JP2005039398A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television receiver capable of refreshing OSD data in preparation for breake of the OSD data while operating by preferentially accepting a drawing request from a user. <P>SOLUTION: When a signal with a drawing request by the OSD from a remote control receiver is inputted (#11), drawing processing is performed (#12). After that, if the OSD is cleared from a screen (#13), a timer is started counting (#14). If the timer counts a predetermined time (#15) and the OSD is not displayed on the screen (YES in #16), the OSD data are refreshed (#17) and counting of the timer is stopped (#18), and then the processing returns to #11. Meanwhile, the OSD is displayed on the screen (NO in #13, #16), the processing returns to #11 without refreshing the OSD data. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a television receiver.
[0002]
[Prior art]
The television receiver is provided with an OSD output circuit so that various types of information represented by display of channel numbers and the like can be displayed by OSD (On Screen Display). The OSD output circuit is generally configured by a video composition circuit that superimposes OSD data on video data output from the video output circuit, a storage circuit that stores the superimposed OSD data, and the like. However, there is a possibility that the OSD data stored in the storage circuit is destroyed by some factor (for example, mixing of line noise, etc.), and when such destroyed OSD data is used for screen display, An abnormal screen is displayed, which makes the user uncomfortable.
[0003]
Therefore, an OSD control method configured to refresh by periodically releasing / re-acquiring OSD data stored in a storage circuit is known (see, for example, Patent Document 1). Also, a monitor device configured to transfer pre-compressed OSD data stored in the program memory to the OSD output circuit, and an expansion circuit provided in the OSD output circuit expands the OSD data and performs OSD display. Is known (see, for example, Patent Document 2).
[0004]
[Patent Document 1]
JP 2000-23059 A
[Patent Document 2]
JP 2001-86424 A
[0005]
[Problems to be solved by the invention]
By the way, recent television receivers are configured to display not only simple channel number display but also various information such as simple program information on the OSD, and accordingly, the resolution of the OSD display screen is set high. (For example, 700 × 480 dots), the amount of data that must be processed has also increased dramatically. Therefore, the time required for refreshing the OSD data is longer than before. However, in the OSD control method disclosed in Patent Document 1, since the OSD data is periodically refreshed, if the refresh process is started immediately before the user inputs a command accompanied by an OSD drawing request, the refresh process is performed. Another process cannot be performed until the process is completed, which causes discomfort to the user. Further, even if the technique of the monitor device disclosed in Patent Document 2 is applied, if the data amount of OSD data increases, it will take time to compress / decompress, so that the above-described problems can be solved. Can not.
[0006]
The present invention has been made to solve the above-described problems, and is a television capable of refreshing OSD data in preparation for destruction of OSD data while operating by receiving a user's drawing request with priority. An object is to provide a receiving apparatus.
[0007]
[Means for Solving the Problems]
To achieve the above object, the invention of claim 1 is a tuner for receiving a television broadcast signal, a decoder for separating video data and audio data from the received television broadcast signal, and decoding the decoded video data and audio. A video / audio output unit that converts the data into data that can be output by the monitor device and outputs the data, and a predetermined OSD (On Screen Display) data is superimposed on the video data output by the video / audio output unit. An OSD output unit for outputting, a remote control device and a main body operation unit operated by a user and outputting a predetermined signal corresponding to the operation, a remote control receiving unit for receiving a signal from the remote control signal, and a timer for counting time A storage unit that stores a predetermined control program, and a control unit that controls the entire apparatus according to the predetermined program. In the video receiver, the OSD output unit stores a first memory for storing the OSD data to be superimposed on the video data output from the video / audio output unit, and a first memory for storing the data to be output to the first memory. 2 and the memory where the stored data is not destroyed by the influence of line noise, the OSD data input from the control unit is stored and output to the second memory, and the OSD data is And a refresh buffer for storing backup data for use when releasing / re-acquiring (refreshing) OSD data stored in the second memory and the second memory, and a location where the stored data is not destroyed by the influence of line noise And a drawing process reception buffer for receiving and storing a drawing process command from the control unit. After OSD drawing processing, when OSD is cleared from the screen of the monitor device, the timer starts counting, and a certain time elapses without a drawing request being output from the remote control device or the main body operation unit. When OSD is not displayed, the OSD data stored in the first memory and the second memory is refreshed using the backup data stored in the refresh buffer, so that the user's drawing request is given priority. In this configuration, the OSD data is refreshed when there is no drawing request while receiving and operating automatically.
