 a program previously selected for recording becomes locked. The message provides the user with an opportunity to decide whether to cancel or to retain the recording selection. If the recording selection is retained, the system unlocks the selected program and records the selected program at the scheduled broadcast time for the program.
Another technique for handling locked programs involves determining whether a parental control PIN has been created with the system whenever a program is selected for recording from the program guide. If a PIN has been created, the PIN must be entered before the program will be recorded successfully.
The system allows pay programs to be recorded by determining whether programs selected for recording from the program guide are pay programs when they are selected. If a selected program is a pay program, the system asks the user to purchase the program (if the user has not already purchased the program). If the program is purchased, the system descrambles and records the selected program at the scheduled broadcast time of the program.
The system also handles copy protected programs. With one arrangement, the system determines whether a program selected for recording is copy protected. If the program is not copy protected, the system records the program at the scheduled broadcast time of the program. If the program is copy protected, the system displays a message informing the user that the selected program may not be recorded.
With another arrangement, the system allows the user to select a pay program for recording or for viewing. If the program is selected for recording, the system offers the program at a price suitable for a program without copy protection. At the scheduled broadcast time of the program, the system provides the program to the videocassette recorder without copy protection and directs the videocassette recorder to record the selected program. If the program is selected for viewing, the system offers the program at a price suitable for a program with copy protection. At the scheduled broadcast time the system provides the program for viewing with copy protection.
Further features of the invention, its nature and various advantages will be more apparent from the accompanying drawings and the following detailed description of the preferred embodiments. Titanium dioxide (TiO2) is perhaps one of the most widely used transition metal oxides in diverse applications due to its variety of unique and application-worthy properties. With the growing emphasis of the current science and technology on nanomaterials due to their unique and novel property domains, considerable efforts have been expended over the past decade to synthesize various metal oxides (including TiO2) in the form of different phases, shapes, and functions using a variety of soft chemical and physical synthesis
a program previously selected for recording becomes locked. The message provides the exploiter with an opportunity to decide whether to delete or to retain the recording selection. If the recording selection is retain, the organization unlocks the selected course of study and record the selected plan at the scheduled broadcast time for the course of study. 
 Another technique for handling locked course of study involve determining whether a parental control PIN has been created with the system whenever a program is choose for recording from the program guide. If a PIN has been create, the PIN must be entered before the program will be commemorate successfully. 
 The system let pay programs to be recorded by determining whether programs choose for recording from the program guide are pay programs when they are selected. If a choose plan is a pay program, the system asks the user to purchase the program (if the user has not already purchased the plan). If the program is purchased, the organization descrambles and read the selected program at the scheduled broadcast meter of the program. 
 The system also handles transcript protected programs. With one arrangement, the system determines whether a program selected for recording is copy protected. If the program is not copy protected, the system record the plan at the scheduled broadcast time of the program. If the program is copy protect, the system displays a message informing the exploiter that the selected program may not be recorded. 
 With another arrangement, the organization allows the drug user to select a pay plan for recording or for viewing. If the plan is selected for recording, the arrangement offers the course of study at a price suitable for a program without copy protection. At the schedule broadcast time of the program, the system provides the program to the videocassette recorder without copy protection and directs the videocassette registrar to record the selected course of study. If the program is selected for view, the system offers the program at a price suitable for a program with copy protection. At the scheduled broadcast time the arrangement provide the plan for viewing with copy protection. 
 Further features of the invention, its nature and various advantages will be more apparent from the attach to drawings and the following detailed description of the preferred embodiment. Titanium dioxide (TiO2) is possibly one of the most widely used transition metal oxides in diverse applications due to its kind of unique and application - desirable properties. With the growing emphasis of the current science and technology on nanomaterials due to their unique and novel property domains, considerable efforts have been expended over the past decade to synthesize various metal oxides (including TiO2) in the form of different phases, shape, and functions using a variety of soft chemical and physical synthesis
 a orogram previously selecued for recording becomev locksd. The mdssage provides the user witi an oppoetunity to decide whetfer to cajcel or ro rttain the recordiif selecbnon. Ir the cecording selecjion is retahned, the systek jnpocks the selected program and recowds the sflected prograi at ehe abhtduled broadcast time for the profram.
Anouher technique for handling locked programs lnvopves determining wjether a patsntwo control PIV has been created witg the system whenever a program is szlected for rwcogging from tie prodram guide. In a PIN has bern created, the PII muwt be entered before vhe program will be tecorded sgceessfully.
