TWI653865B - Multimedia signal processing device - Google Patents

Abstract

A multimedia signal processing device includes an encoding device, a signal shunt unit, a multi-standard modulation unit, and a signal output unit. The encoding device includes a processing unit having a plurality of cores. The processing unit receives a multimedia signal, encodes the multimedia signal to generate an encoded signal, and generates an instruction signal. The signal shunt unit receives the encoded signal and the instruction signal, and shunts the encoded signal according to the instruction signal to generate multiple shunt signals. The multi-mode modulation unit receives the shunt signal and performs multi-mode modulation on the shunt signal to generate multiple multi-mode modulation signals. The signal output unit receives the multi-mode modulation signal and mixes the multi-mode modulation signal to output a mixed carrier signal.

Description

Multimedia signal processing device

The invention relates to a processing device, in particular to a multimedia signal processing device.

Broadcasting systems are ubiquitous in life, and nowadays, with the development of the Internet, multimedia playback is a trend, and digital TV signals can be transmitted through the network in a wired or wireless manner. Generally, digital television signals are encoded by an encoding device, and then the encoded signals are broadcast to transmit the encoded signals to the digital television for playback.

However, the current encoding device is limited to a single channel, and can only modulate the encoded signal in a single format, which limits the convenience of use. In addition, if the digital TV used in the store or department store is a TV with a different system, it will be subject to regional or regional restrictions, so that some digital TVs will not work properly, which will cause inconvenience in use. Therefore, there is still room for improvement in the processing of multimedia signals.

In view of this, the present invention provides a multimedia signal processing device, so as to effectively perform normal playback and display on digital televisions of different standards without being restricted by regions or regions, in order to increase convenience in use.

The invention provides a multimedia signal processing device, which includes an encoding device, a signal shunt unit, a multi-mode modulation unit, and a signal output unit. Encoding device includes processing unit with multiple cores The processing unit receives the multimedia signal, encodes the multimedia signal to generate an encoded signal, and generates an instruction signal. The signal shunting unit is coupled to the encoding device, receives the encoding signal and the instruction signal, and shunts the encoding signal according to the instruction signal to generate multiple shunting signals. The multi-mode modulation unit is coupled to the signal shunt unit, receives the shunt signal, and performs multi-mode modulation on the shunt signal to generate multiple multi-mode modulation signals. The signal output unit is coupled to the multi-mode modulation unit, receives the multi-mode modulation signal, and mixes the multi-mode modulation signal to output a mixed carrier signal.

According to the multimedia signal processing device disclosed in the present invention, a multimedia signal is encoded and processed by a plurality of core processing units in an encoding device to generate an encoded signal and generate an instruction signal. The encoded signal is shunted to generate multiple shunted signals, and the multi-mode modulation unit performs Inverse Fast Fourier Transform (IFFT) and multi-mode modulation on the shunted signal to generate multiple identical or different multi-mode modulations. Variable signal, and mixed multiple multi-mode modulation signals through the signal output unit to output on the frequency bands of multiple carriers. The frequency range is 50MHz to 2400MHz. Each modulation signal carrier width range can be based on the ground wave of each country. It is standard to adjust the band bandwidth. For example, the DVB-T system can transmit 5MHz, 6MHz, 7MHz, and 8MHz. In this way, normal playback and display can be effectively performed on digital televisions of different standards and specifications, without being restricted by regions or regions, in order to increase convenience in use.

The above description of the content of the present invention and the description of the following embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

100, 200‧‧‧Multimedia signal processing device

110‧‧‧coding device

111‧‧‧processing unit

120, 210‧‧‧ signal distribution unit

130‧‧‧Multi-standard modulation unit

131_1 ~ 131_N‧‧‧Multi-system modulator

140‧‧‧Signal output unit

141‧‧‧Signal mixing unit

142‧‧‧First connection unit

150‧‧‧Multimedia device

211‧‧‧Second connection unit

212‧‧‧Signal Splitter

The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: FIG. 1 is a schematic diagram of a multimedia signal processing device according to an embodiment of the present invention.

FIG. 2 is another schematic diagram of a multimedia signal processing device according to an embodiment of the present invention.

The detailed features and advantages of the present invention are described in detail in the following embodiments. The content is sufficient for any person skilled in the art to understand and implement the technical contents of the present invention. Anyone skilled in the relevant art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the viewpoints of the present invention, but do not limit the scope of the present invention in any way.

