubbling in a chemical vapor deposition method or an atomic layer deposition method, a precursor for forming a europium-containing thin film based on the compound, and a method for forming a europium-containing thin film using this precursor. A europium-containing thin film is formed using bis(tetramethylmonoalkylcyclopentadienyl)europium as a precursor for forming a europium-containing thin film by a chemical vapor deposition method or anatomic layer deposition method.

Abstract: There is an image data processing circuit including a memory storing input image data, the input image data being limited to a specific number of colors or to a specific image range, and a correction processing part replacing, when a predetermined tone change is present between a pixel in image data previous by one frame whose data is stored by the memory and a pixel in image data in a current frame whose data is input, a relevant pixel in the current frame with a color of a specific tone. The memory is built in an integrated circuit included in the correction processing part.

Abstract: Provided are a novel europium compound which has a melting point of 180° C. or lower and can be stably supplied by bubbling in a chemical vapor deposition method or an atomic layer deposition method, a precursor for forming a europium-containing thin film based on the compound, and a method for forming a europium-containing thin film using this precursor. A europium-containing thin film is formed using bis(tetramethylmonoalkylcyclopentadienyl)europium as a precursor for forming a europium-containing thin film by a chemical vapor deposition method or anatomic layer deposition method.

Abstract: Provided is an optical pickup device capable of preventing a soldering work from physically damaging any part of a housing of the optical pickup device. In the optical pickup device to be provided, a circuit board fixed to an LD holder and a circuit board covering a housing from below are connected via a solder joint. An inner-side part of an upper-end portion of an external sidewall of the housing located near the connecting position is cut away to form a cut surface. When a soldering iron is used to form the solder joint to connect the two circuit boards, the cut surface prevents the soldering iron from touching the external sidewall and thereby preventing this part of the external sidewall from being damaged by the soldering iron.

Abstract: A signal transmission system including: a first connector apparatus, and a second connector apparatus that is coupled with the first connector apparatus. The first connector apparatus and the second connector apparatus are coupled together to form an electromagnetic field coupling unit, and a transmission object signal is converted into a radio signal, which is then transmitted through the electromagnetic field coupling unit, between the first connector apparatus and the second connector apparatus.

Abstract: Provided is an optical pickup device capable of preventing a soldering work from physically damaging any part of a housing of the optical pickup device. In the optical pickup device to be provided, a circuit board fixed to an LD holder and a circuit board covering a housing from below are connected via a solder joint. An inner-side part of an upper-end portion of an external sidewall of the housing located near the connecting position is cut away to form a cut surface. When a soldering iron is used to form the solder joint to connect the two circuit boards, the cut surface prevents the soldering iron from touching the external sidewall and thereby preventing this part of the external sidewall from being damaged by the soldering iron.

Abstract: An optical transmitter receiver is provided in which the power of light to be transmitted therefrom is set to a proper value by controlling the relative timing of changing the power of light to be transmitted therefrom. An optical transmitter receiver consists of an optical transmitter, an optical receiver, a signal level detector, and a signal level controller. The optical transmitter transmits a light signal to a mate optical transmitter receiver. The optical receiver receives a light signal from the mate optical transmitter receiver. The signal level detector detects the level of the light signal received by the optical receiver. The signal level controller changes the power of the light signal to be transmitted by the optical transmitter from one value to another according to the signal level detected by the signal level detector.

Abstract: A drive circuit of a light emitting element capable of setting a desired constant current and capable of operating stably at a high speed while holding a forward direction voltage required for the emission of light even under a low power supply voltage, wherein there is provided an input circuit which receives differential drive signals and outputs differential signals of levels in accordance with the level of a supplied drive voltage, a differential output circuit in which an emitter-connection portion of transistors is grounded via a resistor, the differential signals and are supplied to bases, and a laser diode is connected to a collector of the transistor, a reference voltage generation circuit which generates a reference voltage, a comparison circuit which compares the voltage of the emitter-connection portion with the reference voltage and outputs a signal of the level in accordance with the result of comparison, and a variable voltage supply circuit which generates a voltage in accordance with the inpu