Patent Application
20100275240
1. Field of the Invention
The present invention relates to a receiver, in particular, to a television signal receiver.
2. Description of Related Art
Watching television has become an important entertainment for people, wherein the signals for the television can be categorized into analog television signal and digital television signal. Therein, analog television signal has been developed for a long time and is widely used, and some common ways to receive and view the analog television signal is by directly installing an antenna or connecting to a television cable that is provided by the cable television industry.
However with the progression of computer technology, computer may now also function in conjunction with a television tuner so as to receive and view television signals. Yet, in terms of a computer receiving and viewing digital television, due to the limitations of digital television cable acting as a fixed transmission route, so that it is inconvenient to move and relocate the computer (such as a notebook computer) to different locations for viewing.
On the other hand, current high level mobile phones have the capability to directly receive and view digital television signal, however the majority of common mobile phones still lacks the function of broadcasting digital television signals, due to the fact that a common mobile phone can only provide limited processing power; therefore, even if the common mobile phone externally connects with a digital television receiver, the common mobile phone would still have the limitation of being incapable of broadcasting digital television signals. Therein, the fact that the common mobile phone cannot perform decompression processing to the output signal of the digital television receiver constitutes as a primary reason for the aforementioned limitation; furthermore the output signal of the digital television receiver has a set requirement for transmission bandwidth, and the transmission interface for a common mobile phone often has difficulty in satisfying such requirement.
In view of the aforementioned issues, the present invention provides a television signal receiver, a television signal relay system, and a television signal broadcast system, so that through appropriate image compression processing, the output signal of the television signal receiver may be received and broadcast more easily, thereby resolving the aforementioned issues of the prior art.
In order to achieve the aforementioned objectives, the present invention provides a television signal receiver according to an embodiment of the present invention, which includes: a television tuner module, a compression unit and a transmission unit. Therein, the television tuner module is for outputting and providing a television data stream to the compression unit, so that the compression unit may compress the television data stream via a compression technique then outputting a compressed television data stream. The transmission unit is for outputting the processing result of the compression unit, such as the compressed television data stream. Therein the compression technique is by compressing and converting each image within the television data stream into a dynamic image for sequential output.
To achieve the aforementioned objectives, the present invention further provides a television signal relay system according to another embodiment of the present invention, which includes: a television signal receiver and a wireless transmitter. Therein the television receiver includes a television tuner module, a compression unit, and a transmission unit; the television tuner module is for outputting and providing a television data stream to the compression unit, so that the compression unit may compress the television data stream via a compression technique then outputting a compressed television data stream; the transmission unit is for outputting the processing result of the compression unit, such as the compressed television data stream; and the compression technique is by compressing and converting each image within the television data stream into a dynamic image for sequential output. The wireless transmitter is coupled to the television signal receiver, for wirelessly outputting the compressed television data stream.
To achieve the aforementioned objectives, the present invention further provides a television signal broadcast system according to another embodiment of the present invention, which includes: a television signal receiver and a portable electronic device. Therein the television receiver includes a television tuner module, a compression unit, and a transmission unit; the television tuner module is for outputting and providing a television data stream to the compression unit, so that the compression unit may compress the television data stream via a compression technique then outputting a compressed television data stream; the transmission unit is for outputting the processing result of the compression unit, such as the compressed television data stream; and the compression technique is by compressing and converting each image within the television data stream into a dynamic image for sequential output. The portable electronic device includes a display monitor. The portable electronic device is coupled to the television signal receiver, for receiving, decompressing, and then outputting the compressed television data stream for broadcast on the display monitor.
Therefore through the aforementioned technical proposal of the present invention, the following efficacy is achieved: the compression technique used by the television signal receiver may reduce the bandwidth requirement for the television data stream, thereby the required hardware-resource may be lowered at the receiving terminal for the digital data stream, so that the television data stream can be transmitted, received, and broadcasted easier.
In order to further understand the techniques, means, and effects the present invention takes for achieving the prescribed objectives, the following detailed descriptions and appended drawings are hereby referred; such that, through which the purposes, features, and aspects of the present invention can be thoroughly and concretely appreciated; however, the appended drawings are merely provided for reference and illustration, without any intention to be used for limiting the present invention.
