KR100961657B1 - Receiver - Google Patents

Abstract

A broadcast receiver is disclosed. According to the present invention, a broadcast receiver tunes a high frequency channel from a broadcast signal and outputs an intermediate frequency signal from each tuner corresponding to a plurality of different types of tuners for outputting an intermediate frequency (IF) signal of the tuned channel. A driver unit having a plurality of drivers for demodulating the signal, a first tuner of any one of the plurality of tuners, and a type of the first tuner according to a pulse wave received from the first tuner, wherein any one of the plurality of drivers is selected. And a control unit for controlling the driver unit to be selected and operated.

Broadcast, tuner, GPIO, driver

Description

Broadcast receiver {RECEIVER}

1 is a block diagram schematically illustrating a part of a broadcast receiver according to an embodiment of the present invention;

2 is a flowchart illustrating a control method of a broadcast receiver according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

110: tuner 120: control unit

130: driver unit

The present invention relates to a broadcast receiver and a control method thereof.

Currently, many broadcast receiver product developers are pursuing a diversification policy that pursues the effects of product production and price stabilization through diversification of parts supply.

In particular, in the case of the tuner, which is a core part of the broadcast receiver, the need for such a diversification policy is increased.

However, when developing the product by diversifying the source of the tuner, in addition to the uniformity of the connection part type such as the arrangement of the hardware pins, the driver applied to each tuner must be different.

In addition, according to such a diversification policy, not only do different drivers need to be appropriately applied to each tuner in production, but also the driver needs to be changed when the tuner itself or important parts inside the tuner are changed while using the product. Occurs.

The present invention solves the above problems and has been proposed in accordance with the recent trends and requests, and an object of the present invention is a broadcast receiver capable of controlling a corresponding driver to operate according to the type of tuner in the broadcast receiver and its To provide a control method.

As an aspect of the present invention for achieving the above object, a broadcast receiver according to the present invention, a plurality of mutually tuned high-frequency channel from the broadcast signal, and outputs an intermediate frequency (IF) signal of the tuned channel A driver unit having a plurality of drivers for demodulating the intermediate frequency signals output from the respective tuners in correspondence with the different types of tuners, respectively; A first tuner of any one of the plurality of tuners; And a controller configured to determine the type of the first tuner according to the pulse wave received from the first tuner and to control the driver to select one of the plurality of drivers to operate.

The control unit may receive the pulse wave through a general purpose input / output (GPIO) port.

The tuner may generate and transmit the pulse wave to the controller after a predetermined time delay after power is applied.

The tuner may transmit the pulse wave to the controller by unifying a clock period during the time delay.

In addition, the plurality of tuners may have the same clock period.

The tuner may transmit the pulse wave to the controller through a serial transmission line.

The apparatus may further include a memory configured to store the plurality of pulse waves preset in correspondence with the types of the plurality of drivers.

The above objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals denote like elements throughout the specification. In addition, when it is determined that the detailed description of the known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram illustrating a part of a broadcast receiver according to an embodiment of the present invention. The broadcast receiver as shown in FIG. 1 may be applied to various electronic devices capable of receiving audio or video broadcasts as an example.

Referring to FIG. 1, the broadcast receiver 100 according to an embodiment of the present invention includes a tuner 110, a controller 120, and a driver 130.

The tuner 110 tunes one high frequency channel by a tuning control signal input from the control unit 120 to be described later among radio frequency broadcast streams received through an antenna (not shown), and an intermediate frequency of the tuned channel. Outputs (IF: Intermediate Frequency) signal.

The controller 120 controls the overall operation of the broadcast receiver 100. In addition, according to an embodiment of the present invention, the controller 120 detects the pulse wave input from the tuner 110 to determine the type of the tuner and controls the driver 130 to apply a driver corresponding thereto.

The tuner 110 and the controller 120 may be connected through a line 10 including a serial transmission line such as, for example, I2C. The line 10 may be a line generally connected to the control unit 120 to control the tuner 110. In this case, the line 10 may be connected using, for example, a general purpose input / output (GPIO) port of the controller 120.

When the power is turned on, the tuner 110 may transmit pulse waves to the control unit 120 through, for example, one of the serial transmission lines of the connection line 10. Accordingly, the control unit 120 may receive, for example, a GPIO. It can be used to receive the pulse wave transmitted through any one serial line.

On the other hand, the transmission of the pulse wave from the tuner 110 to the control unit 120 does not necessarily need to be performed through a specific fixed pin, for example, any existing pin such as an RF AGC (Automatic Gain Control) voltage pin. It can also be done through.

