JP2008061056A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform a channel search to the end even in an environment where a connection status of radio communication is adverse, and further to shorten a search time in a television receiver with a built-in radio communication apparatus. <P>SOLUTION: A television receiver comprises a tuner unit 101 which receives a broadcasting wave, selects a channel and extracts a video signal, and a monitor unit 102 which performs radio transmission with the tuner unit 101 and displays a video signal. In such a television receiver, the tuner unit 101 monitors a radio transmission status, stores a result of channel search by a channel search unit 104 into a storage unit 105 when radio transmission is disconnected, and transmits the result of the channel search stored in the storage unit 105 to the monitor unit 102 via a tuner radio unit 108 when the disconnected radio transmission is connected. Thus, even if radio transmission is disconnected in the middle, the search can be performed to the end and further, time reduction is enabled. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a television receiver with a built-in wireless communication apparatus, and more particularly, to a channel search function in a television receiver with a built-in wireless communication apparatus.

  Conventionally, a tuner unit and a monitor unit including a tuner are configured separately, and a television broadcast signal received by the tuner unit is transmitted to the monitor unit by wireless communication, and the monitor unit performs predetermined processing on the received television broadcast signal. A television receiver with a built-in wireless communication device that is provided as a television screen after being applied is known. In such a television receiver with a built-in wireless communication device, there is known a technique for searching for and presetting the optimum broadcast for the area used by the user for the purpose of improving the user's convenience (for example, Patent Document 1).

A conventional television receiver with a built-in wireless communication device needs to hold channel information acquired by channel search in the tuner unit and the monitor unit in order to display channel information on the monitor unit even when wireless communication is disconnected. . Therefore, when wireless communication is disconnected during execution of the channel search in the tuner unit, the channel search in the tuner unit is interrupted, and the channel search is resumed from the interrupted position after the wireless communication is restored, so that the channel information held by each other Kept the same.
JP 2005-333532 A

  However, the conventional configuration has a problem that the search function becomes slow because the channel search is stopped when the wireless connection is disconnected.

  In view of such circumstances, an object of the present invention is to provide a television receiver with a built-in wireless communication apparatus and a channel search method that can search to the end even when the wireless connection is cut off and can further reduce the time. To do.

  In order to solve the above problems, a television receiver according to the present invention includes a tuner unit that receives a broadcast wave, selects a channel and extracts a video signal, and a monitor unit that performs radio transmission with the tuner unit and displays the video signal. In the television receiver, the monitor unit synthesizes a monitor radio communication unit that performs radio transmission with the tuner unit, a video signal received by the monitor radio communication unit, and a graphic signal that represents a channel search result. A monitor video processing unit; and a video output unit for displaying an output signal of the monitor video processing unit, wherein the tuner unit extracts a signal of a specific frequency from a high frequency digital modulation signal including a video signal; A channel search unit for determining the presence or absence of a video signal in the signal extracted by the tuner, the video signal from the tuner, and the A tuner wireless communication unit that wirelessly transmits a channel search result by a channel search unit, a storage unit that stores data, and a wireless transmission state in the tuner wireless communication unit, and when the wireless transmission is disconnected, the channel search unit A controller that stores a channel search result in the storage unit and transmits the channel search result stored in the storage unit to the monitor unit via the tuner radio unit when a disconnected wireless transmission is connected; It is characterized by having.

  As described above, according to the television receiver with a built-in wireless communication apparatus of the present invention, when performing a channel search, even if the radio is disconnected halfway, the search can be performed to the end, and the time can be further reduced.

The best mode for carrying out the present invention will be described below with reference to the drawings.
(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of a television receiver with a built-in wireless communication apparatus according to Embodiment 1 of the present invention.

  A television receiver with a built-in wireless communication device receives a broadcast wave, extracts a signal of a specific frequency and selects a channel, and a monitor unit 102 that exchanges and displays a video signal extracted by the tuner unit 101 by wireless communication. It consists of.

  The tuner unit 101 determines a tuner microcomputer 102 that controls the tuner unit 101, a tuner 103 that selects a signal from a high-frequency digital modulation signal including a video signal, selects a channel, and the presence or absence of the video signal. A channel search unit 104, a storage unit 105 that stores a channel search result by the channel search unit 104, an MPEG encoding unit 107 that performs MPEG encoding to transmit a video signal from the tuner 103 using wireless communication, and an MPEG encoded signal The tuner wireless communication unit 108 transmits the video signal and the result of the channel search to the monitor unit 109.