[0008]
According to this configuration, the OSD data is refreshed when the OSD is cleared from the screen of the monitor device and the OSD is not displayed after a predetermined time has elapsed. That is, when there is a user's drawing request within the predetermined time, the drawing request is preferentially received and the operation is performed. On the other hand, when there is no drawing request, it is determined that there will be no drawing request for a while, and the OSD data is refreshed. The OSD data stored in the first memory and the second memory can be refreshed by using backup data stored in the refresh buffer. Since the refresh buffer is arranged at a place where the stored data is not destroyed by the influence of line noise, there is no possibility that the backup data stored in the buffer is destroyed. In addition, since the drawing process reception buffer is provided, it is possible to refresh the OSD data while receiving drawing requests from the user and sequentially storing them. Thereby, after the refresh is completed, OSD display can be sequentially performed in response to a plurality of drawing requests stored in the buffer.
[0009]
The invention of claim 2 is a tuner that receives a television broadcast signal, a decoder that separates and decodes video data and audio data from the received television broadcast signal, and a monitor device that can output the decoded video data and audio data A video / audio output unit that converts the video data and outputs the video data, an OSD output unit that superimposes predetermined OSD (On Screen Display) data on the video data output by the video / audio output unit, and outputs the data to the monitor device; In a television receiver including an operation unit that is operated by a user and outputs a predetermined signal corresponding to the operation, a storage unit that stores a predetermined control program, and a control unit that controls the entire apparatus according to the predetermined program The OSD output unit has a memory for storing OSD data to be superimposed on the video data output from the video / audio output unit. Then, after the OSD drawing process is performed, the control unit reads the backup data stored in the storage unit and stores it in the memory of the OSD output unit when the OSD is cleared from the screen of the monitor device. The OSD data is refreshed by releasing / re-acquiring OSD data.
[0010]
According to this configuration, when the OSD is cleared from the screen of the monitor device, the OSD data is refreshed. Therefore, the refresh can be performed only when the OSD is not displayed on the screen of the monitor device, but it is necessary to prepare a refresh buffer, a drawing process reception buffer, and a timer as in the first aspect of the invention. The cost of the apparatus can be reduced.
[0011]
The invention according to claim 3 is the television receiver according to claim 2, further comprising a timer for counting time, and after the OSD drawing process is performed by the control unit, the OSD is cleared from the screen of the monitor device When the timer starts counting, when a certain time has passed without the drawing request being output from the operation unit and the OSD is not displayed on the screen, the OSD data stored in the memory is refreshed, so that the user The OSD data is refreshed when there is no drawing request while operating with priority drawing requests.
[0012]
According to this configuration, the OSD data is refreshed when the OSD is cleared from the screen of the monitor device and the OSD is not displayed after a predetermined time has elapsed. That is, when there is a user's drawing request within the predetermined time, the drawing request is preferentially received and the operation is performed. On the other hand, when there is no drawing request, it is determined that there will be no drawing request for a while, and the OSD data is refreshed.
[0013]
According to a fourth aspect of the present invention, in the television receiver according to the third aspect, the OSD output unit stores the OSD data input from the control unit and outputs the OSD data to the memory, and the OSD data is stored in the memory. It has a refresh buffer that stores it as backup data that is used when releasing / re-acquiring (refreshing) the stored OSD data, and the refresh buffer is located where the stored data is not destroyed by the effects of line noise It is what.
