CN102984579A - Realizing method for key sound effect of set-top box and set-top box - Google Patents
Realizing method for key sound effect of set-top box and set-top box Download PDFInfo
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- CN102984579A CN102984579A CN201210535662XA CN201210535662A CN102984579A CN 102984579 A CN102984579 A CN 102984579A CN 201210535662X A CN201210535662X A CN 201210535662XA CN 201210535662 A CN201210535662 A CN 201210535662A CN 102984579 A CN102984579 A CN 102984579A
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Abstract
The invention discloses a realizing method for a key sound effect of a set-top box and the set-top box. A key audio file is stored in an internal memory of the set-top box; when the set-top box receives a remote control command or a local key command, a decoder controlling audio and video of the set-top box shuts down output of a program audio signal; the key audio file is taken out and decoded; and an audio player arranged on the set-top box is started to play key prompt tone. The set-top box can respond timely to a user of the set-top box or debugging personnel by playing the key prompt tone when receiving the control command, so that the operation experience of the user of the set-top box is improved, the debugging personnel of the set-top box are not required to connect a television with the set-top box when detecting a remote control receiving part or a key receiving part of the set-top box, the test operation is simplified, the power consumption is reduced, and energy sources are saved.
Description
Technical field
The invention belongs to the TV signal receiving apparatus technical field, specifically, relate to a kind of method for designing of keypad tone playing function and top box of digital machine that adopts the method design in the set-top box product, realized.
Background technology
For existing top box of digital machine product, its control mode is nothing more than two kinds: a kind of is the remote controller control mode; A kind of is the key controlled mode of the machine.No matter which kind of control mode is set-top box adopted, all can only pass through the external tv machine, the mode that shows with menu by television set or the mode that directly responds corresponding operating (as changing channel, volume plus-minus or cursor movement etc.) judge whether set-top box has received user instruction.
This traditional response mode of controlling, intuitive is relatively poor, and the command reception of set-top box is partly being carried out in the process of functional test, must the external tv machine and control television set and start operation, the response screen by the observation television machine just can judge.So not only increase the complexity of set top box testing process, and cooperated the test assignment of finishing set-top box owing to need to open television set, therefore also increased to a certain extent power consumption, caused energy waste.
Summary of the invention
The object of the present invention is to provide a kind of button audio implementation method of set-top box, by in set-top box, increasing the keypad tone playing function, thereby realized that set-top box to controlling the timely feedback of command reception, improved user's experience, made things convenient for the test process of set-top box product.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of button audio implementation method of set-top box is preserved the keypad tone frequency file in the internal storage of set-top box; Set-top box is when receiving remote control command or the machine key command, audio/video decoder in the controller top box is closed the output of program audio signal, read the keypad tone frequency file, and to described keypad tone frequency file decode process after, start the audio player plays key prompting voice that is arranged on the set-top box.
In order to simplify the processing procedure of system, realize the quick switching of audio stream, preferably the control function with described audio/video decoder is packaged into independently audio frequency play function and video playback function, can not adjust for the video playback function, in the audio frequency play function, the inlet flow that the audio frequency broadcast is set switches between program audio signal and keypad tone frequency file according to the reception condition of remote control command and the machine key command.
For fear of the situation that program sound accompaniment and key prompting voice occur and export simultaneously, it is the audio mixing problem, described set-top box is after receiving remote control command or the machine key command, it is quiet at first to control audio player, then control audio/video decoder and close the output of program audio signal, the inlet flow of again audio frequency being play afterwards switches to the keypad tone frequency file, the output key prompt tone.
Further, described set-top box starts the timer timing after receiving remote control command or the machine key command, control audio player loop play key prompting voice; If before timing time arrived setting-up time, set-top box received remote control command or the machine key command again, then control the timer zero clearing and restart timing, continue the loop play key prompting voice; If timing time arrives setting-up time, then the audio frequency of audio/video decoder is play inlet flow and switch back the program audio signal.Adopt the design of loop play key prompting voice, can under the prerequisite that guarantees the button audio, reduce as much as possible the size of keypad tone frequency file, the capacity of conserve memory.
