KR100616451B1 - Single semiconductor chip for adapting video signals to display apparatus - Google Patents

Abstract

Disclosed is a single semiconductor chip configured to better perform the functions provided by three conventional semiconductor chips in a monitor for applying an image signal to a specification of the monitor for normal image display. The semiconductor chip has novel characteristics in storing main programs, display data channel (DDC) data, and display frame frequency (DFF) data together in a storage circuit such as REPROM, and a connection arrangement of the storage circuit and the driving circuit.

Description

Single semiconductor chip for adapting video signals to display apparatus

1 shows a semiconductor chip used in a monitor according to the prior art.

2 is a block diagram showing a first embodiment of the present invention.

3 is a block diagram showing a second embodiment of the present invention.

4 is a block diagram showing a third embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semiconductor chip that communicates with a video signal supply device for displaying a video signal on a video display device. More particularly, the present invention relates to a display device for displaying a video signal output from a VGA card. And a semiconductor chip for communicating with a VGA card.

As shown in Fig. 1, the conventional cathode ray tube (CRT) 1 requires a system to communicate with the VGA card 2 via the buses 3 and 4 in order to display an image normally. This system is usually equipped with a first chip 11 consisting of EEPROM, which stores Display Frame Frequency (DFF) data, and a VGA card via the bus 4. (DDC: Display Data Channel, hereinafter referred to as "DDC") accessible by the first group of data interface devices 132 and the first group of data interface devices 132 in communication with (2). A second chip 13 including an ipyrom 131 storing data, a ROM 120 storing a program executable as a central processing unit (CPU) 121 and a central processing unit, and a bus ( 3) a logic unit 123 which communicates with the VGA card 2 through the control unit and is controlled by the central processing unit 121 to output a signal so that the cathode ray tube of the cathode ray tube monitor 1 can display an image signal. And a third chip 12, which is a micro control unit (MCU).

The conventional system shown in FIG. 1 requires three semiconductor chips 11, 12, 13, which leads to complex interconnections and relatively complex designs and faces more difficult problems in mass production. In addition, there is a problem that the size reduction is not easy to meet the size reduction tendency of the display device, particularly the portable display device.

Accordingly, an object of the present invention is to provide a system on a single semiconductor chip so that three semiconductor chips, which are an essential component for a conventional monitor, can be replaced by a system composed of a single semiconductor chip, thereby improving the manufacturing yield as well as the cost. Low, facilitates design, enables mass production, and allows relatively high operating speeds to be realized.

It should be noted that the semiconductor chip of the present invention is not limited to the field of cathode ray tube monitors. Indeed, the semiconductor chip of the present invention can be applied to any type of display system.

The system-on-chip configuration according to the present invention stores the main program, the DDC data, and the DFF data together in a storage circuit such as a REPROM, and drives and storage circuits such as a CPU, an interface device, or a logic unit. It is characterized by a novel arrangement of connections between them.

According to an aspect of the present invention, a semiconductor chip communicates with a video signal supply device, which enables the video signal display device to display a video signal provided by the video signal supply device. The semiconductor chip may include storage means for storing a program (eg, a computer program, or an executable instruction group), a first group of data such as DDC data, and a second group of data such as DFF data; And reading the data of the first group in response to the data request signal received from the video signal supply, transmitting the read first group of data to the video signal supply, and receiving the data-match from the video signal supply. In response to the signal, detecting a data mode of the data match signal, reading a corresponding portion of the second group of data according to the detected data mode, receiving an instruction of a program approaching from the storage means, and receiving the video signal. Drive means for applying a corresponding portion of said second group data to be received by said video display device in order to be able to display a video signal provided by a providing device or a device associated therewith.

The application of the corresponding portion of the second group of data by the driving means in accordance with the program is such that the program is connected or executed by the driving means, and then the driving means causes the image display device to transmit the It may also mean that an instruction of an execution program for applying a corresponding portion of the second group data to the signal to be received by the image display apparatus which can display the image signal provided by the terminal may be received. That is, depending on the program, the corresponding portion of the second group data is applied to exist at a level or type that can be received by the image display apparatus, and causes the image display apparatus to provide an image provided by the image signal providing apparatus or a related apparatus. Allows you to display the signal.

The video signal (such as an RGB component) provided by the video signal supply device or a related device is not necessarily input to the semiconductor chip, but can be directly applied to the video display device, and the video display device is supplied by the semiconductor chip. It is displayed as a result that could be suitably enabled by the second group data correspondence portion.

