JP2004254117A - Broadcast receiving apparatus and method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcast receiving apparatus and a broadcast receiving method with a simple configuration which efficiently receive broadcast radio waves from a satellite without interference. <P>SOLUTION: This apparatus is provided with first and second antennas 20a, 20b each receiving a satellite broadcast, a main body 15 for supporting the first and second antennas 20a, 20b, and a display unit 18 supported by the main body 15 so that it can be opened and closed. Both the first and second antennas 20a, 20b are provided on a top surface 15a in a using state in which the display unit 18 of the main body 15 is in an open position. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a portable broadcast receiving device for receiving a satellite broadcast. Further, the present invention relates to a broadcast receiving method for receiving a satellite broadcast.
[0002]
[Prior art]
As is well known, at present, television broadcasting, radio broadcasting, data broadcasting, and the like are performed via a satellite, and these broadcast contents can be received while being moved by a portable broadcast receiving terminal, that is, a so-called mobile TV (Television). Broadcast systems are being developed.
[0003]
By the way, in such a mobile TV broadcasting system, the size and weight of the broadcast receiving terminal are reduced, and the user can operate and view the broadcast content while holding it by hand. For this reason, when the mobile TV broadcasting system is put to practical use, it is important that the broadcast receiving terminal take measures to efficiently receive the broadcast wave from the satellite without interference.
[0004]
Here, Patent Literature 1 discloses a satellite broadcast system that can be received by a simple receiving apparatus that meets needs not only for indoors but also for mounting on a mobile object and for portable use. However, this patent document 1 is not suitable for practical use because the configuration of the transmitting antenna of the satellite itself is improved.
[0005]
Patent Document 2 discloses an antenna control device applied to a television receiver used in a moving state such as a liquid crystal television device and capable of performing stable and good reception of both video and audio.
[0006]
However, in Patent Document 2, a signal received by two receiving antennas is added, and gain control of a received signal obtained by one receiving antenna is performed based on the added signal level. Becomes complicated and unsuitable for practical use.
[0007]
[Patent Document 1]
Japanese Patent Laid-Open No. Hei 10-308941
[Patent Document 2]
JP-A-8-23482
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a broadcast receiving apparatus and a broadcast receiving method capable of efficiently receiving broadcast waves from satellites without interference with a simple configuration.
[0010]
[Means for Solving the Problems]
A broadcast receiving apparatus according to the present invention includes first and second antennas for receiving satellite broadcasting, a main body supporting the first and second antennas, and a display unit supported by the main body to be openable and closable. And the first and second antennas are both installed on a surface facing upward in a use state in which the display unit of the main body is in the open position.
[0011]
Also, the broadcast receiving method according to the present invention includes a step of receiving satellite broadcasts together with first and second antennas installed on a surface facing upward in a state of use of the main body, and a method of receiving satellite broadcasts using the first and second antennas. Adding a received broadcast signal to perform signal processing for reproduction.
[0012]
According to the configuration and method as described above, the first and second antennas are both installed on the surface facing upward in use, so that the broadcast radio waves from the satellite can be efficiently provided without interference with a simple configuration. It becomes possible to receive.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 schematically shows a mobile TV broadcasting system described in the first embodiment.
[0014]
That is, the broadcast content transmitted from the broadcast station 11 is received by the portable broadcast receiving terminal 13 possessed by the user via the satellite 12, and is provided to the user for viewing.
[0015]
Further, in this mobile TV broadcasting system, the broadcast radio wave from the satellite 12 is supplied via the gap filler 14 to the broadcast receiving terminal 13 existing in a place where the broadcast radio wave from the satellite 12 does not reach, for example, indoors or underground. ing.
[0016]
FIG. 2 shows an appearance of the broadcast receiving terminal 13. That is, the broadcast receiving terminal 13 includes the main body 15 formed in a thin rectangular parallelepiped shape. One end portion of the main body 15 in the longitudinal direction forms a battery housing portion 16 with the thickness of one flat surface 15a increasing stepwise.
[0017]
A portion of the one flat surface 15a of the main body 15 other than the battery housing portion 16 is opened and closed by a cover 17 formed in a thin rectangular parallelepiped shape. In this case, one peripheral portion of the cover body 17 is rotatably supported on one peripheral portion of the one flat surface 15a of the main body 15 that is connected to the battery housing portion 16.
[0018]
Thereby, the cover body 17 is at a desired angle from the closed position covering the portion of the one flat surface 15a of the main body 15 excluding the battery housing portion 16 as shown in FIG. It can be in a standing open position.