[0014]
According to this configuration, since the OSD data stored in the memory is refreshed using the backup data stored in the refresh buffer, the OSD data stored in the memory is destroyed for some reason. Even so, normal OSD display can be performed after refresh. Since the refresh buffer is arranged at a place where the stored data is not destroyed by the influence of line noise, there is no possibility that the backup data stored in the buffer is destroyed.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
A television receiver according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a block configuration of a television receiver. The television receiving device 1 is a device that receives a television broadcast signal transmitted from a broadcasting station, converts it into video data and audio data that can be processed by a monitor device 30 connected to the device, and outputs the data. The television receiver 1 includes a tuner 2 that receives a broadcast signal, a decoder 3 that separates and decodes video data, audio data, and other attached data from the broadcast signal received by the tuner 2, and the decoded video data and audio. A video / audio output unit 4 that converts the data into video data and audio data that can be output by the monitor device, and predetermined OSD (On Screen Display) data is superimposed on the video data output by the video / audio output unit 4 for monitoring An OSD output unit 5 that outputs to the device 30, a timer 6 that counts time, a control unit 7 that controls the entire device, a storage unit 8 that stores a control program of the control unit 7, and a remote controller operated by a user A remote control receiver 9 that receives a signal output from the device 10 (operation unit), and an operation for a user to input a command to the television receiver 1. Key portion 11 (main body operation portion, the operation portion) and a like. When the remote control device 10 is operated by the user, a signal output from the remote control device 10 is input to the control unit 7 via the remote control receiving unit 9, and the control unit 7 outputs a drawing process command corresponding to the input signal. The data is output to the OSD output unit 5 as necessary. Even when the operation key unit 11 is operated by the user, a signal corresponding to the key operated by the user is input from the operation key unit 11 to the control unit 7, and the control unit 7 performs a drawing process command corresponding to the input signal. Is output to the OSD output unit 5 as necessary. The OSD data to be superimposed on the video data is stored in the RAM (front screen memory 22 and back screen memory 23 described later) of the OSD output unit 5.
[0016]
The television receiver 1 has a function of automatically refreshing the OSD data stored in the RAM of the OSD output unit 5 without bothering the user and even when the OSD data is destroyed. The destroyed OSD data is promptly restored when no user operation is performed, and an accurate OSD display can be performed. Although the situation that the OSD data is destroyed rarely occurs, the OSD data may be destroyed for some reason such as the influence of line noise while the television receiver 1 is in use. It can be said that the function of automatically refreshing the OSD data is a highly effective function.
[0017]
FIG. 2 shows a block configuration of the OSD output unit 5. The OSD output unit 5 stores the video composition unit 21 that superimposes the OSD data on the video data output from the video / audio output unit 4 and outputs the superimposed data to the monitor device 30, and the OSD data superimposed by the video composition unit 21. Front screen memory (first memory) 22, back screen memory (second memory) 23 for storing data to be output to the front screen memory 22, front screen memory 22 and back screen memory 23 Are composed of a refresh buffer 24 for storing backup data used when refreshing the OSD data stored in the memory, a drawing processing reception buffer 25 for receiving and storing a drawing processing command from the control unit 7, and the like. The OSD data is refreshed by releasing / re-acquiring OSD data in the back screen memory 23 using the OSD data stored in the refresh buffer 24, and then using the OSD data in the back screen memory 23 for the front screen. This is done by reflecting it in the memory 22.
[0018]
The reason for having two memories, that is, the front screen memory 22 and the back screen memory 23 as the memories for storing the OSD data is due to the delay in creating the OSD data with respect to the drawing of the monitor device. This is to prevent flickering of the OSD display screen. That is, the OSD data created by the control unit 7 is sequentially stored in the back screen memory 23 via the refresh buffer 24, and all the OSD data to be drawn is stored in the back screen memory 23. The OSD data stored in the back screen memory 23 is transferred to the front screen memory 22. Since the transfer speed between the back screen memory 23 and the front screen memory 22 is sufficiently higher than the drawing speed of the monitor device 30, the above-described configuration prevents flickering of the OSD display screen. Can do.