The driver unit 130 includes a plurality of first to third drivers 130-1 to 130-3, and selectively operates any one of them to demodulate the IF signal output from the tuner 110 to the baseband ( baseband) signal, and reproduces the data bit stream by channel decoding to output a reproduction signal. Meanwhile, although the driver unit 130 is described as performing channel decoding together with demodulation, the driver unit 130 may be implemented by a processor (not shown) provided separately or by the controller 120.

In addition, although the driver unit 130 is provided with three drivers as an example here for convenience of description, the present invention is not limited thereto, and the driver unit 130 may appropriately include the required number of drivers in some cases. have.

Although some components of the broadcast receiver according to an embodiment of the present invention have been described above, the components of the broadcast receiver are not limited thereto, and although not shown, separate components for processing a memory, audio, or video signal for storing various data are illustrated. A processor, an input for inputting a control command from a user, an audio output or a display for outputting a processed audio or video signal, or the like.

2 is a diagram for describing a control operation of a broadcast receiver according to an embodiment of the present invention.

Referring to FIG. 2, first, when power is applied to the tuner 110 of the broadcast receiver 100 (S210), the tuner 110 performs a time delay for a predetermined time (S220).

Thereafter, the tuner 110 generates a pulse wave set according to the type of the tuner and transmits the pulse wave to the controller 120 through any one of the lines 10 connected to the controller 120 (S230). At this time, the tuner 110 may transmit a pulse wave to the controller 120 by unifying a clock period, for example, 10 uS. In this case, it is preferable that all kinds of tuners that can be employed in the broadcast receiver 100 adopt the same clock period.

The controller 120 receives the pulse wave transmitted from the tuner 110 through the GPIO port, for example, and determines the type of the tuner 110 (S240).

In the case where the pulse wave is composed of, for example, 8 bits, 256 types of tuners can be determined for each tuner manufacturer. For example, if the pulse wave represents "00000000", the A tuner of company A, if "00000001" represents the tuner B of company A, and "11111111" represents the tuner of company Z, the type of each tuner is changed in the same manner. Different pulse waves can be set to correspond in advance.

Therefore, the controller 120 may determine the type of tuner by analyzing the pulse wave to grasp 8-bit data. Corresponding relationships between different tuner types and pulse waves may be stored in advance in a memory (not shown) or a separate memory (not shown) provided in the controller 120 to be searched if necessary.

Subsequently, the control unit 120 corresponds to any one of the types of the tuner 110 determined among the first drivers 130-1 to the third driver 130-3 provided in the driver unit 130, for example. Controls the driver 130 to selectively drive the driver 130-2, demodulates an intermediate frequency (IF) signal output from the tuner 110, converts the IF signal into a baseband signal, and decodes the data. The bit string is reproduced to output a reproduction signal (S250).

Therefore, the user can select and drive the driver corresponding to the type of tuner automatically according to the type of tuner without the hassle of selecting and operating the driver corresponding to the type of tuner through separate operations. Convenience is improved.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, according to the broadcast receiver and its control method according to the present invention, even if the type of the tuner is variously applied or changed according to the diversification policy of the tuner, which is the core product of the broadcast receiver, the user separately installs or selects a driver and operates the driver. The user's convenience can be improved by automatically determining the type of tuner and selectively driving a driver corresponding thereto without any inconvenience.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the present invention is not limited to the specific embodiments of the present invention without departing from the spirit of the present invention as claimed in the claims. Anyone of ordinary skill in the art can make various modifications, as well as such changes are within the scope of the claims.

Claims (7)

A plurality of demodulators that tune high frequency channels from a broadcast signal and demodulate intermediate frequency signals output from the respective tuners corresponding to a plurality of different types of tuners that output intermediate frequency (IF) signals of the tuned channels. A driver unit having a driver; A first tuner of any one of the plurality of tuners; A controller which determines the type of the first tuner according to the pulse wave received from the first tuner and controls the driver to select one of the plurality of drivers to operate; And A general purpose input / output (GPIO) port for connecting the plurality of tuners and the control unit to transmit the pulse wave from the plurality of tuners to the control unit; and the connection between the control unit and the GPIO port is an RF AGC voltage. Broadcast receiver, characterized in that performed via a pin. delete The method of claim 1, And the plurality of tuners generate the pulse wave and transmit the generated pulse wave to the controller after a predetermined time delay after power is applied. The method of claim 3, wherein And the plurality of tuners transmit the pulse wave to the controller by unifying a clock period during the time delay. The method of claim 1, And the plurality of tuners have the same clock period. delete The method of claim 1, And a memory configured to store the plurality of pulse waves preset in correspondence with the plurality of drivers, respectively.

Images