[0019]
Here, a liquid crystal panel 18 as an image display unit is provided on a flat surface 17a of the cover body 17 facing one flat surface 15a of the main body 15. An operation unit 19 having a plurality of operation elements is provided on a portion of one of the flat surfaces 15a of the main body 15 other than the battery storage unit 16.
[0020]
In this case, the operation unit 19 is installed in a region near one of the flat portions 15a of the main body 15 and the peripheral portion opposite to the peripheral portion supporting the cover body 17. In other words, the operation unit 19 is provided in an area of the one flat surface 15 a of the main body 15 at a predetermined distance from a peripheral portion supporting the cover body 17.
[0021]
In the main body 15, two antennas 20 a and 20 b formed in a substantially rectangular flat plate shape are embedded in a region of the one flat surface 15 a near the peripheral portion supporting the cover body 17. .
[0022]
FIG. 3 shows a signal processing system of the broadcast receiving terminal 13. That is, since the broadcast receiving terminal 13 employs a diversity receiving method capable of obtaining a maximum gain of 3 dB or more in order to stably receive a 2.6 GHz broadcast wave, the two antennas 20a, 20b.
[0023]
The broadcast signals received by the two antennas 20a and 20b are respectively supplied to an RF (Radio Frequency) module section 21 and added, and thereafter, a channel selection process, a CDM (Code Division Multiplex) demodulation process, an authentication process, and the like. Is applied.
[0024]
Then, the broadcast signal output from the RF module unit 21 is supplied to a decoding processing unit 22 and subjected to decoding processing of the MPEG (Moving Picture Experts Group) 4 standard.
[0025]
The decode processing unit 22 converts the decoded audio signal into an analog signal and outputs the analog signal to the outside via an audio output terminal 23. Further, the decoding processing unit 22 outputs the decoded video signal to the graphic processing unit 24.
[0026]
The graphic processing unit 24 performs predetermined graphic processing on the input video signal to convert it into an analog signal, and then outputs the analog signal to the liquid crystal panel 18 to display an image. I have.
[0027]
The above-described series of receiving operations is controlled by a system controller 26 including, for example, a CPU (Central Processing Unit). The system controller 26 receives the operation information obtained from the operation unit 19 and controls the units 21, 22, and 24 so that the operation state requested by the user is realized.
[0028]
In this case, the system controller 26 uses the first storage unit 27 as a work area based on a control program or various set values stored in a first storage unit 27 such as a nonvolatile memory. , 22 and 24 are controlled.
[0029]
Further, the system controller 26 converts the digital audio signal obtained by the decode processing unit 22 and the digital video signal obtained by the graphic processing unit 24 into a second storage unit 28 such as a 32 Mbyte flash memory. Can be recorded and reproduced.
[0030]
Here, referring again to FIG. 2, the broadcast receiving terminal 13 is such that the user holds the main body 15 with both hands so that the main body 15 is substantially horizontal, and holds the cover body 17 from one flat surface 15 a of the main body 15 to a predetermined position. The liquid crystal panel 18 is used with the liquid crystal panel 18 standing up at an angle.
[0031]
At this time, the user of the broadcast receiving terminal 13 is supported by the user such that the connection portion of the cover body 17 with the main body 15 is on the lower side, that is, the operation unit 19 faces upward.
[0032]
That is, in the normal use state, the broadcast receiving terminal 13 always has one flat surface 15a of the main body 15 directed upward, that is, the direction in which the broadcast wave from the satellite arrives.
[0033]
For this reason, by embedding the two antennas 20a and 20b together along one plane 15a of the main body 15 which always faces upward in a normal use state, the broadcasting from the satellite 12 is The radio wave is efficiently received without the incident angle being 0 °.
[0034]
Further, in one of the flat surfaces 15 a of the main body 15, the operation unit 19 is installed in a region separated by a predetermined distance from the peripheral portion supporting the cover body 17, a region close to the peripheral portion supporting the cover body 17, That is, the two antennas 20a and 20b are both installed in a region near the liquid crystal panel 18.
[0035]
That is, in a normal use state, the operation unit 19 is installed in an area near the user's hand, and the two antennas 20a and 20b are installed together in an area that is far from the user and does not need to reach for the user.
[0036]
That is, the installation position of the operation unit 19 and the installation positions of the antennas 20a and 20b are separated from each other in the main body 15. Therefore, the possibility that the two antennas 20a and 20b are covered by the user's hand is reduced, and the broadcast radio waves can be efficiently received without interference.