  The monitor unit 109 includes a monitor microcomputer 110 that controls the monitor unit 109, a video signal transmitted from the tuner wireless communication unit 108, a monitor wireless communication unit 111 that receives a channel search result, and MPEG decoding the received video signal. An MPEG decoding unit 112, a monitor video processing unit 113 that synthesizes an MPEG decoded video signal and a graphic signal representing a channel search result, and a video output unit 114 that outputs the video processed video signal to a screen.

  Next, the operation of the channel search function of tuner unit 101 according to the first embodiment will be described with reference to the flowchart shown in FIG.

  Under the control of the tuner microcomputer 102, the tuner 103 performs channel selection for extracting a signal of a specific frequency from the high frequency digital modulation signal (step 201), and the channel search unit 104 determines the presence / absence of a video signal and performs channel search. (Step 202). The channel information regarding the detected channel is held by the tuner microcomputer 102. The tuner microcomputer 102 monitors the state of the tuner wireless communication unit 108. If the wireless connection is not established (“N” in step 203), the channel search result is stored in the storage unit 105 (step 205), and then the next step. The channel search is executed (step 202). If the wireless connection is established (“Y” in step 203), the tuner microcomputer 102 checks whether the channel search result is stored in the storage unit 105, and if it is stored, performs a channel search. The result is transmitted together with the stored channel search result to the monitor radio communication unit 111 via the tuner radio communication unit 108 (step 204). The tuner unit 101 MPEG-encodes the video signal from the tuner 103 by the MPEG encoding unit 107 (step 206), and transmits the MPEG-encoded video signal to the monitor wireless communication unit 111 via the tuner wireless communication unit 108 ( Step 207).

  As described above, the tuner unit 101 can shorten the channel search time by continuously executing the channel search even when the radio is disconnected.

  Next, the operation of the channel search function of the monitor unit 109 will be described using the flowchart shown in FIG.

  The monitor unit 109 receives the video signal transmitted from the tuner wireless communication unit 108 by the monitor wireless communication unit 111 (step 301), and decodes the received video signal by the MPEG decoding unit 112 (step 302). Further, the monitor wireless communication unit 111 receives the channel search result transmitted from the tuner wireless communication unit 108 (step 303), and the monitor microcomputer 110 reflects the received channel search result on the held channel information. The monitor microcomputer 110 monitors the state of the monitor wireless communication unit 111. If the monitor microcomputer 110 is wirelessly connected ("Y" in step 304), the channel search result is graphically synthesized by the video processing unit 113 (step 305). If not wirelessly connected (“N” in step 304), the graphic indicating wireless disconnection is synthesized by the video processing unit 113 (step 306), and the video signal subjected to the video processing is output to the screen by the video output unit 114. (Step 307).

  When an instruction to display channel information is given by a user operation, the monitor unit 109 displays channel information held by the monitor microcomputer 110. When the radio is disconnected, the monitor unit 109 displays the channel information received from the tuner unit 101 before disconnection, and after connection, displays the channel information reflecting the channel search result executed by the tuner unit 101 during disconnection. To do.

As described above, the tuner unit 101 continues to execute the channel search even when the radio is disconnected, stores the result in the storage unit 105, and stores the channel search result when the radio disconnection is resolved. By transmitting together with the channel search result stored in unit 105, the channel search time can be shortened while maintaining the same channel information held in tuner unit 101 and monitor unit 109.
(Embodiment 2)
FIG. 4 is a block diagram showing a configuration of a television receiver with a built-in wireless communication apparatus according to Embodiment 2 of the present invention.

  In the tuner unit 101, a tuner video processing unit 106 that synthesizes a graphic signal representing a result of channel search with a video signal is added from the first embodiment, and other components are the same as those in the first embodiment. Is omitted.

  Next, the operation of the channel search function of tuner unit 101 according to the second embodiment will be described with reference to the flowchart shown in FIG.

  Under the control of the tuner microcomputer 102, the tuner 103 selects a broadcast (step 401), and the channel search unit 104 determines the presence or absence of a video signal. (Step 402) The tuner microcomputer 102 monitors the state of the tuner wireless unit 108. If the wireless connection is not established (“N” in step 403), the channel search result is stored in the storage unit 105 (step 405). ) The next channel search is executed (step 402). If the wireless connection is established (“Y” in step 403), the tuner microcomputer 102 checks whether the channel search result is stored in the storage unit 105, and if it is stored, performs a channel search. The result is graphic-synthesized by the video processing unit 106 together with the stored channel search result (step 404), the video signal from the tuner 103 is MPEG-encoded by the MPEG encoding unit 107 (step 406), and the MPEG-encoded video signal is converted. The data is transmitted to the monitor wireless communication unit 111 (step 407).

