Steerable antenna and receiver interface for terrestrial broadcast
First Claim
1. An apparatus for use with an antenna device having an electronically steerable antenna pattern, said antenna device supporting a plurality of antenna pattern positions, the apparatus comprising:
- a demodulator module for processing a signal received by said antenna device and generating at least one signal measurement value therefrom;
an antenna control module for generating a plurality of multi-bit digital control signals to steer said antenna pattern, at least one of said multi-bit digital control signals being generated as a function of said at least one signal measurement value corresponding to said signal received by said antenna device, each multi-bit digital control signal including at least a first antenna device control value and a second antenna device control value, said first and second antenna device control values providing different antenna control information.
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Accused Products
Abstract
Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal'"'"'s S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.
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Citations
21 Claims
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1. An apparatus for use with an antenna device having an electronically steerable antenna pattern, said antenna device supporting a plurality of antenna pattern positions, the apparatus comprising:
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a demodulator module for processing a signal received by said antenna device and generating at least one signal measurement value therefrom; an antenna control module for generating a plurality of multi-bit digital control signals to steer said antenna pattern, at least one of said multi-bit digital control signals being generated as a function of said at least one signal measurement value corresponding to said signal received by said antenna device, each multi-bit digital control signal including at least a first antenna device control value and a second antenna device control value, said first and second antenna device control values providing different antenna control information. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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2. An apparatus for use with an antenna device having an electronically steerable antenna pattern, said antenna device supporting a plurality of antenna pattern positions, the apparatus comprising:
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a tuner for filtering signals received from said antenna device; a demodulator for performing a demodulation operation on signals received by said antenna device and processed by said tuner and for generating at least one signal measurement value; an antenna control module for generating a plurality of multi-bit digital control signals to steer said antenna pattern, at least one of said plurality of multi-bit signals being generated as a function of said at least one signal measurement value, each multi-bit digital control signal including at least a first antenna device control value and a second antenna device control value, said first and second antenna device control values providing different antenna control information; and wherein the first antenna control value is a position indicator value indicating one of said plurality of antenna pattern positions to which said antenna device is to be steered. - View Dependent Claims (12, 13)
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9. An apparatus for use with an antenna device having an electronically steerable antenna pattern, said antenna device supporting a plurality of antenna pattern positions, the apparatus comprising:
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an antenna control module for generating a plurality of multi-bit digital control signals to steer said antenna pattern, at least one of said multi-bit digital control signals being generated as a function of at least one signal measurement value corresponding to a signal received by said antenna device, each multi-bit digital control signal including at least a first antenna device control value and a second antenna device control value, said first and second antenna device control Values providing different antenna control information; a received signal processing module for generating said at least one signal measurement value, said received signal processing module includes a demodulator module; and a communications link coupling said antenna device to said demodulator, said signal received by said antenna device and at least one of said multi-bit digital control signals being communicated over said communications link.
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10. An apparatus for use with an antenna device having an electronically steerable antenna pattern, said antenna device supporting a plurality of antenna pattern positions, the apparatus comprising:
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an antenna control module for generating a plurality of multi-bit digital control signals to steer said antenna pattern, at least one of said plurality of multi-bit digital control signals being generated as a function of at least one signal measurement value corresponding to a signal received by said antenna device, each multi-bit digital control signal including at least a first antenna device control value and a second antenna device control value, said first and second antenna device control values providing different antenna control information; and wherein said antenna control circuitry includes means for determining when said antenna pattern position is in a position which produces less signal interference than at least one other antenna pattern position.
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11. The apparatus 2, wherein the antenna control module includes:
means for including channel information in at least some of said digital antenna control signals.
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14. A method of controlling an antenna device, the method comprising:
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receiving a signal from the antenna device; operating a demodulator to perform a demodulation operation on said received signal and to generate at least one signal measurement value from said received signal; and generating a multi-bit antenna control signal used for controlling characteristics of an antenna from the at least one signal measurement value generated by the demodulator, the control signal comprising; a first signal component including one of;
a direction field including antenna pattern direction control information, a gain field including antenna gain information, a channel number field including a channel number, and a polarization field including antenna polarization information; anda second signal component, said second signal component including a field which is different from the field included in said first signal component, said second signal component including one of;
a direction field including antenna pattern direction control information, a gain field including antenna gain information, a channel number field including a channel number, and a polarization field including antenna polarization information. - View Dependent Claims (15)
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16. A method of controlling an antenna device, the method comprising:
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receiving a signal from the antenna device; and generating a multi-bit antenna control signal used for controlling characteristics of an antenna, the control signal comprising; a first signal component including one of;
a direction field including antenna pattern direction control information, a gain field including antenna gain information, a channel number field including a channel number, and a polarization field including antenna polarization information; anda second signal component, said second signal component including a field which is different from the field included in said first signal component, said second signal component including one of;
a direction field including antenna pattern direction control information, a gain field including antenna gain information, a channel number field including a channel number, and a polarization field including antenna polarization information;wherein said first signal component includes a direction field; and wherein said second signal component includes a gain signal field, said direction signal field including more bits than said gain signal field. - View Dependent Claims (17, 18)
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19. A method of controlling an antenna, the method comprising the steps of:
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generating at least one digital control signal including a direction information field and at least one of a gain information field and polarization information field; and transmitting said digital control signal to an antenna. - View Dependent Claims (20)
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21. A method of controlling an antenna, the method comprising the steps of:
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generating at least one digital control signal including a direction information field and at least one of a gain information field, channel number field, and polarization information field; and transmitting said digital control signal to an antenna; wherein the step of generating a digital control signal includes measuring a signal characteristic of a broadcast signal received by said antenna; and wherein said direction information field includes multiple bits and wherein generating said at least one digital control signal includes incorporating a multi-bit channel number field and a gain field into said digital control signal, said gain field including at least one bit.
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Specification