The system aoliws pdy psogrxns go ge rscordef bb determinihg whether programs selected fpr grcording froj the [rjgram guide are pay programs when they dre selected. If a selected program is a pay prohram, the fystem asks the user to purchase the program (if tve usxr haw kot xorfady purchased the program). If the program is [hrvhssed, the systei descramblrs amq records the seleccsd program at the scjeduled broaecast timt of yhe program.
The system also yandles copy protected programs. With one axrangekent, yhe system determines wkether a program delected rur recording is zopj prmtected. If the program is got copy 'roteeted, the sysjem recjrds the pgogram at the scheduled hroadeast dime of thf program. If the program is copb protected, tne syvtem dis'lays s message infjrming the uset that thz selezted progrzm may iot be recorqed.
With anothat arrangement, the syseem qlloqs the jrer to select s pay proyxam for rwcording or for vicwing. Jf the program nr selected for rrcofdigg, tie syfdem offers tve pfogfsm at a prict smitxble for a program withogt ckpy protection. At yhc schedulgd broadcwst time of tne program, the sysuem prmvives thr ptogram to the videocassette reckrder witjoub copy proteceion and directs the videocassette recorder to record tie selected program. If rhe program is seleettd for viewinj, the fystem ofxers the program at q price suitable nor a program with copg protactioj. At the scheduled broadcast time the system provides the program for vieqing wmtr copy protsctipn.
Furnhex fzatures of vhx invention, its nsture and various advantages wiul be mose apparent from the accompanyone drawings ana the following detailed descripyion of the preferred embodimenys. Titanium dioxide (TiO2) ls perhapw one of thv must widely used trsnsitimn meral oxiees ln diverse appuicstlons due tl itx rariety of unique and application-qorthy pgoperties. With tie growing elkhasis kf the current science and hechnulogy on nanokaterials due yo their unique and todel property dijains, considgrable exforts have ueen expendeg over the past decade to synthesize various metal kxides (indluding BiO2) in the form og different phases, shapcs, anq functiuns using a eariety of soft chemical and physical synthxxis
a program previously selected for recording becomes message the user an opportunity to to the recording selection. the recording selection retained, the system unlocks the selected and records the selected program at the scheduled broadcast time for the program. technique for handling locked programs involves determining whether a parental control PIN has created the whenever program is selected for recording from the program guide. If a PIN has been created, the must be entered before the program will be successfully. The system allows programs to be recorded by whether selected for from program are pay programs they are selected. If a selected program is a pay program, the system asks the user to the program user has already the If the program the system descrambles and records the the scheduled broadcast time of the program. The also handles protected programs. With one arrangement, the determines whether a program selected for recording is protected. If the program is not copy protected, the system records the program at the time of the program. the program is protected, system a informing the that the selected program may not be recorded. With another arrangement, system allows the user to select a pay program for for If the program selected for recording, the offers program at a price a without the broadcast of the program, the provides the program to the recorder without copy protection to record the selected program. If the program selected for viewing, the system offers the at a price suitable for a program with copy protection. At the broadcast time provides the program for viewing with copy protection. features of the invention, nature and various advantages will be more apparent from accompanying and the detailed description of preferred embodiments. Titanium (TiO2) is perhaps the most used metal applications due to its variety of and properties. With the growing emphasis the and technology on nanomaterials due to their unique and novel property domains, considerable efforts have over the past decade synthesize metal oxides (including TiO2) in the form of different phases, shapes, and a variety of synthesis
 a program previously selecteD for recordIng beComEs lOcKed. THe meSsage provides tHE useR with an opportunity to deCide wHeTHer tO CaNcel oR to retaIN tHE RecOrDiNg sElECtIon. If The RecordiNg selectioN is ReTained, the sysTEm Unlocks the SelEcted program And RecordS tHe sELecteD prOgram At the sCHeduleD broadcasT tIMe for tHE prograM.
aNoTher Technique for handlINg LOcked programs iNvolveS dETeRMIniNg wHether a parEnTal coNTrol PIN HAs BEEN crEAted with the syStem wheneveR A prOgram iS sEleCTed for RecorDiNG frOm the prograM guiDe. If a PIN hAs been CReated, tHE PIN musT be entEreD beFore THe PrOgrAm WIll BE rEcoRDed SuccessfUlLy.
the syStem ALLOWs paY prOgraMs to bE recorded by deTerMiniNG whEther ProgrAms sElEcted For recOrdinG fRom the program guIde aRe pay progRamS wHen ThEy are SElecteD. If A seLected pRogram iS A paY pROGRaM, the system asks the uSeR TO pUrchase tHe progRAm (If THe user haS nOt aLreaDY PurchAsed THe Program). IF the prOGrAm Is purchAsEd, the sYsTem DesCrambLEs anD recorDs the selEcted PRogram at the schEDuled broadcasT TiME Of THe prOgrAm.
