Abstract: The present invention discloses a broadcast reception device including a connection section for connecting to a smart antenna that switches directivity or a unidirectional antenna with fixed directivity connected; a first channel search section for executing channel search in the smart antenna; a second channel search section for executing channel search in the unidirectional antenna; a communication section for providing the connected smart antenna with power and a control signal; and a connection detection section for detecting a voltage of the communication section varied by voltage drop caused by the communication section connected to the smart antenna, and detect one of presence and absence of connection of the smart antenna based on a result of the detection, the first channel search section is selected to execute the channel search when the connection detection section detects the connection of the smart antenna, and the second channel search section is selected to execute the channel search when the c

Abstract: An appropriate direction and gain value of a smart antenna are efficiently searched for. The MPU 11 of the set top box functionally has the condition setting portion which selects a gain from the second predetermined number of steps of gains and sets it, and selects a direction from the first predetermined number of directions and sets it, the receiving state evaluation portion which generates receiving quality information that indicates the quality of a receiving state of a television broadcast received via the receiving portion, the receiving determination portion which determines whether or not a receiving state is good based on the generated receiving quality information, and the search end portion which when the receiving state is determined good, records the set one gain and one direction as the receiving conditions into the condition storage portion and makes the condition setting portion end the setting processings of gains and directions.

Abstract: A digital television combination integrated circuit is employed which includes a video signal D/A converter which converts a digital video signal to an analog video signal, and an audio signal D/A converter which converts a digital audio signal to an analog audio signal; there are provided a level shift circuit which extracts a luminance signal in the video signal which is outputted from the video signal D/A converter, and a low pass filter which extracts the DC component of the output signal of this level shift circuit; and the output signal of this low pass filter is supplied as a control voltage signal for gain control of an audio amplification circuit.

Abstract: This information display system includes an input device, a computer, a receiving apparatus including a receiving portion and a control portion and a display portion, and a user can set whether to transmit operating information from the computer to the receiving apparatus in at least either the computer or the receiving apparatus in the information display system.

Abstract: The present invention discloses a broadcast reception device including a connection section for connecting to a smart antenna that switches directivity or a unidirectional antenna with fixed directivity connected; a first channel search section for executing channel search in the smart antenna; a second channel search section for executing channel search in the unidirectional antenna; a communication section for providing the connected smart antenna with power and a control signal; and a connection detection section for detecting a voltage of the communication section varied by voltage drop caused by the communication section connected to the smart antenna, and detect one of presence and absence of connection of the smart antenna based on a result of the detection, the first channel search section is selected to execute the channel search when the connection detection section detects the connection of the smart antenna, and the second channel search section is selected to execute the channel search when the c

Abstract: An appropriate direction and gain value of a smart antenna are efficiently searched for. The MPU 11 of the set top box 1 functionally has the condition setting portion 112 which selects a gain from the second predetermined number of steps of gains and sets it, and selects a direction from the first predetermined number of directions and sets it, the receiving state evaluation portion 113 which generates receiving quality information that indicates the quality of a receiving state of a television broadcast received via the receiving portion 15, the receiving determination portion 114 which determines whether or not a receiving state is good based on the generated receiving quality information, and the search end potion which when the receiving state is determined good, records the set one gain and one direction as the receiving conditions into the condition storage portion 123 and makes the condition setting portion 112 end the setting processings of gains and directions.

Abstract: An image processing apparatus includes a device detecting portion which performs detection of device portions which are connected to a communication bus; a storing portion which stores kind information which shows kind of all the device portions that can be connected to the communication bus and general-purpose control program which can control all the device portions that can be connected to the communication bus; and a control portion which reads out the general-purpose control program from the storing portion to execute when control of the respective device portions which are provided in a group of devices is performed. The control portion discriminates between kind of the device portions which are connected to the communication bus and kind of the device portions which are not connected to the communication bus utilizing the detection result and the kind information.

Abstract: A digital television combination integrated circuit is employed which includes a video signal D/A converter which converts a digital video signal to an analog video signal, and an audio signal D/A converter which converts a digital audio signal to an analog audio signal; there are provided a level shift circuit which extracts a luminance signal in the video signal which is outputted from the video signal D/A converter, and a low pass filter which extracts the DC component of the output signal of this level shift circuit; and the output signal of this low pass filter is supplied as a control voltage signal for gain control of an audio amplification circuit.

Abstract: A mounting structure of a ball grid array type IC includes resin guide ribs provided on opposite sides of a body portion of the ball grid array type IC, engaging pawls formed at distal ends of the guide ribs so as to be locked into locking holes of a board, springs in which the guide ribs are inserted respectively, and height adjusting ribs provided at places slightly inwardly distant from the guide ribs respectively so as to protrude from the body portion. The springs prevent the ball grid array type IC from being strongly pressed against the board when the ball grid array type IC is mounted on the board. The height adjusting ribs adjust the ball grid array type IC to a predetermined height relative to the board.

Abstract: A digital broadcast receiver has a function of selecting, at the time of receiving a digital broadcast, signals to be fed back to an AGC circuit depending on whether an analog broadcast channel exists adjacent to a channel to be received or not. When an analog broadcast channel exists adjacent to a channel to be received, a feedback system change-over switch is connected to a second feedback system and the voltage level of analog signals detected by an analog signal level detecting circuit is fed back. When an analog broadcast channel does not exist adjacent to the channel to be received, the feedback system change-over switch is connected to a first feedback system, and the voltage level of digital signals in a demodulating IC detected by a digital signal level detecting circuit is fed back. In such a manner, reception performance is improved.

Abstract: A mounting structure of a ball grid array type IC includes resin guide ribs provided on opposite sides of a body portion of the ball grid array type IC, engaging pawls formed at distal ends of the guide ribs so as to be locked into locking holes of a board, springs in which the guide ribs are inserted respectively, and height adjusting ribs provided at places slightly inwardly distant from the guide ribs respectively so as to protrude from the body portion. The springs prevent the ball grid array type IC from being strongly pressed against the board when the ball grid array type IC is mounted on the board. The height adjusting ribs adjust the ball grid array type IC to a predetermined height relative to the board.

Abstract: A digital broadcast receiver has a function of selecting, at the time of receiving a digital broadcast, signals to be fed back to an AGC circuit depending on whether an analog broadcast channel exists adjacent to a channel to be received or not. When an analog broadcast channel exists adjacent to a channel to be received, a feedback system change-over switch is connected to a second feedback system and the voltage level of analog signals detected by an analog signal level detecting circuit is fed back. When an analog broadcast channel does not exist adjacent to the channel to be received, the feedback system change-over switch is connected to a first feedback system, and the voltage level of digital signals in a demodulating IC detected by a digital signal level detecting circuit is fed back. In such a manner, reception performance is improved.

Abstract: A disc apparatus includes a micro-computer. The micro-computer causes a pickup to move to a predetermined position. A track pitch is calculated from a distance over which the pickup has moved and a number of tracks detected during the movement thereof over that distance. In response to a track jump command, tracks to be jumped over are determined in number by the distance from a center of a disc to a current position, a distance from the center of the disc to a target position, and a track pitch measured.

Abstract: A disc apparatus includes a micro-computer. The micro-computer predicts a number of tracks for deceleration from a total number of tracks to be jumped, to thereby calculate a number of tracks for acceleration from the number of tracks for deceleration and the total number of tracks. A thread motor is accelerated until a number of tracks being jumped becomes equal to the number of tracks for acceleration. Thereafter, the thread motor is decelerated to a rotational speed lower than a determined value.