In order to accelerate the speed of transferring of keypad tone frequency file, described set-top box is at first called in internal memory with described keypad tone frequency file after starting operation, forms keypad tone frequency group or forms the pointer that points to keypad tone frequency file memory location; Start the processing threads that remote control reception and button receive.
Preferably, described keypad tone frequency file preferably is stored in the FLASH memory that is used for the saved system program in the set-top box, and the size of keypad tone frequency file is preferably designed for the integral multiple of 32K byte, with the characteristics of the Physical Extents block that takes into full account the FLASH memory.
Based on above-mentioned button audio implementation method, the present invention also provides a kind of set-top box that adopts this button audio implementation method design, comprising:
Memory is preserved the keypad tone frequency file;
Audio/video decoder is processed audio signal and decoding video signal, generates simulated audio signal and analog video signal;
Audio player receives the simulated audio signal that the audio/video decoder decoding is exported, broadcast program sound accompaniment or key prompting voice;
Processor, receive respectively remote control command and the machine key command by remote-control receiving circuit and key circuit, when receiving remote control command or the machine key command, control described audio/video decoder and close the output of program audio signal, read the keypad tone frequency file and decode process after, start the audio player plays key prompting voice.
Further, described processor is called in internal memory with described keypad tone frequency file after system starts operation, forms keypad tone frequency group or forms the pointer that points to keypad tone frequency file memory location; Start the processing threads that remote control reception and button receive.
Further, described processor is after receiving remote control command or the machine key command, it is quiet at first to control audio player, then control audio/video decoder and close the output of program audio signal, the audio frequency of audio/video decoder is play inlet flow switch to the keypad tone frequency file, by audio/video decoder to the keypad tone frequency file decode process after, drive the audio player plays key prompting voice.
Further, described processor starts the timer timing after receiving remote control command or the machine key command, control audio player loop play key prompting voice; If before timing time arrived setting-up time, processor received remote control command or the machine key command again, then control the timer zero clearing and restart timing, continue the loop play key prompting voice; If timing time arrives setting-up time, then the audio frequency of audio/video decoder to be play inlet flow and switch to the program audio signal, the control audio player recovers the broadcast output of program sound accompaniment.
Compared with prior art, advantage of the present invention and good effect are: the present invention is by increasing the button sound effect function in the remote control command reception ﹠ disposal process of set-top box and in the reception ﹠ disposal process of key command, so that set-top box is receiving when controlling instruction and can make in time response to set-top box users or commissioning staff with the form of playing key prompting voice, not only improved thus the operating experience of set-top box users, and for the commissioning staff of set-top box product, when the remote control reception of set-top box part or button receiving unit are detected, need not to use the television set external connection set-top box, can finish test assignment, when simplifying test operation, reduce power consumption, saved the energy.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.Apparently, the accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic block circuit diagram of a kind of embodiment of the set-top box with button sound effect function proposed by the invention;
Fig. 2 is the program flow chart of a kind of embodiment of set-top box keys audio implementation method proposed by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment only is a part of embodiment among the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtain under the creative work prerequisite.
For the advantage that makes technical solution of the present invention is clearer, below in conjunction with drawings and Examples the present invention is explained.
Embodiment one, present embodiment is in order to realize the button sound effect function of set-top box product, one side is write the keypad tone frequency file and is kept in the memory of set-top box inside, built-in audio player in the set-top box product on the other hand is by the audio/video decoder of audio frequency power amplifier passage junctor top box inside.Set-top box is when receiving remote control command or the machine key command, at first the audio/video decoder in the controller top box is closed the output of program audio signal, then transfer out the keypad tone frequency file, and by audio/video decoder to described keypad tone frequency file decode process after, output simulated audio signal via the audio frequency power amplifier channel transfer to audio player, and then driving audio player plays output key prompt tone, thus so that the set-top box product receiving when controlling instruction, can make feedback with the form of playing key prompting voice immediately, thereby the user who has improved the set-top box product experiences.
