CN113329248A - Digital television set-top box supporting multiple tuning modes and method for automatically adapting to multiple tuning modes - Google Patents
Digital television set-top box supporting multiple tuning modes and method for automatically adapting to multiple tuning modes Download PDFInfo
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- CN113329248A CN113329248A CN202110528078.0A CN202110528078A CN113329248A CN 113329248 A CN113329248 A CN 113329248A CN 202110528078 A CN202110528078 A CN 202110528078A CN 113329248 A CN113329248 A CN 113329248A
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- 230000001360 synchronised effect Effects 0.000 claims description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The invention discloses a digital television set-top box supporting various tuning modes and a method for automatically adapting to the various tuning modes, wherein the digital television set-top box supporting various tuning modes comprises the following steps: the set-top box comprises a set-top box mainboard and a signal processing front end, wherein the set-top box mainboard is provided with a plurality of universal I2C interfaces and TS input interfaces, each TS input interface and the corresponding I2C interface correspond to one signal processing front end, and the plurality of TS input interfaces can simultaneously support a plurality of signal processing front ends. The invention has the advantages that: the digital television set-top box provided by the invention can support various tuning modes without changing Frontend or software because each TS input interface and the corresponding I2C interface correspond to one signal processing front end and the multi-TS input interfaces can simultaneously support a plurality of signal processing front ends by arranging the multi-channel universal I2C interface and the TS input interface on the set-top box mainboard and modularizing the signal processing front ends.
Description
Technical Field
The invention relates to a digital television set top box and a tuning mode adapting method thereof, in particular to a digital television set top box supporting multiple tuning modes and a method for automatically adapting the multiple tuning modes thereof, belonging to the technical field of digital television set top boxes.
Background
The demand of high definition television users for ease of use of high definition television and multimedia content has led to the widespread use of high definition television set-top boxes with multiple tuners in everyday homes.
In a conventional digital tv set-top box, a tuning module (Tuner) is responsible for tuning a digital tv signal, and a demodulation module (Demodulator) is responsible for demodulating the signal, which together form a signal processing front end (Frontend). Tuner and Demodulator work cooperatively, and after being processed by front, the signal can become a multiplexed Transport Stream (TS Stream).
In a traditional digital television set-top box, a set-top box main board (hereinafter referred to as a main board) and a front are highly coupled, some set-top boxes even directly use a built-in Demodulator, and at this time, the main board and the front can only be in a one-to-one relationship. In addition, Frontend and software are in one-to-one correspondence, and Frontend of different models needs to be adapted to different software. In addition, the traditional digital television set top box generally supports fronted only in a single way, and the traditional digital television set top box cannot simultaneously support multiple fronted types, such as DVB-C, DVB-C2, DVB-S, DVB-S2, DVB-T, DVB-T2, DTMB and ISDB-T.
That is, a hardware solution can only support a specific type of Frontend, if frontends of other types need to be used, another motherboard with a corresponding Frontend must be replaced, and corresponding software must be replaced, otherwise, it is impossible to adapt frontends of various hardware using a general software.
In summary, if a conventional digital tv set-top box supports a hardware platform with multiple frontends, the Frontend needs to be replaced and another software needs to be replaced, which is time-consuming and cost-increasing.
Disclosure of Invention
To solve the problems of the prior art, a first object of the present invention is to provide a digital tv set-top box capable of supporting multiple tuning modes without replacing fronted and software, and a second object of the present invention is to provide a method for automatically adapting multiple tuning modes for the digital tv set-top box supporting multiple tuning modes.
In order to achieve the first object, the invention adopts the following technical scheme:
a digital television set-top box supporting multiple tuning modes, comprising: the set-top box comprises a set-top box mainboard and a signal processing front end, wherein the signal processing front end consists of a tuning module and a demodulation module, and the set-top box mainboard is characterized by being provided with a plurality of paths of universal I2C interfaces and TS input interfaces, each path of TS input interface and the corresponding I2C interface correspond to one signal processing front end, and the plurality of paths of TS input interfaces can simultaneously support a plurality of signal processing front ends.
The digital television set-top box supporting multiple tuning modes is characterized in that the demodulation module of the signal processing front end is provided with a plurality of TS output interfaces, and the TS output interfaces comprise: the DATA signal output interface TS _ DATA, the clock signal output interface TS _ CLK, the DATA valid signal output interface TS _ VLD, the synchronous head signal output interface TS _ SYNC and the packet error signal output interface TS _ ERR.
In order to achieve the second objective, the invention adopts the following technical scheme:
the method for automatically adapting to multiple tuning modes of the digital television set top box supporting multiple tuning modes is characterized by comprising the following steps of:
step 1: the digital television set top box is started, and the software automatically identifies the combined model of the tuning module and the demodulation module at the front end of the signal processing;
step 2: and the upper layer application provides a corresponding search menu interface according to the identified combination model of the tuning module and the demodulation module, and selects a corresponding TS input interface to transmit the TS stream to the demultiplexer.