[0019]
The refresh buffer 24 and the drawing process reception buffer 25 are arranged in a place where the stored data is not destroyed by the influence of line noise. For example, in consideration of promotion of downsizing of the apparatus, it is desirable to consolidate the control unit 7, the storage unit 8, the refresh buffer 24, and the drawing process reception buffer 25 into one chip. The refresh buffer 24 stores the OSD data input from the control unit 7 and outputs the OSD data to the back screen memory 23. The OSD data stored in the refresh buffer 24 accepts the drawing processing command output from the utilization 7 as backup data used when refreshing the OSD data stored in the front screen memory 22 and the back screen memory 23. And store them sequentially. As with the OSD output unit 5, a system for processing the OSD data including the front screen memory 22, the back screen memory 23, the refresh buffer 24, and the like, and the drawing command including the drawing processing reception buffer 25 and the like are processed. The method of performing OSD drawing indirectly from the control unit 7 by using a separate system as the system to be used is required to sequentially display pictures on the way (OSD) when a plurality of drawing processing commands are continuously input. Ideal for programs that perform complex drawing processing.
[0020]
According to the television receiver 1 configured as described above, since the OSD data stored in the back screen memory 23 is refreshed using the backup data stored in the refresh buffer 24, the front screen memory 22. Even if the OSD data stored in the back screen memory 23 is destroyed for some reason, normal OSD display can be performed after the refresh. Further, since the drawing process reception buffer 25 is provided, the OSD data can be refreshed while receiving the drawing process command output from the control unit 7 and sequentially storing it. Thus, after the refresh is completed, OSD display can be sequentially performed in response to a plurality of drawing requests stored in the drawing process reception buffer 25. Further, since the refresh buffer 24 and the drawing process reception buffer 25 are arranged in a place where the stored data is not destroyed by the influence of line noise, the backup buffer 24 stored in the refresh buffer 24 and the drawing process reception buffer 25 is stored. There is no possibility that the data and the drawing processing command are destroyed.
[0021]
The television receiver 1 of the present embodiment can refresh OSD data in one of two modes described below. The first mode is a mode in which the OSD data is refreshed immediately after the OSD display on the screen of the monitor device 30 is cleared (mode without refresh timer), and the second mode is constant after the OSD display is cleared. In this mode, the OSD data is refreshed after a lapse of time (refresh timer mode).
[0022]
Hereinafter, the operation of the control unit 7 in the no refresh timer mode will be described with reference to FIG. When a signal accompanied by an OSD drawing request is input from the remote control receiver 9 (# 1), drawing processing is performed (# 2). Thereafter, when the OSD is cleared from the screen and no OSD is displayed on the screen (YES in # 3), the OSD data is refreshed (# 4), and the process returns to # 1. If OSD is continuously displayed on the screen (NO in # 3), the process returns to # 1 without refreshing the OSD data. Note that when the signal accompanying the OSD drawing request is not input from the remote control receiver 9 in # 1, the process is terminated.
[0023]
According to this mode, since the OSD data is refreshed when the OSD is not displayed, the destroyed OSD data can be automatically restored without bothering the user. Further, when only the mode without the refresh timer is used, the timer 6 is not necessary, so that the cost of the apparatus can be reduced.
[0024]
In the refresh timer-less mode, since the OSD data is refreshed every time the OSD display is turned off, the remote controller 10 or the operation key unit 11 is continuously operated by the user, and the OSD display / non-display is repeated. If it must be performed, the above processing may hang up, and the apparatus may be delayed in response to a user's drawing request. Therefore, such a problem can be solved by using the refresh timer mode described below.
[0025]
The operation of the control unit 7 in the refresh timer mode will be described with reference to FIG. When a signal accompanied by a drawing request by OSD is input from the remote control receiving unit 9 (# 11), drawing processing is performed (# 12). Thereafter, when the OSD is cleared from the screen (YES in # 13), the timer (OSD refresh timer) 6 starts counting (# 14). When the timer 6 counts a certain time (# 15) and the OSD is not displayed on the screen (YES in # 16), the OSD data is refreshed (# 17), and the timer 6 count is stopped. Later (# 18), the process returns to # 11. On the other hand, if the OSD is continuously displayed on the screen in # 13 (NO in # 13), the process returns to # 11. If the OSD is displayed on the screen at # 16 (NO at # 16), the process returns to # 11 without refreshing the OSD data. Note that when the signal accompanying the OSD drawing request is not input from the remote control receiving unit 9 in # 11, the process is terminated. Note that the fixed time in # 15 is, for example, that no signal is input from the remote control receiver 9 for several tens of seconds, and after that, there is no drawing request for a while (time required for refreshing the OSD data). It is enough time to be able to judge.