For example, certain terms are used in the description and the scope of patent applications to refer to specific elements. Those skilled in the art will understand that hardware manufacturers may use different terms to refer to the same component. The scope of this specification and the patent application does not use the difference in names as a way to distinguish components, but rather uses the difference in functions of components as a criterion for distinguishing components. As mentioned in the entire specification and in the scope of patent application, "including" is an open-ended term, so it should be interpreted as "including but not limited to." "Approximately" means that within the acceptable error range, those skilled in the art can solve the technical problem within a certain error range, and basically achieve the technical effect. In addition, the term "coupled" includes any direct and indirect electrical coupling means. Therefore, if a first device is described as being coupled to a second device, it means that the first device can be directly electrically coupled to the second device, or indirectly electrically coupled through other devices or coupling means. Connected to the second device. The subsequent description of the specification is a preferred embodiment for implementing the present application, but the description It is for the purpose of illustrating the general principles of this application and is not intended to limit the scope of this application. The scope of protection of this application shall be subject to the limits defined by the appended claims.

It should also be noted that the terms "including", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, product or system that includes a series of elements includes not only those elements, but also Other elements not explicitly listed, or elements that are inherent to such a process, method, commodity, or system. Without more restrictions, the elements defined by the sentence "including a ..." do not exclude the existence of other identical elements in the process, method, product or system including the elements.

In the embodiments listed below, the same reference numerals will be used to represent the same or similar elements or components.

FIG. 1 is a schematic diagram of a multimedia signal processing apparatus according to an embodiment of the present invention. The multimedia signal processing device 100 includes an encoding device 110, a signal distribution unit 120, a multi-standard modulation unit 130, a signal output unit 140, and a multimedia device 150.

The encoding device 110 includes a processing unit 111 having a plurality of cores. The processing unit 111 receives the multimedia signal, encodes the multimedia signal to generate a coded signal, and generates an instruction signal.

In this embodiment, the encoding device 110 is, for example, a mobile phone or a computer or an encoder core unit device capable of encoding, and the encoding device 110 is coupled to the multimedia device 150 through a wired or wireless (such as a network) manner. To receive the multimedia signal provided by the multimedia device 150. The multimedia device is, for example, an SD memory card, a flash drive, a hard disk, a solid-state hard disk, and the like, and the multimedia signal includes, for example, video, sound, and data.

In addition, the encoding format used by the processing unit 111 to encode the multimedia signals includes, for example, MPEG Layer 1, MPEG Layer 2, MPEG Layer 3, MPEG Layer 4, and H.264. (Advanced Video Coding, AVC for short), H.265 (High Efficiency Video Coding, HEVC), AAC (Advanced Audio Coding), AC3 (Arc-Consistency Algorithm 3), etc. In addition, the processing unit 111 generates, for example, a corresponding instruction signal according to the number of cores, wherein the instruction signal is used to indicate that the encoded signal can be divided into several channels. For example, if the number of cores of the processing unit 111 is two, the processing unit 111 generates, for example, an instruction signal of “2”, so that the instruction encoding signal can be divided into two channels. Assuming that the number of cores of the processing unit 111 is four, the processing unit 111 generates, for example, an instruction signal of “4”, so that the instruction encoding signal can be divided into four channels. Assuming that the number of cores of the processing unit 111 is eight, the processing unit 111 generates, for example, an instruction signal of “8”, so that the instruction encoding signal can be divided into eight channels. The number of cores of the other processing units 111 can be deduced by analogy, so it will not be repeated here.

The signal shunt unit 120 is coupled to the encoding device 110, receives the encoded signal and the instruction signal, and shunts the encoded signal according to the instruction signal to generate a plurality of shunt signals. For example, if the indication signal is "2", which indicates that the encoded signal can be divided into 2 channels, the signal distribution unit 120 will divide the encoded signal into 2 divided signals. Assuming that the indication signal is “4”, which indicates that the encoded signal can be divided into 4 channels, the signal distribution unit 120 divides the encoded signal into 4 divided signals. Assuming that the indication signal is "8", which indicates that the encoded signal can be divided into 8 channels, the signal distribution unit 120 divides the encoded signal into 8 divided signals.

The multi-mode modulation unit 130 is coupled to the signal shunt unit 120, receives the shunt signal, and performs multi-mode modulation on the shunt signal to generate multiple multi-mode modulation signals. Wherein, the corresponding systems of the multiple multi-mode modulation signals may be the same or different. That is, the multi-mode modulation unit 130 performs Inverse Fast Fourier Transform (IFFT) and multi-mode modulation on the shunt signal to generate multiple multi-mode modulation signals that are the same or different.

