CN203691521U - Television with double buttons - Google Patents
Television with double buttons Download PDFInfo
- Publication number
- CN203691521U CN203691521U CN201420065536.7U CN201420065536U CN203691521U CN 203691521 U CN203691521 U CN 203691521U CN 201420065536 U CN201420065536 U CN 201420065536U CN 203691521 U CN203691521 U CN 203691521U
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- resistance
- control chip
- television
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- master control
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Abstract
The utility model discloses a television with double buttons. The television comprises a television master control chip, an A/D conversion unit, a power supply unit, a display screen and a button input unit. An input terminal of the television master control chip is connected with an output terminal of the A/D conversion unit and the power supply unit. An output terminal of the television master control chip is connected with the display screen. An input terminal of the A/D conversion unit is connected with the button input unit. By using the above structure, through carrying out operation on a first switch button and a second switch button, a voltage signal is generated; the A/D conversion unit converts the acquired voltage signal into a digital signal; then different codes are generated according to the digital signal and times of operating the buttons and the codes are transmitted to the television master control chip; the television master control chip sets and executes different functions according to the different codes. Under the condition that the television can realize various kinds of functions, the number of the buttons is reduced to two and a soldering tin material needed by soldering is greatly reduced so that production cost is reduced and manpower and man-hour are saved.
Description
Technical field
The utility model relates to field of television, relates in particular to a kind of TV with two buttons.
Background technology
Along with the raising of people's living standard, TV becomes one of electrical equipment of family's indispensability already.At present, television set generally adopts 6 or 7 buttons, and even 10 buttons are used for regulating control TV switch and menu.Because number of keys is many, the soldering tin material using in production process is many, and production cost is high, labor intensive man-hour.
Summary of the invention
The purpose of this utility model is to provide the TV with two buttons that a kind of production cost is low, save manpower man-hour.
For achieving the above object, the utility model by the following technical solutions: with the TV of two buttons, it comprises TV main control chip, A/D converting unit, power supply unit, display screen and key-press input unit; The input of described TV main control chip is connected with output and the power supply unit of A/D converting unit respectively, and the output of TV main control chip is connected with display screen, and the input of A/D converting unit is connected with key-press input unit; Wherein, described key-press input unit comprises the first switch key, second switch button, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the first electric capacity and the second electric capacity, the input of described A/D converting unit is connected with one end of the 3rd resistance and the 4th resistance respectively, the other end of the 3rd resistance and the 4th resistance is all connected with reference power supply, simultaneously, the 3rd resistance one end is connected with first resistance one end, the first resistance other end is connected with second switch button, ground connection after second switch button and the first Capacitance parallel connection; The 4th resistance one end is connected with second resistance one end, and the second resistance other end is connected with the first switch key, ground connection after the first switch key and the second Capacitance parallel connection.
The utility model adopts above structure, produce voltage signal by the operation to the first switch key and second switch button, A/D converting unit converts the voltage signal of acquisition to digital signal, generate different codes according to digital signal and which time operation push-button again, and code is sent to TV main control chip, TV main control chip is according to different code settings and carry out different functions.Guaranteeing that TV can realize under the prerequisite of various functions, number of keys is reduced to two, reduce in a large number and welded required soldering tin material, and then reduced production costs, save manpower man-hour.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the functional block diagram of the utility model with the TV of two buttons;
Fig. 2 is the circuit diagram of the utility model with the TV of two buttons.
Embodiment
As shown in Figure 1 or 2, the utility model is with the TV of two buttons, and it comprises TV main control chip 1, A/D converting unit 2, power supply unit 3, display screen 4 and key-press input unit 5, the input of described TV main control chip 1 is connected with output and the power supply unit 3 of A/D converting unit 2 respectively, and the output of TV main control chip 1 is connected with display screen 4, and the input of A/D converting unit 2 is connected with key-press input unit 5, wherein, described key-press input unit 5 comprises the first switch key SW1, second switch button SW2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the first capacitor C 1 and the second capacitor C 2, the input of described A/D converting unit 2 is connected with one end of the 3rd resistance R 3 and the 4th resistance R 4 respectively, the other end of the 3rd resistance R 3 and the 4th resistance R 4 is all connected with reference power supply 3.3V, simultaneously, the 3rd resistance R 3 one end are connected with first resistance R 1 one end, first resistance R 1 other end is connected with second switch button SW2, ground connection after second switch button SW2 is in parallel with the first capacitor C 1, the 4th resistance R 4 one end are connected with second resistance R 2 one end, and second resistance R 2 other ends are connected with the first switch key SW1, ground connection after the first switch key SW1 is in parallel with the second capacitor C 2.