According to another aspect of the present invention, the video signal supply device may be a computer, a video recorder output device, or any device having image data output for display, wherein the semiconductor chip is installed in the monitor and located on the monitor through a signal channel. It can be connected to the display control circuit of the image display device.

Conventionally, the display control circuit controls the display of the image display apparatus in accordance with a signal output from a system composed of three semiconductor chips shown in FIG. Similarly, according to the present invention, the display control circuit controls the display of the image display apparatus in accordance with an application corresponding portion of the second group data output from the driving means of the single semiconductor chip of the present invention. The storage means may be any type of memory capable of storing data accessible by the drive means.

The data request signal is transmitted to the driving means for reading the data of the first group and requesting the driving means to transmit the read data to the video signal supply device, whereby the video signal supply device (or its related device) is provided. The specification of the monitor expected to display the video signal can be recognized by the video signal supply device, and the video signal can be provided in a mode corresponding to the specification of the monitor.

The corresponding portion of the second group data is data that is part of the second group data, and corresponds to the data mode of the data match signal, and the data match signal is a vertical sync signal or a horizontal sync signal, or a combination signal of vertical and horizontal sync signals. It may be a synchronization signal such as. The corresponding part of the second group data cannot always be received by the image display apparatus, but can be applied according to a program because it can enable the image display apparatus to display an image signal provided by the image signal supply apparatus.

According to another aspect of the invention, the semiconductor chip may further comprise a communication channel between the drive means and the storage means for requesting the drive means to read the first group of data and the second group of data to access the program. . Specifically, the driving means of the present invention may include a first group of data interface device for transmitting the first group of data received by reading the data request signal to the image signal supply device, the single semiconductor chip of the present invention May include, in particular, a DDC communication channel for the first group of interface devices to access the first group of data.

According to another aspect of the invention, the storage means may comprise two storage units, the first storage unit and the second storage unit, which are physically connected or completely independent, wherein the first storage unit comprises a first group via a DDC communication channel. The first group of data that can be accessed by the data interface device of the computer stores the second group data, and the second group of data stores two programs and the second group of data that can be accessed by the driving means through the communication channel.

According to another aspect of the invention, a semiconductor chip communicates with a video signal transmission device, which enables the video signal display device to display a video signal output from the video signal transmission device (or related device). . The semiconductor chip includes driving means and storage means for storing a program (for example, a computer program or executable instructions) accessible by the driving means, data of a first group, and data of a second group; ,

The driving means is configured to store data of the first group from the storage means in response to a data request signal (which can be output from a video signal transmission device or a related device or a device controlled by the video signal) applied to the video signal transmission device. Detects the data mode of the data match signal in response to the data-match signal received from the video signal transmission device, reads a corresponding portion of the second group of data according to the detected data mode, and An image output from the image signal transmission apparatus or any system associated with or controlled by the image display apparatus by applying a corresponding portion of the second group data to be received by the image display apparatus under the instruction of? Enable to display the signal.

The image signal transmission device may be a computer system, an Internet interface, or any device capable of receiving, temporarily storing, or applying a signal for output to a display device.

According to another aspect of the present invention, a semiconductor chip is a first group data interface device, a logic processing device, which communicates with a video signal transmission device that enables a video signal display device to display a video signal output from the video signal transmission device. First storage means for storing first group data accessible by the first group data interface device, second storage for storing both program and second group data accessible by the logic processing device Means;

 The first group data interface device reads the first group of data and reads the first group data in response to the data request signal (which can be output from the video signal transmission device or the related device) applied to the video signal transmission device. In response to a data-match signal received from the video signal transmission device, detects a data mode of the data match signal, and outputs a corresponding portion of the second group of data according to the detected data mode. A corresponding portion of the second group data in order to read and to receive the instruction of the program so that the signal received by the video display device can cause the video display device to display the video signal output from the video signal transmission device. Apply.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

2, the single semiconductor chip 211 proposed in the present invention communicates with an image signal supply device such as a VGA card, and causes the image display device 212 to have an image signal supply device 22 or an image signal supply device 22. In order to display the video signal provided by the system related to the).