The system Also HAndlEs coPY pRotECted pRograMs. wItH One arrangement, the syStEm deteRmineS whether a progRam selecteD FOR recordiNg is COpY Protected. If the ProgrAm is not copY ProtecteD, the sYstem recOrds the prOGRam at the SchEduLed BroADCaSt time of the prOGRam. IF tHe progrAm iS copy prOteCteD, thE syStEm displayS a messagE iNfOrMiNg tHe useR That the sElEctEd ProGram mAY not be RecorDed.
WItH aNOthEr arranGEmENT, the SyStEm alLowS tHe useR to sELecT a pay prOgram for rEcoRDing Or FoR viewinG. If the program Is Selected foR rEcoRding, tHE System ofFers the program at a price sUItable fOr a ProgrAm wiThout copy ProTectioN. At THe scheDuled bRoadcAsT tiME Of the PROgRam, ThE system proVIDes The prOgRam tO the vidEocassette recorder WIthOut copy protecTioN and DIReCts THe VIdeOcASseTTE recorder to recoRd the selecTeD PrOgram. If the PRogRaM is seleCted for ViewiNG, the sysTem offers The prograM aT a prICE suItable for a Program wIth copy prOTectiON. AT the sCheDuled bRoAdcAst tiMe the sYSteM provIdes thE pRogram For viEwIng with cOpy protection.
Further feaTures oF the iNveNtion, its nAtuRE anD various aDvanTages will bE moRe aPpareNt fROm the AccoMPaNyiNG drawIngs ANd the follOWiNg dETAiLed descriptION Of tHe preFerREd emboDimeNts. Titanium dioxidE (tiO2) is perhaps onE of tHE MosT wiDEly uSeD transition metAl oXiDES in diverSe ApplicationS due to itS vARiety Of uniqUe and aPplicatION-wORthy prOperTieS. With the gRowInG EmphasiS oF tHE curreNt scIeNce and TechnoLOgy oN NAnomaterials due tO theiR UNique ANd nOvel pRoPerty doMAins, ConsiderabLe efforts haVe been ExpeNded oVer the pAsT decadE to SyNthesize vaRIous metal OxideS (includInG TiO2) In tHe form Of diFFErent PhasEs, ShaPes, and funCTIoNS uSiNG a vArieTy of sOfT cheMical and pHYsical syNthESis
 a program previously sele cted for r ecord ing  be co meslock ed. The messag e  pro vides the user with an  oppo rt u nity to  deci de whet h er t o c an ce l o rt oretai n t he reco rding sele cti on . If the rec o rd ing select ion  is retained , t he sys te m u n locks  th e sel ectedp rogram  and reco rd s  the s e lectedp r og ramat the scheduledb ro a dcast time for  the p ro g ra m . 
An oth er techniq ue  forh andling lo c k e d p r ograms involv es determin i ngwhethe ra p a rental  cont ro l  PI N has beencrea ted withthe sy s tem whe n ever aprogra m i s s elec t ed  f orre c ord i ng  fr o m t he progr am  g uide.  Ifa P I N ha s b eencreat ed, the PIN m ust  bee nte red b efore  the  p rogra m will  be r ec orded successfu lly. 
The syst emal low spay p r ograms  to  be  record ed by d e ter mi n i n gwhether programs s el e c te d for re cordin g  f ro m  the pro gr amguid e are p ay p r og rams whe n they ar eselecte d.  If ase lec ted  prog r am i s a pa y progra m, th e  system asks t h e user to pur c ha s e  t h e pr ogr am (if theuser hasnota lr ead y  purc hased  t h ep rogram). If the pro gr am ispurch ased, the sys tem descra m b l es and r ecor d st he selected pr ogram  at the sc h eduled b roadc ast time  of the p r o gram.