First please refer to
The compression unit 12 is coupled to the television tuner module 10, for receiving the television data stream, and for performing compressing to the television data stream, so that the amount of transmitted data for the television data stream may be greatly reduced. More specifically speaking, the compression unit 12 includes a compression engine 120, an output unit 122, and a scaling unit 124. Therein the compression engine is for receiving the television data stream, and then providing image compression processing at a set compression ratio for each image within the television data stream; then the output unit 122 sequentially outputs the each image according to processing result of the compression engine 120, so as to form a compressed television data stream for dynamic image output. The scaling unit 124 is for controlling the compression ratio of the compression engine 120, wherein the compression ratio may be adjusted to determine the data size for each of the compressed image. The aforementioned compression technique used by the compression unit 12 is primarily according to a motion-JPEG compression technique.
The transmission unit 14 is coupled to the output terminal of the compression unit 12, and is for outputting the compressed television data stream that has last been output by the compression unit 12 to an external wireless electronic device for wireless transmitting or to an electronic device for direct broadcasting. The present embodiment of the present invention ideally uses USB transmission interface for the transmission unit 14. Through the universality of the USB transmission interface, the television signal receiver 1 may achiever easier connection with an external electronic device for data transmission. For actual implementation, the aforementioned scaling unit 12 and transmission unit 14 may be integrated on an integrated circuit, so that the size of the television signal receiver 1 may be reduced.
Next is the explanation of a few possible operating ways for the aforementioned television signal receiver 1. Please refer to
Furthermore, please refer to
In accordance with the system structure disclosed in
The wireless communication of the aforementioned terminal device 5 is compatible with the communication format used by wireless transmitter 3, furthermore the broadcasting function of the terminal device 5 supports motion-JPEG decompression technique, and the terminal device 5 may be a personal computer, a palm's pilot, or a notebook computer.
Regarding the system structure shown in
Furthermore, please refer to
The connection interface used by the aforementioned portable electronic device 7 is compatible with the transmission format used by the transmission unit 14 of the television signal receiver 1. For example, the connection interface can be a USB interface, and the broadcasting function of the portable electronic device 7 may support motion-JPEG decompression technique, furthermore the portable electronic device 7 may be a personal computer, a palm's pilot, or a notebook computer.
Regarding the system structure shown in
As per the aforementioned embodiments, the television signal receiver 1 especially uses the motion-JPEG compression technique, and the application of this technique results in reduced hardware cost when compared with using the MPEG-2 technique; furthermore the device that is for receiving the output signal of the television signal receiver 1 does not need to be burdened with the complicated operation of MPEG-2 compression-decompression technique. As long as the device supports the motion-JPEG compression technique, then the device can broadcast television signals without high level processing hardware, so that the present invention allows many portable electronic devices on the current market to directly obtain the function of broadcasting television signals.
Furthermore, for the present invention, another advantage of the television signal receiver 1 for using the motion-JPEG image compression technique is that the required transmission bandwidth is less than using the MPEG-2. Thereby the television signal receiver 1 can be used more easily with the transmission interface of related electronic devices, such as the aforementioned USB interface of the transmission unit 14, however the present invention is not intended to be limited thereby, and other transmission interface may be used as long as the transmission bandwidth of the transmission unit 14 is compatible with the transmission requirement for the compressed television data stream.
Additionally, the television signal receiver 1 of the present invention is applicable for receiving analog television signal or digital television signal; for example when receiving analog television signal, an indoor cable television through combination of the television signal receiver 1 and a wireless transmitter 3, may remotely operates and broadcast television signal; or for another example, when receiving digital television signal, the television signal receiver 1 may directly connect with a portable electronic device 7, so as to perform the operating and broadcasting of television signals.
The aforementioned descriptions represent merely the preferred embodiment of the present invention, without any intention to limit the scope of the present invention thereto. Various equivalent changes, alternations, or modifications based on the claims of present invention are all consequently viewed as being embraced by the scope of the present invention.
