JP3846296B2 - High frequency equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high-frequency device that receives a television signal with a personal computer or the like.
[0002]
[Prior art]
Hereinafter, a conventional high-frequency device will be described.
[0003]
As shown in FIG. 4, the conventional high-frequency device includes an operation unit 1 provided with a keyboard and a display unit 2 provided above the operation unit 1 so as to be rotatable. The display unit 2 is formed of a liquid crystal panel. A slot 3 is provided on the side of the operation unit 1, and a tuner unit 4 is inserted into the slot 3.
[0004]
The tuner unit 4 is provided with a monopole antenna 5. A device composed of the operation unit 1 and the display unit 2 will be described here using the personal computer 6 as an example.
[0005]
With this configuration, the personal computer 6 can have not only a function as an original computer but also a function as a television receiver.
[0006]
[Problems to be solved by the invention]
However, in such a conventional configuration, since a general monopole antenna 5 is used for signal input, there is a problem that although a uniform gain characteristic is obtained in a wide frequency range, a loss is large. In addition, when the TV channel is changed or the personal computer 6 is moved, the monopole antenna 5 must be moved each time to find an antenna position where an optimal TV image can be obtained. was there.
[0007]
The present invention has been made to solve such problems, and an object of the present invention is to provide a high-frequency device that does not bother antenna adjustment.
[0008]
[Means for Solving the Problems]
In order to achieve this object, the high-frequency device of the present invention provides a ground plate for an antenna that outputs a television signal to a television receiver, and this ground plate is provided below the antenna, and a tuned antenna is used for the antenna. The tuning antenna is formed by a tuning circuit in which a coil and a variable capacitor are connected in parallel .
[0009]
As a result, a high-frequency device that does not require antenna adjustment can be obtained.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
According to a first aspect of the present invention includes an operating unit, and the device comprising a display portion provided above while being connected to the operating section, in the Rutotomoni television signals provided in the apparatus A television receiver that selects a desired channel from the antenna, an antenna that outputs the television signal to the television receiver, and a connection line that connects the antenna and the television receiver and is covered with a radio wave absorber. wherein the television receiver includes a demodulator and the antenna connected to the tuner section, together with the output of the television receiver is connected to the display unit of the device via the signal processing circuit, said antenna in the above high-frequency device disposed on the upper portion of the display unit, together with the ground plate of the antenna is provided below the antenna, using the tuning antenna to the antenna, the Adjusting antenna is a high frequency device formed by tuned circuit and a coil and a variable capacitor is connected in parallel. As described above, since the tuning antenna is provided above the display unit, it is not necessary to adjust the orientation of the antenna every time the reception channel is changed or moved, and the handling becomes easy.
[0011]
In addition, since a tuning antenna is used, a highly sensitive received signal can be obtained while being small.
[0012]
In addition, since the connection line connecting the antenna and the tuner unit is covered with a radio wave absorber, noise radiated from the display unit does not travel through the connection line and wrap around the television receiver unit, thereby obtaining a clear image. be able to.
[0013]
The invention according to claim 2 is the high-frequency device according to claim 1 , wherein a radio wave absorber is provided between the ground plane and the display unit, and the radio wave absorber is provided between the ground plane and the display unit in this way. Since it is provided, noise or the like from the display unit does not enter the tuning antenna. Therefore, a clear image free from noise can be obtained.
[0014]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015]
FIG. 1 is a perspective view of the high-frequency device of the present invention. In FIG. 1, reference numeral 12 denotes a personal computer (used as an example of a device), and a keyboard (used as an example of an operation unit) 13 is provided on the upper surface of the main body 11. The main body 11 is provided with a display 14 that can be rotated. The display unit 14 is made of liquid crystal.
[0016]
The personal computer 12 is provided with a television receiver 19 that receives a television signal as shown in FIG. In FIG. 2, reference numeral 15 denotes a tuning antenna. The tuning antenna 15 is formed of a tuning circuit in which a coil 16 and a variable capacitor 17 are connected in parallel. The output of the tuning antenna 15 is input via a connection line 18 to a television receiver 19 that includes a tuner 25 and a demodulator 20 provided in the main body 11.