[0037]
FIG. 4 shows a second embodiment of the present invention, in which the same parts as those of FIG. In other words, in the second embodiment, the cover body 17 stands upright at a predetermined angle from the side surface 17b opposite to the peripheral edge portion supported by the main body 15, that is, from one flat surface 15a of the main body 15. The two antennas 20a and 20b are both buried in the side surface 17b facing upward in a normal use state.
[0038]
According to the configuration shown in the second embodiment, the two antennas 20a and 20b are both buried in the side surface 17a of the cover body 17 which always faces upward in a normal use state. The broadcast wave from the satellite 12 is efficiently received by the satellite 20b without interference.
[0039]
Also, the side surface 17a of the cover body 17 is a place where the user is unlikely to be covered in a normal use state, and the antennas 20a and 20b can efficiently receive broadcast waves from the satellite 12 without interference. It becomes possible.
[0040]
FIG. 5 shows a third embodiment of the present invention by assigning the same reference numerals to the same parts as in FIG. That is, in the third embodiment, one of the two antennas 20a and 20b is embedded in the battery housing 16 which is not covered by the cover 17 when the cover 17 is closed. are doing.
[0041]
According to the configuration shown in the third embodiment, one of the antennas 20a is installed in a portion of the main body 15 that is always exposed without being covered by the cover body 17 when the cover body 17 is closed. I am trying to do it.
[0042]
This makes it possible to efficiently receive broadcast waves from the satellite 12 even when the cover 17 is closed, for example, when receiving broadcast content that does not require viewing the liquid crystal panel 18 such as a radio broadcast. It becomes.
[0043]
FIG. 6 shows a fourth embodiment of the present invention by assigning the same reference numerals to the same parts as in FIG. In the fourth embodiment, a location held by the user is formed at a position different from the installation position of the antennas 20a and 20b of the main body 15.
[0044]
That is, a concave guide portion 29a for the user to place his thumb on the left hand is formed in the battery housing portion 16 of the main body 15, and the user places the right hand on the flat surface 15a at the end opposite to the battery housing portion 16 of the main body 15. A concave guide portion 29b for placing the thumb of the user is formed.
[0045]
In this way, by forming a place held by the user in the main body 15, the possibility that the two antennas 20a and 20b are covered by the user's hand can be further reduced, and the broadcast wave from the satellite 12 can be transmitted to the antennas 20a and 20a. 20b can be efficiently received without interference.
[0046]
In addition, if an operator that is relatively frequently used by the user is installed in the vicinity of the location of the user of the main body 15, the user is easily guided to grasp the holding location formed on the main body 15, and two The possibility that the antennas 20a and 20b are covered by the user's hand can be further reduced.
[0047]
In FIG. 6, a channel up / down key 30 for switching a channel to be tuned is provided near the guide unit 29a, and a volume up / down key 31 for adjusting the volume is provided near the guide unit 29b. An example is shown.
[0048]
FIG. 7 shows a fifth embodiment of the present invention. In the fifth embodiment, a broadcast receiving terminal 13 that does not include a cover 17 that opens and closes with respect to a main body 15 as in the first to fourth embodiments is described.
[0049]
That is, the broadcast receiving terminal 13 includes a main body 32 formed in a thin rectangular parallelepiped shape. In the normal use state, the user uses the broadcast receiving terminal 13 while holding the main body 32 upright.
[0050]
In this case, a liquid crystal panel 33 and an operation unit 34 having a plurality of operation elements are provided on one flat surface 32a of the main body 32 from above. The lowermost part of the main body 32 is a battery storage part 35.
[0051]
Here, in the main body 32, both antennas 36a and 36b are embedded in a surface 32b facing upward in a normal use state. Thus, the broadcast waves from the satellite 12 can be efficiently received by the two antennas 36a and 36b without interference.
[0052]
It should be noted that the present invention is not limited to the above-described embodiments, and can be variously modified and implemented without departing from the scope of the present invention. Further, it goes without saying that the characteristic configurations shown in each of the above-described embodiments can be arbitrarily combined and implemented within a range that does not cause inconsistency.
[0053]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to provide a broadcast receiving apparatus and a broadcast receiving method capable of efficiently receiving a broadcast wave from a satellite without interference with a simple configuration.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of the present invention, and is a diagram illustrating an outline of a mobile TV broadcasting system.