The method is characterized in that in Step1, the method for automatically identifying the combination model of the tuning module and the demodulation module of the signal processing front end by software comprises the following steps:
acquiring chip IDs of a tuning module and a demodulation module, wherein each of the tuning module and the demodulation module has a fixed chip ID;
or, the initialization of the tuning module and the demodulation module can be successful, that is, the corresponding signal processing front end is accessed.
The method is characterized in that the combination model of the tuning module and the demodulation module which are successfully initialized after the first startup is recorded in a configuration file of the signal processing front end, and only the tuning module and the demodulation module in the file are initialized after each startup.
The invention has the advantages that: the digital television set-top box provided by the invention can support various tuning modes, really realizes a one-to-many function, and does not need to replace Frontend nor software because each TS input interface and the corresponding I2C interface correspond to one signal processing front end and the multipath TS input interfaces can simultaneously support a plurality of signal processing front ends.
Drawings
FIG. 1 is a schematic diagram of the digital TV set-top box supporting multiple tuning modes according to the present invention;
fig. 2 is a flow chart for identifying the combined model of the tuning module and the demodulation module of the signal processing front end.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
A first part: structure of digital television set-top box supporting multiple tuning modes
In this section, we only describe the hardware part of the digital tv set-top box, i.e. only the structure of the set-top box motherboard and the structure of the signal processing front end (Frontend).
1. Set-top box mainboard
Referring to fig. 1, in the digital tv set-top box supporting multiple tuning modes of the present invention, the set-top box motherboard has multiple (n) paths of general I2C interfaces and TS input interfaces, which are respectively denoted as: each of the I2C interface 1, the TS input interface 1, the I2C interface 2, the TS input interface 2, … …, the I2C interface n, and the TS input interface n corresponds to one signal processing front end (i.e., Frontend1) for the TS input interface (e.g., TS input interface 1) and the corresponding I2C interface (i.e., I2C interface 1).
2. Signal processing front end
The signal processing front end (fronted) consists of a tuning module (Tuner) and a demodulation module (Demodulator).
The tuning module (Tuner) has an SDA interface and an SCL interface, which interface interfaces with the demodulation module (Demodulator).
The demodulation module (Demodulator) also has an SDA interface and an SCL interface, which interface with the I2C interface of the set-top box motherboard.
In addition, the demodulation module (Demodulator) has a plurality of TS output interfaces, which include: the DATA signal output interface TS _ DATA, the clock signal output interface TS _ CLK, the DATA valid signal output interface TS _ VLD, the synchronous head signal output interface TS _ SYNC and the packet error signal output interface TS _ ERR. And the TS output interfaces are in butt joint with the TS input interface of the set top box mainboard.
A second part: the method for automatically adapting to multiple tuning modes of the digital television set-top box supporting multiple tuning modes
The method for automatically adapting to multiple tuning modes of the digital television set top box specifically comprises the following two steps:
step 1: identifying combined model of tuning module and demodulation module of signal processing front end
When the digital television set top box is started, the software automatically identifies the combined model of the tuning module and the demodulation module of the signal processing front end (namely, the combination of the model of the tuning module and the model of the demodulation module in a certain signal processing front end).
There are two methods for software to automatically identify the combination model of the tuning module and the demodulation module at the front end of the signal processing, which are respectively:
(1) acquiring chip IDs of the tuning module and the demodulation module, wherein generally, each tuning module and each demodulation module have fixed chip IDs and can be acquired by reading a register through an I2C interface;
(2) the initialization tuning module and the demodulation module can be initialized successfully, namely, the corresponding signal processing front end is accessed.
For the method (1), before the tuning module and the demodulation module operate, initialization setting must be performed. Therefore, a chip list is established in advance, and the chip list contains all the front-end members (i.e. front members) of the signal processing that need to be supported, such as the following four front members (type of demodulation module + type of tuning module) in the chip list:
1)E_DEMOD_TYPE_HISI3101I+E_TUNER_TYPE_TDA18250；
2)E_DEMOD_TYPE_MN88472+E_TUNER_TYPE_MXL603；
3)E_DEMOD_TYPE_EDT40607+E_TUNER_TYPE_EDT40607；
4)E_DEMOD_TYPE_HISI3136+E_TUNER_TYPE_AV2018。
the four fronted members are labeled fronted 1, fronted 2, fronted 3 and fronted 4 in sequence, and then a software program traverses the chip list in the starting process of the digital television set-top box, and before the loop, a fronted module reset operation is performed to prevent the last loop from influencing the operation. If the tuning module and the demodulation module both support the chip ID, it can be determined whether the current fronted member has been accessed by checking the chip ID, if the correct chip ID can be obtained, it indicates that the current fronted member has been accessed, for example, fronted 2 has been identified as an access state, then the model information of fronted 2 and the serial number (number) of fronted 2 in the chip list can be written into a configuration file (fronted configuration file), and then saved in Flash, and then operations such as subsequent initialization are performed; if the chip ID cannot be obtained, it indicates that the current fronted member has no access.
