tv tuner for pc

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It strikes me as a fine project for your degree, although I don't think you have grasped the complexities of the task? - although your tutor probably has, which is why he's happy about it.
 

It sounds like you're confusing 'tuner' with 'TV tuner', a 'tuner' is a component, just like a transistor or IC, and they are not expected to collect sand from the beach and make their own semiconductors (hopefully!). The 'tuner' is only one of the components used in a 'TV tuner', and a digitally tuned one (which is essential for this project) is controlled via an I2C bus.

This will need to be controlled via a micro-controller in the finished project, but for testing and design purposes it's easier to control it via an I2C interface from a PC. Once that's done and all working, you can then build a micro-controller circuit to do the same job.

There's an 'easy' I2C interface at the bottom of the PonyProg page .
 
can anyone here give me an exact schematic diagram of this tuner? coz i need to evaluate if the components are available in our country
 
ervinpm said:
can anyone here give me an exact schematic diagram of this tuner? coz i need to evaluate if the components are available in our country
Click to expand...

You're looking at it the wrong way round, you need to find what tuners are available where you are (and, more importantly, that you can get datasheets for!).
 
hmm... i'm quite very confused, about the IIC bus? how does it work how could i set parameters and calibrate the tuner with it?
 
ervinpm said:
hmm... i'm quite very confused, about the IIC bus? how does it work how could i set parameters and calibrate the tuner with it?
Click to expand...

If you don't even know what an IIC (or I2C) bus is, you're going to struggle with this project!.

It's a two wire bus for communicating between IC's, invented by Philips, and commonly used in TV's etc. The tuning IC in the tuner module will be setup via this bus, basically by setting it's division ratio - but you need the datasheet to know what you are doing. Depending on what IF and demodulation system you build, those IC's may also be connected to the bus, and need to be controlled as well. Each IC has a specific address.
 
You have at least a couple of major problems to tackle with your project. First is get the information to even begin to desgn the "TV tuner for PC" circuit. The second major problem is to obtain the parts to build this circuit.

With the limited time you have, I would suggest the shortcut technique that is often practiced in the industry. It's called "reverse engineering". You can purchase a TV tuner or two if you can afford it. Take them apart and research on the parts that were used to build it. Google the part numbers you get and often they will lead you to the manufaturer's sites which have suggested schematics and application notes.

Use this information and the parts you are able to salvage to build a tuner of your own. You might improve on the design in the process.
 
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