FIG. 2 is an exemplary perspective view shown for explaining the appearance of the broadcast receiving terminal according to the first embodiment;
FIG. 3 is a block diagram showing a signal processing system of the broadcast receiving terminal according to the first embodiment;
FIG. 4 is an exemplary perspective view showing the appearance of a broadcast receiving terminal according to a second embodiment of the present invention;
FIG. 5 is an exemplary perspective view shown for explaining an appearance of a broadcast receiving terminal according to a third embodiment of the present invention;
FIG. 6 is an exemplary perspective view showing the appearance of a broadcast receiving terminal according to a fourth embodiment of the present invention;
FIG. 7 is an exemplary perspective view showing the appearance of a broadcast receiving terminal according to a fifth embodiment of the present invention;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Broadcasting station, 12 ... Satellite, 13 ... Broadcast receiving terminal, 14 ... Gap filler, 15 ... Main body, 16 ... Battery storage part, 17 ... Cover body, 18 ... Liquid crystal panel, 19 ... Operation part, 20a, 20b ... Antenna , 21 RF module unit, 22 decode processing unit, 23 audio output terminal, 24 graphic processing unit, 25 video output terminal, 26 system controller, 27 first storage unit, 28 second storage Sections, 29a, 29b Guide section, 30 Channel up and down keys, 31 Volume up and down keys, 32 Body, 33 Liquid crystal panel, 34 Operation section, 35 Battery storage section, 36a, 36b Antenna .

Claims (16)

First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas,
A display unit supported to be openable and closable on the main body,
A broadcast receiving apparatus, wherein the first and second antennas both face upward in a use state in which the display unit is in an open position with respect to the main body. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas and has a display unit and an operation unit;
A broadcast receiving apparatus, wherein both the first and second antennas face upward when the display unit and the operation unit of the main body are used. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas,
A display unit supported to be openable and closable on the main body,
A broadcast receiving apparatus, wherein the first and second antennas are both installed on a surface of the main body facing upward in a use state with the display unit in an open position. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas,
The main body includes a display unit supported to open and close a surface facing upward in a state of use,
The broadcast receiving device, wherein the first and second antennas are both installed on a surface of the main body facing upward in a use state and covered with the display unit closed. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas,
The main body includes a display unit supported to open and close a surface facing upward in a state of use,
The first and second antennas are arranged on a surface facing upward in a state where the main body is used, and near a portion supporting the display unit in a surface covered with the display unit closed. A broadcast receiving device, which is installed together. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas and has a display unit and an operation unit;
A broadcast receiving apparatus, wherein both the first and second antennas are installed on a surface of the main body that faces upward when the display unit and the operation unit are used. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas,
A display unit supported to be openable and closable on the main body,
A broadcast receiving apparatus, wherein the first and second antennas are both installed on a surface of the display unit facing upward in use. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas,
A display unit supported to be openable and closable on the main body,
The first antenna was installed on a surface of the main body that was covered with the display unit closed, and the second antenna was installed on a surface of the main body that was not covered with the display unit closed. A broadcast receiving apparatus characterized by the above-mentioned. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas and has a display unit and an operation unit;
A broadcast receiving apparatus, wherein the first and second antennas are both installed at a position separated from the operation unit on a surface facing upward in a use state. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas and has an operation unit;
A display unit supported to be openable and closable on the main body,
A broadcast receiving apparatus, wherein the first and second antennas are both installed at a position separated from the operation unit when the display unit of the main body is in an open position in a use state and facing upward. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas and has an operation unit;
A display unit supported to be openable and closable on the main body,
The first and second antennas are both installed near a portion supporting the display unit in a surface facing upward in a use state in which the display unit of the main body is in an open position, and the display unit is installed. A broadcast receiving apparatus, wherein the operation unit is installed at a position distant from a supporting part. First and second antennas for receiving satellite broadcasts, respectively;
A main body that supports the first and second antennas,
A display unit supported to be openable and closable on the main body,
The first and second antennas are both installed on a surface facing upward in a use state where the display unit of the main body is in an open position, and a position different from the installation position of the first and second antennas of the main body. A broadcast receiving device, wherein a guide portion for grasping the broadcast receiver is formed. 13. The broadcast receiving device according to claim 12, wherein an operation unit is arranged near the guide unit. Receiving satellite broadcasts together with first and second antennas installed on a surface facing upward in a state of use of the main body;
Adding the broadcast signals received by the first and second antennas and performing signal processing for reproduction, respectively. In a use state in which the display unit supported to be openable and closable on the main body is in an open position, a step of receiving satellite broadcasting together with first and second antennas installed on a surface facing upward of the main body,
Adding the broadcast signals received by the first and second antennas and performing signal processing for reproduction, respectively. A step of receiving satellite broadcasts with the first and second antennas installed on a surface facing upward of the main body in a state where the display unit and the operation unit provided on the main body are used;
Adding the broadcast signals received by the first and second antennas and performing signal processing for reproduction, respectively.

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