The basic hardware that following paper has the top box of digital machine of button sound effect function once forms structure and operation principle thereof.
Referring to shown in Figure 1, in the top box of digital machine of present embodiment, be provided with the chief component parts such as remote-control receiving circuit, key circuit, tuned cell, processor, audio/video decoder, memory and audio player.Wherein, processor also can be integrated in the audio/video decoder, namely adopts the audio/video decoding chip that is integrated with CPU to carry out the system of set-top box circuit, and present embodiment does not specifically limit this.
In the top box of digital machine of present embodiment, remote-control receiving circuit is used for cooperating external remote controller, finishes reception and translation function to remote signal, can adopt the various ways such as infrared remote control mode or RF remote-controlled mode.Key circuit is used for the pressed state of each function button of laying on the set-top box keys plate is scanned, and generates electric signal transmission to processor, with collection and the parsing identification of finishing key command.
Tuned cell can adopt tuner to cooperate demodulation chip to design, by tuner received tv broadcast signal and fm broadcast signal, and after carrying out signal amplification and down-converted, export demodulation chip to and carry out the signal solution and be in harmonious proportion after channel-decoding processes, generate intermediate-freuqncy signal and be sent to audio/video decoder.
Described audio/video decoder is to the intermediate-freuqncy signal that the receives processing of decoding, generate simulated audio signal and analog video signal and transfer to external television set by the audio frequency and video lead-out terminal that arranges on the set-top box, by television for play TV programme or FM broadcasting.
When only needing playing audio signal, the audio signal by audio/video decoder decoding output directly can be transferred to the audio player on the set-top box, can listen to program sound accompaniment or FM broadcasting thereby need not to start television set.
In the top box of digital machine of present embodiment, be provided with the memory that a plurality of and described processor is connected, for example: the nonvolatile memory that is used for storage keypad tone frequency file; The internal memory etc. that is used for the memory of storage system program and is used for the storage ephemeral data.Wherein, the keypad tone frequency file can directly be stored in the FLASH memory for the storage system program, such as Norflash or Nandflash etc.Characteristics (capacity of a block is the 32K byte) according to the Physical Extents block of Norflash and Nandflash, the size of described keypad tone frequency file is preferably adjusted with the integral multiple of 32K byte, if adopt Norflash to design according to 32K or 64K byte, if adopt Nandflash to design according to the 128K byte, to take full advantage of the capacity of FLASH memory.
When design keypad tone frequency file big or small, the set-top box for adopting Embedded System Design will guarantee to increase this function and can not increase software to the requirement of set-top box amount of physical memory, so the keypad tone frequency file preferably is controlled in the 128K byte.
Certainly, described keypad tone frequency file and system program also can be stored in the storage medium of other types or separately be stored in the different storage mediums, present embodiment be not limited in above for example.
Described processor receives respectively remote control command and the machine key command by remote-control receiving circuit and key circuit, when receiving remote control command or the machine key command, the control audio/video decoder is closed the output of program audio signal, extract the keypad tone frequency file and decode process after, start the audio player plays key prompting voice.
In order to realize that audio stream switches at short notice fast, on the one hand, after system starts operation, at first described keypad tone frequency file is called in internal memory, form keypad tone frequency group or form the pointer that points to keypad tone frequency file memory location, to accelerate the extraction rate of keypad tone frequency file; On the other hand, need to carry out flexible Application to the audio frequency play function in the audio/video decoder, namely, the audio/video decoder control function of system is packaged into independently audio frequency play function and video playback function, can not adjust for video playback, but the inlet flow of playing for audio frequency should switch between program audio signal and keypad tone frequency file according to the reception condition of remote control command and the machine key command.That is to say, system is when playing TV programme sound accompaniment or FM broadcasting, in case the remote control command of receiving or the machine key command, then need the inlet flow that audio frequency is play is promptly switched to the keypad tone frequency file from current program audio signal,, and drive audio player and play in time key prompting voice the processing of decoding of keypad tone frequency file by audio/video decoder.After key prompting voice finished, if without new remote control command or key command access, the inlet flow of then immediately audio frequency being play switched to current program audio signal again, realizes interrupting the Recovery processing of program audio stream.