The single semiconductor chip 211 includes a storage unit 2112 for storing a program 2111p, display data channel (DDC) data 2111d, and display frame frequency data 2111f;

In response to the data request signal received from the video signal supply device 22, the first group of data 2111d is read and transmitted to the video signal supply device 22, and the data received from the video signal supply device 22-. A data mode of the data match signal to be read in response to the match signal, and according to the detected data mode, a corresponding portion of the second group of data 2111f is read, and the program 2111p accessed from the storage means 2111 ), The image display device 212 is applied to the image signal supply device 22 by applying the corresponding portion of the second group data so that the image display device 212 can receive the corresponding portion of the second group data in response to an instruction of. And driving means 2112 for displaying the video signal provided by the same.

The data 2111d of the first group indicates the specifications of the monitor 21 or the image display device 212. The video signal supply device 22 receives the specification information of the monitor 21 or the video display device 212 when receiving the first group of data 2111d transmitted from the driving means 2112. Viable or optimal driving mode of the video table market value 212 for displaying the video signal provided by the video signal supply device 22 (e.g., corresponding to the data mode of the data-match signal and the display screen specification) Among the second group of data 2111f representing the driving mode), a corresponding portion of the second group data is selected according to the sensing mode of the data-match signal, and accordingly the characteristic is determined by the corresponding portion of the second group data. The signal received or displayed by the image display device 212 allows the image display device 212 to perform appropriate functions for displaying the image signal applied thereto.

In the semiconductor chip 211, the driving means 2112 reads the first group of data 2111d and the second group of data 2111f from the storage means 2111 and accesses the program 2111p from the storage means 2111. For example, it may further include a communication channel composed of the data bus 2113 and the address bus 2114.

The semiconductor chip 211 has its own driving means including a processing device 2111P for reading the first group of data in response to the data request signal and for reading the corresponding portion of the second group of data according to the sensed data mode. May have 2112. The processing unit 2112P may be similar or identical to a conventional central processing unit (CPU) that may execute the program 2111p and operate according to the executed program.

In addition, the semiconductor chip 211 has its own driving means including a first group of data interface devices 2111d for transmitting the first group of data received by reading the data request signal to the image signal supply device 22. May have 2112. In response to the data request signal, the data interface device 2111d of the first group may read the data of the first group and transmit the read data of the first group to the video signal supply device. In response to the data write signal received from 22, the first group of data included in the data write signal may be written into the storage means 2111.

The semiconductor chip 2111 may further have its own driving means including a logic device 2112c for receiving a data match signal and sensing a data mode of the data match signal, the logic device 2112c having an image display device. In order for the signal received by 212 to enable the image display device 212 to display the image signal, a corresponding portion of the second group data is applied. For example, a signal representing or encoding a corresponding portion of the second group of data may be received by the image display device 212 and the image display device 212 may display an image signal provided by the image signal supply device 22. So that it is output in the proper form or at the proper level. As another example, the corresponding portion of the second group data may be received by the image display device 212 and control the image display device 212 for displaying the image signal provided by the image signal providing device 22. It can only be converted to an existing signal.

Furthermore, the semiconductor chip 211 communicates with the external user device so that the first group of data 2111d, the second group of data 2111f, and the program 2111p can be accessed by the user through an external user device (not shown). It may have its own drive means 2112 including an input / output device 2111t.

The semiconductor chip 211 may output the corresponding portion of the second group data to the image display device 212 through an input / output device 2111t or an additional input / output device according to design and manufacturing convenience. .

As shown in FIG. 3, in the semiconductor chip 211, in addition to a communication channel composed of a data bus 2113 and an address bus 2114, a first group of data interface units 2111d includes a first group of data 2111d. It may be configured to include a DDC communication channel 2115 between the data interface unit 2112d of the first group and the storage means 2111 so as to be accessible.

In Fig. 3, the communication channel composed of the data bus 2113 and the address bus 2114 still causes the driving means 2112 to read the first group of data 2111d and the second group of data 2111f, The program 2111p can be accessed. Here, the communication channel composed of the data bus 2113 and the address bus 2114 may only allow the driving means 2112 to read the second group of data 2111f and access the program 2111p. The semiconductor chip 211 according to FIG. 3 accesses the first group of data 2111d when the communication channel composed of the data bus 2113 and the address bus 2114 is in use. It can be understood that it can be configured to be used by a group of interface units 2112d.

The semiconductor chip 211 illustrated in FIG. 3 may have storage means 2111 including two storage portions 211-1 and 2111-2, as shown in FIG. 3, or physically connected together. Or completely independent of one another, as shown in FIG. 4. As shown in FIG. 4, the first storage 211-1 storing the first group of data 2111d may be accessed by the first group of interface units 2112d through the DDC communication channel 2115. And a second storage unit 2111-2 storing the program 2111p and the second group of data 2111f to the driving means 2112 through a communication channel composed of buses 2113 and 2114. Can be accessed by For example, both the program 2111p and the second group of data 2111f are accessible by the logic block 2112c and / or the processing unit 2112p in the drive means 2112.