  Next, the operation of the channel search function of the monitor unit 109 according to the second embodiment will be described using the flowchart shown in FIG.

  The monitor unit 109 receives the video signal transmitted from the tuner radio communication unit 108 by the monitor radio communication unit 111 (step 501), and decodes the received video signal by the MPEG decoding unit 112 (step 502). The monitor microcomputer 110 monitors the state of the monitor wireless communication unit 111, and only when the wireless connection is not established ("N" in step 503), the video processing unit 113 synthesizes a graphic indicating wireless disconnection (step 504), The video signal subjected to the video processing is output to the screen by the video output unit 114 (step 506).

  In the first and second embodiments, each means is controlled by a computer program. However, by recording this computer program on a recording medium such as a DVD, it can be transferred and independently. The present invention can also be easily implemented in a television receiver incorporating another wireless communication function.

  The television receiver of the present invention can perform a channel search to the end even in an environment where the wireless communication connection is poor, can further reduce the search time, and can be used in all AV devices with a built-in wireless communication function. Useful.

1 is a block diagram illustrating a television receiver with a built-in wireless communication device according to an embodiment of the present invention. The flowchart which shows the process sequence of the tuner part in one embodiment of this invention The flowchart which shows the process sequence of the monitor part in one embodiment of this invention The block diagram which shows the television receiver with a built-in radio | wireless communication apparatus in other embodiment of this invention. The flowchart which shows the process sequence of the tuner part in other embodiment of this invention. The flowchart which shows the process sequence of the monitor part in other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Tuner part 102 Tuner microcomputer 103 Tuner 104 Channel search part 105 Memory | storage part 106 Tuner image processing part 107 MPEG encoding part 108 Tuner radio | wireless communication part 109 Monitor part 110 Monitor microcomputer 111 Monitor radio | wireless communication part 112 MPEG decoding part 113 Video processing part 114 Monitor image processing unit

Claims (4)

In a television receiver including a tuner unit that receives a broadcast wave and selects a video signal by selecting a channel, and a monitor unit that performs wireless transmission with the tuner unit and displays the video signal.
The monitor unit is
A monitor wireless communication unit for performing wireless transmission with the tuner unit;
A monitor video processing unit that synthesizes a video signal received by the monitor wireless communication unit and a graphic signal representing a channel search result;
A video output unit for displaying an output signal of the monitor video processing unit,
The tuner section is
A tuner for extracting a signal of a specific frequency from a high-frequency digital modulation signal including a video signal;
A channel search unit for determining the presence or absence of a video signal in the signal extracted by the tuner;
A tuner wireless communication unit that wirelessly transmits a video signal from the tuner and a channel search result by the channel search unit;
A storage unit for storing data;
The wireless transmission state in the tuner wireless communication unit is monitored, and when the wireless transmission is disconnected, the channel search result by the channel search unit is stored in the storage unit, and when the disconnected wireless transmission is connected, the storage A television receiver comprising: a control unit that transmits a channel search result stored in the unit to the monitor unit via the tuner radio unit. The television receiver according to claim 1, wherein the tuner unit further includes a tuner video processing unit that synthesizes a graphic signal representing a channel search result by the channel search unit with a video signal. A channel search method in a television receiver comprising: a tuner unit that receives a broadcast wave and selects a video signal by selecting a channel; and a monitor unit that performs radio transmission with the tuner unit and displays the video signal.
The monitor unit is
A monitor wireless communication step for performing wireless transmission with the tuner unit;
A monitor video processing step of combining the video signal received in the monitor wireless communication step and a graphic signal representing a channel search result;
A video output step for displaying an output signal of the monitor video processing step,
The tuner section is
A tuner step for extracting a signal of a specific frequency from a high-frequency digital modulation signal including a video signal;
A channel search step for determining the presence or absence of a video signal in the signal extracted in the tuner step;
A tuner wireless communication step for wirelessly transmitting a video signal from the tuner step and a channel search result by the channel search step;
A storage step for storing data;
The wireless transmission state in the tuner wireless communication step is monitored, and when the wireless transmission is disconnected, the channel search result by the channel search step is stored by the storing step, and when the disconnected wireless transmission is connected, the storage And a control step of transmitting the channel search result stored in the step to the monitor unit by the tuner radio step. The channel search method according to claim 3, wherein the tuner unit further includes a tuner video processing step of combining a graphic signal representing a channel search result in the channel search step with a video signal.