Th e s yst emals o ha ndles copy pr o t ecte dprogram s.With on e a rra nge men t,  the syst em deter mi ne swh eth er ap rogram s el ect ed  fo r rec o rdingis co py p ro te c ted . If th e  p r o gram  i snotcop yprote cted ,  th e syste m records  th e  pro gr am  at the  scheduled br oa dcast time  o f t he pro g r am. If t he program is copy prot e cted, t hesyste m di splays ames sage i nfo r ming t he use r tha tthe s elect e d  p rog ra m may notb e  re corde d. 
Wit h anoth er arrangement, th e  sy stem allows t heuser t osel e ct a p ay pro g r am for recordin g or for v ie w in g. If thep rog ra m is se lectedfor r e cording , the sys tem offer sthep r ogr am at a pr ice suit able fora  prog r am  with out  copypr ote ction . At t h e s chedu led br oa dcasttimeof  the pro gram, the system provid es the  prog ram  to the v ide o cas sette rec orde r withoutcop y p rotec tio n  anddire c ts  th e  vide ocas s ette reco r de r t o re cord the se l e c ted  prog ram .  If th e pr ogram is selected for viewing, t he s y s tem  of f ersth e program at a  pr ic e suitable  f or a progra m with c op y  prot ection . At t he sche d u le d  broad cast  ti me the sy ste mp rovides  t he progra m fo rviewin g with copy p rotection.
Furth er fe a t ureso f t he in ve ntion,i ts n ature andvarious adv antage s wi ll be  more a pp arentfro mthe accomp a nying dra wings  and th efoll owi ng det aile d descr ipti on  of  the pref e r re d  e mb o dim ents . Tit an iumdioxide ( T iO2) isper h aps one  o f t h e  mostw id e l y used tra nsi tionm e tal oxides in d i ve r se ap plicat ions d ue to i t s v ar iety of  un i q ue and ap plication - wor th y pr operties .With  t hegr owing emphasisof the c urrent s c i ence a ndt echn o logy o nnanomaterial s due  t o  theiru n iqu e and n o vel  pr ope rtydom ains ,  considerable efforts ha ve b een e x pen ded o ver t he  past de c adeto synth e size variousmetal oxides (i n clu d ingTiO 2 )in  the form  of diffe rent  ph ases , s hape s ,  and func t io ns u sing a  var ie ty  of softch emicala nd p h ysi calsynth es is 
 a_program previously_selected for recording becomes_locked. The_message_provides the_user_with an opportunity_to decide whether_to cancel or to_retain the recording_selection._If the recording selection is retained, the system unlocks the selected program and records_the_selected program_at_the_scheduled broadcast time for the_program.
Another technique for handling locked_programs involves_determining whether a parental control PIN has been_created_with the system_whenever a program is selected for recording from the_program guide. If a PIN has_been created, the_PIN_must_be entered before the_program will be recorded successfully.
The system_allows pay programs to be recorded_by determining whether programs selected for recording_from the program guide are pay_programs when they are selected._If a_selected program is a pay_program, the system_asks the_user to purchase_the program (if the user has_not already purchased_the program). If the program is_purchased,_the system descrambles_and_records_the selected_program at the_scheduled_broadcast time_of_the program.
The system also handles copy_protected_programs. With one arrangement, the system determines_whether a program selected_for_recording is copy protected._If the program is not_copy protected, the system records the_program at_the scheduled_broadcast time of the program. If the program is copy protected,_the system displays a message informing_the user that the_selected program_may_not be recorded.
With_another_arrangement, the_system allows the user to select a_pay program_for recording or for viewing. If_the program is selected_for_recording, the system offers the program_at a price suitable for a_program without copy protection. At_the_scheduled_broadcast time of the program,_the system provides the program to_the videocassette recorder_without copy protection and directs the videocassette_recorder_to record the selected program. If_the_program is selected for viewing, the_system_offers_the program at a price_suitable for a program with copy_protection. At the scheduled broadcast time the system provides_the program for_viewing with copy protection.
Further features_of_the_invention, its nature and various advantages will be more apparent_from the_accompanying drawings and_the following detailed description of the preferred embodiments. Titanium dioxide_(TiO2) is perhaps one of the most_widely used transition metal oxides in diverse applications due to its_variety of unique and application-worthy properties. With the_growing emphasis of the current science and_technology on nanomaterials due_to_their unique and novel property domains, considerable_efforts_have_been_expended over the_past decade to_synthesize various metal_oxides (including_TiO2) in the_form of_different phases, shapes,_and_functions using a variety of soft chemical and physical synthesis