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A high frequency tuner

A tuner and channel technology, applied in the field of tuners, can solve the problems of increasing complexity, reducing system reliability, increasing costs, etc.

Inactive Publication Date: 2008-04-16
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generating a DiSEqC compliant signal in a set-top box increases its complexity and implicitly its cost
Also note that if more than one broadcast is being received, multiple coaxial cables are required, which increases cost and reduces overall system reliability

Method used

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  • A high frequency tuner
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  • A high frequency tuner

Examples

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Embodiment Construction

[0018] figure 1 A block diagram of a receiving system according to the present invention is depicted. The receiving system 100 comprises a tuner 1 for receiving a satellite broadcast signal IN_S via an antenna device 10 , said tuner 1 being connected to a control unit 20 located remotely from the tuner 1 . The receiving system 100 is characterized in that the control unit 20 is connected to the tuner 1 via a first bidirectional bus BUS1 adapted for signals with a lower bandwidth.

[0019] The first bus BUS1 can be adapted to receive and transmit signals conforming to eg IEEE 1394 or USB standards. Communication between the various blocks of the receiving system is facilitated using a bus compatible with standard signals of wired or wireless systems. The control unit 20 may be a personal computer (PC) or a set-top box, and the tuner 1 becomes a peripheral device. The control unit 20 is further connected via a second standard bus BUS2, and the second bus BUS2 connects the con...

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PUM

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Abstract

A tuner for receiving a satellite broadcast signal via an antenna means, said tuner being coupled to a control unit. The tuner is characterized in that it comprises a standard bilateral digital interface for transmitting a base-band signal obtained from the received signal received via the antenna means and for receiving control signals transmitted by the control unit, said signals being transmitted / received via a first bilateral bus.

Description

technical field [0001] The invention relates to a tuner for receiving satellite broadcast signals via an antenna device, the tuner being connected to a control unit. Background technique [0002] Currently, reception systems are widely used due to the growth of cable television, the Internet, and other high-frequency devices. They use relatively high frequency signals, for example in the GHz range, and are combined into one basic component, the receiver. [0003] A commonly used method of realizing a high frequency system is described in US-A-6,031,878. In this patent a direct conversion tuner incorporated in a set top box is proposed. The receiving system uses double frequency conversion, ie the input signal frequency range is first converted to a first intermediate frequency which is converted to a second intermediate frequency. In such a system, in a low noise block (LNB) located in the dish antenna, the high frequency input signal is first converted to a first interme...

Claims

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Application Information

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IPC IPC(8): H04N7/20H04B1/06H04B1/18H04B1/26H04H1/00H04H40/90H04N7/16
CPCH04N7/16H04N7/20H04N21/43632H04N21/4383H04N21/43615H04H40/90
Inventor P·W·胡伊曼斯C·S·沃彻尔
Owner NXP BV