Abstract: Provided is a frequency conversion mixer. The frequency conversion mixer includes a transconductance stage, a switching stage, a load stage, a current bleeding circuit, and a bias stage. The transconductance stage receives an RF signal, and outputs a current corresponding to a voltage of the RF signal. The switching stage switches the current which is outputted from the transconductance stage in response to a local oscillation signal, for frequency conversion the RF signal into an intermediate frequency (IF) signal. The load stage is connected between the switching stage and a supply voltage terminal. The current bleeding circuit is connected parallel with the switching stage, especially, embodying inverter structure with transconductance stage to get not only current bleeding effect but also current reuse effect, and one resonant inductor for reducing noise which is generated in parasitic capacitance at node between transconductance stage and switching stage.

Abstract: A hinge assembly and a mobile terminal are disclosed. The hinge assembly can include: a torsion spring; a shaft, which penetrates through the torsion spring; a bushing, coupled to one end of the torsion spring and to one side of the shaft; a holder, which is coupled to the other end of the torsion spring, and which the shaft penetrates through; a sliding cam, which is coupled to the other side of the shaft, and which may move in linkage with the shaft; a fixed cam, which engages the sliding cam; a compression spring, which is positioned between the holder and the sliding cam, and which may place the sliding cam in close contact with the fixed cam; and a housing coupled to the holder and the fixed cam. Thus, the mobile terminal can be unfolded automatically using just a few number of parts without requiring energy consumption.

Abstract: Provided is a frequency conversion mixer. The frequency conversion mixer includes a transconductance stage, a switching stage, a load stage, a current bleeding circuit, and a bias stage. The transconductance stage receives an RF signal, and outputs a current corresponding to a voltage of the RF signal. The switching stage switches the current which is outputted from the transconductance stage in response to a local oscillation signal, for frequency conversion the RF signal into an intermediate frequency (IF) signal. The load stage is connected between the switching stage and a supply voltage terminal. The current bleeding circuit is connected parallel with the switching stage, especially, embodying inverter structure with transconductance stage to get not only current bleeding effect but also current reuse effect, and one resonant inductor for reducing noise which is generated in parasitic capacitance at node between transconductance stage and switching stage.

Abstract: A hinge assembly and a mobile terminal are disclosed. The hinge assembly can include: a torsion spring; a shaft, which penetrates through the torsion spring; a bushing, coupled to one end of the torsion spring and to one side of the shaft; a holder, which is coupled to the other end of the torsion spring, and which the shaft penetrates through; a sliding cam, which is coupled to the other side of the shaft, and which may move in linkage with the shaft; a fixed cam, which engages the sliding cam; a compression spring, which is positioned between the holder and the sliding cam, and which may place the sliding cam in close contact with the fixed cam; and a housing coupled to the holder and the fixed cam. Thus, the mobile terminal can be unfolded automatically using just a few number of parts without requiring energy consumption.

Abstract: A hinge assembly can include: a torsion spring; a shaft, which penetrates through the torsion spring; a bushing, coupled to one end of the torsion spring and one side of the shaft; a holder, which is coupled to the other end of the torsion spring; a housing coupled to the holder; and a damper, which is coupled to the shaft, and which may dampen a rotation speed of the shaft. The damper can include: a first case, which is coupled to the shaft to move in linkage with the shaft; a second case, rotatably coupled to the first case; a viscous fluid, placed between the first case and the second case; and a stopper, which is coupled to the housing and configured to restrict the rotation angle of the second case. Thus, a mobile terminal may be unfolded automatically using a few number of parts without requiring energy consumption.

Abstract: An automatic hinge module and apparatus for opening and closing a toilet bowl. The module includes: a motor, which generates a driving force; a housing, of which one end is coupled to a body of the motor; a drive shaft, which is rotatably coupled to the housing, and which has one end coupled to an output shaft of the motor, such that the centers of rotation of the drive shaft and the output shaft coincide, to allow the drive shaft to transfer the driving force to the exterior; and a spring, one end of which is coupled to the housing, and the other end of which is coupled to the drive shaft, such that the spring provides an elastic force to the drive shaft in a direction of rotation of the drive shaft. Using this module, the cover and seat of a toilet can be opened and closed automatically.

Abstract: Disclosed herein is an electrical opening and closing type toilet bowl. The toilet bowl includes a main toilet bowl body, a toilet cover, a motor assembly, a friction hinge, and a detection means. The toilet cover is coupled to the main toilet bowl body in a hinged manner so as to be able to rotate and is configured to open and close the main toilet bowl. The motor assembly is mounted on the main toilet bowl body and electrically operates the toilet cover. The friction hinge allows the toilet cover to be manually opened and closed in the state in which external power necessary to operate the motor assembly and the detection means is completely interrupted, and a detection means. The detection means has one magnet and two hall sensors so as to detect the opening and closing of the toilet cover and the motion of the toilet cover.