[0026]
In this mode, when the OSD is cleared from the screen of the monitor device 30 and there is a user's drawing request within a certain time thereafter, the drawing request is preferentially received and the operation is performed. On the other hand, when there is no drawing request, it is determined that there will be no drawing request for a while, and the OSD data is refreshed. As a result, when the OSD display / non-display must be repeatedly performed by the user's operation, the OSD data is not refreshed, so that the response of the apparatus to the user's drawing request is not delayed. On the other hand, if there is no drawing request within a certain period of time, it is determined that there will be no drawing request for a while, and the OSD data is refreshed, so the user is bothered with the destroyed OSD data. You can refresh without having to.
[0027]
The present invention is not limited to the configuration of the above-described embodiment, and various modifications are possible. For example, the OSD output unit is not limited to the configuration shown in FIG. 2, but the configuration shown in FIG. It may be. The OSD output unit 27 has a simple configuration in which the drawing process reception buffer 25 is omitted from the OSD output unit 5 in FIG. 2, and the cost of the television receiver 1 can be reduced. The technique of directly drawing OSD by a circuit that omits the drawing process reception buffer 25, such as the OSD output unit 27, is that when a plurality of drawing process commands are continuously input, an intermediate picture (OSD) is drawn. Is not suitable for a program that performs only simple drawing processing.
[0028]
The OSD output unit may have the configuration shown in FIG. The OSD output unit 28 has a configuration in which the refresh buffer 24 is further omitted from the OSD output unit 27 in FIG. A method of releasing / re-acquiring OSD data stored in the front screen memory 22 and the back screen memory 23 by a circuit that does not include the refresh buffer 24, such as the OSD output unit 28, is a device manufacturing cost. This is effective when the refresh buffer 24 cannot be prepared due to the above problems. Which OSD output unit is to be used may be determined according to the grade of the television receiver 1 or the like. Furthermore, the television receiver 1 may be in a form incorporated in a television receiver.
[0029]
【The invention's effect】
As described above, according to the first aspect of the present invention, when there is a user's drawing request within a certain period of time, the drawing request is preferentially received and the operation is performed. There is no delay and the usability of the device can be improved. On the other hand, if there is no drawing request within a certain period of time, it is determined that there will be no drawing request for a while, and the OSD data is refreshed, so the user is bothered with the destroyed OSD data. You can refresh without having to. Further, since the OSD data stored in the first memory and the second memory is refreshed using the backup data stored in the refresh buffer, the OSD data stored in each memory is for some reason. Even if it is destroyed, normal OSD display can be performed after refresh. In addition, since the drawing process reception buffer is provided, it is possible to refresh the OSD data while receiving drawing requests from the user and sequentially storing them. Thereby, after the refresh is completed, OSD display can be sequentially performed in response to a plurality of drawing requests stored in the buffer.
[0030]
According to the invention of claim 2, since the OSD data is refreshed when the OSD is not displayed, the destroyed OSD data can be refreshed without bothering the user. In addition, since it is not necessary to prepare a refresh buffer, a drawing process reception buffer, and a timer, the cost of the apparatus can be reduced.
[0031]
According to the third aspect of the present invention, when there is a user's drawing request within a certain period of time, the drawing request is preferentially received and the operation is performed, so that the response of the apparatus is not delayed by the user's drawing request. On the other hand, when there is no drawing request, the OSD data is refreshed, so that the destroyed OSD data can be refreshed without bothering the user.
[0032]
Since the OSD data stored in the memory is refreshed using the backup data stored in the refresh buffer, the OSD data stored in the memory is destroyed for some reason. Even in such a case, normal OSD display can be performed after refresh.
[Brief description of the drawings]
FIG. 1 is a block diagram of a television receiver according to an embodiment of the present invention.
FIG. 2 is a block configuration diagram of an OSD output unit provided in the apparatus.