If the tuning module and the demodulation module do not support the chip ID, the combined model of the tuning module and the demodulation module can be identified by the method (2), that is, whether the current fronted member has been accessed is determined by whether the tuning module and the demodulation module can be initialized successfully, if the initialization operation is successful, the current fronted member is indicated to be accessed, the model information of the tuning module and the demodulation module is written into a configuration file (fronted configuration file) and then stored on Flash, and if the initialization operation is failed, the current fronted member is indicated to be not accessed.
The configuration file (fronted configuration file) is convenient for the next use, and at this time, the chip list does not need to be traversed again, and the related tuning module and the demodulation module are initialized directly by reading the configuration file, so that the starting speed of the digital television set top box is accelerated, and the starting time is reduced.
Referring to fig. 2, the method for automatically identifying the combination model of the tuning module and the demodulation module of the signal processing front end by software specifically comprises the following steps:
(1) starting a digital television set top box, and starting a software program;
(2) judging whether a Frontend configuration file exists or not, if not, traversing all chip lists to acquire a chip ID or trying to initialize a current Frontend member, writing the identified model information of the Frontend into the configuration file, and if so, traversing the Frontend configuration file to acquire the chip ID or trying to initialize the current Frontend member;
(3) the Frontend profile is checked by the execution result, if there is a match, the application layer is entered, Step2 is executed, and if there is no match, the Frontend profile is deleted and restarted.
Step 2: calling corresponding search menu interface and selecting corresponding TS input interface
And checking the fronted configuration file according to the execution result, if the fronted configuration file is matched with the tuner module, providing a corresponding search menu interface by the upper layer application according to the identified combination model of the tuner module and the demodulation module, and selecting a corresponding TS input interface to transmit TS flow to a demultiplexer so as to ensure that the functions of the digital set top box, such as channel searching, playing and the like, can be normally used.
Therefore, the multi-channel general I2C interface and the TS input interface are arranged on the main board of the set-top box, and the signal processing front end (Frontend) is modularized, and as each channel of TS input interface and the corresponding I2C interface correspond to one signal processing front end, and the multi-channel TS input interface can simultaneously support a plurality of signal processing front ends, the digital television set-top box provided by the invention can support a plurality of tuning modes, really realizes the one-to-many function, and does not need to replace Frontend and software.
It should be noted that the above-mentioned embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the protection scope of the present invention.
Claims (5)
1. A digital television set-top box supporting multiple tuning modes, comprising: the set-top box comprises a set-top box mainboard and a signal processing front end, wherein the signal processing front end consists of a tuning module and a demodulation module, and is characterized in that the set-top box mainboard is provided with a plurality of paths of universal I2C interfaces and TS input interfaces, each path of TS input interface and the corresponding I2C interface correspond to one signal processing front end, and the plurality of paths of TS input interfaces can simultaneously support a plurality of signal processing front ends.
2. The set-top box of claim 1, wherein the demodulation module of the signal processing front-end has a plurality of TS output interfaces, and the TS output interfaces comprise: the DATA signal output interface TS _ DATA, the clock signal output interface TS _ CLK, the DATA valid signal output interface TS _ VLD, the synchronous head signal output interface TS _ SYNC and the packet error signal output interface TS _ ERR.
3. The method for automatically adapting multiple tuning modes of a digital television set-top box supporting multiple tuning modes as claimed in claim 1 or 2, comprising the steps of:
step 1: the digital television set top box is started, and the software automatically identifies the combined model of the tuning module and the demodulation module at the front end of the signal processing;
step 2: and the upper layer application provides a corresponding search menu interface according to the identified combination model of the tuning module and the demodulation module, and selects a corresponding TS input interface to transmit the TS stream to the demultiplexer.
4. The method of claim 3, wherein in Step1, the method for automatically identifying the combination model of the tuning module and the demodulation module of the signal processing front end by the software is as follows:
acquiring chip IDs of a tuning module and a demodulation module, wherein each of the tuning module and the demodulation module has a fixed chip ID;
or, the initialization of the tuning module and the demodulation module can be successful, that is, the corresponding signal processing front end is accessed.
5. The method of claim 4, wherein the combination model of the tuning module and the demodulation module that is successfully initialized at the first power-on is recorded in a configuration file of the signal processing front end, and only the tuning module and the demodulation module in the file are initialized after each power-on later.
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| CN204334857U (en) * | 2015-02-02 | 2015-05-13 | 邢浩 | The digital TV set-top box of a kind of compatible with DVB-C, DTMB-TH transmission medium |
| CN108965953A (en) * | 2017-12-29 | 2018-12-07 | 深圳佳力拓科技有限公司 | It is a kind of to receive DVB-C and DTMB simple two-way signal set-top-box system and method simultaneously |
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2021
- 2021-05-14 CN CN202110528078.0A patent/CN113329248A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101616284A (en) * | 2008-06-25 | 2009-12-30 | 上海慧浦神望电子科技有限公司 | Multisystem digital television signal front end processing device and digital television broadcasting system |
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Application publication date: 20210831 |