For fear of the situation that program sound accompaniment and button prompting mixture of tones broadcast occurs, described processor is after receiving remote control command or the machine key command, it is quiet at first to control audio player, and then the control audio/video decoder is closed the output of program audio signal, the audio frequency of audio/video decoder is play inlet flow switch to the keypad tone frequency file, realize the independent play-out to key prompting voice.
Certainly, above-mentioned button audio implementation method equally also can be applied in the television product, to finish the prompt facility to the key command reception of such digital TV products.
Below in conjunction with Fig. 2, the specific design flow process of described button audio implementation method is at length set forth.
S201, system start operation, completion system initialization.
S202, system run application, and transfer the keypad tone frequency file of pre-save in the memory, and the writing system internal memory, form keypad tone frequency file array or form the pointer that points to keypad tone frequency file memory location;
In the present embodiment, it is the audio effect file of 44.1KHz coded format that described keypad tone frequency file preferably adopts audio frequency, is kept in the FLASH memory, calls when controlling instruction receiving for system.
Be that the coded format of 44.1KHz is write with described keypad tone frequency file according to audio frequency why, because in set-top box, the program audio signal stream of the routine of audio/video decoder reception and the processing of decoding is exactly the coded format of 44.1KHz, the audio frequency that the keypad tone frequency file is set is identical with the audio frequency of conventional program audio stream, can avoid audio/video decoder when above-mentioned two kinds of audio signals being decoded processing, the situation that must adjust its codec format occurs, can simplify decode procedure thus, reduce the transient effect that function is switched.
The processing threads that S203, startup remote control reception and button receive.
Whether S204, in real time detection have remote control command or key command access; If the remote control command of detecting or key command are then carried out subsequent step, namely carry out audio and respond little thread; Otherwise, repeat the detection of controlling instruction and the deterministic process of this step.
S205, control audio player are quiet, close the output of program audio signal;
In the present embodiment, the control audio player is quiet preferably from two aspects: the first is called the software mute function, the audio signal output of blocking-up audio/video decoder; It two is to start the hardware mute function, and the control audio power amplifier circuit is quiet.Fully utilize two kinds of quiet means to guarantee reliable muting function.
S206, the inlet flow that the audio frequency of audio/video decoder is play switch to the keypad tone frequency file, start the audio player plays key prompting voice, and create the timer of loop play key prompting voice;
In this step, the inlet flow successful switch of playing when audio frequency is during to the keypad tone frequency file, close mute function, by audio/video decoder read the keypad tone frequency file of write memory and decode process after, to generate simulated audio signal, after exporting audio power amplifier circuit to and carrying out power amplification and process, drive the audio player plays key prompting voice.
Because the keypad tone frequency file is very little, the audio file that generally only is designed to send " ticking " sound gets final product.In order to strengthen the prompting effect, preferably create the loop play 2-3 timer of second.Namely setting timing time is that 2-3 (can certainly set other durations for second, setting as required concrete numerical value gets final product), at 2-3 loop play key prompting voice in the time of second, if again receive remote control command or key command during this period, then the timer zero clearing restarts timing, and continues the current key prompting voice of loop play; If timing time arrives, then carry out subsequent step.
S207, stop to play key prompting voice, the audio frequency of audio/video decoder is play inlet flow switches back original program audio signal, the processing procedure of recovery program audio signal.
S208, return step S204, continue remote control command and key command are detected.