FIG. 3 is a flowchart showing the operation of the control unit in the refresh timer-less mode of the apparatus.
FIG. 4 is a flowchart showing the operation of the control unit in the refresh timer mode of the apparatus.
FIG. 5 is a block diagram of another OSD output unit provided in the apparatus.
FIG. 6 is a block configuration diagram of still another OSD output unit provided in the apparatus.
[Explanation of symbols]
1 TV receiver
2 Tuner
3 Decoder
4 Video / Audio output section
5 OSD output section
6 Timer
7 Control unit
8 storage unit
9 Remote control receiver
10 Remote control device
22 Front screen memory (first memory)
23 Back screen memory (second memory)
24 Refresh buffer
25 Drawing process acceptance buffer

Claims (4)

A tuner that receives a television broadcast signal, a decoder that separates and decodes video data and audio data from the received television broadcast signal, and converts the decoded video data and audio data into data that can be output by the monitor device and outputs the data A video / audio output unit, an OSD output unit that superimposes predetermined OSD (On Screen Display) data on the video data output by the video / audio output unit, and outputs the data to the monitor device. A remote control device and a main body operation unit for outputting a predetermined signal corresponding to the remote control unit, a remote control reception unit for receiving a signal from the remote control signal, a timer for counting time, a storage unit for storing a predetermined control program, and the predetermined unit A television receiver including a control unit that controls the entire apparatus according to the program of
The OSD output unit includes a first memory for storing OSD data to be superimposed on the video data output from the video / audio output unit, and a second memory for storing data to be output to the first memory The stored data is arranged in a place where it is not destroyed by the influence of line noise, and the OSD data input from the control unit is stored and output to the second memory, and the OSD data is stored in the first memory. And a refresh buffer for storing backup data for use when releasing / re-acquiring (refreshing) OSD data stored in the second memory and the second memory, and a location where the stored data is not destroyed by the influence of line noise A drawing process reception buffer for receiving and storing a drawing process command from the control unit;
After the OSD drawing process is performed, the control unit causes the timer to start counting when the OSD is cleared from the screen of the monitor device, and does not output a drawing request from the remote control device or the main body operation unit. When time elapses and no OSD is displayed on the screen, the OSD data stored in the first memory and the second memory is refreshed using the backup data stored in the refresh buffer. By
A television receiver configured to perform an operation by receiving a user's drawing request with priority, and to refresh OSD data when there is no drawing request. A tuner that receives a television broadcast signal, a decoder that separates and decodes video data and audio data from the received television broadcast signal, and converts the decoded video data and audio data into data that can be output by the monitor device and outputs the data A video / audio output unit, an OSD output unit that superimposes predetermined OSD (On Screen Display) data on the video data output by the video / audio output unit, and outputs the data to the monitor device. In a television receiver including an operation unit that outputs a predetermined signal in response, a storage unit that stores a predetermined control program, and a control unit that controls the entire apparatus according to the predetermined program,
The OSD output unit has a memory for storing OSD data to be superimposed on the video data output by the video / audio output unit,
When the OSD is cleared from the screen of the monitor device after the OSD drawing process, the control unit reads the backup data stored in the storage unit and stores it in the memory of the OSD output unit. A television receiver characterized in that OSD data is refreshed by releasing / re-acquiring OSD data. A timer for counting time;
After the OSD drawing process is performed, the control unit causes the timer to start counting when the OSD is cleared from the screen of the monitor device, and a predetermined time elapses without a drawing request being output from the operation unit. When the OSD is not displayed on the screen, by refreshing the OSD data stored in the memory,
3. The television receiver according to claim 2, wherein the television receiver is configured to refresh the OSD data when there is no drawing request while operating by receiving a user's drawing request with priority. The OSD output unit stores the OSD data input from the control unit, outputs the OSD data to the memory, and releases / re-acquires (refreshes) the OSD data stored in the memory. Has a refresh buffer to store as backup data for occasional use
4. The television receiver according to claim 3, wherein the refresh buffer is arranged at a place where stored data is not destroyed by the influence of line noise.

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