CN1774050A - Circuit and method for making software staging to television set - Google Patents
Circuit and method for making software staging to television set Download PDFInfo
- Publication number
- CN1774050A CN1774050A CNA2005100219274A CN200510021927A CN1774050A CN 1774050 A CN1774050 A CN 1774050A CN A2005100219274 A CNA2005100219274 A CN A2005100219274A CN 200510021927 A CN200510021927 A CN 200510021927A CN 1774050 A CN1774050 A CN 1774050A
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- television set
- circuit
- interface
- software upgrading
- control circuit
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Abstract
A circuit for updating software of TV set consists of switch control circuit (SCL) set between universal external-set interface of TV set and EEPROM with its input end being used to receive level control signal outputted from TV set CPU and its output end being equipped the first position and the second position. It features that SCC is connected through to bus to let SCL and SDA high-low level signal used for updating software enter CPU and EEPROM when the first position is on and SCC is connected through to TV set audio/video processing circuit to let audio/video signal directly enter said processing circuit when the second position is on.
Description
[technical field]
The invention relates to a kind of circuit and method of television set being carried out software upgrading.
[background technology]
Television set is carried out software upgrading, and usual way is to open television rear cover, and the interface that is used to upgrade is inserted in four spring hole scokets that are used for software upgrading that set in advance on the machine core board between CPU and EEPROM, and input signal carries out software upgrading; Some high-end TVs are the idle port by the VGA interface then, adds some circuit and is connected to EEPROM and carries out software upgrading.But there is following shortcoming in above-mentioned two kinds of methods: preceding a kind of method need be opened television rear cover, and inconvenient operation is lost time, and does not also meet the development trend of television set simple operations; A kind of method in back can only be carried out software upgrading to the colour TV of band VGA interface, then can not carry out software upgrading to the ordinary colour TV set of recoverable amount maximum, and versatility is poor.
[summary of the invention]
The object of the present invention is to provide the circuit and the method for the simple and easy to operate TV set software upgrade of a kind of software upgrading.
Another object of the present invention is to provide a kind of circuit and method of TV set software upgrade of highly versatile.
The object of the present invention is achieved like this: this a kind of circuit that television set is carried out software upgrading, comprise an ON-OFF control circuit that is located between general external interface of television set and the EEPROM, the input of this ON-OFF control circuit receives the level controling signal of television set CPU output, its output has the primary importance and the second place, when primary importance, this ON-OFF control circuit and bus conducting are used for the SCL of software upgrading and the high-low level signal of SDA and can enter CPU and EEPROM; When the second place, ON-OFF control circuit and bus disconnect and with the audio frequency and video treatment circuit conducting of television set, audio-video signal can directly enter the audio frequency and video treatment circuit of television set.
Described general external interface is AV interface or VGA interface or YcbCr interface, and the audio frequency and video treatment circuit is corresponding AV or VGA or YcbCr treatment circuit.
Described ON-OFF control circuit is a relay.
A kind of television set is carried out software upgrade method, it is provided with ON-OFF control circuit between the general external interface of television set and EEPROM, also comprise the steps:
A) at the general external interface Input Software upgrading signal of television set;
B) send high level signal by remote controller control television set CPU, make ON-OFF control circuit and bus conducting, the software upgrading signal enters CPU and EEPROM upgrades;
C) after software upgrading finished, CPU sent low level signal by remote controller control television set, make the disconnection of ON-OFF control circuit and bus and with the conducting of audio frequency and video treatment circuit.
Compared with prior art, the present invention has following advantage: 1) utilize the general external interface of television set (as AV, VGA, YCbCr interface etc.) to carry out software upgrading, only need at external port access software upgrading signal, by remote controller key control, just can carry out software upgrading to television set, greatly reduce the difficulty of software upgrading in actual applications, handled easily, realize simply, and the present invention need not increase other special purpose interface on television set, so can effectively reduce cost; 2) carry out software upgrading by the AV interface that utilizes existing general television set and high-end television sets all to have, make this circuit and method have very strong versatility.
[description of drawings]
Fig. 1 is a schematic block circuit diagram of the present invention.
Fig. 2 is a flow chart of the present invention.
[embodiment]
See also Fig. 1, a kind of circuit that television set is carried out software upgrading of the present invention comprises an ON-OFF control circuit 1 that is located between general external interface of television set and the EEPROM, the input of this ON-OFF control circuit 1 receives the level controling signal of television set CPU output, its output has the primary importance and the second place, when primary importance, this ON-OFF control circuit and bus conducting are used for the SCL of software upgrading and the high-low level signal of SDA and can enter CPU and EEPROM; When the second place, ON-OFF control circuit and bus disconnect and with the AV treatment circuit conducting of television set, the AV signal can directly enter the AV treatment circuit of television set.In the present embodiment, this general external interface is existing AV interface; This ON-OFF control circuit is an existing relay; When CPU send+during the ON high level voltage signal of 5V, relay deflect and with the bus conducting, when CPU sent OFF low level voltage signal, relay contact reset to the home position, bus run was cut off and the AV passage is switched on.