It should be noted that neither the communication channel or the DDC communication channel 2115, which is composed of the buses 2113 and 2114, is limited to the configuration consisting of the data bus 2113 and the address bus 2114. In practice, the program 2111p, the first group of data 2111d and the second group of data 2111f are accessed by the drive means 2112, or the program 2111p and the second group of data 2111f are processed. While accessible by 2112P, the first group of data 2111d can be configured in any way as long as it can be accessed only by the first group of interface units 2112d.

The data request signal applied to the driving means 2112, specifically the first group data interface unit 2112d of the driving means 2112, has a special relationship with the video signal supply device 22 or the video signal supply device or supplies the video signal. It may come from a device controlled by the device 22. The data match signal received by the drive means 2112, specifically the logic block 2112c in the drive means 2112, is not always sent by the video signal supply 22, but instead has a special relationship with the video signal supply. A device having a control or a device controlled by the video signal supply device 22 can be sent. The program 2111p may be executed by the processing unit 2112P, and the processing unit 2112P may include a driving unit 2112, specifically, a central processing unit 2112P and / or a logic block (in the driving unit 2112). 2112c causes the corresponding portion of the second group data to be transferred to the image display device 212, or specifically, the display screen 212S of the image display device 212 has a special relationship with the image signal supply device 22 or the image signal supply device. Is applied to be received by the display control circuit 212C of the video display device 212, which makes it possible to display a video signal output from a device which is at or is controlled by the video signal supply device 22. It is also possible that the program 2111p can be used to detect the data mode of the data match signal and direct the central processing unit 2111P and / or the logic block 2112c to read the corresponding portion of the data of the second group to be applied. It is possible.

The functions of the two parts of the logic block 2112c and the processing unit 2112P may be performed by a circuit hereinafter referred to as "logical processing unit". That is, the logic processing device is a circuit including a logic block and a processing device which respectively perform the functions of the above-described logic block 2112c and the processing device 2112P.

The semiconductor chip 211 may further include an input / output device for communicating with the video signal supply / transmitter 22 through the signal channels 23, 24, 25, and 26. The input / output device described above can obviously be integrated with the input / output device 2112t, or its function can be performed by the input / output device 2112t.

Signal channels may be required between the logic block 2112c, the first group data interface unit 2112d, the processing device 2112P, and the input / output device in the driving means 2112 of the semiconductor chip 211.

Apparently the semiconductor chip 211 is configured to have its own storage means 2111 including the appropriate first group of data 2111d and the second group of data 2111f. For example, in order to display an image signal related to the sensed data mode, at least a corresponding portion of the data of the second group corresponding to the sensed data mode of the data match signal must be present among the second group of data 2111f. .

Meanwhile, while specific embodiments of the present invention have been described herein, it should be understood that the present invention is not limited to the disclosed embodiments. Modifications and variations may be made by those skilled in the art. Accordingly, the following claims are intended to embrace all such alterations and modifications without departing from the spirit and scope of the invention.

Claims (20)

