Television system and signal processing method thereof
阅读说明:本技术 电视系统及其信号处理方法 (Television system and signal processing method thereof ) 是由 卢甫旻 李昭辉 罗志昇 于 2018-06-22 设计创作,主要内容包括:本发明提供一种电视系统,其中包含一选择电路、一信号处理电路、一控制电路与一设定电路。该选择电路根据一播放指令自多个影音信号中选择并输出一输入影音信号。该信号处理电路根据一效果设定值对输入影音信号施以信号处理程序,以产生供播放的一处理后影音信号。该设定电路包含用以暂存该效果设定值的一缓存器,并将该效果设定值提供给该信号处理电路。该控制电路包含一查找表。响应于一储存需求,该控制电路自该设定电路取得该缓存器所储存的该效果设定值并存入该查找表,做为与目前的该输入影音信号相对应的一期望播放效果。(The invention provides a television system, which comprises a selection circuit, a signal processing circuit, a control circuit and a setting circuit. The selection circuit selects and outputs an input video signal from a plurality of video signals according to a play instruction. The signal processing circuit applies a signal processing program to the input video signal according to an effect set value to generate a processed video signal for playing. The setting circuit comprises a register for temporarily storing the effect setting value and provides the effect setting value to the signal processing circuit. The control circuit includes a look-up table. In response to a storage requirement, the control circuit obtains the effect setting value stored in the register from the setting circuit and stores the effect setting value into the lookup table as a desired playing effect corresponding to the current input video signal.)
1. A television system, comprising:
a selection circuit for selecting and outputting an input video signal from the plurality of video signals according to a play instruction;
a signal processing circuit, which is used for applying a signal processing program to the input video signal according to an effect set value so as to generate a processed video signal for playing;
a setting circuit for the signal processing circuit to access, which comprises a buffer for temporarily storing the effect setting value; and
a control circuit, which contains a lookup table, responding to a storage demand, obtaining the effect setting value stored in the register from the setting circuit and storing the result setting value into the lookup table as a desired playing effect corresponding to the current input video signal.
2. The television system of claim 1, wherein in response to a search request, the control circuit searches the lookup table for the expected playback effect corresponding to the input video/audio signal; the setting circuit updates the effect setting value in the register according to the expected playing effect when the control circuit provides the expected playing effect.
3. The television system of claim 2, further comprising:
an instruction interpretation circuit is used for interpreting a control signal triggered by a user and responding to the playing instruction, the storage requirement or the searching requirement.
4. The TV system as claimed in claim 3, wherein the control circuit is configured to automatically trigger the search request when the selection circuit is about to change the input AV signal via the play command.
5. The television system of claim 3, further comprising:
an inquiry circuit, which is used to send a message playing request when the playing instruction indicates that the selection circuit changes the input video signal, and ask the signal processing circuit to present a message window through the processed video signal, and ask the user whether to search the expected playing effect for the input video signal to be played; when the control signal is interpreted as that the user agrees to search the expected playing effect, the instruction interpretation circuit generates and sends the search requirement to the control circuit.
6. The television system of claim 3, further comprising:
an inquiry circuit, which is used to send a message playing request when the playing instruction indicates that the selection circuit changes the input video signal, and ask the signal processing circuit to present a message window through the processed video signal, and ask the user whether to store the effect setting value for the input video signal to be stopped playing;
when the control signal is interpreted that the user agrees to store the effect setting value, the instruction interpretation circuit generates and sends the storage requirement to the control circuit.
7. The television system of claim 1, wherein the control circuit automatically triggers the storage request when the playback command indicates that the selection circuit is about to change the input video signal.
8. The television system of claim 1, wherein the effect settings comprise one or more of the following play effects: picture mode, image resolution, image contrast, image chroma, image brightness, image color temperature, noise suppression, volume, sound effect.
9. The television system of claim 1, wherein one of the plurality of audiovisual signals corresponds to a multimedia file stored in an external storage device, and the control circuit stores a device identifier of the external storage device and a file name of the multimedia file in the look-up table as identification information of the multimedia file.
10. The television system of claim 1, wherein one of the plurality of audiovisual signals corresponds to a television program, and the control circuit stores a channel identifier and a program name of the television program in the look-up table as an identification of the television program.
11. The television system of claim 1, wherein the setup circuit generates and sends the storage request to the control circuit in response to a play effect setup command for adjusting the effect setup value.
12. A signal processing method for a television system, comprising:
(a) applying a signal processing program to an input video signal according to an effect set value to generate a processed video signal for playing; and
(b) if a storage demand is generated, the currently adopted effect setting value is stored into a lookup table in response to the storage demand and is used as a desired playing effect corresponding to the input video-audio signal.
13. The signal processing method of claim 12, comprising:
(c) if a search requirement is generated, responding to the search requirement, and searching whether the expected playing effect corresponding to the input video and audio signal exists in the search table; and
and updating the effect setting value according to the expected playing effect.
14. The signal processing method of claim 13, further comprising:
interpreting a control signal triggered by a user and responding to the storage requirement, the searching requirement or the playing instruction.
15. The signal processing method of claim 14, further comprising:
when the playing instruction is known that the input video signal will change, the search requirement is automatically triggered.