The utility model adopts above structure, and the first resistance R 1, the second resistance R 2 play dividing potential drop effect in key-press input unit, the 3rd resistance R 3, the 4th resistance R 4 in key-press input unit as pull-up resistor.The effect that the first capacitor C 1 and 2 of the second capacitor C play ground protection and discharge and recharge in the first switch key SW1 or the SW2 conducting of second switch button and disconnection process; appropriateness keeps key switch required time of delay, also can be understood as double and plays the key switch effect of required time of delay that keeps in pressing the first switch key SW1 or second switch button SW2 process.
While pressing second switch button SW2, the first resistance R 1, the branch road conducting at the 3rd resistance R 3 and second switch button SW2 place, the second resistance R 2, the not conducting of branch road at the 4th resistance R 4 and the first switch key SW1 place, A/D converting unit obtains the voltage signal at the first resistance R 1 and second switch button SW2 two ends and converts digital signal to, then pressing second switch button SW2 according to this is which time operation and digital signal generate different codes, code is sent to after TV main control chip 1, TV main control chip 1 arranges different code correspondence and realizes different functions.For example, press for the first time second switch button SW2, carry out start operation; After a bit of time of interval, while again pressing second switch button SW2, carry out and recall menu operation; In subsequent operation, second switch button SW2 of individual palpation, carries out " to the right " operation.In addition, pin second switch button SW2 and reach more than 3 seconds, carry out power-off operation.
During continuously by twice second switch button SW2, the double acquisition voltage signal of A/D converting unit 2 also converts digital signal to, A/D converting unit 2 generates corresponding code according to digital signal, and TV main control chip 1 receives after code, carries out " left " operation.
When a first switch key SW1 of individual palpation, the branch road conducting at the second resistance R 2, the 4th resistance R 4 and the first switch key SW1 place, the not conducting of branch road at the first resistance R 1, the 3rd resistance R 3 and second switch button SW2 place, A/D converting unit 2 obtains the voltage signal at the second resistance R 2 and the first switch key SW1 two ends and converts digital signal to, then pressing the first switch key SW1 according to digital signal and this is which time operation generates corresponding code, code is sent to after TV main control chip 1, carries out " downwards " operation.
During continuously by twice the first switch key SW1, twice of the branch road conducting at the second resistance R 2, the 4th resistance R 4 and the first switch key SW1 place, the double acquisition voltage signal of A/D converting unit 2 also converts thereof into digital signal, generate corresponding code according to digital signal, code is sent to after TV main control chip 1, carries out " upwards " operation.
If while pressing the first switch key SW1 and second switch button SW2 simultaneously, the branch road conducting at the second resistance R 2, the 4th resistance R 4 and the first switch key SW1 place, the also conducting of branch road at the first resistance R 1, the 3rd resistance R 3 and second switch button SW2 place, A/D converting unit 2 is obtained two-way voltage signal and is converted digital signal to, then generate corresponding code according to digital signal, code is sent to after TV main control chip 1, realizes " determining " function.If pin the first switch key SW1 and second switch button SW2 more than 3 seconds simultaneously, carry out " exiting/return page " operation.
Claims (1)
1. with the TV of two buttons, it is characterized in that: it comprises TV main control chip, A/D converting unit, power supply unit, display screen and key-press input unit; The input of described TV main control chip is connected with output and the power supply unit of A/D converting unit respectively, and the output of TV main control chip is connected with display screen, and the input of A/D converting unit is connected with key-press input unit; Wherein, described key-press input unit comprises the first switch key, second switch button, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the first electric capacity and the second electric capacity, the input of described A/D converting unit is connected with one end of the 3rd resistance and the 4th resistance respectively, the other end of the 3rd resistance and the 4th resistance is all connected with reference power supply, simultaneously, the 3rd resistance one end is connected with first resistance one end, the first resistance other end is connected with second switch button, ground connection after second switch button and the first Capacitance parallel connection; The 4th resistance one end is connected with second resistance one end, and the second resistance other end is connected with the first switch key, ground connection after the first switch key and the second Capacitance parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065536.7U CN203691521U (en) | 2014-02-14 | 2014-02-14 | Television with double buttons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065536.7U CN203691521U (en) | 2014-02-14 | 2014-02-14 | Television with double buttons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203691521U true CN203691521U (en) | 2014-07-02 |
Family
ID=51013370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420065536.7U Expired - Fee Related CN203691521U (en) | 2014-02-14 | 2014-02-14 | Television with double buttons |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203691521U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184994A1 (en) * | 2020-03-18 | 2021-09-23 | 惠州视维新技术有限公司 | Control method for display terminal device, display terminal device, and non-volatile storage medium |
-
2014
- 2014-02-14 CN CN201420065536.7U patent/CN203691521U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184994A1 (en) * | 2020-03-18 | 2021-09-23 | 惠州视维新技术有限公司 | Control method for display terminal device, display terminal device, and non-volatile storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20170214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |