KR940004960Y1 - Super board - Google Patents

Abstract

No content.

Description

Super Board

1 is a block diagram of the present invention.

2 is an amplification circuit diagram of one of the circuit diagram of the present invention.

3 is a setup circuit diagram of the present invention.

4 is a key control circuit diagram of the present invention.

5 is another amplification circuit diagram of a circuit configuration of the present invention.

* Explanation of symbols for main parts of the drawings

1: external image signal 2: composite image signal

4: vertical synchronization signal 5: key signal

10: first amplifier circuit 12: setup circuit

16: second amplifier circuit 18: video monitor

20: synthesis monitor 24: third amplifier circuit

26: video synthesis monitor 28: key control circuit

30: address separation circuit 32: key delay circuit

36: switcher 38: D terminal

Q ₁ -Q ₉ : Transistor R ₁ -R ₂₄ : Resistance

VR ₁ -VR ₄ : Variable resistor C ₁ -C ₈ : Capacitor

VC ₁ : variable capacitor

The present invention configures the part where the image signal is processed by separate hardware and changes the program according to the purpose so that the image signal processed by the graphic board is superimposed on the external basic image signal to connect the output signal with an arbitrary PC for processing. It relates to a super board (image signal processing apparatus).

By using a conventional broadcasting character processing device or computer graphics, various Super Boards are built into the existing broadcasting device, which causes signal instability due to its own defects, and can be used only in specialized radio stations or broadcasting rooms. Not only are they difficult to handle and operate, but they are specialized and incompatible with PCs (personal computers).

Therefore, the present invention is designed to solve the above-mentioned shortcomings, and the computer graphic device, which is gradually increasing, is widely distributed to the general public, and the video conversion technology of broadcasting equipment, which has been dependent on the foreign country, is developed in Korea. The purpose of the present invention is to provide a super board that can get the effect of eliminating the price drop, import substitution effect, and after-sales service.

In addition, by controlling the central processing unit of the Pc by simple operation, it is possible to connect the embedded board compatible with the Pc to any PC while compensating for the instability of the signal generated by the embedded board itself and meeting the signal specifications of the broadcasting equipment. The purpose of the present invention is to provide a superboard that can be easily processed through video by outputting text and graphics through other PC accessories or output devices.

Hereinafter, with reference to the accompanying drawings the present invention will be described in detail.

As shown in FIG. 1, in the present invention, the image signal 1 input from the outside is applied to the first amplifier circuit 10, one side of the input corrected output is applied to the video monitor 18, and the other side is super. Applied to a super impose circuit 14.

One side of the composite image signal 2 is applied to the third amplification circuit 24 and output to the video synthesis monitor 26, and the other side is applied to the set up circuit 12, and the output thereof is a superimposed circuit ( 14). The key control circuit 28 receives a vertical synchronizing signal 4 and a key signal 5 output through the address separation circuit 30, and the output of the key control circuit 28 receives a key delay. Is applied to the circuit 32, and one side of the output of the key delay circuit 32 is applied to the superimposition circuit 14 so that the first amplification circuit 10 and the setup circuit 12 in the superimposition circuit 14 are applied. ) And a signal synthesized according to the signal input from the key delay circuit 32 to the second amplification circuit 16 to be output to the image signal synthesis monitor 20, and the other of the output of the key delay circuit 32. The side is applied to the fourth amplifier circuit 34, the circuit is configured to be output to the switcher (36) of the other broadcast equipment.

Referring to the operation of the present invention configured as described above, the external image signal 1 is amplified by the first amplification circuit 10, and then one side of the external video monitor (Vdeo Monitor) or broadcasting equipment and graphics board ( It is branched to lock the Graphic Bord, and the other side is input to the Super Impose 14 circuit to be used as a background image in the Super Impose circuit 14.

One side of the composite image signal 2 such as text, graphics, and other video signals outputted from the composite Mars output terminal of the graphic board is input to the set-up circuit 12, and the set-up In the circuit 12, the DC black level with the external reference composite image signal is adjusted, and superimposed to superimpose on the externally input background screen (external image signal) 1 Input to Impose) circuit.

Further, the synthesized signal is input to the other third amplification circuit 24, amplified and corrected, and then output to the composite image signal output terminal for viewing on the video synthesis monitor 26.

As described above, the external image signal 1 and the composite image signal 2 input to the super impose circuit 14 are separated from the address separation circuit 30 and the key in the super impose circuit. Superimposed by a key signal controlled by the control circuit 28 is input to the second amplifier circuit 16, and then amplified and corrected by the second amplifier circuit 16 and output to the image signal synthesis monitor 20 do.

At this time, the address separation circuit 30 and the key control circuit 28 can adjust the signal on the super impose circuit 14 by turning the key signal ON / OFF. The other side is corrected and amplified by the fourth amplification circuit 34 and output to the switch 36 of the other broadcasting equipment.

As shown in FIG. 2, the image signal 1 is externally provided with transistors Q ₁ -Q ₅ , resistors R ₁ -R ₁₆ , variable resistors VR _1- VR ₂ , and capacitor C _1. C ₆ ), the variable capacitor VR ₁ connected to the base of the capacitor C ₁ and the transistor Q _{1 of} the first amplifier circuit 10 connected by the variable capacitor VC ₁ and the zener diode ZD. of the set-up to the voltage adjustment is used as a base signal of the transistor (Q ₂₎ Vs, the set-up image signal while being amplified by the transistor (Q ₂₎ and (Q ₃₎ a variable resistor (VR ₁₎ and a variable capacitor ( The gain is adjusted by VC ₁ ) so that one side is output to the external video monitor 18 through the transistor Q ₄ , the resistors R ₁₄ , and R ₁₅ , and the other side is input to the superimpose circuit 14. .

In addition, a Zener diode, which is a constant voltage diode, is connected to the collector of transistor Q ₄ and the base of transistor Q ₅ to stabilize the signal.

As shown in FIG. 3, the composite image signal 2 is a character, graphic, or other image signal such as a transistor Q ₆ -Q ₈ , a resistor R ₁₇ -R ₂₁ , a variable resistor VR ₃ , a capacitor. When inputted to the setup circuit 12 connected to (C ₇ ), the base input of the transistor Q ₇ is adjusted by variably adjusting the collector voltage Vcc and the base voltage of the transistor Q ₆ with the variable resistor VR ₃ . Therefore, the DC black level of the two signals is matched by the control of the variable resistor VR ₃ based on the external reference synthesized image signal 2 so that the mixed signal minimized the noise is one of the super impose circuits. And the other side is applied to the third amplifier circuit 24 composed of the circuit of the same element as the first amplifier circuit 10 and output to the outside through the video synthesis monitor 26.

As shown in FIG. 4, the key control circuit 28 composed of two clock D flip-flops enables an address synchronizing circuit 4 to be compatible with the vertical synchronization signal 4 and other Pc programs, and to separate the control signals. When the key signal 5 outputted through 30) is input, the input key signal 5 converts the clock of the D flip-flop into "L" and "H" and the D terminal of the D flip-flop according to the clock signal. The input level of (38) is switched to adjust the input and output of the key signal. The adjusted key signal turns the key signal of the super impose circuit ON / OFF so that the input and output of the super impose circuit can be freely converted.

When the key signal output from the key control circuit 28 is input to the key delay circuit 32 composed of the trigger inverter circuit, the shadow direction of the key signal output from the key control circuit according to each broadcasting equipment is provided. Since these are different from each other, the shadow direction of the key signal is adjusted to increase mutual compatibility with each broadcasting equipment.

One side of the key signal adjusted and output by the key delay circuit is connected to a transistor Q ₉ , a resistor R _22- R ₂₄ , a variable resistor VR ₄ , and a capacitor C ₈ . Input to the fourth amplifier circuit 34, corrected and amplified, and then output to a switcher of another broadcasting device, and the other side is applied to the super-impedance circuit 14.

Therefore, in the superimposition circuit 14, the black burst image signal 1 input through the first amplifier circuit 10 and the composite image signal 2 input through the setup circuit 12 are keyed. Superimposed by ON / OFF of the key signal input from the delay circuit 32, and also can adjust the shadow of the character or graphic while switching the key signal delay jumper (super) One board can perform SEG DSK function. The second amplifier circuit 16 is corrected and amplified by the same second amplifier circuit 16 as that of the first amplifier circuit 10 and output to the image signal synthesis monitor 20.

In addition, when the key signal is turned on / off through the address separation circuit 30 and the key control circuit 28, the superimposition circuit 14 causes the two input signals (1) and (2). Can be superimposed or separated to output the character, graphic or other image signal through the superimposition circuit 14 as necessary by using a key signal 5 in addition to the external reference synthesized image signal 2. In addition to being able to overlap or separate the whole, as well as easy to connect to other PCs by using the address separation circuit 30, it is possible to increase the compatibility of the device and the mass production of the device to facilitate the transaction demander There is an effect of improving the reliability of the editing operation and the quality of synthesizing and separating image signals, characters or graphics signals, such as can be purchased and used, and the operation is easy to perform the recording process.

Claims (1)

In an apparatus for superimposing or separating a character or graphic signal on an image signal, the image signal 1 is applied to the first amplifier circuit 10 so that one side of the input corrected output is applied to the video monitor 18 and the other side is super. Applied to the impose circuit 14, one side of the composite image signal 2 is applied to the third amplification circuit 24 and output to the video synthesis monitor 26, and the other side is applied to the setup circuit 12 and its output. The superimposition circuit 14 is inputted, and the key control circuit 28 is connected to the key control circuit 28 so that the key signal 5 output through the vertical synchronizing signal 4 and the address separation circuit 30 is input. An output of the (28) is input to the key delay circuit 32, one side of the output of the key delay circuit 32 is applied to the super-impedance circuit 18, the first amplification in the super-impedance circuit 14 The second signal is synthesized according to the signal input from the circuit 10, the setup circuit 12, and the key delay circuit 32. Output to the circuit 16 to be output to the image signal synthesis monitor 20, and the other side of the output of the key delay circuit 32 is applied to the fourth amplification circuit 34 to be input to the switcher 36 of the other broadcasting equipment. Super board, characterized in that the circuit is configured.