16. The signal processing method of claim 14, further comprising:
when the playing instruction indicates that the input video-audio signal is about to change, a message window is presented to inquire whether a user stores the effect set value aiming at the input video-audio signal to be stopped to play;
wherein the control signal is interpreted as the storage request generated when the user agrees to store the effect setting value.
17. The signal processing method of claim 14, further comprising:
when the playing instruction indicates that the input audio-video signal changes, a message window is presented to inquire whether a user needs to search the expected playing effect aiming at the input audio-video signal to be played;
wherein, the control signal is interpreted as the searching requirement generated when the user agrees to search the expected playing effect.
18. The signal processing method of claim 12, further comprising:
the storage requirement is automatically triggered when the input video signal is to be changed.
19. The signal processing method of claim 12, further comprising:
the storage requirement is generated whenever a play effect setting instruction for adjusting the effect setting value is received.
20. The signal processing method of claim 12, wherein the effect setting value comprises one or more of the following playback effects: picture mode, image resolution, image contrast, image chroma, image brightness, image color temperature, noise suppression, volume, sound effect.
Technical Field
The present invention relates to television systems, and more particularly to playback effect control techniques in television systems.
Background
Television systems are important devices that are essential in most homes. In recent years, many tv systems are on the market that can not only play programs provided by tv providers, but also connect to internet or external storage devices to play multimedia files provided by these sources. The video and audio signals with different content properties have proper playing effects respectively. For example, the playing effect is that a scene which is rapidly changed in a sports program is suitable for being played in a smooth picture mode, and is suitable for being matched with larger volume and multi-channel sound effect to create a realistic sensation; the travel program with the theme of introducing natural scenery is suitable for being played in a fine picture mode, and usually does not need too much volume and special sound effect. Various audiovisual signals provided to a television system may have a predetermined playback effect. In the current television system, for example, if a certain television program is selected for viewing, the playing effect is not preferred by the user, and the setting needs to be manually modified through a remote controller or a control panel.
Fig. 1 shows a functional block diagram of a conventional television system. The
In the current tv system, when the user changes the input video signal through the playing command, the
Disclosure of Invention
In order to solve the above problems, the present invention provides a new television system and a signal processing method thereof.
An embodiment of a television system according to the invention comprises a selection circuit, a signal processing circuit, a control circuit, and a setting circuit. The selection circuit is used for selecting and outputting an input video signal from a plurality of video signals according to a play instruction. The signal processing circuit is used for applying a signal processing program to the input video signal according to an effect set value so as to generate a processed video signal for playing. The setting circuit is used for the signal processing circuit to access, and comprises a register for temporarily storing the effect setting value. In response to a storage requirement, the control circuit obtains the effect setting value stored in the register from the setting circuit and stores the effect setting value into a lookup table as a desired playing effect corresponding to the input video signal.
Another embodiment according to the present invention is a signal processing method for use in a television system. The signal processing method comprises the following steps: (a) applying a signal processing program to an input video signal according to an effect set value to generate a processed video signal for playing; and (b) in response to a storage request, storing the currently adopted effect setting value into a lookup table as a desired playing effect corresponding to the input video signal.
The advantages and spirit of the present invention can be further understood by the following detailed description of the invention and the accompanying drawings.
Drawings
Fig. 1 shows a functional block diagram of a conventional television system.
Fig. 2 is a functional block diagram of a television system according to an embodiment of the present invention.
It is noted that the drawings include functional block diagrams that represent various functional blocks that can be associated with one another. The drawings are not detailed circuit diagrams, and the connecting lines are merely used to represent signal flows. The various interactions between functional elements and/or processes need not be achieved through direct electrical connections. Moreover, the functions of the individual elements need not be distributed as shown in the drawings, and the distributed blocks need not be implemented by distributed electronic elements.
Description of the symbols
105. 205: instruction interpretation circuit
110. 210: selection circuit
120. 220, and (2) a step of: setting circuit
120A, 220A: buffer memory
130. 230: signal processing circuit
140. 240: video and audio playing device
250: control circuit
250A: lookup table
260: interrogation circuit
Detailed Description
An embodiment of a television system according to the present invention is a functional block diagram shown in fig. 2. The
The
The playback effect setting command generated by the
The
The
The
The lookup table 250A is designed to store a plurality of different sets of audiovisual signals and their desired playback effects. For the multimedia files stored in the external storage device, the
When a search request occurs, the
One embodiment of the storage requirement generated by the
In another embodiment, each time the
An embodiment of the storage requirement triggered by the
One embodiment of generating the storage requirement b by the
One embodiment of the
In another embodiment, each time the
When the search request is generated after the
One embodiment of the
In another embodiment, if the
Unlike the
In practice, the
Another embodiment according to the present invention is a signal processing method for use in a television system. The signal processing method comprises the following steps: (a) applying a signal processing program to an input video signal according to an effect set value to generate a processed video signal for playing; and (b) if a storage requirement is generated, responding to the storage requirement, storing the currently adopted effect setting value into a lookup table as a desired playing effect corresponding to the input video-audio signal. It will be understood by those skilled in the art that various operational variations described previously in the description of the
The above detailed description of the embodiments is intended to more clearly describe the features and spirit of the present invention, and is not intended to limit the scope of the present invention by the embodiments disclosed above. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the scope of the claims appended hereto.
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