The course of work of the present invention is as follows: when 1) TV being carried out software upgrading, send ON or OFF signal with the remote controller Controlled CPU, relay is connected I under the ON control signal
2The C bus, relay is connected the AV treatment circuit under the OFF control signal, at AV interface Input Software upgrading signal; 2) with the remote controller Controlled CPU send+5V high level voltage signal is with control relay, relay contact deflects, its contact is connected to 2-1,2-2, make relay and bus conducting and form bus run, be used for the SCL of software upgrading and the high-low level signal of SDA and enter CPU and EEPROM, realize that the software upgrading of television set is handled; 3) software upgrading finishes, and sends OFF low level voltage signal with the remote controller Controlled CPU, and relay contact returns to the home position, the contact attaches to 1-1,1-2, bus run is cut off, relay and the conducting of AV treatment circuit and form the AV passage, and the AV signal can directly enter the AV treatment circuit.
See also Fig. 2, the present invention is a kind of to be carried out software upgrade method to television set and comprises the steps: a) at the AV of television set interface Input Software upgrading signal; B) send high level signal by remote controller control television set CPU and come control relay, relay is deflected and with the bus conducting, the software upgrading signal can enter CPU and EEPROM; C) after software upgrading finishes, send low level by remote controller control television set CPU relay resetted, relay with the bus disconnection with the conducting of AV treatment circuit, the AV signal can directly enter the AV treatment circuit of television set.
Among the present invention, this general external interface also can be television set general-purpose interfaces such as VGA, YCbCr; ON-OFF control circuit can be switch element or existing switching circuits such as existing switching tube.
The present invention utilizes the general external interface of television set (as AV, VGA, YCbCr interface etc.) to carry out software upgrading, only need at external port access software upgrading signal, control by remote controller key, just can carry out software upgrading to television set, greatly reduce the difficulty of software upgrading in actual applications, handled easily is realized simple, and the present invention need not increase other special purpose interface on television set, so can effectively reduce cost.
Claims (6)
1. circuit that television set is carried out software upgrading, it is characterized in that: comprise an ON-OFF control circuit that is located between general external interface of television set and the EEPROM, the input of this ON-OFF control circuit receives the level controling signal of television set CPU output, its output has the primary importance and the second place, when primary importance, this ON-OFF control circuit and bus conducting are used for the SCL of software upgrading and the high-low level signal of SDA and can enter CPU and EEPROM; When the second place, ON-OFF control circuit and bus disconnect and with the audio frequency and video treatment circuit conducting of television set, audio-video signal can directly enter the audio frequency and video treatment circuit of television set.
2. a kind of circuit that television set is carried out software upgrading as claimed in claim 1 is characterized in that: described general external interface is AV interface or VGA interface or YcbCr interface, and the audio frequency and video treatment circuit is corresponding AV or VGA or YcbCr treatment circuit.
3. a kind of circuit that television set is carried out software upgrading as claimed in claim 1 is characterized in that: described ON-OFF control circuit is a relay.
4. one kind is carried out software upgrade method to television set, it is characterized in that: between the general external interface of television set and EEPROM ON-OFF control circuit is set, also comprises the steps:
A) at the general external interface Input Software upgrading signal of television set;
B) send high level signal by remote controller control television set CPU, make ON-OFF control circuit and bus conducting, the software upgrading signal enters CPU and EEPROM upgrades;
C) after software upgrading finished, CPU sent low level signal by remote controller control television set, make the disconnection of ON-OFF control circuit and bus and with the conducting of audio frequency and video treatment circuit.
5. as claimed in claim 4ly a kind of television set is carried out software upgrade method, it is characterized in that: described ON-OFF control circuit is a relay.
6. as claimed in claim 4ly a kind of television set is carried out software upgrade method, it is characterized in that: described general external interface is AV interface or VGA interface or YcbCr interface, and the audio frequency and video treatment circuit is corresponding AV or VGA or YcbCr treatment circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100219274A CN1774050A (en) | 2005-10-18 | 2005-10-18 | Circuit and method for making software staging to television set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100219274A CN1774050A (en) | 2005-10-18 | 2005-10-18 | Circuit and method for making software staging to television set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1774050A true CN1774050A (en) | 2006-05-17 |
Family
ID=36760782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100219274A Pending CN1774050A (en) | 2005-10-18 | 2005-10-18 | Circuit and method for making software staging to television set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1774050A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103813207A (en) * | 2014-02-27 | 2014-05-21 | 联想(北京)有限公司 | Information processing method, upgrade device and upgrade card |
-
2005
- 2005-10-18 CN CNA2005100219274A patent/CN1774050A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103813207A (en) * | 2014-02-27 | 2014-05-21 | 联想(北京)有限公司 | Information processing method, upgrade device and upgrade card |
| CN103813207B (en) * | 2014-02-27 | 2017-01-04 | 联想(北京)有限公司 | A kind of information processing method, update device and upgrade card |
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