A semiconductor chip which communicates with the video signal supply device such that the video display device displays the video signal provided by the video signal supply device. Storage means for storing a program, first group data and second group data, and driving means, The driving means reads the first group data in response to a data request signal received from the video signal supply device, transmits the read first group data to the video signal supply device, and receives from the video signal supply device. Detecting a data mode of the data match signal in response to the received data match signal, reading a corresponding portion of the second group of data according to the detected data mode, and receiving the video signal supplied by the video signal supply device. A single semiconductor for applying an image signal to a display device, characterized in that the image display device is adapted to receive a corresponding portion of the second group data by receiving the instruction of the program so that the image display device can display the image signal. chip. 2. The apparatus of claim 1, further comprising a communication channel between said drive means and said storage means for said drive means to read data of said first group, said second group of data and to access said program. Single semiconductor chip for applying image signal to display device. 3. The single semiconductor chip of claim 2, wherein the communication channel includes a data bus and an address bus. The method of claim 1, wherein the driving means includes a processing device for reading the first group data in response to the data request signal and for reading a corresponding portion of the second group data according to the sensed data mode. Characterized in that a single semiconductor chip for applying a video signal to the display device. 2. The video signal according to claim 1, wherein the driving means includes a first group data interface device for receiving the data request signal and transmitting the read first group data to the video signal supply device. A single semiconductor chip for applying to the display device. 6. The apparatus according to claim 5, wherein the driving means reads the first group data and the second group data and accesses the program and the communication channel between the driving means and the storage means, and the first group data interface device comprises: And a DDC communication channel between said first group data interface device and said storage means for accessing said first group data. 6. A communication channel according to claim 5, wherein said drive means reads said first group data and said second group data and accesses said program and said communication channel between said drive means and said storage means when said communication channel is in use. And further comprising a DDC communication channel between the first group data interface device and the storage means for the first group data interface device to access the first group data. Semiconductor chip. 6. A communication channel according to claim 5, wherein said drive means reads said second group data and accesses said program, and said first channel data interface device is connected to said first group data. And a DDC communication channel between said first group data interface device and said storage means for access. 9. The apparatus of claim 8, wherein the storage means comprises: a first storage unit for storing the first group data accessible by the first group data interface device through the DDC communication channel; and the driving means through the communication channel. And a second storage unit for storing both the program accessible by the second data and the second group data. The image display apparatus of claim 1, wherein the driving means receives the data match signal, detects a data mode of the data match signal, and enables the video display device to display the video signal. And a logic device for applying a corresponding portion of the second group of data to be received. The apparatus of claim 1, wherein the first driving means comprises an input / output device for communicating with the external user device such that the first group data, the second group data, and the program can be accessed by an external user device. A single semiconductor chip for applying a video signal to a display device comprising a. The apparatus of claim 1, wherein the driving means comprises a first group data interface device configured to read the first group data and transmit the first group data read to the image signal supply device in response to the data request signal. A single semiconductor chip for applying a video signal to a display device, characterized in that. The apparatus of claim 1, wherein the driving means reads the first group data in response to the data request signal, and transmits the first group data to the video signal supply device, and receives the first group data from the video signal supply device. And a first group data interface device for writing the first group data included in the data write signal into the storage means in response to a data write signal. The single semiconductor device for applying a video signal to a display device according to claim 1, wherein the driving means includes an input / output device for outputting an applied corresponding portion of the second group data to the image display device. chip. A semiconductor chip which communicates with a video signal transmission device and enables a video signal display device to display a video signal output from the video signal transmission device. Drive means and Storage means for storing all of the program accessible by the drive means, the first group data and the second group data, The driving means transmits the first group data from the storage means to the video signal transmission device in response to a data request signal applied thereto, and the data in response to a data match signal received from the video signal transmission device. Detects a data mode of a match signal, reads a corresponding portion of the second group data according to the detected data mode, and causes the video display device to receive an image signal output from the video signal transmission device according to the program; And applying a corresponding portion of the second group data to be received by the image display device so that the display can be displayed. A semiconductor chip which communicates with a video signal transmission device and enables a video signal display device to display a video signal output from the video signal transmission device. A first group data interface device; Logic processing unit; First storage means for storing first group data accessible by the first group data interface device; Second storage means for storing both a program accessible by said logic processing device and second group data, The first group data interface device reads the first group data in response to a data request signal applied to the first group data interface device and transmits the read first group data to an image signal transmission device. The logic processor detects a data mode of the data match signal in response to a data match signal received from the video signal transmission device, and reads a corresponding portion of the second group data according to the sensed data mode. And a corresponding portion of the second group of data to be received by the video display device so that the video display device can display the video signal output from the video signal transmission device under the instruction of. A single semiconductor chip for applying to the display device. 17. The apparatus of claim 16, wherein the logic processing device comprises a logic block and a processing device, the logic block receiving the data match signal and sensing the data mode such that the processing device is configured to generate the first data according to the sensed data mode. A corresponding portion of the second group data to be read by the image display apparatus so as to read a corresponding portion of the two group data and to enable the image display apparatus to display the image signal output from the image signal transmission apparatus. A single semiconductor chip for applying an image signal to a display device, characterized in that for applying. 17. The single-chip semiconductor of claim 16, wherein the second group data includes at least the second group data corresponding portion corresponding to the sensed data mode. 17. The video signal according to claim 16, wherein the second group data corresponding portion is applied by the video display control circuit in the video display device so that the video display device can display the video signal. A single semiconductor chip for applying to the display device. 17. The single semiconductor chip of claim 16, wherein the data request signal is provided by the video signal transmission device.

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