[0017]
The tuner unit 25 can select a desired channel from the television signal output from the tuning antenna 15. The output of the tuner unit 25 is sent to the demodulation unit 20. The output of the demodulating unit 20 is displayed on the display unit 14 formed of liquid crystal or the like via the signal processing unit 21. Reference numeral 10 denotes a terminal for applying a tuning voltage to the varicap diode 17 of the tuning antenna 15.
[0018]
In FIG. 1, a tuning antenna 15 is provided above the display unit 14. The output of the tuning antenna 15 is connected to the television receiver 19 provided in the main body 11 via the side surface of the display unit 14. In the present invention, the space between the tuning antenna 15 and the television receiver 19 is covered with a radio wave absorber 22. Thus, by covering with the radio wave absorber 22, noise from the display unit 14 can be prevented from entering the connection line 18. This makes it possible to obtain a beautiful image that is not disturbed.
[0019]
FIG. 3 is a cross-sectional view of the vicinity of the display unit and the antenna. In FIG. 3, reference numeral 14 denotes a display unit, and a tuning antenna 15 is provided above the display unit 14. A ground plate 23 is provided as a conductor below the tuning antenna 15, and a radio wave absorber 24 is provided between the ground plate 23 and the display unit 14. As described above, since the radio wave absorber 24 is provided between the ground plane 23 and the display unit 14, noise from the display unit 14 does not enter the tuning antenna 15 and prevents the noise from entering the tuner unit 25.
[0020]
Further, since the tuning antenna 15 is exposed above the display unit 14, it can receive external radio waves with high sensitivity and can receive television signals with high sensitivity.
[0021]
Furthermore, since the tuning antenna 15 is an omnidirectional antenna, it can be received without changing the orientation of the personal computer 12.
[0022]
In this embodiment, the notebook computer is used as an example of the personal computer 12. However, the personal computer 12 is not limited to the notebook computer, and can be used for a desktop personal computer. Moreover, you may use for a portable terminal.
[0023]
【The invention's effect】
As described above, according to the present invention, the antenna that outputs a television signal to the television receiver is provided with a ground plane, the ground plane is provided below the antenna, and the tuning antenna is used as the antenna. Is formed by a tuning circuit in which a coil and a variable capacitor are connected in parallel, so there is no need to adjust the tuning antenna each time it is moved, and handling is easy.
[0024]
In addition, since a tuning antenna is used, there is an effect that a small and highly sensitive television receiver can be realized. Furthermore, since the connection line connecting the antenna and the tuner unit is covered with a radio wave absorber, noise radiated from the display unit does not travel through this connection line and wrap around the television receiver unit to obtain a clear image. be able to.
[Brief description of the drawings]
FIG. 1 is a perspective view of a high-frequency device according to an embodiment of the present invention. FIG. 2 is a block diagram of a television receiver constituting the high-frequency device. FIG. ] Perspective view of a conventional high-frequency device [Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Main body part 12 Personal computer 13 Keyboard 14 Display part 15 Tuning antenna 18 Connection line 19 Television receiving part 20 Demodulation part 21 Signal processing part 22 Radio wave absorber 24 Radio wave absorber 25 Tuner part

Claims (2)

An operation unit, and the device comprising a display portion provided above while being connected to the operating section, and a TV receiver for music selection a desired channel from among Rutotomoni television signals provided in this device, this comprising an antenna for outputting the television signal to the television receiver, and a connecting line which is covered with the radio wave absorber as well as connection between the antenna and the television receiver, the television receiver, the antenna A high-frequency device having a connected tuner unit and a demodulating unit, the output of the television receiving unit being connected to the display unit of the device via a signal processing circuit, and the antenna being disposed above the display unit In this embodiment, the ground plane of the antenna is provided below the antenna, and a tuning antenna is used as the antenna. RF device and capacitor are formed by the tuning circuit connected in parallel. The high-frequency device according to claim 1 , wherein a radio wave absorber is provided between a ground plane and the display unit.

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