Present embodiment has not only improved the experience of controlling of set-top box users by increase the keypad tone playing function in the processing procedure of remote control command and key command, has made things convenient for simultaneously set-top box research staff's test job.
Certainly; above-mentioned explanation is not to be limitation of the present invention; the present invention also is not limited in above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (10)
1. the button audio implementation method of a set-top box is characterized in that: preserve the keypad tone frequency file in the internal storage of set-top box; Set-top box is when receiving remote control command or the machine key command, audio/video decoder in the controller top box is closed the output of program audio signal, read the keypad tone frequency file, and to described keypad tone frequency file decode process after, start the audio player plays key prompting voice that is arranged on the set-top box.
2. the button audio implementation method of set-top box according to claim 1, it is characterized in that: the control function of described audio/video decoder is packaged into independently audio frequency play function and video playback function, in the audio frequency play function, the inlet flow that the audio frequency broadcast is set switches between program audio signal and keypad tone frequency file according to the reception condition of remote control command and the machine key command.
3. the button audio implementation method of set-top box according to claim 2, it is characterized in that: described set-top box is after receiving remote control command or the machine key command, it is quiet at first to control audio player, then control audio/video decoder and close the output of program audio signal, the inlet flow that audio frequency is play switches to the keypad tone frequency file.
4. the button audio implementation method of each described set-top box in 3 according to claim 1, it is characterized in that: described set-top box is after receiving remote control command or the machine key command, start the timer timing, control audio player loop play key prompting voice; If before timing time arrived setting-up time, set-top box received remote control command or the machine key command again, then control the timer zero clearing and restart timing, continue the loop play key prompting voice; If timing time arrives setting-up time, then the audio frequency of audio/video decoder is play inlet flow and switch back the program audio signal.
5. the button audio implementation method of each described set-top box in 3 according to claim 1, it is characterized in that: described set-top box is after starting operation, at first described keypad tone frequency file is called in internal memory, form keypad tone frequency group or form the pointer that points to keypad tone frequency file memory location; Then start the processing threads that remote control reception and button receive.
6. the button audio implementation method of set-top box according to claim 5 is characterized in that: described keypad tone frequency file is stored in the FLASH memory that is used for the saved system program in the set-top box, and the size of keypad tone frequency file is the integral multiple of 32K byte.
7. a set-top box is characterized in that: comprise
Memory is preserved the keypad tone frequency file;
Audio/video decoder is processed audio signal and decoding video signal, generates simulated audio signal and analog video signal;
Audio player receives the simulated audio signal that the audio/video decoder decoding is exported, broadcast program sound accompaniment or key prompting voice;
Processor, receive respectively remote control command and the machine key command by remote-control receiving circuit and key circuit, when receiving remote control command or the machine key command, control described audio/video decoder and close the output of program audio signal, read the keypad tone frequency file and decode process after, start the audio player plays key prompting voice.
8. set-top box according to claim 7 is characterized in that: described processor is called in internal memory with described keypad tone frequency file after system starts operation, forms keypad tone frequency group or forms the pointer that points to keypad tone frequency file memory location; Then audio/video decoder is carried out corresponding control.
9. set-top box according to claim 7, it is characterized in that: described processor is after receiving remote control command or the machine key command, it is quiet at first to control audio player, then control audio/video decoder and close the output of program audio signal, the audio frequency of audio/video decoder is play inlet flow switch to the keypad tone frequency file.
10. each described set-top box in 9 according to claim 7, it is characterized in that: described processor starts the timer timing after receiving remote control command or the machine key command, control audio player loop play key prompting voice; If before timing time arrived setting-up time, processor received remote control command or the machine key command again, then control the timer zero clearing and restart timing, continue the loop play key prompting voice; If timing time arrives setting-up time, then the audio frequency of audio/video decoder to be play inlet flow and switch back the program audio signal, the control audio player recovers the broadcast output of program sound accompaniment.
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