Further, the multi-standard modulation unit 130 includes a plurality of multi-standard modulators. 131_1 ~ 131_N, where N is a positive integer greater than 1. In addition, the number of multi-mode modulators 131_1 to 131_N matches the number of cores of the processing unit 111. For example, if the number of cores of the processing unit 111 is two, the number of multi-mode modulators is also two, such as multi-mode modulators 131_1 to 131_2. Assuming that the number of cores of the processing unit 111 is four, the number of multi-mode modulators is also four, such as multi-mode modulators 131_1 to 131_4. Assuming that the number of cores of the processing unit 111 is eight, the number of modulators is also eight, such as multi-mode modulators 131_1 to 131_8. The number of other multi-mode modulators 131_1 ~ 131_N matches the number of cores of the processing unit 111, and so on, so it will not be repeated here.

Assume that there are two shunt signals, for example, the shunt signals TS1 and TS2. In one embodiment, the multi-standard modulation unit 130 modulates the two shunt signals TS1 and TS2 in multiple standards, for example, the shunt signal TS1 is modulated with the system A, and the shunt signal TS2 is modulated with the system B To generate a modulation signal conforming to system A and a modulation signal conforming to system B. Therefore, the standard modulation signal generated by the multi-standard modulation unit 130 outputs a different standard.

In another embodiment, the multi-standard modulation unit 130 performs multi-standard modulation on the two shunt signals TS1 and TS2. For example, the shunt signals TS1 and TS2 are modulated in the same standard with the standards A and B at the same time to generate a standard compliance A and B modulation signals. Therefore, the standard modulation signal generated by the multi-standard modulation unit 130 outputs the same standard.

Among them, the standards corresponding to the aforementioned multi-system modulation include J83A, J83B, J83C, Advanced Television Systems Committee (ATSC), Digital Video Broadcasting-Terrestrial (DVB-T), terrestrial Digital Video Broadcasting-Terrestrial 2, DVB-T2, Digital Video Broadcasting-Satellite (DVB-S), Digital Video Broadcasting-Satellite 2, DVB-S2 Digital Terrestrial Broadcasting Multimedia Broadcast (DTMB) and terrestrial integrated digital service broadcasting (Integrated Services Digital Broadcasting-Terrestrial, ISDB-T).

The signal output unit 140 is coupled to the multi-mode modulation unit 130, receives multiple multi-mode modulation signals carried in different frequency bands, and mixes each channel carrier on the same output terminal to output a mixed carrier signal. Among them, the mixed carrier signal can output multiple carrier frequency bands, and its frequency range is 50MHz to 2400MHz, and each modulation signal carrier width interval can be adjusted according to the ground wave specifications of various countries. For example, DVB-T system can transmit 5MHz, 6MHz, 7MHz, 8MHz, etc. In addition, the mixed carrier signal can be further output to multiple digital televisions, so that these digital televisions decode and process the mixed carrier signals accordingly, so that the corresponding multimedia signals can be played on these digital televisions.

Further, the signal output unit 140 includes a signal mixing unit 141 and a first connection unit 142. The signal mixing unit 141 is coupled to the multi-mode modulation unit 130, receives the multi-mode modulation signal, and mixes the multi-mode modulation signal to generate a mixed carrier signal. The first connection unit 142 is coupled to the signal mixing unit 141 and receives and outputs a mixed carrier signal.

In this embodiment, the first connection unit 142 is, for example, a coaxial cable, which can effectively extend the signal transmission distance to avoid problems such as signal degradation, data incompleteness, and fragile signals during the transmission process. In other words, the mixed carrier signal can be used to output the mixed carrier signal to multiple digital TVs in a wired manner, so that these digital TVs can decode and process the mixed carrier signals accordingly, so that the corresponding digital TVs can be played on these digital TVs. Multimedia signals. The first connection unit 142 may also be a transmitting antenna, so that the mixed carrier signal can also be output to multiple digital televisions for reception by wireless means.

In addition, the aforementioned multiple digital televisions can be used as multi-screen displays of airports and train schedules, such as commercial advertising machines or electronic signage systems. Moreover, the aforementioned multiple digital TVs can also be placed in different Location, such as one in the living room and three in different rooms, these digital TVs can still receive the multimedia signals processed by this embodiment through a coaxial cable, and play and display the same multimedia signals to increase convenience in use . In addition, the mixed carrier signal generated in this embodiment can have multiple different standards, so that digital televisions with different standards can still be played and displayed normally, without being restricted by regions or areas, and it can also increase the convenience of use. Sex.

FIG. 2 is another schematic diagram of a multimedia signal processing device according to an embodiment of the present invention. The multimedia signal processing device 200 includes an encoding device 110, a signal distribution unit 210, a multi-standard modulation unit 130, and a signal output unit 140. The connection relationship between the encoding device 110, the multi-standard modulation unit 130, and the signal output unit 140, and related operations are the same as or similar to those of the encoding device 110, the multi-standard modulation unit 130, and the signal output unit 140 in FIG. The description of the embodiment 1 will not be repeated here.

In addition, the signal output unit 140 may also include a signal mixing unit 141 and a first connecting unit 142, and the connection relationship between the signal mixing unit 141 and the first connecting unit 142 and related operations are also the same as those of the signal mixing unit 141 and the first The connection units 142 are the same or similar, and reference may be made to the description of the embodiment in FIG. 1, and therefore will not be repeated here.

The signal distribution unit 210 includes a second connection unit 211 and a signal distribution unit 212. In this embodiment, the second connection unit 211 is, for example, a computer bus interface having a universal serial bus (USB) interface or a PCI-express or mini-PCI-express.

The signal splitter 212 is coupled to the second connection unit 211, receives the encoded signal and the instruction signal through the second connection unit 211, and shunts the encoded signal according to the instruction signal to generate a shunt signal.

That is, the encoding device 110 can be set as the first device, and the signal distribution unit 210, the multi-standard modulation unit 130, and the signal output unit 140 can be integrated into the second device, that is, the first device The second device is separated from the second device, and the first device and the second device can be connected through the second connection unit 211.

To sum up, the multimedia signal processing device disclosed in the embodiment of the present invention encodes a multimedia signal by using a plurality of core processing units in the encoding device to generate an encoded signal, and generates an instruction signal. Instruction signal, the encoded signal is shunted to generate multiple shunt signals, and the multi-mode modulation unit performs multi-mode modulation on the shunt signal to generate multiple multi-mode modulation signals, and the multi-mode modulation is performed by the signal output unit. The variable signals are mixed to output a mixed carrier signal. In this way, normal playback and display can be effectively performed on digital televisions of different standards and specifications, without being restricted by regions or regions, in order to increase convenience in use. After inverse Fourier (IFFT) modulated digital signal processing and digital TV multi-system encoding, digital TV broadcasting can be performed through wireless or wired transmission, such as signal transmission through coaxial cables, effectively extending the signal transmission distance. To avoid problems such as signal degradation, incomplete data, and fragile signals during the transmission process.

Although the present invention is disclosed in the foregoing embodiments, it is not intended to limit the present invention. Changes and modifications made without departing from the spirit and scope of the present invention belong to the patent protection scope of the present invention. For the protection scope defined by the present invention, please refer to the attached patent application scope.

Claims (9)

A multimedia signal processing device includes: an encoding device including a processing unit having a plurality of cores, the processing unit receiving a multimedia signal, encoding the multimedia signal to generate an encoded signal, and generating an instruction signal; A signal shunt unit is coupled to the encoding device, receives the coded signal and the instruction signal, and shunts the coded signal according to the instruction signal to generate multiple shunt signals; a multi-mode modulation unit is coupled to the A signal shunting unit that receives the shunting signals and performs multi-mode modulation on the shunting signals to generate multiple multi-mode modulation signals; and a signal output unit that is coupled to the multi-mode modulation unit and receives the The multi-mode modulation signal is mixed, and the multi-mode modulation signals are mixed to output a mixed carrier signal. The multimedia signal processing device according to claim 1, wherein the multi-mode modulation unit includes a plurality of multi-mode modulators, and the number of the multi-mode modulators matches the number of the cores. The multimedia signal processing device according to claim 1, wherein the signal output unit includes: a signal mixing unit coupled to the multi-mode modulation unit, receiving the multi-mode modulation signals, and modulating the multi-mode modulation signals The signals are mixed to generate the mixed carrier signal; and a first connection unit is coupled to the signal mixed unit to receive and output the mixed carrier signal. The multimedia signal processing device according to claim 3, wherein the first connection unit is a coaxial cable. The multimedia signal processing device according to claim 1, wherein the signal shunt unit includes: a second connection unit; and a signal shunt, coupled to the second connection unit, and receiving the encoded signal through the second connection unit. The instruction signal, and the encoded signal is shunted according to the instruction signal to generate the shunt signals. The multimedia signal processing device according to claim 5, wherein the second connection unit is a connector having a computer bus interface having a universal serial bus interface which is PCI-express or mini-PCI-express. The multimedia signal processing device according to claim 1, wherein the encoding device is a mobile phone or a computer or a hardware core unit device capable of encoding. The multimedia signal processing device according to claim 1, further comprising: a multimedia device coupled to the encoding device to provide the multimedia signal. The multimedia signal processing device according to claim 8, wherein the multimedia device is an SD memory card, a flash drive, a hard disk, or a solid state hard disk.